A method for preparing high-strength anti-aging polyester DTY filament and self-cleaning high-sun fastness outdoor fabric

Abstract

The invention discloses a method for preparing a high-strength anti-aging polyester DTY filament and a self-cleaning high-sun fastness outdoor fabric, belonging to the field of polyester fabrics. The invention adds an anti-aging agent during the spinning process, uses a partial drafting technology to prepare high-strength polyester DTY filaments, improves the anti-aging effect of the yarn, and then prepares a self-cleaning, high-strength, anti-aging polyester fabric by flat weaving and light media finishing. The method of the invention prepares a fabric with a self-cleaning function and successfully solves the problems of traditional polyester fabrics in outdoor use, poor sunlight fastness, easy aging, etc.

Description

Technical Field

[0001] The invention belongs to the field of polyester fabrics, and in particular relates to a preparation method of high-strength anti-aging polyester DTY filaments and self-cleaning and highly sun-resistant outdoor fabrics. Background Art

[0002] Outdoor fabrics mainly refer to textile fabrics used in outdoor places such as outdoor tents and yachts. In recent years, with the increase of people's outdoor activities, the market demand for such products has also been growing. More than 90% of outdoor products are made of polyester, but due to the nature of the polyester material itself, it will age and become brittle after two years of outdoor use, and it will be unusable, resulting in a great waste of resources. In addition, the strength of ordinary polyester filaments cannot meet the strength requirements of outdoor fabrics.

[0003] At present, the main route for preparing DTY filaments is to prepare DTY with pre-oriented yarn (POY). For example, Chinese patent document CN105463652A points out: the preparation method of regenerated DTY low-elastic network yarn, the regenerated PET melt is spun into regenerated POY raw yarn, and the regenerated POY raw yarn is made into regenerated DTY low-elastic network yarn by stretching. Chinese patent document CN115142282A points out that POY spinning is put into a texturing machine for stretching to make DTY spinning. And Chinese patent document CN113913000A points out: heating POY yarn, stretching and shaping the POY yarn, then cooling and fixing it through a cooling plate, then false twisting it through a false twister, and finally exporting it from an output roller, winding it to obtain DTY yarn, etc. Although the polyester DTY products obtained by the above methods have improved in a certain function, such as antibacterial, they still have the problems of easy aging and not durable.

[0004] At the same time, as an outdoor fabric, it needs to block a lot of ultraviolet radiation. If a certain amount of photomedia material is added, photocatalysis can be used to produce reactive oxygen species (ROS) to kill pathogens in the air and play a self-cleaning role. Nano titanium dioxide (TiO2) is the main component of new photocatalysts because of its low cost, high stability, low toxicity and good photocatalytic effect. This type of photocatalyst can use light energy to catalyze water and oxygen molecules to produce free radicals, destroying microbial cell components and exerting its effect. However, in actual use, TiO2 often faces the problem of loose bonding with the material matrix, causing shedding. Summary of the invention

[0005]

Technical issues

[0006] The problem of easy aging of polyester DTY is overcome and a self-cleaning function is imparted to the polyester DTY filament, providing a method for preparing a high-strength anti-aging polyester DTY filament and a self-cleaning and highly sun-resistant outdoor fabric.

[0007]

Technical solution

[0008] The present invention mainly aims at the characteristics of outdoor polyester products that are easy to age and not durable, and studies and improves the fabric from the processes of yarn processing, weaving and finishing, and gives it a self-cleaning function through photo-media finishing. Each process involved will have an impact on the final product.

[0009] The purpose of the present invention is to provide a method for preparing a self-cleaning and highly sun-resistant outdoor fabric, namely, adding an anti-aging agent during the spinning process, using partial drawing technology to prepare high-strength polyester DTY filaments, so that the yarn has a certain anti-aging effect, and the yarn is flatly woven, and light media and three-proof finishing are used to give the fabric a self-cleaning effect. This technology prepares a fabric with a self-cleaning function and successfully solves the problems of traditional polyester fabrics in outdoor use, poor sunlight fastness, and easy aging.

[0010] Technical solution of the present invention:

[0011] The present invention provides a method for preparing high-strength anti-aging DTY polyester filament, comprising the following steps:

[0012] (a) blending polyester chips and anti-aging masterbatch, and obtaining a melt through a screw extruder; spinning the obtained melt as a spinning solution, and performing partial drawing during the spinning process, with a reserved length of 20-25%, to obtain partially drawn FDY (fully drawn yarn);

[0013] (b) The partially drawn FDY is stretched and false-twisted to obtain high-strength and anti-aging DTY polyester filaments.

[0014] The present invention provides a high-strength and anti-aging DTY polyester filament based on the method.

