Elastic silicone cotton structure and preparation method thereof

Abstract

Disclosed are an elastic silicone cotton structure and its preparation method. The elastic silicone cotton structure includes a cotton body, a silicone nest body and at least one glue layer. The silicone nest body is embedded into the cotton body and extended to a surface of the cotton body; the silicone layer is bonded to an upper surface and/or a lower surface of the cotton body. The novel elastic silicone cotton structure and the silicone nest body embedded into the cotton body improve the softness, resilience, pressure resistance, supportability, toughness, and anti-deformation performance of the cotton body. The portion of the structure protruding from the surface of the cotton body can be bonded with the glue layer stably to further improve the interlayer stability of the elastic silicone cotton structure and the bonding stability with other materials and prevent interlayer separation, so that the structure has a high practical value.

Claims

1. An elastic silicone cotton structure, comprising: a cotton body, a silicone nest body, and at least one glue layer, and the silicone nest body being embedded into the cotton body and protruded from a surface of the cotton body, and the glue layer being bonded with an upper surface and/or a lower surface of the cotton body; wherein the silicone nest body is formed after being cured by a liquid silicone rubber, and the liquid silicone rubber comprises the following raw materials in parts by weight: 45-50 parts of cage-like octahydro silsesquioxane; 35-40 parts of methyl vinyl silicone rubber; 5-8 parts of hydrogen-containing silicone oil; 3-8 parts of cyclohexane; 1-3 parts of white carbon black; 5-8 parts of a modified filler; 2-6 parts of a coupling agent; and 2-5 parts of a toughener.

2. The elastic silicone cotton structure as claimed in claim 1, wherein each glue layer has a weight of 15-35 g/m.sup.2; the cotton body is one selected from the group consisting of a fiber cotton body, a foam body, a latex cotton body, and a sandwich cotton body; and the glue layer is one selected from the group consisting of a urea-formaldehyde resin layer, a polyvinyl acetate adhesive layer, a polyurethane adhesive layer, an epoxy adhesive layer, a polyacrylic adhesive layer, a polyester adhesive layer, a PUR hot-melt adhesive layer, a PA hot-melt adhesive layer, a TPE hot-melt adhesive layer, and a PES hot-melt adhesive layer.

3. The elastic silicone cotton structure as claimed in claim 1, wherein each part of the modified filler is prepared by the steps of: S1: dispersing the filler into a mixed solvent A, heating the mixed solution up to 68-70° C. after an ultrasonic dispersion, slowing dropping an aqueous acrylic acid solution into the mixed solution, while stirring the mixed solution, and dropping an ammonia solution to adjust the pH value to a range of 5.3-5.8, and continuing stirring the mixed solution at a rotating speed of 600-800 rpm for 2-3 h to produce a prepolymer; and S2: adding a methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide into the prepolymer obtained from the step S1, dropping the ammonia solution to adjust the pH value to a range of 5.3-5.8, and stirring the mixed solution at 85-88° C. for 3-4 h, and then suction filtering the mixed solution and washing the mixed solution by deionized water to produce a modified filler.

4. The elastic silicone cotton structure as claimed in claim 3, wherein the mixed solvent A used in the step S1 is a mixture composed of ethanol and isopropanol in a weight ratio of 2-3:2, and the aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 2-6:60; and the prepolymer, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide in the Step S2 have a mix proportion by weight equal to 12-18:3:1.

5. The elastic silicone cotton structure as claimed in claim 3, wherein the filler, the mixed solvent A and the aqueous acrylic acid solution in the Step S1 have a mixture proportion by weight of 2-4:55:1, and the ultrasonic dispersion has an ultrasonic frequency of 15000-22000 Hz and a dispersion time of 20-25 min; and the filler is at least one selected from the group consisting of silicon dioxide, calcium carbonate and glass microsphere.

6. The elastic silicone cotton structure as claimed in claim 1, wherein each part of the coupling agent in parts by weight comprises 2-3 parts of (3-aminopropyl)trimethoxysilane, 0.5-2 parts of (γ-mercaptopropyl)trimethoxysilane and 2-3 parts of isopropyl tri(dioctylpyrophosphate) titanate; and the toughener is at least one selected from the group consisting of styreneic block copolymer, acrylonitrile butadiene styrene, and glycidyl methacrylate grafted with ethylene-octene copolymer.

