Polyester blended yarn and production process thereof

Abstract

The invention relates to the technical field of polyester fabrics, and discloses a polyester blended yarn and a production process thereof to solve the problem that the air permeability of the polyester fabric is further improved due to the fact that the anti-static effect of the existing anti-static polyester fiber fabric is achieved by additionally arranging or externally covering an anti-static material. The production process of the polyester blended yarn comprises the following steps: S1, mixing composite binary acid with polyol, adding three-dimensional reticular graphene, uniformly mixing, placing in an inert gas atmosphere, and heating for reaction; adding a polycondensation catalyst, continuously heating and reacting to obtain a polyester melt, and extruding and spinning to obtain polyester fibers; and S2, mixing the polyester fibers obtained in the step S1 with collagenous fibers, soaking in a carbonic acid solution, ultrasonically dispersing, heating and drying, and carrying out twill weaving to obtain the polyester blended yarns. Polyester fiber polycondensation raw materials are improved and combined with three-dimensional net-shaped graphene to achieve the effects of good anti-static effect and air permeability at the same time under the combined action of the three-dimensional net-shaped graphene and the polyester fiber polycondensation raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of polyester fabrics, and in particular to a polyester blended yarn and a production process thereof. Background Art

[0002] Polyester fiber is a synthetic fiber made from organic dibasic acid and diol by chemical polycondensation reaction, commonly known as polyester. Polyester has excellent wrinkle resistance and shape retention. Clothes made from it are not easy to wrinkle during wearing and can maintain their original shape. It also has high strength and elastic recovery ability, making the woven fabric strong and durable and can quickly recover to its original shape. In addition, it also has the characteristics of wear resistance and non-stickiness, making the fabric look neater.

[0003] However, polyester fibers will generate static electricity during production and use, thereby accumulating a large amount of dust, affecting the production environment and comfort of use. In this regard, the patent with publication number CN115723400A provides an anti-static warp knitted fabric and its preparation process, using modified polyester fiber and wool fiber as skin-friendly raw materials, and sequentially setting an insulation layer, an anti-static layer, and an antibacterial layer. The modified polyester fiber has good hydrophobicity, tensile strength and anti-static ability, which can effectively improve the waterproof effect, tensile strength and anti-static effect of the textile fabric, thereby effectively improving the use performance of the textile fabric.

[0004] In addition to anti-static, the existing polyester fiber fabrics such as the above-mentioned ones also face multiple performance requirements such as warmth retention and breathability. However, the existing anti-static polyester fiber fabrics mostly achieve the anti-static effect by adding or covering anti-static materials, which will further aggravate the problem of poor air permeability of polyester fabrics. Summary of the invention

[0005] The technical problems to be solved by the present invention are:

[0006] At present, in order to solve the problem of static electricity in polyester fiber fabrics, the polyester fiber is modified by adding or covering it with antistatic materials. However, although the above treatment method can solve the serious static electricity problem of polyester fiber fabrics, it will make the polyester fiber fabrics with poor air permeability even less air permeable and less hygroscopic, which will affect its comfort during use.

[0007] The technical solution adopted by the present invention is:

[0008] The present invention provides a production process of polyester blended yarn, comprising the following steps:

[0009] S1: mixing the composite dibasic acid and the polyol, adding the three-dimensional network graphene, mixing evenly, placing in an inert gas atmosphere, and heating to react; then adding a polycondensation catalyst, continuing to heat the reaction, obtaining a polyester melt, and extruding and spinning to obtain polyester fibers;

[0010] S2: the polyester fiber obtained in step S1 is mixed with the collagen fiber, and the mixture is soaked in a carbonic acid solution, ultrasonically dispersed, heated and dried, and twill-woven to obtain the polyester blended yarn.

[0011] Preferably, in step S1, the method for preparing the three-dimensional network graphene comprises the following steps:

[0012] The carbon nanomaterial is placed in an inert gas environment, heated to above 1450°C, and allowed to stand; then transferred to a methane solution, immersed and stirred, cooled to below 1000°C, allowed to stand for reaction, taken out and cooled to room temperature to obtain the three-dimensional network graphene.

