Composite polyester material, composite polyester fiber, processes for preparing the same and uses thereof

Abstract

A polyester material including a composite having a carbon nanostructure, which comprises carbon element, from 0.5 to 4 wt % of a first non-carbon non-oxygen element substance, and from 0 to 4 wt %, of a second non-carbon non-oxygen element. The first non-carbon non-oxygen element is selected from the group consisting of P, Si, Ca, Al and Na; the second non-carbon non-oxygen element is any one selected from the group consisting of Fe, Ni, Mn, K, Mg, Cr, S or Co, or a combination of at least two selected therefrom. The G peak and D peak of the carbon element in the Raman spectrum has a peak height ratio of 1-20 in the composite having a carbon nanostructure.

Claims

1. A composite polyester material comprising: a composite having a carbon nanostructure comprising: carbon element; a first non-carbon non-oxygen element substance from 0.5 to 4 wt% of the composite having the carbon nanostructure, the first non-carbon non-oxygen element substance consisting essentially of P, Si, Ca, Al and Na; and a second non-carbon non-oxygen element from 0 to 4 wt% of the composite having the carbon nanostructure, the second non-carbon non-oxygen element is any one selected from the group consisting of Fe, Ni, Mn, K, Mg, Cr, S or Co, or a combination of at least two selected therefrom; wherein the G peak and D peak of the carbon element in the Raman spectrum has a D peak to G peak height ratio of 1-20 in the composite having the carbon nanostructure, and optionally, the composite having the carbon nanostructure further has a 2D peak in the Raman spectrum; wherein the composite having the carbon nanostructure is present in the composite polyester material in an amount of 0.1-10 wt%.

2. The composite polyester material of claim 1, wherein the composite having the carbon nanostructure has a far-infrared detection normal emissivity of greater than 0.85; and the composite having the carbon nanostructure comprises 80 wt% or more of the carbon element.

3. The composite polyester material of claim 1, wherein: the composite having the carbon nanostructure has a carbon six-membered ring honeycomb lamellar structure having a thickness of 100 nm or less, the carbon six-membered ring honeycomb lamellar structure microscopically showing any one conformation selected from the group consisting of warping, curling and folding, or a combination of at least two selected therefrom; the first non-carbon non-oxygen element in the composite having the carbon nanostructure is adsorbed on the surface of or inside the carbon nanostructure in any one form selected from the group consisting of simple substance, oxides and carbides, or a combination of at least two selected therefrom; and the first non-carbon non-oxygen element in the composite having the carbon nanostructure is introduced through biomass carbon sources.

4. A process for preparing the composite polyester material of claim 1, the process comprising any one of: i) melting a polyester material, then adding a composite having the carbon nanostructure, cooling to obtain the composite polyester material; ii) dissolving a polyester material in a solvent, then adding a composite having the carbon nanostructure, and removing the solvent to obtain the composite polyester material; or iii) during the polymerization of a polyester material, a composite having the carbon nanostructure is introduced for in-situ compounding, to obtain a melt after reaction, and the melt is discharged to obtain the composite polyester material; wherein the composite having the carbon nanostructure is added in an amount of from 0.1 to 10 wt% of the polyester material.

5. The process of claim 4, wherein the solvent in process ii) is any one selected from the group consisting of fluoroacetic acid, a mixed solution of phenol and tetrachloroethane, and tetrahydrofuran, or a combination of at least two selected therefrom.

6. The process of claim 4, wherein the composite having the carbon nanostructure in process iii) is added in a dry powder form of the composite having the carbon nanostructure, or a dispersion liquid form of the composite having the carbon nanostructure.

7. The process of claim 4, wherein the composite having the carbon nanostructure in process iii) is introduced at any one timing selected from the group consisting of a beating stage of raw materials, an esterification pre-polymerization stage, a pre-polycondensation stage, and a final polycondensation stage, or a combination of at least two selected therefrom; and the melt is discharged under the conditions of cooling water at 20-75 C. and a drawing speed of 0.01-1 m/s.