7. An application method of an elastic silicone cotton structure as claimed in claim 3, comprising the steps of: coating an adhesive on an upper surface and/or a lower surface of a cotton body to form an elastic silicone cotton structure, and then attaching a material onto a surface of the adhesive surface to produce an elastic silicone cotton fabric; wherein the material is one selected from the group consisting of fabric, foam, fiber cotton, latex cotton, and sandwich cotton.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a partial cross-sectional view of the present invention; and

(2) FIG. 2 is a blowup view of the interior of a cotton body (which is enlarged by a microscope) showing a liquid silicone rubber flowing along the surface of a fiber filament or a foam pore of the cotton body and a silicone nest body formed in the cotton body in accordance with the present invention.

(3) Brief Description of Numerals Used in the Drawings: 1:

(4) 1: Cotton body; 2: Silicone nest body; 3: Glue layer.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) The technical characteristics of the present invention will become apparent with the detailed description of preferred embodiments accompanied with the illustration of related drawings (FIGS. 1 and 2) as follows.

Embodiment 1

(6) In FIGS. 1-2, an elastic silicone cotton structure comprises a cotton body 1, a silicone nest body 2 and at least one glue layer 3, and the silicone nest body 2 is embedded into the cotton body 1 and protruded to a surface of the cotton body 1, and the silicone layer is bonded with an upper surface and a lower surface of the cotton body 1.

(7) Each glue layer 3 has a weight of 15 g/m.sup.2; the cotton body 1 is an upright cotton body; the glue layer 3 is a urea-formaldehyde resin adhesive layer selectively made of a urea-formaldehyde resin adhesive.

(8) The silicone nest body 2 is formed after being cured by a liquid silicone rubber and the liquid silicone rubber comprises the following raw materials in parts by weight:

(9) TABLE-US-00002 Cage-like octahydro silsesquioxane (45 parts); Methyl vinyl silicone rubber (35 parts); Hydrogen-containing silicone oil (5 parts); Cyclohexane (3 parts); White carbon black (1 part); Modified filler (5 parts); Coupling agent (2 parts); and Toughener (2 parts).

(10) Each part of the modified filler is prepared by the steps of:

(11) S1: dispersing a filler into a mixed solvent A, heating the mixed solution to 68° C. after an ultrasonic dispersion, slowly dropping an aqueous acrylic acid solution into the mixed solution while stirring the mixed solution, adding an ammonia solution to adjust the pH value of the mixed solution to 5.83, and continuing stirring the mixed solution at a rotating speed of 600 rpm for 32 h to produce a prepolymer;

(12) S2: adding methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide into the prepolymer obtained from Step S1, adding the ammonia solution to the pH value to 5.3, stirring the mixed solution at 88° C. for 3-4 h, washing the mixed solution by a filtered deionized water, and baking and drying the mixed solution to produce a modified filler.

(13) In the step S1, the mixed solvent A is preferably a mixture composed of ethanol and isopropanol in a weight ratio of 1.1, and the aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 2:60. In the step S2, the prepolymer, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide have a mixture proportion by weight of 12:3:1.

(14) In the step S1, the filler, the mixed solvent A and the aqueous acrylic acid solution preferably have a mixture proportion by weight of 2:55:1; the ultrasonic dispersion has an ultrasonic frequency of 22000 Hz and a dispersion time of 20 min; and the filler is silicon dioxide.

(15) Each part of the coupling agent in parts by weight comprises 2 parts of (3-aminopropyl)trimethoxysilane, 0.5 part of (γ-mercaptopropyl)trimethoxysilane and 2 parts of isopropyl tri(dioctylpyrophosphate) titanate; and the toughener is a styreneic block copolymer selected from Baling Petrochemical Brach's YH-501 ethylene-butadiene-styrene block copolymer.

(16) The liquid silicone rubber is prepared by the steps of:

(17) Step {circle around (1)} mixing the cage-like octahydro silsesquioxane, hydrogen-containing silicone oil and two-thirds of the amount of cyclohexane according to the specified parts by weight, stirring the mixture uniformly, adding a toughener while stirring, and heating the mixture to 95° C., stirring the mixture for 2 h, heating the mixture again to 158° C., stirring the mixture 50 min, heating the mixture to 170° C., keeping the mixture at this temperature for 30 min, and finally cooling the mixture to room temperature to produce a mixture I;

(18) Step {circle around (2)}: mixing the white carbon black, modified filler, the remaining cyclohexane and two-thirds of the amount of coupling agent according to the specified parts by weight, and stirring the mixture uniformly to produce a mixture II; and

(19) Step {circle around (3)}: adding the mixture I obtained from the Step {circle around (1)} and the mixture II obtained from the Step {circle around (2)} while stirring, and then adding the remaining coupling agent, heating the mixture to 105° C., stirring the mixture for 3 h, and then cooling the mixture to room temperature to produce a liquid silicone rubber.

