Functional polyester yarn and preparation method thereof

Abstract

The invention discloses a functional polyester yarn and a preparation method thereof. The functional polyester yarn is formed by blending functional synthetic fibers and bamboo fibers according to the mass ratio of (3-5): 0.5. The functional synthetic fiber is prepared from the following raw materials: polyester chips, a functional copolymer, a compatilizer, an antioxidant, a lubricant, 1, 4-diamino-2, 3-dicyanoanthraquinone and (3, 6-diamino-9-acridinyl) boric acid. The functional copolymer comprises structural units introduced by the following monomers: diphenyl (4-vinyl phenyl) phosphine oxide, 4-methyl-5-vinyl thiazole, 1-allyl-3-methyl imidazole chloride, 3-(1, 1-difluoro-2-propylene-1-yl)-2 (1H)-quinoxalinone, and 1, 3-bis (oxiranyl methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone. The yarn is good in anti-ultraviolet performance, flame retardant performance and antibacterial performance.

Description

Technical Field

[0001] The present invention relates to the technical field of textiles, and particularly to a functional polyester yarn and a preparation method thereof. Background Art

[0002] Polyester fiber, commonly known as "polyester", has characteristics such as high strength, good elasticity, and high melting point, good heat resistance and adiabatic performance, and is strong, durable, easy to wash and quick to dry, and is widely used in the clothing field and industrial products. Polyester yarn refers to the yarn spun from polyester. With the progress of society, the chemical fiber industry has developed greatly, the market demand for polyester yarn products is increasing, and the functional requirements for polyester yarn products are also getting higher and higher. Polyester yarn products are developing towards high comfort, high functionality, and high environmental protection.

[0003] Existing polyester yarns have a single function and more or less have technical defects such as limited ultraviolet resistance, poor antibacterial performance, and insufficient flame retardant performance, and cannot fully meet the needs of consumers. To solve the above problems, the Chinese invention patent with the application publication number CN115838983A discloses a preparation method of a functional polyester yarn, and the method includes the following steps: S1: The fiber filaments formed by POY and FDY are combined, and a saponification reaction is realized by spraying an alkaline catalyst on the surface thereof; S2: The polyester fiber treated by the combined yarn in step S1 is subjected to a co-bath treatment through a silver ion co-solvent under the condition of not less than 50 °C; S3: The fiber treated by S2 is subjected to low-temperature dehydration and rapid cooling, and the fiber filaments are false-twisted, plied, and double-twisted and then subjected to low-temperature setting through a low-temperature hot box; S4: The fiber set in step S3 is subjected to air doubling, and at the same time, the networked single filaments are subjected to loose network dotting; S5: The fiber in S4 is subjected to steam setting treatment, and finally constant-tension winding is carried out to complete the preparation of the functional polyester yarn. This method of this application can improve the hygroscopicity, dyeability, pilling resistance, constant temperature regulation performance, and antibacterial and bacteriostatic performance of polyester fibers, so as to achieve the effects of quick drying, easy dyeing, reducing static electricity, soft cotton feel, and reducing yarn slippage. However, its ultraviolet resistance and flame retardant performance still need to be further improved.

[0004] It can be seen that developing a functional polyester yarn with good ultraviolet resistance, flame retardant performance, and antibacterial performance and a preparation method thereof meets the market demand, has broad market value and application prospects, and is of great significance to promoting the development of the field of functional polyester yarns. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a functional polyester yarn with good ultraviolet resistance, flame retardant performance, and antibacterial performance and a preparation method thereof.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A functional polyester yarn is spun from functional synthetic fibers and bamboo fibers in a mass ratio of (3 - 5):0.5; the functional synthetic fibers are made from the following raw materials by weight: 100 parts of polyester chips, 10 - 20 parts of functional copolymer, 1 - 3 parts of compatibilizer, 0.7 - 1.2 parts of antioxidant, 0.9 - 1.3 parts of lubricant, 2 - 4 parts of 1,4 - diamino - 2,3 - dicyanoanthraquinone, 1 - 3 parts of (3,6 - diamino - 9 - acridinyl)boronic acid; the functional copolymer includes structural units introduced by the following monomers: diphenyl(4 - vinylphenyl)phosphine oxide, 4 - methyl - 5 - vinylthiazole, 1 - allyl - 3 - methylimidazolium chloride, 3-(1,1 - difluoro - 2 - propen - 1 - yl)-2(1H)-quinoxalinone, 1,3 - bis(oxiranylmethyl)-5-(2 - propenyl)-1,3,5 - triazine - 2,4,6(1H,3H,5H)-trione.