8. The process of claim 4, wherein the process iii) further comprises: (1) beating and homogeneously mixing a polyacid, a polyalcohol and the composite having the carbon nanostructure, feeding into a reaction kettle, and then passing through an esterification pre-polymerization stage, a pre-polycondensation stage, and a final polycondensation stage to complete polymerization, so as to obtain a melt; and (2) discharging the melt under the conditions of cooling water at 20-75 C. and a drawing speed of 0.01-1 m/s, and directly pelletizing to obtain the composite polyester material.

9. The process of claim 4, wherein the composite having the carbon nanostructure is obtained by: (i) mixing a biomass carbon source with a catalyst, stirring for catalytic treatment, and drying to obtain a precursor; (ii) maintaining the temperature of the precursor at 280-350 C. for 1.5-2.5h under protective atmosphere, then increasing by temperature programming to 950-1200 C. at a rate of 15-20 C/min, maintaining the temperature for 3-4h to obtain a crude product; and (iii) washing the crude product to obtain the composite having the carbon nanostructure.

10. The process of claim 9, wherein: the biomass carbon source and the catalyst have a mass ratio of 1:(0.1-10); and the catalyst is any one selected from the group consisting of manganese compounds, iron-containing compounds, cobalt-containing compounds and nickel-containing compounds, or a combination of at least two selected therefrom.

11. The process of claim 10, wherein the catalyst is any one selected from the group consisting of ferric chloride, ferrous chloride, ferric nitrate, ferrous nitrate, ferric sulfate, ferrous sulfate, potassium ferricyanide, potassium ferrocyanide, potassium trioxalatoferrate, cobalt chloride, cobalt nitrate, cobalt sulfate, cobalt acetate, nickel chloride, nickel nitrate, nickel sulfate and nickel acetate, or a combination of at least two selected therefrom.

12. The process of claim 9, wherein: the stirring for catalytic treatment in step (i) is carried out at a temperature of 150-200 C. for 4h or more; the water content in the precursor is 10 wt% or less; the temperature rising rate in step (ii) increasing the temperature of the precursor to 280-350 C. is 3-5 C/min; the protective atmosphere is any one selected from the group consisting of nitrogen, helium and argon, or a combination of at least two selected therefrom; the washing the crude product in step (iii) is carried out at a temperature of 55-65 C. and includes an acid washing and a water washing in sequence, wherein the acid washing is carried out by using hydrochloric acid having a concentration of 3-6 wt%, and the water washing is carried out by using deionized water and/or distilled water; and the biomass carbon source is cellulose and/or lignin.

13. A composite polyester fiber comprising: a composite having a carbon nanostructure, the composite having the carbon nanostructure comprising: carbon element; a first non-carbon non-oxygen element substance from 0.5 to 4 wt% of the composite having the carbon nanostructure; the first non-carbon non-oxygen element substance consisting essentially of P, Si, Ca, Al and Na; and a second non-carbon non-oxygen element from 0 to 4 wt% of the composite having the carbon nanostructure; the second non-carbon non-oxygen element is any one selected from the group consisting of Fe, Ni, Mn, K, Mg, Cr, S or Co, or a combination of at least two selected therefrom; wherein the G peak and D peak of the carbon element in the Raman spectrum has a D peak to G peak height ratio of 1-20 in the composite having the carbon nanostructure, and optionally, the composite having the carbon nanostructure further has a 2D peak in the Raman spectrum; wherein the composite having the carbon nanostructure is present in the composite polyester fiber in an amount of 0.1-10 wt%.

14. The composite polyester fiber of claim 13, wherein the composite having the carbon nanostructure has a far-infrared detection normal emissivity of greater than 0.85; and the composite having the carbon nanostructure comprises 80 wt% or more of the carbon element.