(20) A preparation method of the elastic silicone cotton structure comprises the steps of:

(21) Step A: preparing a cotton body 1, coating a liquid silicone rubber onto an upper surface and a lower surface of the cotton body 1, and then performing a baking and curing process to form a silicone nest body 2, and embedding the silicone nest body 2 into the cotton body 1 and protruding the silicone nest body 2 to a surface of the cotton body 1 to produce a composite layer; and

(22) Step B: coating an adhesive onto the composite layer surface obtained from the Step A to form a glue layer 3, so as to produce an elastic silicone cotton structure.

(23) In the step A, the coating method of the liquid silicone rubber is spray coating; the baking and curing process is carried out at the temperature of 80° C. for 180 s. In the Step B, the coating method of the adhesive is also spray coating.

(24) An application method of the elastic silicone cotton structure comprises the steps of: forming an elastic silicone cotton structure after an adhesive is coated onto an upper surface and/or a lower surface of a cotton body 1, and then attaching a material onto a surface of the adhesive to produce an elastic silicone cotton fabric, wherein the material is fabric.

Embodiment 2

(25) In FIG. 1, an elastic silicone cotton structure comprises a cotton body 1, a silicone nest body 2 and at least one glue layer 3, and the silicone nest body 2 is embedded into the cotton body 1 and protruded to a surface of the cotton body 1, and the silicone layer is bonded with an upper surface of the cotton body 1.

(26) Each glue layer 3 has a weight of 20 g/m.sup.2; the cotton body 1 is a foam body; the glue layer 3 is a polyacrylic adhesive layer selectively made of a polyacrylic resin adhesive.

(27) The silicone nest body 2 is formed after being cured by a liquid silicone rubber and the liquid silicone rubber comprises the following raw materials in parts by weight:

(28) TABLE-US-00003 Cage-like octahydro silsesquioxane (46 parts); Methyl vinyl silicone rubber (36 parts); Hydrogen-containing silicone oil (6 parts); Cyclohexane (5 parts); White carbon black (1.5 part); Modified filler (6 parts); Coupling agent (3 parts); and Toughener (3 parts).

(29) Each part of the modified filler is prepared by the steps of:

(30) S1: dispersing a filler into a mixed solvent A, heating the mixed solution to 68.5° C. after an ultrasonic dispersion, slowing dropping an aqueous acrylic acid solution into the mixed solution while stirring the mixed solution, adding an ammonia solution to adjust the pH value of the mixed solution to 5.5, and continuing stirring the mixed solution at a rotating speed of 650 rpm for 2.3 h to produce a prepolymer; and

(31) S2: adding methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide into the prepolymer obtained from Step S1, adding the ammonia solution to the pH value to 5.5, stirring the mixed solution at 87° C. for 3.2 h, washing the mixed solution by a filtered deionized water, and baking and drying the mixed solution to produce a modified filler.

(32) In the step S1, the mixed solvent A is preferably a mixture composed of ethanol and isopropanol in a weight ratio of 2.2:2, and the aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 3:60. In the step S2, the prepolymer, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide have a mixture proportion by weight of 13:3:1.

(33) In the step S1, the filler, the mixed solvent A and the aqueous acrylic acid solution preferably have a mixture proportion by weight of 2.5:55:1; the ultrasonic dispersion has an ultrasonic frequency of 21000 Hz and a dispersion time of 21 min; and the filler is calcium carbonate.

(34) Each part of the coupling agent in parts by weight comprises 2.2 parts of (3-aminopropyl)trimethoxysilane, 1.0 part of (γ-mercaptopropyl)trimethoxysilane and 2.2 parts of isopropyl tri(dioctylpyrophosphate) titanate; and the toughener is a styreneic block copolymer selected from Baling Petrochemical Brach's YH-502 ethylene-butadiene-styrene block copolymer.

(35) The liquid silicone rubber is prepared by the steps of:

(36) Step {circle around (1)} mixing the cage-like octahydro silsesquioxane, hydrogen-containing silicone oil and two-thirds of the amount of cyclohexane according to the specified parts by weight, stirring the mixture uniformly, adding a toughener while stirring, and heating the mixture to 96° C., stirring the mixture for 1.8 h, heating the mixture again to 160° C., stirring the mixture 48 min, heating the mixture to 170° C., keeping the mixture at this temperature for 31 min, and finally cooling the mixture to room temperature to produce a mixture I;

(37) Step {circle around (2)}: mixing the white carbon black, modified filler, the remaining cyclohexane and two-thirds of the amount of coupling agent according to the specified parts by weight, and stirring the mixture uniformly to produce a mixture II; and

(38) Step {circle around (3)}: adding the mixture I obtained from the Step {circle around (1)} and the mixture II obtained from the Step {circle around (2)} while stirring, and then adding the remaining coupling agent, heating the mixture to 106° C., stirring the mixture for 2.8 h, and then cooling the mixture to room temperature to produce a liquid silicone rubber.