[0008] Preferably, the fineness of the functional synthetic fibers is 1.0 - 2.0 D, and the length is 30 - 50 mm; the fineness of the bamboo fibers is 1.3 - 1.8 D, and the length is 35 - 45 mm.

[0009] Preferably, the polyester chips are the special polyester chips 224 for industrial yarns produced by Sinopec.

[0010] Preferably, the preparation method of the functional copolymer includes the following steps: adding diphenyl(4 - vinylphenyl)phosphine oxide, 4 - methyl - 5 - vinylthiazole, 1 - allyl - 3 - methylimidazolium chloride, 3-(1,1 - difluoro - 2 - propen - 1 - yl)-2(1H)-quinoxalinone, 1,3 - bis(oxiranylmethyl)-5-(2 - propenyl)-1,3,5 - triazine - 2,4,6(1H,3H,5H)-trione, and an initiator into a high - boiling - point solvent, stirring and reacting at 60 - 70 °C for 3 - 6 h in an inert gas atmosphere, then precipitating in water, and washing the precipitated polymer with ethanol 3 - 6 times, and finally drying it in a vacuum drying oven at 85 - 95 °C to constant weight to obtain the functional copolymer.

[0011] Preferably, the mass ratio of diphenyl(4 - vinylphenyl)phosphine oxide, 4 - methyl - 5 - vinylthiazole, 1 - allyl - 3 - methylimidazolium chloride, 3-(1,1 - difluoro - 2 - propen - 1 - yl)-2(1H)-quinoxalinone, 1,3 - bis(oxiranylmethyl)-5-(2 - propenyl)-1,3,5 - triazine - 2,4,6(1H,3H,5H)-trione, the initiator, and the high - boiling - point solvent is (1 - 3):1:(1 - 2):0.4:(0.5 - 0.8):(0.04 - 0.08):(20 - 30).

[0012] Preferably, the initiator is azobisisobutyronitrile; and the high boiling point solvent is at least one of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone.

[0013] Preferably, the inert gas is any one of nitrogen, helium, neon and argon.

[0014] Preferably, the compatibilizer is SMA-725 was provided by Jiaxing Huawen Chemical Co., Ltd.

[0015] Preferably, the antioxidant is at least one of antioxidant 1010 and antioxidant 168; the lubricant is at least one of pentaerythritol stearate and ethylene bisstearamide.

[0016] Another object of the present invention is to provide a method for preparing the functional polyester yarn, comprising the following steps:

[0017] Step S1, preparation of functional synthetic fiber: polyester chips, functional copolymers, compatibilizers, antioxidants and lubricants are uniformly mixed to obtain spinning raw materials, the spinning raw materials are added into a composite spinning machine for spinning, and then subjected to drafting processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, curing, water washing and drying to obtain functional synthetic fibers;

[0018] Step S2: mixing the functional synthetic fiber and the bamboo fiber according to the mass ratio to produce the functional polyester yarn in a yarn mixing machine.

[0019] Preferably, the spinning temperature in step S1 is 255-280° C., and the spinning winding speed is 800-1500 m / min.

[0020] Preferably, the stretching processing parameters in step S1 are a stretching multiple of 3-5 times, a hot plate stretching temperature of 50-65°C, and a hot plate stretching temperature of 115-135°C.

[0021] Preferably, the mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid is 1:(10-20).

[0022] Preferably, the curing temperature is 70-80° C. and the curing time is 1-2 hours.

[0023] The beneficial effects of adopting the above technical solution are:

[0024] (1) The preparation method of the functional polyester yarn provided by the present invention has a simple process, convenient operation and control, high preparation efficiency and high finished product qualification rate. It does not require special equipment and production lines, with less capital investment, low labor intensity, and little environmental impact. It is suitable for continuous large-scale production, has high popularization and application value, and obvious social benefits.