15. The composite polyester fiber of claim 13, wherein: the composite having the carbon nanostructure has a carbon six-membered ring honeycomb lamellar structure having a thickness of 100 nm or less; the carbon six-membered ring honeycomb lamellar structure microscopically showing any one conformation selected from the group consisting of warping, curling and folding, or a combination of at least two selected therefrom; the first non-carbon non-oxygen element in the composite having the carbon nanostructure is adsorbed on the surface of or inside the carbon nanostructure in any one form selected from the group consisting of simple substance, oxides and carbides, or a combination of at least two selected therefrom; and the first non-carbon non-oxygen element in the composite having the carbon nanostructure is introduced through biomass carbon sources.

16. A process for preparing the composite polyester fiber of claim 13, the process comprising: dicing the composite polyester material obtained in claim 13 to obtain a composite polyester masterbatch; and melt-spinning the composite polyester masterbatch to obtain the polyester fiber compounded from the composite having the carbon nanostructure.

17. The process of claim 16, wherein the melt-spinning process is a pre-oriented yarn process having a yarn extruding temperature of 30-70 C. and a yarn extruding humidity of 10-90%; the yarn extruding is carried out by air cooling or water cooling; the melt is discharged under the conditions of cooling water at a temperature of 20-75 C.; and the melt is discharged at a drawing speed of 0.01-1 m/s.

18. A process for preparing the composite polyester fiber of claim 13, the process comprising: beating and homogeneously mixing a polyacid, a polyalcohol and the composite having the carbon nanostructure, feeding into a reaction kettle, and then passing through an esterification pre-polymerization stage, a pre-polycondensation stage, and a final polycondensation stage to complete polymerization, so as to obtain a melt; discharging the melt under the conditions of cooling water at 20-75 C. and a drawing speed of 0.01-1 m/s, directly pelletizing to obtain a masterbatch; and melt-spinning the masterbatch at a yarn extruding temperature of 30-70 C. and a yarn extruding humidity of 10-90% by air cooling or water cooling, to obtain the composite polyester fiber compounded from the composite having the carbon nanostructure.

Description

DESCRIPTION

(1) The technical solution of the present invention is further stated by the following embodiments.

(2) Those skilled in the art shall know that the examples are only used to understand the present invention, and shall not be regarded any specific limits to the present invention.

(3) Preparation of a composite having a carbon nanostructure: (1) Preparing porous cellulose by reference to the indexes in CN104016341A, specifically: Adjusting with sulfuric acid at 90 C. an aqueous solution of corn cob to pH=3, soaking for 10 min for hydrolysis to obtain lignocellulose, wherein the sulfuric acid has a mass of 3% of the corn cob mass; and then soaking at 70 C. the resultant lignocellulose in acid sulphite for 1 h to obtain porous cellulose for backup, wherein the acid is sulfuric acid; the sulphite is magnesium sulfite; the sulfuric acid has a mass of 4% of the lignocellulose mass; the liquid-solid ratio is 2:1; (2) Preparing a composite having a carbon nanostructure, specifically:

(4) Mixing the porous cellulose with a catalyst in a mass ratio of 1:(0.1-10), stirring at 150-200 C. for catalytic treatment for more than 4 h, drying to obtain a precursor with a water content of 10 wt % or less; then heating the precursor under protective atmosphere to 280-350 C. at a rate of 3-5 C./min, maintaining the temperature for 1.5-2.5 h, then heating by temperature programming to 950-1200 C. at a rate of 15-20 C./min, maintaining the temperature for 3-4 h to obtain a crude product; acid-washing the crude product at 55-65 C. with hydrochloric acid having a concentration of 3-6wt % to obtain a composite having a carbon nanostructure.

(5) The composite having a carbon nanostructure 1# was prepared under the following conditions: in step (2), the catalyst was ferrous chloride; the porous cellulose and the catalyst were mixed in a mass ratio of 1:0.1; the catalytic treatment was carried out at 150 C. for 4 h; the precursor had a water content of 10 wt %; the crude product was obtained by the following procedures of increasing the temperature at a rate of 3 C./min to 280 C., maintaining for 2 h, then heating at a rate of 15 C./min to 950 C., and maintaining for 3 h; the acid-washing was carried out at 55 C.; hydrochloric acid used for the acid-washing had a concentration of 4 wt %.