[0013] Preferably, the heating rate of the carbon nanomaterial in an inert gas environment is 8-25° C. / s.

[0014] Preferably, the particle size of the carbon nanomaterial is 500-800 nm.

[0015] Preferably, in step S1, the pressure of the inert gas atmosphere is less than 0.5 MPa.

[0016] Preferably, in step S1, the previous heating temperature is 135-155°C, and the reaction time is 1.5-3.2h;

[0017] The heating temperature after adding the polycondensation catalyst is 220-250°C, and the reaction time is 0.75-1.2h.

[0018] Preferably, the composite dibasic acid comprises an organic dibasic acid and maleic anhydride, wherein the organic dibasic acid can be selected from one or more of 1,4-butanediol, 1,6-hexanediol, suberic acid and azelaic acid; and the polyol molecule contains a branched structure.

[0019] Preferably, the polyol may be selected from one or more of 1,6-hexanediol and 2-butyl-2-ethyl-1,3-propanediol.

[0020] Preferably, in step S2, the mass ratio of polyester fiber to collagen fiber is 1-1.2:0.85-1.05.

[0021] The beneficial effects of the present invention are as follows:

[0022] The polyester blended yarn of the present invention uses a polyol containing a branched structure and a composite dibasic acid for condensation polymerization during the production process to form polyester fibers with relatively higher steric hindrance, that is, the spatial pores of the polyester fibers are enlarged, and the air circulation paths are made more diverse, thereby improving the air permeability of the polyester fibers. In addition, within a certain range, the steric hindrance is relatively larger, which can reduce the contact area between the polyester fibers, thereby reducing the accumulation of static electricity and achieving the effect of reducing the generation of static electricity.

[0023] Furthermore, three-dimensional mesh graphene with a spatial three-dimensional structure is introduced into the polyester fiber to make its surface rough and plush, which promotes the flow of air on its surface, thereby improving the air permeability of the polyester fiber yarn. The rough state of its surface can also alleviate the electron transfer caused by friction, thereby reducing the formation of static charge and exerting an antistatic effect, so that both good antistatic effect and breathability can be taken into account at the same time. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased commercially.

[0025] The present invention provides a polyester blended yarn and a production process thereof, wherein the production process comprises the following steps:

[0026] (1) Preparation of polyester fiber

[0027] The composite dibasic acid and the polyol are mixed in a stoichiometric ratio, and three-dimensional network graphene is added, stirred and mixed, placed in a closed reactor, and an inert gas is introduced until the pressure in the reactor is less than 0.5MPa; then heated to 135-155°C, stirred and reacted for 1.5-3.2h; then a condensation catalyst is added, heated to 220-250°C, reacted for 0.75-1.2h, and a polyester melt is obtained; finally, polyester fibers are prepared by extrusion spinning.

[0028] Among them, the composite dibasic acid includes an organic dibasic acid and maleic anhydride, and the organic dibasic acid can be selected from one or more of 1,4-butanediol, 1,6-hexanediol, suberic acid, azelaic acid, etc.; the polyol molecule contains a branched structure, which can be selected from one or more of 1,6-hexanediol and 2-butyl-2-ethyl-1,3-propanediol, etc.

[0029] (2) Preparation of polyester blended yarn

[0030] The polyester fiber prepared above was mixed with collagen fiber at a mass ratio of 1-1.2:0.85-1.05, immersed in a carbonate solution, ultrasonically dispersed for 30-45 minutes, heated and dried, and then twill woven to obtain polyester blended yarn.

[0031] In the present invention, a three-dimensional network graphene in a polyester fiber is prepared, and the preparation method thereof comprises the following steps:

[0032] Take the carbon nanomaterial, place it in an inert gas environment, quickly heat it to above 1450°C at 8-25°C / s, and let it stand for 3-5 minutes; then transfer it to a methane solution, immerse and stir it for 3-10 minutes until the temperature drops below 1000°C, let it stand for reaction for 2-3.5 hours, and then cool it to room temperature to obtain a three-dimensional network graphene, which has a three-dimensional network structure and good bonding strength, and can enrich the surface space structure of the polyester fiber, making its surface present a multi-porous plush state.