(39) A preparation method of the elastic silicone cotton structure comprises the steps of:

(40) Step A: preparing a cotton body 1, coating a liquid silicone rubber onto an upper surface and a lower surface of the cotton body 1, and then performing a baking and curing process to form a silicone nest body 2, and embedding the silicone nest body 2 into the cotton body 1 and protruding the silicone nest body 2 to a surface of the cotton body 1 to produce a composite layer; and

(41) Step B: coating an adhesive onto the composite layer surface obtained from the Step A to form a glue layer 3, so as to produce an elastic silicone cotton structure.

(42) In the step A, the coating method of the liquid silicone rubber is scrap coating, and the baking and curing process is carried out at the temperature of 85° C. for 150 s. In the Step B, the coating method of the adhesive is also scrap coating.

(43) An application method of the elastic silicone cotton structure comprises the steps of: forming an elastic silicone cotton structure after an adhesive is coated onto an upper surface and/or a lower surface of a cotton body 1, and then attaching a material onto a surface of the adhesive to produce an elastic silicone cotton fabric, wherein the material is latex cotton.

Embodiment 3

(44) In FIG. 1, an elastic silicone cotton structure comprises a cotton body 1, a silicone nest body 2 and at least one glue layer 3, and the silicone nest body 2 is embedded into the cotton body 1 and protruded to a surface of the cotton body 1, and the silicone layer is bonded with an upper surface and a lower surface of the cotton body 1.

(45) Each glue layer 3 has a weight of 25 g/m.sup.2; the cotton body 1 is a fiber cotton body; the glue layer 3 is a PUR hot-melt adhesive layer selectively made of a PUR hot-melt adhesive.

(46) The silicone nest body 2 is formed after being cured by a liquid silicone rubber and the liquid silicone rubber comprises the following raw materials in parts by weight:

(47) TABLE-US-00004 Cage-like octahydro silsesquioxane (47 parts); Methyl vinyl silicone rubber (38 parts); Hydrogen-containing silicone oil (6.5 parts); Cyclohexane (6 parts); White carbon black (2 parts); Modified filler (6.5 parts); Coupling agent (4 parts); and Toughener (3.5 parts).

(48) Each part of the modified filler is prepared by the steps of:

(49) S1: dispersing a filler into a mixed solvent A, heating the mixed solution to 69° C. after an ultrasonic dispersion, slowing dropping an aqueous acrylic acid solution into the mixed solution while stirring the mixed solution, adding an ammonia solution to adjust the pH value of the mixed solution to 5.6, and continuing stirring the mixed solution at a rotating speed of 700 rpm for 2.5 h to produce a prepolymer; and

(50) S2: adding methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide into the prepolymer obtained from Step S1, adding the ammonia solution to the pH value to 5.6, stirring the mixed solution at 86.5° C. for 3.5 h, washing the mixed solution by a filtered deionized water, and baking and drying the mixed solution to produce a modified filler.

(51) In the step S1, the mixed solvent A is preferably a mixture composed of ethanol and isopropanol in a weight ratio of 2.5:2, and the aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 4:60. In the step S2, the prepolymer, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide have a mixture proportion by weight of 15:3:1.

(52) In the step S1, the filler, the mixed solvent A and the aqueous acrylic acid solution preferably have a mixture proportion by weight of 3:55:1; the ultrasonic dispersion has an ultrasonic frequency of 20000 Hz and a dispersion time of 22 min; and the filler is glass microsphere.

(53) Each part of the coupling agent in parts by weight comprises 2.5 parts of (3-aminopropyl)trimethoxysilane, 1.3 parts of (γ-mercaptopropyl)trimethoxysilane and 2.5 parts of isopropyl tri(dioctylpyrophosphate) titanate; and the toughener is acrylonitrile butadiene styrene selected from Taiwan Chimei's PA-758 acrylonitrile butadiene styrene.