(6) The composite having a carbon nanostructure 1# primarily contains elements of P, Si, Ca, Al, Na, Fe, Mg; Raman spectrum shows that the peak height ratio of G peak and D peak is 7, and there is a 2D peak.

(7) The preparation process of the composite having a carbon nanostructure 2# is different from that of the composite having a carbon nanostructure 1# in that the ratio of the porous cellulose to ferrous chloride in step (2) was changed to 1:10; the resultant composite having a carbon nanostructure 2# primarily contains elements of P, Si, Ca, Al, Na, Fe, Mg; and Raman spectrum shows that the peak height ratio of G peak and D peak is 20.

(8) The preparation process of the composite having a carbon nanostructure 3# is different from that of the composite having a carbon nanostructure 1# in that the ratio of the porous cellulose to ferrous chloride in step (2) was changed to 1:0.5; the resultant composite having a carbon nanostructure 3# primarily contains elements of P, Si, Ca, Al, Na, Fe, Mg; and Raman spectrum shows that the peak height ratio of G peak and D peak is 1.5.

EXAMPLE 1

(9) A composite polyester material was obtained by the following process: (1) 100 g of a composite having a carbon nanostructure was homogeneously mixed with 8.52 kg of PTA and 3.5L of ethylene glycol, treated by ball milling for 20 min, directly introduced to a beating kettle and beaten for 30 min, reacted according to the three-kettle PET polymerization process and polymerized to obtain a melt; (2) discharging the melt under the conditions of cooling water at 40 C. and a drawing speed of 0.5 m/s, directly pelletizing to obtain a PET material (PET masterbatch) compounded from the composite having a carbon nanostructure;

(10) After step (2), the PET masterbatch compounded from the composite having a carbon nanostructure was drum-dried at 110 C. for 24 h, and directly used for melt-spinning in step (3). The yarn was cooled with water mist at 40 C., dried at 35 C., melt-spun to obtain a composite polyester fiber.

(11) The composites having a carbon nanostructure 1#, 2# and 3# were respectively used for preparing polyester materials and polyester fibers. The polyester materials were respectively labelled as product 1a (the PET material compounded from 1#), product 1b (the PET material compounded from 2#), product 1c (the PET material compounded from 3#); polyester fibers were respectively labelled as product 1a (the polyester fiber compounded from 1#), product 1b (the polyester fiber compounded from 2#) and product 1c (the polyester fiber compounded from 3#).

(12) The products 1a and 1a had a far-infrared detection normal emissivity of as high as 0.87, and an antibacterial rate on Staphylococcus aureus of 70%. The products 1b and 1b had a far-infrared detection normal emissivity of as high as 0.89, and an antibacterial rate on Staphylococcus aureus of 82%. The products 1c and 1c had a far-infrared detection normal emissivity of as high as 0.85, and an antibacterial rate on Staphylococcus aureus of 60%.

(13) Infrared detection data were based on GBT 7286.1-1987 Test method for total normal emittance of metals and nonmetallic materials.

(14) Antibacterial test data were based on GB/T 31402-2015 Plastics-Measurement of antibacterial activity on plastics surfaces, taking Staphylococcus aureus as examples.

EXAMPLE 2

(15) A composite polyester material was obtained by the following process: (1) 200 g of a composite having a carbon nanostructure was homogeneously mixed with 8.52 kg of PTA and 3.5L of ethylene glycol, treated by ball milling for 20 min, directly introduced to a beating kettle and beaten for 30 min, reacted according to the three-kettle PET polymerization process and polymerized to obtain a melt; (2) discharging the melt under the conditions of cooling water at 40 C. and a drawing speed of 0.5 m/s, directly pelletizing to obtain a PET material (PET masterbatch) compounded from the composite having a carbon nanostructure;

(16) After step (2), the PET masterbatch compounded from the composite having a carbon nanostructure was drum-dried at 110 C. for 24 h, and directly used for melt-spinning in step (3). The yarn was cooled with water mist at 40 C., dried at 35 C., melt-spun to obtain a composite polyester fiber.