[0025] (2) The functional polyester yarn provided by the present invention is spun from functional synthetic fiber and bamboo fiber in a mass ratio of (3 - 5):0.5, combining the advantages of both, and endowing the polyester yarn product with multiple functions such as antibacterial, flame retardant, and anti-ultraviolet; the functional synthetic fiber is made from the following raw materials in parts by weight: 100 parts of polyester chips, 10 - 20 parts of functional copolymer, 1 - 3 parts of compatibilizer, 0.7 - 1.2 parts of antioxidant, 0.9 - 1.3 parts of lubricant, 2 - 4 parts of 1,4-diamino-2,3-dicyanoanthraquinone, and 1 - 3 parts of (3,6-diamino-9-acridinyl)boronic acid; through the mutual cooperation and joint action of the raw materials, the prepared polyester yarn product has good anti-ultraviolet performance and flame retardant performance, and excellent antibacterial performance.

[0026] (3) For the functional polyester yarn provided by the present invention, the functional copolymer includes the structural units introduced by the following monomers: diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione. By simultaneously introducing phenylphosphine oxide, thiazole, imidazolium salt, fluorinated quinoxalinone, and triazinone structures into the molecular structure of the functional copolymer, under the multiple actions of electronic effect, steric effect, and conjugation effect, the prepared functional copolymer has better anti-ultraviolet performance and flame retardant performance, better antibacterial performance, and longer service life.

[0027] (4) For the functional polyester yarn provided by the present invention, the amino groups on 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boronic acid can undergo epoxy ring-opening reaction with the epoxy groups introduced into the copolymer molecular structure; the boronic acid group on (3,6-diamino-9-acridinyl)boronic acid can undergo ion exchange reaction with the imidazolium salt structure introduced into the copolymer molecular structure to form an interpenetrating network structure, and at the same time, the introduced cyanoanthraquinone and acridinyl structures cooperate with other groups or structures, making the prepared product have better anti-ultraviolet performance and flame retardant performance, better mechanical and mechanical properties, and longer service life. Detailed implementation mode

[0028] To enable those skilled in the art to better understand the technical solution of the present invention and make the above features, objectives, and advantages of the present invention clearer and more understandable, the present invention will be further described below in conjunction with embodiments. The embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0029] Example 1

[0030] A functional polyester yarn is spun from functional synthetic fibers and bamboo fibers in a mass ratio of 3:0.5; the functional synthetic fibers are made from the following raw materials in parts by weight: 100 parts of polyester chips, 10 parts of functional copolymer, 1 part of compatibilizer, 0.7 part of antioxidant, 0.9 part of lubricant, 2 - 4 parts of 1,4 - diamino - 2,3 - dicyanoanthraquinone, and 1 - 3 parts of (3,6 - diamino - 9 - acridinyl)boronic acid; the functional copolymer includes structural units introduced by the following monomers: diphenyl(4 - vinylphenyl)phosphine oxide, 4 - methyl - 5 - vinylthiazole, 1 - allyl - 3 - methylimidazolium chloride, 3 - (1,1 - difluoro - 2 - propen - 1 - yl)-2(1H)-quinoxalinone, 1,3 - bis(oxiranylmethyl)-5-(2 - propenyl)-1,3,5 - triazine - 2,4,6(1H,3H,5H)-trione.

[0031] The fineness of the functional synthetic fibers is 1.0D and the length is 30mm, and the fineness of the bamboo fibers is 1.3D and the length is 35mm; the polyester chips are the special polyester chips for industrial yarns produced by Sinopec 224.

[0032] The preparation method of the functional copolymer comprises the following steps: adding diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, and an initiator into a high-boiling solvent, stirring and reacting at 60 °C for 3 h under an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol three times, and finally drying it in a vacuum drying oven at 85 °C to constant weight to obtain the functional copolymer; the mass ratio of diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, the initiator, and the high-boiling solvent is 1:1:1:0.4:0.5:0.04:20; the initiator is azobisisobutyronitrile; the high-boiling solvent is dimethyl sulfoxide; the inert gas is nitrogen. Through GPC testing, the M n of this functional copolymer is measured to be 16752 g / mol, and M W / M n is 1.381; through elemental analysis and weight change calculation, the mass ratio of the structural units introduced by diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, and 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione in this functional copolymer is 0.99:1:0.98:0.38.

[0033] The compatibilizer is SMA-725, provided by Jiaxing Huawei Chemical Co., Ltd.; the antioxidant is antioxidant 1010; the lubricant is pentaerythritol stearate.

