A tensile mesh and its preparation method

Abstract

The invention discloses a tensile mesh and a preparation method thereof, and relates to the field of textile technology. When preparing the tensile mesh, the present invention first modifies 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid mesoporous silica microspheres to prepare modified mesoporous silica microspheres; then, the modified mesoporous silica microspheres and polyethylene terephthalate are mixed and spun under an ammonia atmosphere to prepare modified PET fibers; then, nylon and allyl polyethylene glycol are mixed and spun to prepare composite nylon fibers; finally, after weaving the modified PET fibers as warps and the composite nylon fibers as wefts, hot rolling is performed to prepare the tensile mesh; the tensile mesh prepared by the present invention has strong waterproofness, tensile strength, and antibacterial properties.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a tensile-resistant mesh yarn and a preparation method thereof. Background Art

[0002] Acoustic mesh refers to a textile used on sound inlet and outlet devices for dust prevention, covering, and regulating air flow speed.

[0003] Currently, all consumer electronic products with acoustic functions often use precision-woven acoustic meshes at the sound outlet, such as microphones, speakers, and receivers, to protect the speakers and microphones. During use, foreign pollutants such as dust, metal dust, water, oil, and cosmetics can easily adhere to the acoustic mesh, easily breeding bacteria, and greatly affecting the performance and lifespan of the acoustic mesh. At the same time, technicians found that the wear resistance of precision-woven acoustic meshes was weak. Therefore, technicians improved the waterproof and wear-resistant problems by adding nanoparticles to PET fibers and weaving them with nylon as warp and weft respectively. This also caused the tensile properties of the acoustic mesh to drop sharply. Therefore, the preparation of mesh with good waterproof, antibacterial, wear-resistant, and tensile properties has become a technical problem that needs to be solved urgently in the current technical field. Summary of the Invention

[0004] The purpose of the present invention is to provide a tensile mesh and a preparation method thereof to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The invention discloses a tensile mesh yarn, which is prepared by weaving modified PET fibers as warps and composite nylon fibers as wefts and then performing hot rolling.

[0007] Furthermore, the modified PET fiber is obtained by mixing and spinning modified mesoporous silica microspheres and polyethylene terephthalate in an ammonia atmosphere.

[0008] Furthermore, the modified mesoporous silica microspheres are prepared from 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid modified mesoporous silica microspheres.

[0009] Furthermore, the composite nylon fiber is prepared by mixing nylon and allyl polyethylene glycol and spinning them together.

[0010] Furthermore, a method for preparing a tensile mesh mainly includes the following preparation steps:

[0011] (1) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.2:3 to 1:0.4:5, ultrasonicated at 30-40 kHz for 20-40 min, and then heated at 2-4 m 3 / min, introducing ammonia gas 0.5-0.7 times the mass of polyethylene terephthalate, pressurizing to 2-3 MPa, heating to 88-98°C, continuing ultrasonication for 20-40 min, stirring at 400-600 r / min for 47-49 h, rotary steaming at 2000-2400 r / min at 88-108°C and 10-20 Pa for 1-3 h, placing in a spinning box at 300-310°C, using a screw extruder for spinning at a spinning speed of 3800-4200 m / min, and side-blowing cooling and curing for 25-35 min at 10-20°C, humidity of 60-80% and wind speed of 0.9-1.3 m / s to prepare a modified PET fiber of 6-10 tex;

[0012] (2) At 120-130°C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:3-1:5, stirred at 400-600 r / min for 12-14 h, pressurized to 396-398 kPa, and heated at 0.25-0.55 m 3 / h, introducing 0.4 to 0.6 times the mass of nylon hydrogen, continuing stirring for 24 to 26 hours, cooling naturally to room temperature, placing in a spinning box at 265 to 270°C, spinning using a screw extruder at a spinning speed of 3800 to 4200 m / min, and side-blowing cooling and curing for 25 to 35 minutes at 10 to 20°C, a humidity of 60 to 80%, and a wind speed of 0.9 to 1.3 m / s to prepare a composite nylon fiber of 6 to 10 tex;

[0013] (3) Using modified PET fiber as warp and composite nylon fiber as weft, the warp and weft are woven at a mass ratio of 1:0.8 to 1:1.2, rolled 2 to 3 times at a rolling speed of 123 to 260 m / min, a roller distance of 1.4 to 2.9 mm, a pressure of 0.25 to 0.35 MPa and 120 to 140°C, cooled to 63 to 65°C, immersed in 0.4 to 0.6 times the mass of modified PET fiber diisopropyl peroxide dicarbonate for 1 to 3 minutes, fished out, and continued to roll 2 to 3 times. The yarn was washed with anhydrous ethanol and deionized water for 2 to 4 times in turn, and dried in an oven at 40 to 50°C for 2 to 4 hours to prepare a 100 to 200 mesh tensile mesh.