(17) The composites having a carbon nanostructure 1#, 2#, and 3# were respectively used for preparing polyester materials and polyester fibers. The polyester materials were respectively labelled as product 2a (the PET material compounded from 1#), product 2b (the PET material compounded from 2#), product 2c (the PET material compounded from 3#); polyester fibers were respectively labelled as product 2a (the polyester fiber compounded from 1#), product 2b (the polyester fiber compounded from 2#) and product 2c (the polyester fiber compounded from 3#).

(18) The products 2a and 2a had a far-infrared detection normal emissivity of as high as 0.90, and an antibacterial rate on Staphylococcus aureus of 95%. The products 2b and 2b had a far-infrared detection normal emissivity of as high as 0.92, and an antibacterial rate on Staphylococcus aureus of 97%. The products 2c and 2c had a far-infrared detection normal emissivity of as high as 0.88, and an antibacterial rate on Staphylococcus aureus of 90%.

(19) The test methods were the same as those in Example 1.

EXAMPLE 3

(20) A composite polyester material was obtained by the following process: (1) 8.52 kg of PTA, 3.5L of EG and 3.8 g of a catalyst ethylene glycol antimony were beaten for 30 min, reacted according to the three-kettle PET polymerization process and polymerized to obtain a melt; (2) dissolving the melt in trifluoroacetic acid, adding 200 g of a composite having a carbon nanostructure and grinding for 10 min, and homogeneously dispersing;
discharging under the conditions of cooling water at 40 C. and a drawing speed of 0.5 m/s, directly pelletizing to obtain a PET material (PET masterbatch) compounded from the composite having a carbon nanostructure.

(21) After step (2), the PET masterbatch compounded from the composite having a carbon nanostructure was drum-dried at 110 C. for 24 h, and directly used for melt-spinning in step (3). The yarn was cooled with water mist at 40 C., dried at 35 C., melt-spun to obtain a composite polyester fiber.

(22) The composites having a carbon nanostructure 1#, 2#, and 3# were respectively used for preparing polyester materials and polyester fibers. The polyester materials were respectively labelled as product 3a (the PET material compounded from 1#), product 3b (the PET material compounded from 2#), product 3c (the PET material compounded from 3#); polyester fibers were respectively labelled as product 3a (the polyester fiber compounded from 1#), product 3b (the polyester fiber compounded from 2#) and product 3c (the polyester fiber compounded from 3#).

(23) The products 3a and 3a had a far-infrared detection normal emissivity of as high as 0.89, and an antibacterial rate on Staphylococcus aureus of 90%. The products 3b and 3b had a far-infrared detection normal emissivity of as high as 0.90, and an antibacterial rate on Staphylococcus aureus of 95%. The products 3c and 3c had a far-infrared detection normal emissivity of as high as 0.87, and an antibacterial rate on Staphylococcus aureus of 88%.

(24) The test methods were the same as those in Example 1.

EXAMPLE 4

(25) A composite polyester material was obtained by the following process: (1) 600 ml of ethylene glycol was introduced to a beating kettle containing 8.52 kg of PTA and 3L of ethylene glycol, beaten for 30 min after an addition of 3.8 g of ethylene glycol antimony, reacted according to the three-kettle PET polymerization process and polymerized to obtain a melt; excessive EG should be removed during the secondary esterification and polycondensation of the polymerization; (2) heating and melting the melt, adding 300 g of a composite having a nanostructure and grinding for 10 min;
discharging the melt under the conditions of cooling water at 40 C. and a drawings speed of 0.5 m/s, directly pelletizing to obtain a PET material (PET masterbatch) compounded from the composite having a carbon nanostructure;

(26) After step (2), the PET masterbatch compounded from the composite having a carbon nanostructure was drum-dried at 110 C. for 24 h, and directly used for melt-spinning in step (3). The yarn was cooled with water mist at 40 C., dried at 35 C., melt-spun to obtain a composite polyester fiber.