[0015] The present invention also provides a method for preparing a self-cleaning high-sun-fast outdoor fabric, comprising the following steps:

[0016] (1) preparing high-strength and anti-aging DTY polyester filament according to the above process;

[0017] (2) performing bobbin dyeing on the obtained high-strength anti-aging DTY polyester filament, wherein the dye liquor contains 0.5-1g / L degreasing agent, 0.01-3wt% high light-fast dye, 0.5-1wt% dispersing leveling agent, 0.5-1wt% alkaline lignin, and 1g / L glacial acetic acid, and the temperature is gradually increased to 80-130° C., kept warm for a period of time, and discharged directly at high temperature, and then reduced and cleaned with 0.5-1g / L caustic soda and 0.5-1g / L hydrosulfite, and then neutralized with an acid solution and washed with water to obtain dyed polyester DTY filament;

[0018] (3) Fabric weaving: The weaving process adopts high warp density and high back beam, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength anti-aging DTY filament for weft yarn, 100# steel reed 4-through for warp density, and 13 back beam height for preparing polyester DTY filament fabric;

[0019] (4) Self-cleaning fabric finishing: prepare a finishing liquid with 5-10 parts of self-cleaning photocatalyst powder, 0.5-1 parts of amphoteric stabilizer, 50-80 parts of triple-proof finishing agent, 2-8 parts of resin, 0.5-2 parts of catalyst, 5-12 parts of fiber protective agent and 800-1200 parts of softened water; dip-roll the obtained polyester DTY filament fabric, and then dry it to obtain a self-cleaning high-sun-resistant outdoor fabric.

[0020] In one embodiment of the present invention, the preparation of partially drawn polyester filaments in step (a) specifically includes: ① selecting ordinary polyester chips with a characteristic viscosity of 0.6-0.70, and placing the polyester chips and anti-aging masterbatch in a drying tower for drying; ② adding 2wt%-3wt% of anti-aging masterbatch to the dried polyester chips, mixing and feeding them into a screw extruder, and preparing the polyester chips into a melt by heating outside the barrel, friction between the material and the barrel, the screw and the shear force of the melt. ③ The melt is pressed out of the spinneret hole by a metering pump, and the melt is sprayed into the cold air in a thin stream, condensed by the cold air and solidified into filaments. Partial drawing is performed during the spinning process, and the reserved length is 20-25% to prepare partially drawn FDY (fully drawn yarn).

[0021] In one embodiment of the present invention, the anti-aging masterbatch mainly comprises a hindered amine light stabilizer (HALS), a mixture of a nickel-containing quencher and a benzotriazole ultraviolet absorber, and the carrier is polybutylene terephthalate (PBT).

[0022] In one embodiment of the present invention, the preparation of anti-aging high-strength DTY polyester filament in step (b) specifically includes: stretching and false twisting the FDY filament by using false twist deformation through the reserved drafting length of FDY. The deformation is mainly carried out in the first heater, and the temperature is 160-170°C. If the deformation temperature is low, the effect is poor and the elasticity is poor. If the temperature is too high, the DTY will stick. The second heater is mainly used for heat setting, and the temperature is 170-180°C. The temperature should not be too high, otherwise its strength and elasticity will be lost or even disappear completely. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of the polyester filament raw material is strictly controlled at 1:1.1, the D / Y ratio during false twist treatment is 2:2.1, the network pressure of the net nozzle is 1.4-1.6kg, and the spinning produces 300D / 96f polyester DTY yarn.

[0023] In one embodiment of the present invention, in step (2), the process of dyeing the bobbin yarn is as follows: the warp bobbin weight is 800g±10g, the weft bobbin weight is 1000g±10g, and the density is controlled at 0.4-0.42g / cm 3 .

[0024] In one embodiment of the present invention, in step (2), the gradient temperature increase process includes increasing the temperature from room temperature (20-30°C) to 80°C at 2°C / min, then increasing the temperature to 110°C at 1°C / min, and then increasing the temperature to 130°C at 2°C / min.

[0025] In one embodiment of the present invention, the reduction cleaning in step (2) is performed at 80° C. for 15 minutes.

[0026] In one embodiment of the present invention, the acid solution in step (2) can specifically be acetic acid.

[0027] In one embodiment of the present invention, the self-cleaning photocatalyst powder in step (4) may be 3-5 nm titanium dioxide particles.

[0028] In one embodiment of the present invention, the amphoteric stabilizer in step (4) may be WD.

[0029] In one embodiment of the present invention, the triple-proofing finishing agent in step (4) may be TF-5862A.

[0030] In one embodiment of the present invention, the resin in step (4) may be TF-632.

[0031] In one embodiment of the present invention, the catalyst in step (4) may be TF-630.

[0032] In one embodiment of the present invention, the fiber protecting agent in step (4) may be HP.