[0014] Furthermore, the preparation method of the modified mesoporous silica microspheres in step (1) is as follows: at room temperature and under argon protection, the mesoporous silica microspheres and a hydrochloric acid solution with a mass fraction of 10-20% are mixed in a mass ratio of 1:3-1:5, stirred at 400-600 r / min for 30-50 min, filtered, washed with deionized water to a pH of 6.8-7.2, dried at 40-60° C. for 1-3 h, and then immersed in the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid are added dropwise at a mass ratio of 1:0.6 to 1:0.8 to chloroform (2 to 4 times the mass of the microspheres) at a rate of 40 to 60 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid is 1.2 to 1.4 times the mass of the mesoporous silica microspheres. The temperature is raised to 60 to 80°C and stirring is continued for 2 to 4 hours to prepare modified mesoporous silica microspheres.

[0015] Furthermore, the particle size of the mesoporous silica microspheres is 2 to 6 μm.

[0016] Furthermore, the preparation method of the polyethylene terephthalate in step (2) is as follows: under argon protection, ethylene glycol and concentrated sulfuric acid are mixed in a mass ratio of 1:0.8 to 1:1.2, stirred at 400 to 600 r / min for 30 to 50 min, heated to 60 to 80°C, 2,5-dihydroxyterephthalic acid (4 to 6 times the mass of ethylene glycol) is added dropwise at 40 to 60 drops / min, stirring is continued for 2 to 4 hours, and then ethylene glycol is added dropwise at a mass ratio of 1:0.6 to 1:0.8 at 40 to 60 drops / min. Acid and concentrated sulfuric acid, wherein the mass of acetic acid is 2 to 4 times that of ethylene glycol, heat to 60 to 80°C, continue stirring for 2 to 4 hours, then add ethanol and sodium in a mass ratio of 1:0.2 to 1:0.4, wherein the mass of ethanol is 3 to 5 times that of ethylene glycol, continue heating to 80 to 100°C, stir at 400 to 600 r / min for 8 to 10 hours, and rotary evaporate at 2000 to 2400 r / min for 1 to 3 hours at 153 to 155°C and 10 to 20 Pa to prepare polyethylene terephthalate.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] When preparing the tensile mesh yarn, the present invention first mixes and spins modified mesoporous silica microspheres and polyethylene terephthalate in an ammonia atmosphere to prepare modified PET fibers; then mixes and spins nylon and allyl polyethylene glycol to prepare composite nylon fibers; finally, the modified PET fibers are used as warps and the composite nylon fibers are used as wefts, and then hot rolling is performed to prepare the tensile mesh yarn.

[0019] First, the carboxyl group on 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid reacts with the hydroxyl group on the surface of mesoporous silica to graft 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid onto the mesoporous silica. Molten polyethylene terephthalate passes through the pores of the mesoporous silica. The α-halomethyl ketone on 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and the acetoacetate on polyethylene terephthalate react in an ammonia atmosphere to form pyrrole. The mesoporous silica is evenly dispersed in the polyethylene terephthalate, forming a large number of protruding mesoporous silica micro-nanostructures on the surface of the waterproof fiber, which enhances the waterproof performance of the waterproof fiber while enhancing the antibacterial properties of the waterproof fiber.

[0020] Secondly, the amino group on the nylon end chain and the alcohol on the allyl polyethylene glycol are dehydrated and hydrogenated to form a hyperbranched structure containing tertiary amine, which improves the tensile properties of the composite nylon fiber; the protruding mesoporous silica on the waterproof fiber is embedded in the cavity of the composite nylon fiber, and the allyl polyethylene glycol on the composite nylon fiber melts and penetrates into the mesopores of the mesoporous silica. The propylene on the composite nylon fiber reacts with the pentene on the surface of the mesoporous silica, firmly connecting the modified PET fiber and the composite nylon fiber, thereby enhancing the tensile properties of the tensile mesh. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In order to more clearly illustrate the method provided by the present invention, the following examples are used to describe in detail the various index testing methods of the tensile mesh prepared in the following examples.