[0033] The carbon nanomaterial may be any one or more of carbon nanotubes, carbon nanofibers, nanographite powder, etc., and the particle size of the carbon nanomaterial is 500-800 nm.

[0034] The present invention modifies the polyester fiber so that its surface is rough and plush, which promotes the flow of air on its surface, thereby improving the air permeability of the polyester fiber yarn. The rough state of its surface can also alleviate the electron transfer caused by friction, thereby reducing the formation of static charge and exerting an antistatic effect, thereby achieving both good antistatic effect and air permeability.

[0035] Example 1

[0036] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0037] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add 0.3wt% triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0038] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0039] Example 2

[0040] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 530±20nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10℃ / s to about 1500℃, keep it warm and let it stand for 3.5min; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5min until the temperature drops below 1000℃, keep it warm and let it stand for 2.5h, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0041] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0042] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0043] Example 3

[0044] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 750±20nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10℃ / s to about 1500℃, keep it warm and let it stand for 3.5min; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5min until the temperature drops below 1000℃, keep it warm and let it stand for 2.5h, take out the carbon nanotubes, cool them to room temperature, and obtain three-dimensional network graphene.

[0045] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0046] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0047] Example 4

[0048] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0049] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 12 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0050] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0051] Example 5

[0052] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0053] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 35 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0054] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0055] Example 6

[0056] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0057] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 80 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0058] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0059] Example 7

[0060] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0061] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 130 parts by mass of 1,6-hexanediol, and add three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0062] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0063] Example 8

[0064] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0065] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 136°C, stir and react for 3.2h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0066] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0067] Example 9

[0068] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0069] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 155°C, stir and react for 1.65h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0070] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0071] Example 10

[0072] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0073] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 225°C, react for 1.2h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0074] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0075] Embodiment 11

[0076] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0077] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 250°C, react for 0.75h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0078] Step 3: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn through twill weaving.

[0079] Example 12

[0080] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0081] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0082] Step 3: Take 12 parts by weight of polyester fiber and 8.6 parts by weight of collagen fiber respectively, mix them, soak them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn by twill weaving.

[0083] Embodiment 13

[0084] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0085] Step 2: Take 70 parts by mass of 1,4-butanediol, 39.2 parts by mass of maleic anhydride and 118 parts by mass of 1,6-hexanediol, and add 25 parts by mass of three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0086] Step 3: Take 10.5 parts by weight of polyester fiber and 11 parts by weight of collagen fiber respectively, mix them, immerse them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester blended yarn by twill weaving.

[0087] Comparative Example 1

[0088] Step 1: Take 1,4-butanediol, maleic anhydride and 1,6-hexanediol, stir and mix them, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0089] Step 2: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, soak them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester yarn by twill weaving.

[0090] Comparative Example 2

[0091] Step 1: Take terephthalic acid and ethylene glycol, stir and mix them, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0092] Step 2: Take 15.5 parts by weight of polyester fiber and 13.8 parts by weight of collagen fiber respectively, mix them, soak them in a carbonate solution for 2 hours, and ultrasonically disperse them for 40 minutes, then heat them to about 85°C and dry them, and prepare polyester yarn by twill weaving.

[0093] Comparative Example 3

[0094] Step 1: Take 20 parts by mass of carbon nanotubes with a particle size of 600±20 nm, place them in a high-temperature furnace, introduce argon gas and exhaust the air, heat at a heating rate of 10°C / s to about 1500°C, keep it warm and let it stand for 3.5 minutes; take out the carbon nanotubes and put them in 2 times the volume of methane solution, stir and soak them at 550rpm for 5 minutes until the temperature drops below 1000°C, keep it warm and let it stand for 2.5 hours, take out the carbon nanotubes, cool to room temperature, and obtain three-dimensional network graphene.