[0033] In one embodiment of the present invention, in step (4), after the fabric is impregnated, the drying conditions are a temperature of 160-180° C. and a treatment time of 90-130 seconds. The high temperature helps the additive to fully cross-link and fully combine with the polyester fiber to prepare a high-strength, anti-aging polyester fabric for outdoor use.

[0034] In one embodiment of the present invention, in step (4), the photocatalyst powder has a self-cleaning effect under ultraviolet irradiation, and the addition of the amphoteric stabilizer ensures the stability of the finishing liquid system; the triple-proof finishing agent can reduce the impact of rain on the fabric, reduce the shedding of the photocatalyst powder, and at the same time, reduce the degree of aging of the fabric during outdoor use; the addition of the resin can have a bonding effect on the photocatalyst powder and give the fabric better elasticity, and the addition of the fiber protective agent makes the fabric have better strength.

[0035] The present invention provides a highly sun-resistant outdoor fabric based on the method.

[0036] The outdoor fabric of the self-cleaning high-strength anti-aging DTY polyester filament provided by the invention is widely used in outdoor tents and yachts.

[0037] Beneficial effects of the present invention:

[0038] (1) Ordinary polyester chips are used to make high-strength and anti-aging polyester filaments, which are low in cost. The outdoor fabrics produced have high initial strength and good anti-aging effect.

[0039] (2) Using a photo-media finishing method, photo-media powder is applied to polyester DTY filament fabric, which generates active oxygen under the irradiation of ultraviolet rays, achieving a self-cleaning effect.

[0040] (3) The method of the present invention has simple process equipment and strong repeatability, and is very suitable for large-scale enterprise production. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a structural analysis diagram of the self-cleaning and highly sun-resistant outdoor fabric of the present invention, wherein 1 is the polyester fabric base cloth; 2 is the triple-proof finishing layer; 3 is the photo-media finishing; and 4 is the self-cleaning principle. DETAILED DESCRIPTION

[0042] The anti-aging masterbatch involved in the present invention refers to:

[0043] A mixture of hindered amine light stabilizer (HALS) [poly (6-[(1,1,3,3-tetramethylbutyl) amino-S-triazine-2,4-diyl]-[2,2,6,6-tetramethyl-4-piperidinyl] imino)-1,6-hexanediyl-[(2,2,6,6-tetramethyl-4-piperidinyl] imino)], a nickel-containing quencher [nickel bis (3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester)] and a benzotriazole ultraviolet absorber [2-(2'hydroxy'5-methylphenyl)benzotriazole] is stirred and mixed in a ratio of 7:1:2, and a carrier is polybutylene terephthalate PBT, which is added in an amount of 10%, and is melt-blended and granulated by a twin-screw extruder to form an anti-aging masterbatch.

[0044] Embodiment 1:

[0045] (1) Preparation of partially drawn polyester filaments: Ordinary polyester (polyethylene terephthalate) chips with a characteristic viscosity of 0.6 are selected, and 2 wt% of anti-aging masterbatch is added to the dried polyester chips, and the mixture is fed into a screw extruder to prepare a melt, which is used as a spinning solution. After adding the anti-aging masterbatch for blending, the polyester spinning solution becomes thinner and the fluidity of the spinning solution becomes stronger. The spinning solution is spun at a temperature of 288°C, and the melt is pressed out of the spinneret hole by a metering pump, and the reserved length is 20%, to prepare partially drawn FDY filaments.

[0046] (2) Preparation of anti-aging high-strength DTY polyester filament: The partially drawn FDY filament obtained in step (1) is stretched and false-twisted by false-twisting. Heat deformation is performed at a temperature of 160°C, and then heat setting is performed at a temperature of 170°C. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of the polyester filament raw material is strictly controlled at 1:1.1, the D / Y ratio during false twisting is 2:2.1, and the network pressure of the net nozzle is 1.4kg. The spinning produces 300D / 96f polyester DTY filament.

[0047] (3) Dyeing of polyester DTY filament tube yarn: warp tube weight 800g±10g, weft tube weight 1000g±10g, density controlled at 0.4g / cm 3 At 25°C, 0.5 g / L of degreasing agent (TF-101B, Zhejiang Chuanhua Chemical Group), 1 wt% of high light-fast dye (Disperse yellow brown WECT 200%, Zhejiang Longsheng Group Co., Ltd.), 1 wt% of dispersing leveling agent (TF-212B, Zhejiang Chuanhua Chemical Group), 0.5 wt% of alkaline lignin, and 1 g / L of glacial acetic acid were added to the dyeing vat, and the temperature was raised to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, kept warm for 20 min, discharged directly at high temperature, and then reduced and cleaned with 0.5 g / L caustic soda and 1 g / L hydrosulfite, treated at 80°C for 15 minutes, neutralized with acetic acid, and washed with water.