(54) The liquid silicone rubber is prepared by the steps of:

(55) Step {circle around (1)} mixing the cage-like octahydro silsesquioxane, hydrogen-containing silicone oil and two-thirds of the amount of cyclohexane according to the specified parts by weight, stirring the mixture uniformly, adding a toughener while stirring, and heating the mixture to 98° C., stirring the mixture for 1.5 h, heating the mixture again to 162° C., stirring the mixture 45 min, heating the mixture to 170° C., keeping the mixture at this temperature for 32 min, and finally cooling the mixture to room temperature to produce a mixture I;

(56) Step {circle around (2)}: mixing the white carbon black, modified filler, the remaining cyclohexane and two-thirds of the amount of coupling agent according to the specified parts by weight, and stirring the mixture uniformly to produce a mixture II;

(57) Step {circle around (3)}: adding the mixture I obtained from the Step {circle around (1)} and the mixture II obtained from the Step {circle around (2)} while stirring, and then adding the remaining coupling agent, heating the mixture to 107° C., stirring the mixture for 2.5 h, and then cooling the mixture to room temperature to produce a liquid silicone rubber.

(58) A preparation method of the elastic silicone cotton structure comprises the steps of:

(59) Step A: preparing a cotton body 1, coating a liquid silicone rubber onto an upper surface and a lower surface of the cotton body 1, and then performing a baking and curing process to form a silicone nest body 2, and embedding the silicone nest body 2 into the cotton body 1 and protruding the silicone nest body 2 to a surface of the cotton body 1 to produce a composite layer; and

(60) Step B: coating an adhesive onto the composite layer surface obtained from the Step A to form a glue layer 3, so as to produce an elastic silicone cotton structure.

(61) In the step A, the coating method of the liquid silicone rubber is dip coating, and the baking and curing process is carried out at the temperature of 90° C. for 100 s. In the Step B, the coating method of the adhesive is also dip coating.

(62) An application method of the elastic silicone cotton structure comprises the steps of: forming an elastic silicone cotton structure after an adhesive is coated onto an upper surface and/or a lower surface of a cotton body 1, and then attaching a material onto a surface of the adhesive to produce an elastic silicone cotton fabric, wherein the material is fiber cotton.

Embodiment 4

(63) In FIG. 1, an elastic silicone cotton structure comprises a cotton body 1, a silicone nest body 2 and at least one glue layer 3, and the silicone nest body 2 is embedded into the cotton body 1 and protruded to a surface of the cotton body 1, and the silicone layer is bonded with a lower surface of the cotton body 1.

(64) Each glue layer 3 has a weight of 30 g/m.sup.2; the cotton body 1 is a latex cotton body; the glue layer 3 is an epoxy adhesive layer selectively made of an epoxy adhesive.

(65) The silicone nest body 2 is formed after being cured by a liquid silicone rubber and the liquid silicone rubber comprises the following raw materials in parts by weight:

(66) TABLE-US-00005 Cage-like octahydro silsesquioxane (48 parts); Methyl vinyl silicone rubber (38 parts); Hydrogen-containing silicone oil (7 parts); Cyclohexane (7 parts); White carbon black (3 parts); Modified filler (8 parts); Coupling agent (6 parts); and Toughener (5 parts).

(67) Each part of the modified filler is prepared by the steps of:

(68) S1: dispersing a filler into a mixed solvent A, heating the mixed solution to 69.5° C. after an ultrasonic dispersion, slowing dropping an aqueous acrylic acid solution into the mixed solution while stirring the mixed solution, adding an ammonia solution to adjust the pH value of the mixed solution to 5.7, and continuing stirring the mixed solution at a rotating speed of 750 rpm for 2.8 h to produce a prepolymer; and

(69) S2: adding methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide into the prepolymer obtained from Step S1, adding the ammonia solution to the pH value to 5.7, stirring the mixed solution at 86° C. for 3.8 h, washing the mixed solution by a filtered deionized water, and baking and drying the mixed solution to produce a modified filler.

(70) In the step S1, the mixed solvent A is preferably a mixture composed of ethanol and isopropanol in a weight ratio of 2.8:2, and the aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 5:60. In the step S2, the prepolymer, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide have a mixture proportion by weight of 16:3:1.

(71) In the step S1, the filler, the mixed solvent A and the aqueous acrylic acid solution preferably have a mixture proportion by weight of 3.5:55:1; the ultrasonic dispersion has an ultrasonic frequency of 18000 Hz and a dispersion time of 23 min; and the filler is silicon dioxide.

(72) Each part of the coupling agent in parts by weight comprises 2.8 parts of (3-aminopropyl)trimethoxysilane, 1.5 parts of (γ-mercaptopropyl)trimethoxysilane and 2.8 parts of isopropyl tri(dioctylpyrophosphate) titanate; and the toughener is acrylonitrile butadiene styrene selected from Formosa Chemicals & Fibre Corporation's AT5500 acrylonitrile butadiene styrene.