[0095] Step 2: Take 1,4-butanediol, maleic anhydride and 1,6-hexanediol, and add three-dimensional network graphene, stir and mix, and introduce equal volumes of argon and hydrogen into a closed reactor to fully fill the internal environment of the reactor, and control the internal pressure of the reactor to be about 0.3MPa; then heat the reactor to 150°C, stir and react for 2.5h; then add triethanolamine, further heat to 240°C, react for 1h, obtain a polyester melt, and obtain polyester fiber through extrusion spinning.

[0096] Step 3: Take the polyester fiber, soak it in a carbonate solution for 2 hours, and ultrasonically disperse it for 40 minutes, then heat it to about 85°C and dry it, and prepare the polyester yarn through twill weaving.

[0097] Test example

[0098] Samples: Examples 1-13, Comparative Examples 1-3

[0099] The polyester yarns prepared in Examples 1-13 and Comparative Examples 1-3 were respectively taken as samples, and the moisture permeability and other material properties of each sample were measured in turn. The measurement method and test results are summarized in Table 1 below:

[0100] Table 1 Material properties test results of different samples

[0101]

[0102]

[0103] As can be seen from Table 1 above, the polyester yarns prepared in Examples 1 to 13 are significantly better than the polyester yarns prepared in Comparative Examples 1 to 3 in the parameter measurement results of moisture permeability, air permeability, and specific resistivity. Therefore, it can be explained that the polyester blended yarn and its production process used in the present invention can improve the performance shortcomings of the existing polyester blended yarn, such as airtightness and non-hygroscopicity, and at the same time maintain good antistatic properties.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A production process for polyester blended yarn, characterized in that: The steps include: S1: mixing the composite dibasic acid and the polyol, adding the three-dimensional network graphene, mixing evenly, placing in an inert gas atmosphere, and heating to react; then adding a polycondensation catalyst, continuing to heat the reaction, obtaining a polyester melt, and extruding and spinning to obtain polyester fibers; S2: the polyester fiber obtained in step S1 is mixed with the collagen fiber, and the mixture is soaked in a carbonic acid solution, ultrasonically dispersed, heated and dried, and twill-woven to obtain the polyester blended yarn.

2. The production process of polyester blended yarn according to claim 1, characterized in that: In step S1, the method for preparing the three-dimensional network graphene comprises the following steps: The carbon nanomaterial is placed in an inert gas environment, heated to above 1450°C, and allowed to stand; then transferred to a methane solution, immersed and stirred, cooled to below 1000°C, allowed to stand for reaction, taken out and cooled to room temperature to obtain the three-dimensional network graphene.

3. The production process of polyester blended yarn according to claim 2, characterized in that: The heating rate of carbon nanomaterials in an inert gas environment is 8-25°C / s.

4. The production process of polyester blended yarn according to claim 2, characterized in that: The particle size of carbon nanomaterials is 500-800nm.

5. The production process of polyester blended yarn according to claim 1, characterized in that: In step S1 , the pressure of the inert gas atmosphere is less than 0.5 MPa.

6. The production process of polyester blended yarn according to claim 5, characterized in that: In step S1, the previous heating temperature is 135-155°C, and the reaction time is 1.5-3.2h; The heating temperature after adding the polycondensation catalyst is 220-250°C, and the reaction time is 0.75-1.2h.

7. The production process of polyester blended yarn according to any one of claims 1 to 6, characterized in that: The composite dibasic acid comprises an organic dibasic acid and maleic anhydride, and the organic dibasic acid can be selected from one or more of 1,4-succinic acid, 1,6-hexanediol, suberic acid, and azelaic acid; And the polyol molecules contain branched structures.

8. The production process of polyester blended yarn according to claim 7, characterized in that: The polyol may be selected from one or more of 1,6-hexanediol and 2-butyl-2-ethyl-1,3-propanediol.

9. The production process of polyester blended yarn according to claim 1, characterized in that: In step S2, the mass ratio of polyester fiber to collagen fiber is 1-1.2:0.85-1.

05.

10. Polyester blended yarn prepared by the production process according to any one of claims 1 to 9.

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