[0048] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0049] (5) Self-cleaning fabric finishing: 5 parts of self-cleaning photocatalyst powder (3-5nm TiO2, Ningbo Jiwei Nano New Material Technology Co., Ltd.), 0.5 parts of amphoteric stabilizer (WD, Guangzhou Lianzhuang Technology Co., Ltd.), 50 parts of three-proof finishing agent (TF-5862A, Zhejiang Chuanhua Chemical Group), resin 2 (TF-632, Zhejiang Chuanhua Chemical Group), 0.5 parts of catalyst (TF-630, Zhejiang Chuanhua Chemical Group), 5 parts of fiber protective agent (HP, Nantong Gaokai Chemical Co., Ltd.) were added to 1000 parts of softened water and stirred for 15 minutes to obtain a finishing solution. The polyester DTY filament fabric obtained in step (4) was dipped in the finishing solution and then dried. The drying conditions were a temperature of 160°C and a treatment time of 130 seconds to obtain a highly sun-resistant outdoor fabric.

[0050] Embodiment 2:

[0051] (1) Preparation of partially drawn polyester filament: Ordinary polyester chips with an intrinsic viscosity of 0.6 were selected, and 3wt% anti-aging masterbatch was added to the dried polyester chips, and the mixture was fed into a screw extruder to prepare a melt. After adding the anti-aging masterbatch for blending, the polyester spinning solution became thinner and the fluidity of the spinning solution became stronger. The spinning solution was spun at a temperature of 288°C, and the melt was pressed out of the spinneret hole by a metering pump, and the reserved length was 23%, to prepare partially drawn FDY.

[0052] (2) Preparation of high-strength and anti-aging DTY polyester filament: False twist deformation is used to stretch and false twist the partially drawn FDY filament. Heat deformation is performed at a temperature of 170°C, and then heat setting is performed at a temperature of 180°C. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of polyester filament raw materials is strictly controlled at 1:1.1, the D / Y ratio during false twist treatment is 2:2.1, and the network pressure of the net nozzle is 1.4kg. The spinning produces 300D / 96f polyester DTY yarn.

[0053] (3) DTY polyester filament tube dyeing: warp tube weight 800g ± 10g, weft tube weight 1000g ± 10g, density controlled at 0.4g / cm 3 At 25°C, 0.5 g / L of degreasing agent (TF-101B, Zhejiang Chuanhua Chemical Group), 1 wt% of high light-fast dye (Disperse yellow brown WECT 200%, Zhejiang Longsheng Group Co., Ltd.), 1 wt% of dispersing leveling agent (TF-212B, Zhejiang Chuanhua Chemical Group), 0.5 wt% of alkaline lignin, and 1 g / L of glacial acetic acid were added to the dyeing vat, and the temperature was raised to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, kept warm for 20 min, discharged directly at high temperature, and then reduced and cleaned with 0.5 g / L caustic soda and 1 g / L hydrosulfite, treated at 80°C for 15 minutes, neutralized with acetic acid, and washed with water.

[0054] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength anti-aging DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0055] (5) Self-cleaning fabric finishing: 5 parts of self-cleaning photocatalyst powder (3-5nm TiO2, Ningbo Jiwei Nano New Material Technology Co., Ltd.), 0.5 parts of amphoteric stabilizer (WD, Guangzhou Lianzhuang Technology Co., Ltd.), 50 parts of three-proof finishing agent (TF-5862A, Zhejiang Chuanhua Chemical Group), resin 2 (TF-632, Zhejiang Chuanhua Chemical Group), 0.5 parts of catalyst (TF-630, Zhejiang Chuanhua Chemical Group), 5 parts of fiber protective agent (HP, Nantong Gaokai Chemical Co., Ltd.) were added to 1000 parts of softened water and stirred for 15 minutes. After the fabric was padded, the drying condition was 160°C for 130 seconds.

[0056] Embodiment 3:

[0057] (1) Preparation of partially drawn polyester filament: Ordinary polyester chips with an intrinsic viscosity of 0.6 were selected, and 3wt% anti-aging masterbatch was added to the dried polyester chips, and the mixture was fed into a screw extruder to prepare a melt. After adding the anti-aging masterbatch for blending, the polyester spinning solution became thinner and the fluidity of the spinning solution became stronger. The spinning solution was spun at a temperature of 288°C, and the melt was squeezed out of the spinneret hole by a metering pump, and the reserved length was 25%, to prepare partially drawn FDY.

[0058] (2) Preparation of high-strength and anti-aging DTY polyester filament: False twist deformation is used to stretch and false twist the partially drawn FDY filament. Heat deformation is performed at a temperature of 170°C, and then heat setting is performed at a temperature of 180°C. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of polyester filament raw materials is strictly controlled at 1:1.1, the D / Y ratio during false twist treatment is 2:2.1, and the network pressure of the net nozzle is 1.4kg. The spinning produces 300D / 96f polyester DTY yarn.

