Modified thermoplastic polyurethane rolling film and preparation method

Abstract

This present invention discloses a modified thermoplastic polyurethane (TPU) rolling film and relates to a preparation method thereof. The modified thermoplastic polyurethane (TPU) rolling film comprises: 100 parts by weight of TPU resin, 3 to 8 parts by weight of Thermoplastic polyolefin (TPO) resin, 5 to 10 parts by weight of Thermo Plastic Silicone Vulcanizate (TPSiV) resin, 5 to 15 parts by weight of TPU color masterbatch, 0.5 to 1.5 parts by weight of antioxidant, 0.5 to 1.5 parts by weight of light stabilizer, 10 to 15 parts by weight of flame retardant, and 0.03 to 0.1 parts by weight of compound lubricant. This kind of rolling film has a uniform thickness and high surface gloss, and is yellowing resistant, abrasion resistant, flame retardant, and low-temperature resistant.

Claims

1. A modified thermoplastic polyurethane (TPU) rolling film comprising: 100 parts by weight of TPU resin, 3 to 8 parts by weight of Thermoplastic polyolefin (TPO) resin, 5 to 10 parts by weight of Thermo Plastic Silicone Vulcanizate (TPSiV) resin, 5 to 15 parts by weight of TPU color masterbatch, 0.5 to 1.5 parts by weight of antioxidant, 0.5 to 1.5 parts by weight of light stabilizer, 10 to 15 parts by weight of flame retardant, and 0.03 to 0.1 parts by weight of compound lubricant.

2. The composition as claimed in claim 1 wherein the TPU color masterbatch is prepared through an extruding and granulation process by mixing TPU resin with toner together.

3. The composition as claimed in claim 1 wherein the antioxidant is prepared by mixing -(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester with N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyphenyl propionamide) at a mass ratio of 1:1.5.

4. The composition as claimed in claim 1 wherein the light stabilizer is prepared by mixing 2-(2-hydroxy-3,5-cumylphenyl) benzotriazole with 2-(2-hydroxy-3,5-di-tert-amyl-phenyl) benzotriazole at a mass ratio of 1:2.

5. The composition as claimed in claim 1 wherein the flame retardant is prepared by mixing organophosphate flame retardant with talcum powder of 5000 mesh at a mass ratio of 3:1.

6. The composition as claimed in claim 1 wherein the compound lubricant is prepared by mixing Erucamide with Oleic acid amide and Stearic acid at a mass ratio of 1:1:1.

7. A process of preparing a modified TPU rolling film as claimed in claim 1 comprising the following steps: Step 1: add all ingredients according to the compositions specified in claims 1-6 to a stirring pot and stir the mixture evenly at a high speed under a temperature between 85 C. and 100 C.; Step 2: pour the mixture from Step 1 into an internal mixer wherein the mixture is mixed for 3 to 5 minutes; Step 3: the mixture from Step 2 is subsequently plasticated, extruded, and calendered using a rolling turbine, an extruder, and a calender, respectively.

8. The process according to claim 7 wherein the temperatures for plasticating, extruding, and calendaring as described in Step 3 are maintained at 130 C. to 150 C., 130 C. to 150 C., 140 C. to 160 C. respectively.

9. The process according to claim 7 wherein the TPU color masterbatch is prepared through an extruding and granulation process by mixing TPU resin with toner together.

10. The process according to claim 7 wherein the antioxidant is prepared by mixing -(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester with N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyphenyl propionamide) at a mass ratio of 1:1.5.

11. The process according to claim 7 wherein the light stabilizer is prepared by mixing 2-(2-hydroxy-3,5-cumylphenyl) benzotriazole with 2-(2-hydroxy-3,5-di-tert-amyl-phenyl) benzotriazole at a mass ratio of 1:2.

12. The process according to claim 7 wherein the flame retardant is prepared by mixing organophosphate flame retardant with talcum powder of 5000 mesh at a mass ratio of 3:1.