[0034] A preparation method of the functional polyester yarn comprises the following steps:

[0035] Step S1. Preparation of functional synthetic fiber: Polyester chips, functional copolymer, compatibilizer, antioxidant, and lubricant are mixed evenly to obtain spinning raw materials. The spinning raw materials are added to a composite spinning machine for spinning, followed by drawing processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boronic acid, curing, water washing, and drying to obtain the functional synthetic fiber;

[0036] Step S2. The functional synthetic fiber and bamboo fiber are proportioned by mass and made into the functional polyester yarn in a yarn mixing machine.

[0037] In step S1, the spinning temperature is 255°C, and the spinning winding speed is 800 m / min; the drawing processing parameters in step S1 are a draw ratio of 4.2 times, a hot plate stretching temperature of 50°C, and a hot plate stretching temperature of 115°C; in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boronic acid, the mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide is 1:10; the curing temperature is 70°C, and the time is 1 h.

[0038] Example 2

[0039] A functional polyester yarn is spun from a functional synthetic fiber and bamboo fiber in a mass ratio of 3.5:0.5; the functional synthetic fiber is made from the following raw materials in parts by weight: 100 parts of polyester chips, 13 parts of functional copolymer, 1.5 parts of compatibilizer, 0.8 part of antioxidant, 1 part of lubricant, 2.5 parts of 1,4-diamino-2,3-dicyanoanthraquinone, and 1.5 parts of (3,6-diamino-9-acridinyl)boronic acid; the functional copolymer includes the structural units introduced by the following monomers: diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione.

[0040] The fineness of the functional synthetic fiber is 1.3 D, and the length is 35 mm. The fineness of the bamboo fiber is 1.4 D, and the length is 37 mm; the polyester chips are the industrial silk special polyester chips 224 produced by Sinopec.

[0041] The preparation method of the functional copolymer comprises the following steps: adding diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, and an initiator into a high-boiling solvent, stirring and reacting at 63 °C for 4 h in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol 4 times, and finally drying in a vacuum drying oven at 87 °C to constant weight to obtain the functional copolymer; the mass ratio of diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, the initiator, and the high-boiling solvent is 1.5:1:1.2:0.4:0.6:0.05:23; the initiator is azobisisobutyronitrile; the high-boiling solvent is N,N-dimethylformamide; the inert gas is helium.

[0042] The compatibilizer is SMA-725, provided by Jiaxing Huawei Chemical Co., Ltd.; the antioxidant is antioxidant 168; the lubricant is ethylene bisstearamide.

[0043] A preparation method of the functional polyester yarn comprises the following steps:

[0044] Step S1, preparation of functional synthetic fiber: mixing polyester chips, functional copolymer, compatibilizer, antioxidant, and lubricant evenly to obtain a spinning raw material, adding the spinning raw material into a composite spinning machine for spinning, then through drawing processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, curing, water washing, and drying to obtain the functional synthetic fiber;

[0045] Step S2, proportioning the functional synthetic fiber and bamboo fiber by mass ratio, and making the functional polyester yarn in a yarn mixing machine.

[0046] In step S1, the spinning temperature is 265 °C and the spinning winding speed is 900 m / min; the drawing processing parameters in step S1 are a draw ratio of 4.2 times, a hot plate stretching temperature of 55 °C, and a hot plate stretching temperature of 120 °C; in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, the mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide is 1:13; the curing temperature is 72 °C and the time is 1.2 h.

[0047] Example 3

[0048] A functional polyester yarn is blended from functional synthetic fiber and bamboo fiber in a mass ratio of 4:0.5; the functional synthetic fiber is made from the following raw materials in parts by weight: 100 parts of polyester chips, 15 parts of functional copolymer, 2 parts of compatibilizer, 0.9 part of antioxidant, 1.1 part of lubricant, 3 parts of 1,4-diamino-2,3-dicyanoanthraquinone, and 2 parts of (3,6-diamino-9-acridinyl)boric acid; the functional copolymer includes structural units introduced by the following monomers: diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione.

[0049] The fineness of the functional synthetic fiber is 1.5 D and the length is 40 mm, and the fineness of the bamboo fiber is 1.5 D and the length is 40 mm; the polyester chips are the special polyester chips 224 for industrial yarns produced by Sinopec.