[0059] (3) DTY polyester filament tube dyeing: warp tube weight 800g ± 10g, weft tube weight 1000g ± 10g, density controlled at 0.4g / cm 3At 25°C, 0.5 g / L of degreasing agent (TF-101B, Zhejiang Chuanhua Chemical Group), 1 wt% of high light-fast dye (Disperse yellow brown WECT 200%, Zhejiang Longsheng Group Co., Ltd.), 1 wt% of dispersing leveling agent (TF-212B, Zhejiang Chuanhua Chemical Group), 0.5 wt% of alkaline lignin, and 1 g / L of glacial acetic acid were added to the dyeing vat, and the temperature was raised to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, and kept warm for 35 min, discharged directly at high temperature, and then reduced and cleaned with 0.5 g / L caustic soda and 1 g / L hydrosulfite, treated at 80°C for 15 minutes, neutralized with acetic acid, and washed with water.

[0060] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength anti-aging DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0061] (5) Self-cleaning fabric finishing: 10 parts of self-cleaning photocatalyst powder (3-5nm TiO2, Ningbo Jiwei Nano New Material Technology Co., Ltd.), 1 part of amphoteric stabilizer (WD, Guangzhou Lianzhuang Technology Co., Ltd.), 80 parts of three-proof finishing agent (TF-5862A, Zhejiang Chuanhua Chemical Group), 8 parts of resin (TF-632, Zhejiang Chuanhua Chemical Group), 2 parts of catalyst (TF-630, Zhejiang Chuanhua Chemical Group), 5 parts of fiber protective agent (HP, Nantong Gaokai Chemical Co., Ltd.) were added to 1000 parts of softened water and stirred for 15 minutes. After the fabric was padded, the drying condition was 170°C for 110 seconds.

[0062] Embodiment 4:

[0063] (1) Preparation of partially drawn polyester filament: Ordinary polyester chips with an intrinsic viscosity of 0.7 were selected, and 3 wt% anti-aging masterbatch was added to the dried polyester chips, and the mixture was fed into a screw extruder to prepare a melt. After adding the anti-aging masterbatch for blending, the polyester spinning solution became thinner and the fluidity of the spinning solution became stronger. The spinning solution was spun at a temperature of 289°C, and the melt was pressed out of the spinneret hole by a metering pump, and the reserved length was 25%, to prepare partially drawn FDY.

[0064] (2) Preparation of high-strength and anti-aging DTY polyester filament: False twist deformation is used to stretch and false twist the partially drawn FDY filament. Heat deformation is performed at a temperature of 170°C, and then heat setting is performed at a temperature of 180°C. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of the polyester filament raw material is strictly controlled at 1:1.1, the D / Y ratio during false twist treatment is 2:2.1, and the network pressure of the net nozzle is 1.6kg. The spinning produces 300D / 96f polyester DTY yarn.

[0065] (3) DTY polyester filament tube dyeing: warp tube weight 800g ± 10g, weft tube weight 1000g ± 10g, density controlled at 0.4g / cm 3 At 25°C, 0.5 g / L of degreasing agent (TF-101B, Zhejiang Chuanhua Chemical Group), 1 wt% of high light-fast dye (Disperse yellow brown WECT 200%, Zhejiang Longsheng Group Co., Ltd.), 1 wt% of dispersing leveling agent (TF-212B, Zhejiang Chuanhua Chemical Group), 0.5 wt% of alkaline lignin, and 1 g / L of glacial acetic acid were added to the dyeing vat, and the temperature was raised to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, kept warm for 50 min, discharged directly at high temperature, and then reduced and cleaned with 0.5 g / L caustic soda and 1 g / L hydrosulfite, treated at 80°C for 15 minutes, neutralized with acetic acid, and washed with water.

[0066] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength anti-aging DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0067] (5) Self-cleaning fabric finishing: 10 parts of self-cleaning photocatalyst powder (3-5nm TiO2, Ningbo Jiwei Nano New Material Technology Co., Ltd.), 1 part of amphoteric stabilizer (WD, Guangzhou Lianzhuang Technology Co., Ltd.), 80 parts of three-proof finishing agent (TF-5862A, Zhejiang Chuanhua Chemical Group), 8 parts of resin (TF-632, Zhejiang Chuanhua Chemical Group), 2 parts of catalyst (TF-630, Zhejiang Chuanhua Chemical Group), and 12 parts of fiber protective agent (HP, Nantong Gaokai Chemical Co., Ltd.) were added to 1000 parts of softened water and stirred for 15 minutes. After the fabric was padded, the drying condition was 170°C for 110 seconds.