13. The process according to claim 7 wherein the compound lubricant is prepared by mixing Erucamide with Oleic acid amide and Stearic acid at a mass ratio of 1:1:1.

Description

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(1) The present invention is further described in the following three exemplified embodiments to illustrate the application of the principles of the invention. It is understood that the invention may be embodied otherwise without departing from such principles. The scope of the claims of the present invention expressly should not be limited to such exemplary or preferred embodiments.

Embodiment 1

(2) In this embodiment, the present application provides a modified TPU rolling film comprising:

(3) 100 parts by weight of TPU resin,

(4) 3 parts by weight of TPO resin,

(5) 10 parts by weight of TPSiV resin,

(6) 5 parts by weight of TPU color masterbatch,

(7) 0.5 parts by weight of antioxidant,

(8) 1.5 parts by weight of light stabilizer,

(9) 15 parts by weight of flame retardant,

(10) and 0.1 parts by weight of compound lubricant.

(11) The grade of said TPU resin is TPU DP6386A, which was purchased from Bayer Company.

(12) The grade of said TPO resin is CMW402, which was purchased from Exxon Mobil.

(13) The said TPSiV resin is 3011 series, which was purchased from Dow Corning.

(14) The said TPU color masterbatch is prepared through the extruding and granulating process with TPU resin (DP6386A) used as carrier and toner.

(15) The said antioxidant is prepared by mixing -(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester (antioxidant 1076) with N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyphenyl propionamide) (antioxidant 1098) at a mass ratio of 1:1.5.

(16) The said light stabilizer is prepared by mixing 2-(2-hydroxy-3,5-cumylphenyl) benzotriazole (UV234) with 2-(2-hydroxy-3,5-di-tert-amyl-phenyl) benzotriazole (UV328) at a mass ratio of 1:2.

(17) The flame retardant is prepared by mixing the organophosphate flame retardants (grade OP1320) with talcum powder of 5000 mesh at a mass ratio of 3:1.

(18) The compound lubricant is prepared by mixing erucamide with Oleic acid amide and Stearic acid, at a mass ratio of 1:1:1.

(19) The TPSiV resin, developed by the Dow Corning, is a kind of thermoplastic silicone elastomer that is composed of hermoplastic substrates and vulcanisation silicone rubber particles.

(20) The present application further provides a process for preparing the modified thermoplastic polyurethane (TPU) rolling film, comprising the following steps:

(21) Step (1): adding all ingredients according to the compositions into a stirring pot and stir the mixture evenly at a high speed under a temperature of 85 C.;

(22) Step (2): pouring the mixture from Step (1) into an internal batch mixer wherein the mixture is mixed for 5 minutes;

(23) Step (3): plasticating, then extruding, and finally calendering the mixture obtained from Step (2) using a rolling turbine, an extruder, and a calender, respectively. The temperatures of said plasticating, extruding, and calendaring are maintained at 130 C., 130 C., 150 C. respectively.

Embodiment 2

(24) In the second embodiment, the present application provides a modified TPU rolling film comprising:

(25) 100 parts by weight of TPU resin,

(26) 5 parts by weight of TPO resin,

(27) 8 parts by weight of TPSiV resin,

(28) 10 parts by weight of TPU color masterbatch,

(29) 0.7 parts by weight of antioxidant,

(30) 1.1 parts by weight of light stabilizer,

(31) 13 parts by weight of flame retardant,

(32) and 0.08 parts by weight of compound lubricant.

(33) The grade of said TPU resin is TPU DP6386A, which was purchased from Bayer Company.

(34) The grade of said TPO resin is CMW402, which was purchased from Exxon Mobil.

(35) The said TPSiV resin is 3011 series, which was purchased from Dow Corning.

(36) The said TPU color masterbatch is prepared through the extruding and granulating process with TPU resin (DP6386A) used as carrier and toner.

(37) The said antioxidant is prepared by mixing -(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester (antioxidant 1076) with N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyphenyl propionamide) (antioxidant 1098) at a mass ratio of 1:1.5, respectively.