[0050] The preparation method of the functional copolymer comprises the following steps: adding diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, and an initiator into a high-boiling solvent, stirring and reacting at 65 °C for 4.5 h under an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol 5 times, and finally drying to a constant weight at 90 °C in a vacuum drying oven to obtain the functional copolymer; the mass ratio of diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, the initiator, and the high-boiling solvent is 2:1:1.5:0.4:0.65:0.06:25; the initiator is azobisisobutyronitrile; the high-boiling solvent is N,N-dimethylformamide; the inert gas is helium.

[0051] The compatibilizer is SMA-725, provided by Jiaxing Huawei Chemical Co., Ltd.; the antioxidant is antioxidant 1010; the lubricant is ethylene bisstearamide.

[0052] Another object of the present invention is to provide a preparation method of the functional polyester yarn, comprising the following steps:

[0053] Step S1, preparation of functional synthetic fiber: mixing polyester chips, functional copolymer, compatibilizer, antioxidant, and lubricant evenly to obtain a spinning raw material, adding the spinning raw material into a composite spinning machine for spinning, then through drawing processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, curing, water washing, and drying to obtain the functional synthetic fiber;

[0054] Step S2, proportioning the functional synthetic fiber and bamboo fiber by mass ratio, and making the functional polyester yarn in a yarn mixing machine.

[0055] In step S1, the spinning temperature of the spinning is 270 °C, and the spinning winding speed is 1200 m / min; the drawing processing parameters in step S1 are a draw ratio of 4.2 times, a hot plate stretching temperature of 59 °C, and a hot plate stretching temperature of 125 °C; in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, the mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide is 1:15; the curing temperature is 75 °C and the time is 1.5 h.

[0056] Example 4

[0057] A functional polyester yarn is spun from functional synthetic fibers and bamboo fibers in a mass ratio of 4.5:0.5; the functional synthetic fibers are made from the following raw materials by weight: 100 parts of polyester chips, 18 parts of functional copolymer, 2.5 parts of compatibilizer, 1.1 parts of antioxidant, 1.2 parts of lubricant, 3.5 parts of 1,4-diamino-2,3-dicyanoanthraquinone, and 2.5 parts of (3,6-diamino-9-acridinyl)boric acid; the functional copolymer includes the structural units introduced by the following monomers: diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione.

[0058] The fineness of the functional synthetic fiber is 1.8 D and the length is 45 mm, and the fineness of the bamboo fiber is 1.7 D and the length is 43 mm; the polyester chips are the special polyester chips 224 for industrial yarns produced by Sinopec.

[0059] The preparation method of the functional copolymer comprises the following steps: adding diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, and an initiator into a high-boiling solvent, stirring and reacting at 68 °C for 5.5 h under an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol 6 times, and finally drying to constant weight at 93 °C in a vacuum drying oven to obtain the functional copolymer; the mass ratio of diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, the initiator, and the high-boiling solvent is 2.5:1:1.8:0.4:0.75:0.075:28; the initiator is azobisisobutyronitrile; the high-boiling solvent is a mixture of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone in a mass ratio of 1:2:2; the inert gas is argon.

[0060] The compatibilizer is SMA-725, provided by Jiaxing Huawei Chemical Co., Ltd.; the antioxidant is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 3:5; the lubricant is a mixture of pentaerythritol stearate and ethylene bisstearamide in a mass ratio of 1:2.

[0061] A preparation method of the functional polyester yarn comprises the following steps:

[0062] Step S1, preparation of functional synthetic fiber: mixing polyester chips, functional copolymer, compatibilizer, antioxidant, and lubricant evenly to obtain a spinning raw material, adding the spinning raw material into a composite spinning machine for spinning, then through drawing processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, curing, water washing, and drying to obtain the functional synthetic fiber;

[0063] Step S2, proportioning the functional synthetic fiber and bamboo fiber by mass, and making the functional polyester yarn in a yarn mixing machine.

[0064] In step S1, the spinning temperature of the spinning is 278 °C, and the spinning winding speed is 1400 m / min; the drawing processing parameters in step S1 are a draw ratio of 4.2 times, a hot plate stretching temperature of 63 °C, and a hot plate stretching temperature of 132 °C; in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, the mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide is 1:18; the curing temperature is 78 °C and the time is 1.8 h.