[0068] Comparative Example 1:

[0069] The difference between Comparative Example 1 and Example 4 is that no anti-aging masterbatch is added in step (1).

[0070] (1) Preparation of anti-aging high-strength partially drawn polyester filament: Ordinary polyester chips with an intrinsic viscosity of 0.7 are selected and fed into a screw extruder to prepare a melt. The fluidity of the spinning solution becomes stronger. The spinning solution is spun at a temperature of 289°C, and the melt is pressed out of the spinneret hole by a metering pump, with a reserved length of 25%, to prepare partially drawn FDY.

[0071] (2) Preparation of DTY polyester filament: FDY with a reserved draft length is stretched and false-twisted by false twisting. Heat deformation is performed at a temperature of 170°C, and then heat setting is performed at a temperature of 180°C. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of polyester filament raw materials is strictly controlled at 1:1.1, the D / Y ratio during false twisting is 2:2.1, and the network pressure of the net nozzle is 1.6kg. 300D / 96f polyester DTY yarn is obtained by spinning.

[0072] (3) DTY polyester filament tube dyeing: warp tube weight 800g ± 10g, weft tube weight 1000g ± 10g, density controlled at 0.4g / cm 3 At 25°C, add 0.5g / L degreasing agent, 3wt% high fast dye, 1wt% dispersing leveling agent, 0.5wt% alkaline lignin and 1g / L glacial acetic acid into the dye vat, heat to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, keep warm for 50min, discharge directly at high temperature, then use 0.5g / L caustic soda and 1g / L insurance powder for reduction cleaning, treat at 80°C for 15 minutes, then neutralize with acetic acid and wash with water.

[0073] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0074] (5) Self-cleaning fabric finishing: 10 parts of self-cleaning photocatalyst powder (3-5nm TiO2, Ningbo Jiwei Nano New Material Technology Co., Ltd.), 1 part of amphoteric stabilizer (WD, Guangzhou Lianzhuang Technology Co., Ltd.), 80 parts of three-proof finishing agent (TF-5862A, Zhejiang Chuanhua Chemical Group), 8 parts of resin (TF-632, Zhejiang Chuanhua Chemical Group), 2 parts of catalyst (TF-630, Zhejiang Chuanhua Chemical Group), and 12 parts of fiber protective agent (HP, Nantong Gaokai Chemical Co., Ltd.) were added to 1000 parts of softened water and stirred for 15 minutes. After the fabric was padded, the drying condition was 170°C for 110 seconds.

[0075] Comparative Example 2:

[0076] The difference between Comparative Example 2 and Example 4 is that the finishing process of the last step (5) is omitted.

[0077] (1) Preparation of anti-aging high-strength partially drawn polyester filament: Ordinary polyester chips with a characteristic viscosity of 0.7 are selected, and 3wt% anti-aging masterbatch is added to the dried polyester chips, and the mixture is fed into a screw extruder to prepare a melt. After adding the anti-aging masterbatch for blending, the polyester spinning solution becomes thinner and the fluidity of the spinning solution becomes stronger. The spinning solution is spun at a temperature of 289°C, and the melt is pressed out of the spinneret hole by a metering pump, and the reserved length is 25% to prepare partially drawn FDY.

[0078] (2) Preparation of DTY polyester filament: FDY with a reserved draft length is stretched and false-twisted by false twisting. Heat deformation is performed at a temperature of 170°C, and then heat setting is performed at a temperature of 180°C. The physical properties of FDY have a great influence on the production of DTY. The stretching ratio of polyester filament raw materials is strictly controlled at 1:1.1, the D / Y ratio during false twisting is 2:2.1, and the network pressure of the net nozzle is 1.6kg. 300D / 96f polyester DTY yarn is obtained by spinning.

[0079] (3) DTY polyester filament tube dyeing: warp tube weight 800g ± 10g, weft tube weight 1000g ± 10g, density controlled at 0.4g / cm 3 At 25°C, add 0.5g / L degreasing agent, 3wt% high fast dye, 1wt% dispersing leveling agent, 0.5wt% alkaline lignin and 1g / L glacial acetic acid into the dye vat, heat to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, keep warm for 50min, discharge directly at high temperature, then use 0.5g / L caustic soda and 1g / L insurance powder for reduction cleaning, treat at 80°C for 15 minutes, then neutralize with acetic acid and wash with water.

[0080] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0081] Comparative Example 3

[0082] Compared with Example 1, POY was used to prepare DTY filaments (refer to the prior art CN113913000A), and then the fabric product was prepared according to the same method.