(27) The composites having a carbon nanostructure 1#, 2#, and 3# were respectively used for preparing polyester materials and polyester fibers. The polyester materials were respectively labelled as product 4a (the PET material compounded from 1#), product 4b (the PET material compounded from 2#), product 4c (the PET material compounded from 3#); polyester fibers were respectively labelled as product 4a (the polyester fiber compounded from 1#), product 4b (the polyester fiber compounded from 2#) and product 4c (the polyester fiber compounded from 3#).

(28) The products 4a and 4a had a far-infrared detection normal emissivity of as high as 0.91, and an antibacterial rate on Staphylococcus aureus of 99%. The products 4b and 4b had a far-infrared detection normal emissivity of as high as 0.93, and an antibacterial rate on Staphylococcus aureus of 99%. The products 4c and 4c had a far-infrared detection normal emissivity of as high as 0.89, and an antibacterial rate on Staphylococcus aureus of 93%.

(29) The test methods were the same as those in Example 1.

EXAMPLE 5

(30) A composite polyester material was obtained by the following process: (1) 8.52 kg of PTA and 3.5L of ethylene glycol are weighed in a beating kettle; 3.8 g of ethylene glycol antimony was added and beaten for 30 min, primarily esterified under the conditions of the three-kettle PET polymerization for 40 min, poured to an secondary esterification kettle; a composite having a carbon nanostructure/ethylene glycol slurry having been ball-milled for 20 min (100 g of the composite having a carbon nanostructure/200 mL of ethylene glycol) was introduced to the secondary esterification kettle for subsequent polymerization to obtain a melt; excessive EG should be removed during the secondary esterification and polycondensation of the polymerization; (2) discharging the melt under the conditions of cooling water at 40 C. and a drawings speed of 0.5 m/s, directly pelletizing to obtain a PET material (PET masterbatch) compounded from the composite having a carbon nanostructure;

(31) The composites having a carbon nanostructure 1#, 2#, and 3# were respectively used for preparing polyester materials and polyester fibers. The polyester materials were respectively labelled as product 5a (the PET material compounded from 1#), product 5b (the PET material compounded from 2#), product 5c (the PET material compounded from 3#); polyester fibers were respectively labelled as product 5a (the polyester fiber compounded from 1#), product 5b (the polyester fiber compounded from 2#) and product 5c (the polyester fiber compounded from 3#).

(32) The products 5a and 5a had a far-infrared detection normal emissivity of as high as 0.87, and an antibacterial rate on Staphylococcus aureus of 68%. The products 5b and 5b had a far-infrared detection normal emissivity of as high as 0.88, and an antibacterial rate on Staphylococcus aureus of 75%. The products 5c and 5c had a far-infrared detection normal emissivity of as high as 0.85, and an antibacterial rate on Staphylococcus aureus of 60%.

(33) The test methods were the same as those in Example 1.

EXAMPLE 6

(34) The difference from Example 1 lies in adding 500 g of the composite having a carbon nanostructure.

(35) The composite having a carbon nanostructure 1# was used for preparing polyester material, which was labelled as product 6a (the PET material compounded from 1#); the composite having a carbon nanostructure 1# was used for preparing polyester fiber, which was labelled as product 6a (the polyester fiber compounded from 1#).

(36) The product 6a had a far-infrared detection normal emissivity of as high as 0.92, and an antibacterial rate on Staphylococcus aureus of 99%.

(37) The product 6a had a far-infrared detection normal emissivity of as high as 0.92, and an antibacterial rate on Staphylococcus aureus of 99%.

(38) The test methods were the same as those in Example 1.

EXAMPLE 7

(39) The difference from Example 1 lies in adding 1000 g of the composite having a carbon nanostructure.