(73) The liquid silicone rubber is prepared by the steps of:

(74) Step {circle around (1)} mixing the cage-like octahydro silsesquioxane, hydrogen-containing silicone oil and two-thirds of the amount of cyclohexane according to the specified parts by weight, stirring the mixture uniformly, adding a toughener while stirring, and heating the mixture to 99° C., stirring the mixture for 1.2 h, heating the mixture again to 163° C., stirring the mixture 42 min, heating the mixture to 170° C., keeping the mixture at this temperature for 33 min, and finally cooling the mixture to room temperature to produce a mixture I;

(75) Step {circle around (2)}: mixing the white carbon black, modified filler, the remaining cyclohexane and two-thirds of the amount of coupling agent according to the specified parts by weight, and stirring the mixture uniformly to produce a mixture II; and

(76) Step {circle around (3)}: adding the mixture I obtained from the Step {circle around (1)} and the mixture II obtained from the Step {circle around (2)} while stirring, and then adding the remaining coupling agent, heating the mixture to 108° C., stirring the mixture for 2.2 h, and then cooling the mixture to room temperature to produce a liquid silicone rubber.

(77) A preparation method of the elastic silicone cotton structure comprises the steps of:

(78) Step A: preparing a cotton body 1, coating a liquid silicone rubber onto a lower surface of the cotton body 1, and then performing a baking and curing process to form a silicone nest body 2, and embedding the silicone nest body 2 into the cotton body 1 and protruding the silicone nest body 2 to a surface of the cotton body 1 to produce a composite layer; and

(79) Step B: coating an adhesive onto the composite layer surface obtained from the Step A to form a glue layer 3, so as to produce an elastic silicone cotton structure.

(80) In the Step A, the coating method of the liquid silicone rubber is spin coating; and the baking and curing process is carried out at the temperature of 95° C. for 50 s. In the Step B, the coating method of the adhesive is also spin coating.

(81) An application method of the elastic silicone cotton structure comprises the steps of: forming an elastic silicone cotton structure after an adhesive is coated onto an upper surface and/or a lower surface of a cotton body 1, and then attaching a material onto a surface of the adhesive to produce an elastic silicone cotton fabric, wherein the material is upright cotton.

Embodiment 5

(82) In FIG. 1, an elastic silicone cotton structure comprises a cotton body 1, a silicone nest body 2 and at least one glue layer 3, wherein the silicone nest body 2 is embedded into the cotton body 1 and protruded to a surface of the cotton body 1, and the silicone layer is bonded with an upper surface and a lower surface of the cotton body 1.

(83) Each glue layer 3 has a weight of 35 g/m.sup.2; the cotton body 1 is a sandwich cotton body; the glue layer 3 is a polyvinyl acetate adhesive layer made of a polyvinyl acetate adhesive.

(84) The silicone nest body 2 is formed after being cured by a liquid silicone rubber and the liquid silicone rubber comprises the following raw materials in parts by weight:

(85) TABLE-US-00006 Cage-like octahydro silsesquioxane (50 parts); Methyl vinyl silicone rubber (40 parts); Hydrogen-containing silicone oil (5 parts); Cyclohexane (8 parts); White carbon black (3 parts); Modified filler (8 parts); Coupling agent (6 parts); and Toughener (5 parts).

(86) Each part of the modified filler is prepared by the steps of:

(87) S1: dispersing a filler into a mixed solvent A, heating the mixed solution to 70° C. after an ultrasonic dispersion, slowing dropping an aqueous acrylic acid solution into the mixed solution while stirring the mixed solution, adding an ammonia solution to adjust the pH value of the mixed solution to 5.8, and continuing stirring the mixed solution at a rotating speed of 800 rpm for 3 h to produce a prepolymer; and

(88) S2: adding methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide into the prepolymer obtained from Step S1, adding the ammonia solution to the pH value to 5.8, stirring the mixed solution at 85° C. for 4 h, washing the mixed solution by a filtered deionized water, and baking and drying the mixed solution to produce a modified filler.

(89) In the step S1, the mixed solvent A is a mixture composed of ethanol and isopropanol in a weight ratio of 3:2, and aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 6:60. In the step S2, the prepolymer, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide have a mixture ratio by weight of 18:3:1.

(90) In the step S1, the filler, the mixed solvent A and the aqueous acrylic acid solution have a mixture proportion by weight of 4:55:1; the ultrasonic dispersion has an ultrasonic frequency of 15000 Hz and a dispersion time of 25 min; and the filler is calcium carbonate.

(91) Each part of the coupling agent in parts by weight comprises 3 parts of (3-aminopropyl)trimethoxysilane, 2 parts of (γ-mercaptopropyl)trimethoxysilane and 3 parts of isopropyl tri(dioctylpyrophosphate) titanate; the toughener is a glycidyl methacrylate grafted with ethylene-octene copolymer which is selected from Guangzhou Dongem Plastic Technology Company's DI-2901G glycidyl methacrylate grafted with ethylene-octene copolymer.