[0083] (1) Ordinary polyester polyester (polyethylene terephthalate PET) chips with an intrinsic viscosity of 0.6 are selected, and the dried polyester chips are added with 2wt% anti-aging masterbatch mixed with antibacterial masterbatch, and the mixture is fed into a screw extruder to prepare a melt, which is used as a spinning solution. Then, after the upper bundling, oiling, stretching and drying processes of the spinning device, the temperature of the spinning device is 260°C, the spinning speed is 2900m / min, the initial pressure of the spinning device is 120MPa, and the oiling rate is 0.7%, POY yarn is obtained.

[0084] (2) DTY stretching: The POY yarn is heated to 185°C, and then stretched and fixed at a stretching ratio of 1.55. The POY yarn is then cooled and fixed on a cooling plate, and then false-twisted by a false twister at a false twisting speed of 580 m / min and a false twister speed ratio of 1.51. Finally, the yarn is oiled from the output roller at an oiling rate of 3%, and the polyester DTY yarn is wound.

[0085] (3) Dyeing of polyester DTY filament tube yarn: warp tube weight 800g±10g, weft tube weight 1000g±10g, density controlled at 0.4g / cm 3 At 25°C, 0.5 g / L of degreasing agent (TF-101B, Zhejiang Chuanhua Chemical Group), 1 wt% of high light-fast dye (Disperse yellow brown WECT 200%, Zhejiang Longsheng Group Co., Ltd.), 1 wt% of dispersing leveling agent (TF-212B, Zhejiang Chuanhua Chemical Group), 0.5 wt% of alkaline lignin, and 1 g / L of glacial acetic acid were added to the dyeing vat, and the temperature was raised to 80°C at 2°C / min, then to 110°C at 1°C / min, and then to 130°C at 2°C / min, kept warm for 20 min, discharged directly at high temperature, and then reduced and cleaned with 0.5 g / L caustic soda and 1 g / L hydrosulfite, treated at 80°C for 15 minutes, neutralized with acetic acid, and washed with water.

[0086] (4) Fabric weaving: The weaving process adopts high warp density and high back beam weaving technology, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength DTY filament for weft yarn, 100# steel reed 4-through for warp density, and back beam height of 13 to prepare polyester DTY filament fabric.

[0087] (5) Self-cleaning fabric finishing: 5 parts of self-cleaning photocatalyst powder (3-5nm TiO2, Ningbo Jiwei Nano New Material Technology Co., Ltd.), 0.5 parts of amphoteric stabilizer (WD, Guangzhou Lianzhuang Technology Co., Ltd.), 50 parts of three-proof finishing agent (TF-5862A, Zhejiang Chuanhua Chemical Group), resin 2 (TF-632, Zhejiang Chuanhua Chemical Group), 0.5 parts of catalyst (TF-630, Zhejiang Chuanhua Chemical Group), 5 parts of fiber protective agent (HP, Nantong Gaokai Chemical Co., Ltd.) were added to 1000 parts of softened water and stirred for 15 minutes to obtain a finishing solution. The polyester DTY filament fabric obtained in step (4) was dipped in the finishing solution and then dried. The drying conditions were a temperature of 160°C and a treatment time of 130 seconds to obtain a highly sun-resistant outdoor fabric.

[0088] Using AATCC186 textile weather resistance test, the polyester DTY fabrics prepared in Examples 1-4 and Comparative Examples 1-3 were irradiated under ultraviolet light for 1000 hours, and the changes in breaking strength and elongation were recorded. The results are shown in Table 1.

[0089] Table 1

[0090]

[0091]

[0092] From the comparison of the test data of the embodiment and comparative example 1 in Table 1, it can be found that the addition of the anti-aging masterbatch has a slight decrease in the initial breaking strength and initial breaking elongation of the fabric, but can greatly improve the breaking strength reduction rate and breaking elongation reduction rate of the polyester cloth, greatly reducing the aging degree of the fabric. The use of the three-proof finishing process and the addition of the fiber protective agent can improve the initial strength to a certain extent, and greatly reduce the aging of the fabric. At the same time, the fabric prepared by using the DTY filament obtained by using FDY has a stronger initial breaking strength than the POY filament reported previously, and still has a relatively high strength after ultraviolet irradiation.

[0093] The test was conducted according to GB / T30706-2014. Staphylococcus aureus was selected as the sample bacteria. The polyester fabrics prepared in Examples 1-4 and Comparative Examples 1-2 were treated under light conditions and dark conditions, respectively, and the antibacterial rates were statistically analyzed. The results are shown in Table 2.

[0094] Table 2

[0095] plan Inhibition rate under dark conditions (%) Antibacterial rate under light conditions (%) Example 1 60.2 94.2 Example 2 58.9 94.2 Example 3 65.2 98.6 Example 4 66.2 97.3 Comparative Example 2 20.2 25.1

[0096] From the comparison between the examples and the comparative examples in Table 2, it can be found that the last finishing process has a significant effect on the antibacterial effect of the obtained fabric, and the fabric obtained in the example has excellent antibacterial effect and good self-cleaning effect. In addition, the antibacterial effect of nano-titanium dioxide under a certain amount is relatively limited, but under the irradiation of ultraviolet light, the antibacterial effect has a significant increase, and has a good self-cleaning effect.