[0065] Example 5

[0066] A functional polyester yarn is spun from functional synthetic fibers and bamboo fibers in a mass ratio of 5:0.5; the functional synthetic fibers are made from the following raw materials in parts by weight: 100 parts of polyester chips, 20 parts of functional copolymer, 3 parts of compatibilizer, 1.2 parts of antioxidant, 1.3 parts of lubricant, 4 parts of 1,4-diamino-2,3-dicyanoanthraquinone, and 3 parts of (3,6-diamino-9-acridinyl)boric acid; the functional copolymer includes the structural units introduced by the following monomers: diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione.

[0067] The fineness of the functional synthetic fiber is 2.0 D and the length is 50 mm, and the fineness of the bamboo fiber is 1.8 D and the length is 45 mm; the polyester chips are the special polyester chips 224 for industrial yarns produced by Sinopec.

[0068] The preparation method of the functional copolymer comprises the following steps: adding diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, and an initiator into a high-boiling solvent, stirring and reacting at 70 °C for 6 h under an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol 6 times, and finally drying in a vacuum drying oven at 95 °C to constant weight to obtain the functional copolymer; the mass ratio of diphenyl(4-vinylphenyl)phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazolium chloride, 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, the initiator, and the high-boiling solvent is 3:1:2:0.4:0.8:0.08:30; the initiator is azobisisobutyronitrile; the high-boiling solvent is dimethyl sulfoxide; the inert gas is nitrogen.

[0069] The compatibilizer is SMA-725, provided by Jiaxing Huawei Chemical Co., Ltd.; the antioxidant is antioxidant 168; the lubricant is pentaerythritol stearate.

[0070] A preparation method of the functional polyester yarn comprises the following steps:

[0071] Step S1, preparation of functional synthetic fiber: mixing polyester chips, the functional copolymer, the compatibilizer, the antioxidant, and the lubricant evenly to obtain a spinning raw material, adding the spinning raw material into a composite spinning machine for spinning, then through drawing processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, curing, water washing, and drying to obtain the functional synthetic fiber;

[0072] Step S2, proportioning the functional synthetic fiber and bamboo fiber by mass ratio, and making the functional polyester yarn in a yarn mixing machine.

[0073] In step S1, the spinning temperature of the spinning is 280 °C, and the spinning winding speed is 1500 m / min; the drawing processing parameters in step S1 are a draw ratio of 4.2 times, a hot plate stretching temperature of 65 °C, and a hot plate stretching temperature of 135 °C; in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, the mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide is 1:20; the curing temperature is 80 °C and the time is 2 h.

[0074] Comparative Example 1

[0075] A functional polyester yarn and its preparation method are basically the same as those in Example 1, except that an equal amount of 1,4-diamino-2,3-dicyanoanthraquinone is used instead of (3,6-diamino-9-acridinyl)boric acid, and 4-methyl-5-vinylthiazole is not added.

[0076] Comparative Example 2

[0077] A functional polyester yarn and its preparation method are basically the same as those in Example 1, except that an equal amount of (3,6-diamino-9-acridinyl)boric acid is used instead of 1,4-diamino-2,3-dicyanoanthraquinone, and 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone is not added.

[0078] Perform performance tests on the functional polyester yarn samples described in Examples 1-5 and Comparative Examples 1-2. The test results are shown in Table 1. The test methods are as follows:

[0079] (1) Flame retardancy: Test according to UL-94.

[0080] (2) Tensile strength at break: Refer to Method B of GB / T 3916-2013 for tensile strength at break test.

[0081] (3) UV resistance: Use a UV lamp with a wavelength of 350 nm to irradiate each functional polyester yarn sample for 48 h at room temperature, with the sample 10 cm away from the UV light source. The retention rate of the tensile strength at break is used to measure the UV resistance, and the larger the value, the better the UV resistance.

[0082] (4) Antibacterial property: Refer to the carrier micro-qualitative method in the textile industry standard FZ / T01021-1992 for the test method of antibacterial properties of fabrics to measure the antibacterial rate. The test strain used is Staphylococcus aureus.

[0083] Table 1

[0084] Test Items Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Flame Retardancy (Grade) V-0 V-0 V-0 V-0 V-0 V-1 V-1 Breaking Strength (cN) 700 705 712 715 721 683 679 UV Resistance (%) 99.59 99.72 99.87 99.92 99.98 98.93 99.06 Antibacterial Rate (%) 99.5 99.7 99.7 99.8 99.9 98.5 99.2

[0085] As can be seen from Table 1, the functional polyester yarn disclosed in the embodiments of the present invention has better flame retardancy, mechanical strength, ultraviolet resistance and antibacterial properties compared with the comparative examples; the combined use of 1,4-diamino-2,3-dicyanoanthraquinone, (3,6-diamino-9-acridinyl)boric acid, 4-methyl-5-vinylthiazole, and 3-(1,1-difluoro-2-propen-1-yl)-2(1H)-quinoxalinone is beneficial to improving the above properties.