(40) The composite having a carbon nanostructure 1# was used for preparing polyester material, which was labelled as product 7a (the PET material compounded from 1#); the composite having a carbon nanostructure 1# was used for preparing polyester fiber, which was labelled as product 7a (the polyester fiber compounded from 1#).

(41) The product 7a had a far-infrared detection normal emissivity of as high as 0.93, and an antibacterial rate on Staphylococcus aureus of 99%.

(42) The product 7a had a far-infrared detection normal emissivity of as high as 0.93, and an antibacterial rate on Staphylococcus aureus of 99%.

(43) The test methods were the same as those in Example 1.

EXAMPLE 8

(44) The difference from Example 1 lies in adding 1200 g of the composite having a carbon nanostructure.

(45) The composite having a carbon nanostructure 1# was used for preparing polyester material, which was labelled as product 8a (the PET material compounded from 1#); the composite having a carbon nanostructure 1# was used for preparing polyester fiber, which was labelled as product 8a (the polyester fiber compounded from 1#).

(46) The product 8a had a far-infrared detection normal emissivity of as high as 0.93, and an antibacterial rate on Staphylococcus aureus of 99%.

(47) The product 8a had a far-infrared detection normal emissivity of as high as 0.93, and an antibacterial rate on Staphylococcus aureus of 99%.

(48) The test methods were the same as those in Example 1.

Comparison Example 1

(49) The difference from Example 1 merely lies in adding no composite having a carbon nanostructure during the polyester polymerization.

(50) The polyester material prepared in Comparison Example 1 had a far-infrared detection normal emissivity of as high as 0.76, and an antibacterial rate on Staphylococcus aureus of 0%.

(51) The polyester fiber prepared in Comparison Example 1 had a far-infrared detection normal emissivity of as high as 0.76, and an antibacterial rate on Staphylococcus aureus of 0%.

(52) The test methods were the same as those in Example 1.

Comparison Example 2

(53) The difference from Example 1 lies in adding 1400 g of the composite having a carbon nanostructure.

(54) The polyester material prepared from the composite having a carbon nanostructure 1# in Comparison Example 2 had a far-infrared detection normal emissivity of as high as 0.83, and an antibacterial rate on Staphylococcus aureus of 80%.

(55) The polyester fiber prepared from the composite having a carbon nanostructure 1# in Comparison Example 2 had a far-infrared detection normal emissivity of as high as 0.83, and an antibacterial rate on Staphylococcus aureus of 80%.

(56) The test methods were the same as those in Example 1.

Comparison Example 3

(57) The specific conditions of a process for preparing a composite polyurethane foam differs from those in Example 1 in replacing the composite having a carbon nanostructure prepared in the example with commercially available graphene, mixing with 1 g of phosphorus pentoxide, 1 g of silicon dioxide powder, 1 g of calcium chloride, 1 g of aluminium oxide, 1 g of sodium carbonate, 1 g of magnesium chloride and 1 g of ferrous chloride and adding into polyether glycol, introducing elements of P, Si, Ca, Al, Na, Fe, Mg, wherein Raman spectrum showed a peak height ratio of the G peak and D peak of 6.8.

(58) The polyester material prepared in Comparison Example 3 had a far-infrared detection normal emissivity of as high as 0.87, and an antibacterial rate on Staphylococcus aureus of 88%.

(59) The polyester fiber prepared in Comparison Example 3 had a far-infrared detection normal emissivity of as high as 0.87, and an antibacterial rate on Staphylococcus aureus of 88%.

(60) The test methods were the same as those in Example 1.

(61) The applicant declares that the present application discloses the process of the present invention via the aforesaid examples. However, the present invention is not limited by the aforesaid process steps. That is to say, it does not mean that the present invention cannot be carried out unless the aforesaid process steps are carried out. Those skilled in the art shall know that any improvement, equivalent replacement of the parts of the present invention, addition of auxiliary parts, selection of specific modes and the like all fall within the protection scope and disclosure of the present invention.