[0097] The embodiments provided above are not intended to limit the scope of the present invention, and the steps described are not intended to limit the execution order thereof. Those skilled in the art may make obvious improvements to the present invention in combination with existing common knowledge, which also fall within the scope of protection defined by the claims of the present invention.

Claims

1. A method for preparing a self-cleaning, highly sun-fast outdoor fabric, characterized in that: The steps include: (1) Preparation of high-strength and anti-aging DTY polyester filament: The polyester chips and the anti-aging masterbatch are blended and a melt is obtained by a screw extruder; the obtained melt is used as a spinning solution for spinning, and a partial drawing is performed during the spinning process, and a reserved length is 20-25% to obtain a partially drawn FDY; the obtained partially drawn FDY is stretched and false-twisted to obtain a high-strength anti-aging DTY polyester filament; (2) performing bobbin dyeing on the obtained high-strength anti-aging DTY polyester filament, wherein the dye liquor contains 0.5-1g / L degreasing agent, 0.01-3wt% high light-fast dye, 0.5-1wt% dispersing leveling agent, 0.5-1wt% alkaline lignin, and 1g / L glacial acetic acid, and the temperature is gradually increased to 80-130° C., kept warm for a period of time, and discharged directly at high temperature, and then reduced and cleaned with 0.5-1g / L caustic soda and 0.5-1g / L hydrosulfite, and then neutralized with an acid solution and washed with water to obtain dyed polyester DTY filament; (3) Fabric weaving: The weaving process adopts high warp density and high back beam, plain weave, false twisted 300D / 96f high-strength anti-aging polyester DTY filament for warp yarn, light mesh 300D / 96f high-strength anti-aging DTY filament for weft yarn, 100# steel reed 4-through for warp density, and 13 back beam height for preparing polyester DTY filament fabric; (4) Self-cleaning fabric finishing: prepare a finishing liquid with 5-10 parts of self-cleaning photocatalyst powder, 0.5-1 parts of amphoteric stabilizer, 50-80 parts of triple-proof finishing agent, 2-8 parts of resin, 0.5-2 parts of catalyst, 5-12 parts of fiber protective agent and 800-1200 parts of softened water; dip-roll the obtained polyester DTY filament fabric, and then dry it to obtain a self-cleaning high-sun-resistant outdoor fabric.

2. The method according to claim 1, characterized in that In step (1), the anti-aging masterbatch is mainly composed of a hindered amine light stabilizer, a nickel-containing quencher and a mixture of a benzotriazole ultraviolet absorber, and the carrier is polybutylene terephthalate.

3. The method according to claim 1, characterized in that In step (2), the process of yarn dyeing: the warp yarn weight is 800g±10g, the weft yarn weight is 1000g±10g, and the density is controlled at 0.4-0.42g / cm 3 .

4. The method according to claim 1, characterized in that In step (2), the gradient temperature increase process includes increasing the temperature from room temperature (20-30°C) to 80°C at 2°C / min, then increasing the temperature to 110°C at 1°C / min, and then increasing the temperature to 130°C at 2°C / min.

5. The method according to claim 1, characterized in that: In step (2), the reduction cleaning is carried out at 80° C. for 15 minutes; the acid solution is specifically acetic acid.

6. The method according to claim 1, characterized in that In step (4), the self-cleaning photocatalyst powder is 3-5 nm titanium dioxide particles, the amphoteric stabilizer is WD, the three-proof finishing agent is TF-5862A, the resin is TF-632, the catalyst is TF-630, and the fiber protective agent is HP.

7. The method according to claim 1, characterized in that In step (4), after the fabric is rolled, the drying conditions are a temperature of 160-180° C. and a treatment time of 90-130 seconds.

8. A self-cleaning, highly sun-resistant outdoor fabric prepared by the method according to any one of claims 1 to 7.

9. A high-strength anti-aging DTY polyester filament, characterized in that: The preparation method includes the following steps: (a) blending polyester chips and anti-aging masterbatch, and obtaining a melt through a screw extruder; spinning the obtained melt as a spinning solution, performing partial drawing during the spinning process, and retaining a length of 20-25%, to obtain partially drawn FDY; (b) The partially drawn FDY is stretched and false-twisted to obtain high-strength and anti-aging DTY polyester filaments.

10. Use of the self-cleaning, highly sun-resistant outdoor fabric according to claim 8 or the high-strength, anti-aging DTY polyester filament according to claim 9 in outdoor tents and yachts.

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