(92) The liquid silicone rubber is prepared by the steps of:

(93) Step {circle around (1)} mixing the cage-like octahydro silsesquioxane, hydrogen-containing silicone oil and two-thirds of the amount of cyclohexane according to the specified parts by weight, stirring the mixture uniformly, adding a toughener while stirring, and heating the mixture to 100° C., stirring the mixture for 1 h, heating the mixture again to 165° C., stirring the mixture 40 min, heating the mixture to 170° C., keeping the mixture at this temperature for 35 min, and finally cooling the mixture to room temperature to produce a mixture I;

(94) Step {circle around (2)}: mixing the white carbon black, modified filler, the remaining cyclohexane and two-thirds of the amount of coupling agent according to the specified parts by weight, and stirring the mixture uniformly to produce a mixture II; and

(95) Step {circle around (3)}: adding the mixture I obtained from the Step {circle around (1)} and the mixture II obtained from the Step {circle around (2)} while stirring, and then adding the remaining coupling agent, heating the mixture to 110° C., stirring the mixture for 2, and then cooling the mixture to room temperature to produce a liquid silicone rubber.

(96) A preparation method of the elastic silicone cotton structure comprises the steps of:

(97) Step A: preparing a cotton body 1, coating a liquid silicone rubber onto an upper surface and a lower surface of the cotton body 1, and then performing a baking and curing process to form a silicone nest body 2, and embedding the silicone nest body 2 into the cotton body 1 and protruding the silicone nest body 2 to a surface of the cotton body 1 to produce a composite layer; and

(98) Step B: coating an adhesive onto the composite layer surface obtained from the Step A to form a glue layer 3, so as to produce an elastic silicone cotton structure.

(99) In In the Step A, the coating method of the liquid silicone rubber is brush coating; and the baking and curing process is carried out at the temperature of 100° C. for 8 s. In the Step B, the coating method of the adhesive is also brush coating.

(100) An application method of the elastic silicone cotton structure comprises the steps of: forming an elastic silicone cotton structure after an adhesive is coated onto an upper surface and/or a lower surface of a cotton body 1, and then attaching a material onto a surface of the adhesive to produce an elastic silicone cotton fabric, wherein the material is foam.

Comparative Example 1

(101) The differences between this Comparative Example and Embodiment 3 are described below:

(102) The liquid silicone rubber comprises the following raw materials in parts by weight:

(103) TABLE-US-00007 Cage-like octahydro silsesquioxane (47 parts); Methyl vinyl silicone rubber (38 parts); Hydroxyl silicone oil (6.5 parts); Cyclohexane (6 parts); White carbon black (2 parts); Modified filler (6.5 parts); Coupling agent (4 parts); and Toughener (3.5 parts).

Comparative Example 2

(104) The differences between this Comparative Example and Embodiment 3 are described below:

(105) The liquid silicone rubber comprises the following raw materials in parts by weight:

(106) TABLE-US-00008 Cage-like octahydro silsesquioxane (47 parts); Methyl vinyl silicone rubber (38 parts); Hydrogen-containing silicone oil (6.5 parts); Cyclohexane (6 parts); White carbon black (2 parts); Filler (6.5 parts); Coupling agent (4 parts); and Toughener (3.5 parts).

(107) The filler is a non-modified filler; and the filler is glass microsphere.

Comparative Example 3

(108) The differences between this Comparative Example and Embodiment 3 are described below:

(109) Each part of the modified filler is prepared by the steps of:

(110) S1: dispersing a filler into a mixed solvent A, and producing a filler dispersion liquid after an ultrasonic dispersion; and

(111) S2: adding the filler dispersion liquid obtained from the step S1 into methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide, adding ammonia solution to adjust the pH value to 5.6, stirring the mixed solution at 86.5° C. for 3.5 h, washing the mixed solution by a filtered deionized water, and baking and drying the mixed solution to produce a modified filler.

(112) In the step S1, the mixed solvent A is a mixture of ethanol and isopropanol in a weight ratio of 2.5:2, and the filler and the mixed solvent A preferably have a mixture ratio by weight of 3:55:1; the ultrasonic dispersion has an ultrasonic frequency of 20000 Hz and a dispersion time of 22 min; and the filler is glass microsphere.

(113) In the step S2, the filler dispersion liquid, methyl methacrylate monomer and 1-((cyano-1-methylethyl)azo)formamide have a mixture proportion by weight of 15:3:1.