(38) The said light stabilizer is prepared by mixing 2-(2-hydroxy-3,5-cumylphenyl) benzotriazole (UV234) with 2-(2-hydroxy-3,5-di-tert-amyl-phenyl) benzotriazole (UV328) at a mass ratio of 1:2.

(39) The flame retardant is prepared by mixing the organophosphate flame retardants (grade OP1320) with talcum powder of 5000 mesh at a mass ratio of 3:1.

(40) The compound lubricant is prepared by mixing erucamide with Oleic acid amide and Stearic acid, at a mass ratio of 1:1:1.

(41) The TPSiV resin, developed by the Dow Corning, is a kind of thermoplastic silicone elastomer that is composed of hermoplastic substrates and vulcanisation silicone rubber particles.

(42) The present application further provides a process for preparing the modified thermoplastic polyurethane (TPU) rolling film, comprising the following steps:

(43) Step (1): adding all ingredients according to the compositions into a stirring pot and stir the mixture evenly at a high speed under a temperature of 90 C.;

(44) Step (2): pouring the mixture from Step (1) into an internal batch mixer wherein the mixture is mixed for 4 minutes;

(45) Step (3): plasticating, then extruding, and finally calendering the mixture obtained from Step (2) using a rolling turbine, an extruder, and a calender, respectively. The temperatures of said plasticating, extruding, and calendaring are maintained at 140 C., 150 C., 140 C. respectively.

Embodiment 3

(46) In the third embodiment, the present application provides a modified TPU rolling film comprising:

(47) 100 parts by weight of TPU resin,

(48) 8 parts by weight of TPO resin,

(49) 5 parts by weight of TPSiV resin,

(50) 15 parts by weight of TPU color masterbatch,

(51) 1.5 parts by weight of antioxidant,

(52) 0.5 parts by weight of light stabilizer,

(53) 10 parts by weight of flame retardant,

(54) and 0.03 parts by weight of compound lubricant.

(55) The grade of said TPU resin is TPU DP6386A, which was purchased from Bayer Company.

(56) The grade of said TPO resin is CMW402, which was purchased from Exxon Mobil.

(57) The said TPSiV resin is 3011 series, which was purchased from Dow Corning.

(58) The said TPU color masterbatch is prepared through the extruding and granulating process with TPU resin (DP6386A) used as carrier and toner.

(59) The said antioxidant is prepared by mixing -(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester (antioxidant 1076) with N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyphenyl propionamide) (antioxidant 1098) at a mass ratio of 1:1.5, respectively.

(60) The said light stabilizer is prepared by mixing 2-(2-hydroxy-3,5-cumylphenyl) benzotriazole (UV234) with 2-(2-hydroxy-3,5-di-tert-amyl-phenyl) benzotriazole (UV328) at a mass ratio of 1:2.

(61) The flame retardant is prepared by mixing the organophosphate flame retardants (grade OP1320) with talcum powder of 5000 mesh at a mass ratio of 3:1.

(62) The compound lubricant is prepared by mixing Erucamide with Oleic acid amide and Stearic acid, at a mass ratio of 1:1:1.

(63) The TPSiV resin, developed by the Dow Corning, is a kind of thermoplastic silicone elastomer that is composed of hermoplastic substrates and vulcanisation silicone rubber particles.

(64) The present application further provides a process for preparing the modified thermoplastic polyurethane (TPU) rolling film, comprising the following steps:

(65) Step (1): adding all ingredients according to the compositions into a stirring pot and stir the mixture evenly at a high speed under a temperature of 100 C.;

(66) Step (2): pouring the mixture from Step (1) into an internal batch mixer wherein the mixture is mixed for 5 minutes;

(67) Step (3): plasticating, then extruding, and finally calendering the mixture obtained from Step (2) using a rolling turbine, an extruder, and a calender, respectively. The temperatures of said plasticating, extruding, and calendaring are maintained at 150 C., 140 C., 160 C., respectively.