[0086] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A functional polyester yarn, characterized in that: The functional synthetic fiber and the bamboo fiber are blended in a mass ratio of (3-5):0.5; the functional synthetic fiber comprises the following raw materials in parts by weight: 100 parts of polyester chips, 10-20 parts of functional copolymers, 1-3 parts of compatibilizers, 0.7-1.2 parts of antioxidants, 0.9-1.3 parts of lubricants, 2-4 parts of 1,4-diamino-2,3-dicyanoanthraquinone, 1-3 parts of (3,6-diamino-9-acridinyl)boric acid, parts; the functional copolymer includes structural units introduced by the following monomers: diphenyl (4-vinylphenyl) phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methylimidazole chloride, 3-(1,1-difluoro-2-propene-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione.

2. The functional polyester yarn according to claim 1, characterized in that: The functional synthetic fiber has a fineness of 1.0-2.0D and a length of 30-50mm, and the bamboo fiber has a fineness of 1.3-1.8D and a length of 35-45mm.

3. The functional polyester yarn according to claim 1, characterized in that: The polyester chips are polyester chips 224 for industrial yarn produced by Sinopec.

4. The functional polyester yarn according to claim 1, characterized in that: The preparation method of the functional copolymer comprises the following steps: adding diphenyl (4-vinylphenyl) phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methyl imidazole chloride, 3-(1,1-difluoro-2-propylene-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propylene)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours at 60-70°C in an inert gas atmosphere, then precipitating the polymer in water, washing the precipitated polymer with ethanol for 3-6 times, and finally drying the polymer in a vacuum drying oven at 85-95°C to a constant weight to obtain the functional copolymer.

5. The functional polyester yarn according to claim 4, characterized in that: The mass ratio of the diphenyl (4-vinylphenyl) phosphine oxide, 4-methyl-5-vinylthiazole, 1-allyl-3-methyl imidazole chloride, 3-(1,1-difluoro-2-propene-1-yl)-2(1H)-quinoxalinone, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, initiator and high boiling point solvent is (1-3):1:(1-2):0.4:(0.5-0.8):(0.04-0.08):(20-30).

6. The functional polyester yarn according to claim 4, characterized in that: The initiator is azobisisobutyronitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone; and the inert gas is any one of nitrogen, helium, neon, and argon.

7. The functional polyester yarn according to claim 1, characterized in that: The compatibilizer is SMA-725; the antioxidant is at least one of antioxidant 1010 and antioxidant 168; the lubricant is at least one of pentaerythritol stearate and ethylene bisstearamide.

8. A method for preparing the functional polyester yarn according to any one of claims 1 to 7, characterized in that: The steps include: Step S1, preparation of functional synthetic fiber: polyester chips, functional copolymers, compatibilizers, antioxidants and lubricants are uniformly mixed to obtain spinning raw materials, the spinning raw materials are added into a composite spinning machine for spinning, and then subjected to drafting processing, surface spraying with an N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid, curing, water washing and drying to obtain functional synthetic fibers; Step S2: mixing the functional synthetic fiber and the bamboo fiber according to the mass ratio to produce the functional polyester yarn in a yarn mixing machine.

9. The method for preparing the functional polyester yarn according to claim 8, characterized in that: The spinning temperature of the spinning in step S1 is 255-280°C, and the spinning winding speed is 800-1500m / min; the drawing processing parameters in step S1 are a drawing multiple of 3-5 times, a hot plate stretching temperature of 50-65°C, and a hot plate stretching temperature of 115-135°C.

10. The method for preparing the functional polyester yarn according to claim 8, characterized in that: The mass ratio of 1,4-diamino-2,3-dicyanoanthraquinone to N,N-dimethylformamide in the N,N-dimethylformamide solution containing 1,4-diamino-2,3-dicyanoanthraquinone and (3,6-diamino-9-acridinyl)boric acid is 1:(10-20); the curing temperature is 70-80°C and the curing time is 1-2h.