Comparative Example 4

(114) The differences between this Comparative Example and Embodiment 3 are described below:

(115) Each part of the modified filler is prepared by the steps of:

(116) dispersing the filler into a mixed solvent A, heating the mixed solution up to 69° C. after an ultrasonic dispersion, slowly dropping an aqueous acrylic acid solution into the mixed solution, while stirring the mixed solution, and dropping an ammonia solution to adjust the pH value to a range of 5.6, continuing stirring the mixed solution at a rotating speed of 700 rpm for 2.5 h and washing the mixed solution by a filtered deionized water to produce a modified filler.

(117) The mixed solvent A is a mixture of ethanol and isopropanol in a weight ratio of 2.5:2, and the aqueous acrylic acid solution is composed of acrylic acid and water in a weight ratio of 4:60. In the step S1, the filler, the mixed solvent A and the aqueous acrylic acid solution have a mixture proportion by weight of 3:55:1, and the ultrasonic dispersion has an ultrasonic frequency of 20000 Hz and a dispersion time of 22 min; and the filler is glass microsphere.

(118) The test results of the performance on the resilience, bending strength impact strength, and surface self-adhesiveness of the cotton body 1 with the silicone nest body 2 in accordance with Embodiment 3 and Comparative Examples 1-4 are listed in the following table:

(119) TABLE-US-00009 Permeability (Steam temperature Resilience Bending Impact Surface self- at upper surface of the elastic percentage/ strength/ strength/ adhesiveness/ silicone cotton structure upper % MPa MPa MPa surface)/° C. Embodiment 96.8 115.6 6.6 1.3 113.2 3 Comparative 88.5 92.8 5.5 0.7 111.5 Example 1 Comparative 90.4 104.2 5.9 0.9 110.2 Example 2 Comparative 91.2 108.1 5.9 1.0 111.8 Example 3 Comparative 91.8 109.5 6.0 0.9 111.6 Example 4

(120) The resilience is tested based on the standard “FZ/T 70006-2004 Stretch and Recovery Testing Method for Knits; the surface self-adhesiveness is tested based on the standard “GB/T 10247-2008 Viscosity Measurement Method”; the bending strength is tested based on the standard “GB/T 9341-2000 Plastics-Determination of Flexural Properties”; and the impact strength is tested based on the standard “GB/T 1843-2008 Plastics-Determination of izod impact strength”.

(121) In the permeability testing method, the elastic silicone cotton structure is placed horizontally, and steam is sprayed continuously at the elastic silicone cotton structure from bottom to top (wherein the temperature of steam at the lower surface of the elastic silicone cotton structure is 115° C.), and the speed of the water vapor or water drop at the upper surface of the elastic silicone cotton structure is observed, and the steam temperature of the upper surface of the elastic silicone cotton structure is measured.

(122) From the data above and comparison, we learn that the Comparative Example 1 uses the same quantity of hydroxyl silicone oil to substitute the hydrogen-containing silicone oil, and the resilience, bending strength, impact strength and surface self-adhesiveness of the cotton body 1 embedded with the silicone nest body 2 are dropped significantly, and thus showing that specific ratio of the cage-like octahydro silsesquioxane to the hydrogen-containing silicone oil used in the present invention makes the liquid silicone rubber so produced to have a greater bonding strength and a better mobility and allows the liquid silicone rubber to permeate from the surface of the cotton body 1 into the cotton body 1, so that the silicone nest body 2 is formed in the cotton body 1 and on the coated surface of the cotton body to improve the elasticity, softness, resilience, pressure resistance, supportability, toughness, and surface adhesiveness of the cotton body 1, and the cotton body 1 can be adhered with various types of adhesives for attaching other materials.

(123) The filler of the Comparative Example 2 has not been processed with modification; the filter of the Comparative Example 3 directly grafts the methyl methacrylate monomer to the surface of the filler and does not use acrylic acid for the surface modification; the filter of the Comparative Example 4 just performs a surface modification by acrylic acid, so that the resilience, bending strength, impact strength and surface self-adhesiveness of the cotton body 1 embedded with the silicone nest body 2 are dropped significantly, and thus showing that the present invention uses acrylic acid for the surface modification of the filler to improve the dispersibility of the filler in the system, and then the methyl methacrylate monomer is grafted to a surface of the acrylic acid cladding layer under the initiation effect of the 1-((cyano-1-methylethyl)azo)formamide to improve the impact resistance of the filler and the softness and elasticity of the liquid silicone, and filler-acrylic acid-PMMA composite particles are formed to improve the softness/toughness, impact and pressure resistance, supportability and resilience of the liquid silicone rubber in the cotton body 1.

(124) While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention as set forth in the claims.