[0023] Antibacterial property: The antibacterial rate of the tensile mesh prepared in the embodiment and the comparative example of the same mass was tested according to GB / T20944.

[0024] Waterproofness: The same mass of tensile mesh prepared in the embodiment and comparative example was taken and the water contact angle was measured using a hydrophobic angle measuring instrument.

[0025] Tensile strength: The tensile strength of the tensile mesh prepared in the embodiment and the comparative example of the same mass was tested according to GB / T3923.2.

[0026] Example 1

[0027] (1) At room temperature and under argon protection, mesoporous silica microspheres with a particle size of 2 μm and a hydrochloric acid solution with a mass fraction of 10% were mixed in a mass ratio of 1:3, stirred at 400 r / min for 30 min, filtered, washed with deionized water to pH 6.8, dried at 40°C for 1 h, and then immersed in chloroform twice the mass of the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.6 at a rate of 40 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.2 times that of the mesoporous silica microspheres. The temperature was raised to 60°C and stirred for 2 h to prepare modified mesoporous silica microspheres.

[0028] (2) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:0.8, stirred at 400 r / min for 30 min, heated to 60°C, and 2,5-dihydroxyterephthalic acid (4 times the mass of ethylene glycol) was added dropwise at 40 drops / min, and stirring was continued for 2 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.6 at 40 drops / min, wherein the mass of acetic acid was 2 times that of ethylene glycol. The temperature was raised to 60°C, and stirring was continued for 2 h. Ethanol and sodium were then added in a mass ratio of 1:0.2, wherein the mass of ethanol was 3 times that of ethylene glycol. The temperature was continued to rise to 80°C, and stirred at 400 r / min for 8 h. At 153°C and 10 Pa, the mixture was rotary evaporated at 2000 r / min for 1 h to prepare polyethylene terephthalate.

[0029] (3) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.2:3, ultrasonicated at 30 kHz for 20 min, and then heated at 2 m 3 / min, introduce ammonia gas 0.5 times the mass of polyethylene terephthalate, pressurize to 2MPa, heat to 88°C, continue ultrasonication for 20min, stir at 400r / min for 47h, rotary evaporate at 2000r / min at 88°C and 10Pa for 1h, put into a 300°C spinning box, use a screw extruder to spin at a spinning speed of 3800m / min, and carry out side blowing cooling and curing for 25min at 10°C, humidity of 60% and wind speed of 0.9m / s to prepare 6tex modified PET fiber;

[0030] (4) At 120 °C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:3, stirred at 400 r / min for 12 h, pressurized to 396 kPa, and heated at 0.25 m 3 / h, hydrogen gas 0.4 times the mass of nylon was introduced, stirring was continued for 24h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 265°C, and spun using a screw extruder at a spinning speed of 3800m / min. The mixture was cooled and solidified with side air for 25min at 10°C, 60% humidity, and a wind speed of 0.9m / s to prepare a 6tex composite nylon fiber.

[0031] (5) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:0.8, rolled twice at a rolling speed of 123 m / min, a roller distance of 1.4 mm, a pressure of 0.25 MPa and 120°C, cooled to 63°C, immersed in diisopropyl peroxide dicarbonate (0.4 times the mass of the modified PET fiber) for 1 min, fished out, and rolled twice more. The mesh was washed twice with anhydrous ethanol and deionized water in turn, and dried in a 40°C oven for 2 h to prepare a 100-mesh tensile mesh.

[0032] Example 2

[0033] (1) At room temperature and under argon protection, mesoporous silica microspheres with a particle size of 4 μm and a hydrochloric acid solution with a mass fraction of 15% were mixed in a mass ratio of 1:4, stirred at 50 r / min for 40 min, filtered, washed with deionized water to pH 7, dried at 50°C for 2 h, and then immersed in chloroform with a mass of 3 times that of the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.7 at a rate of 50 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.3 times that of the mesoporous silica microspheres. The temperature was raised to 70°C and stirred for 3 h to prepare modified mesoporous silica microspheres.

[0034] (2) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:1, stirred at 500 r / min for 40 min, heated to 70°C, and 2,5-dihydroxyterephthalic acid (5 times the mass of ethylene glycol) was added dropwise at 50 drops / min, and stirring was continued for 3 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.7 at 50 drops / min, wherein the mass of acetic acid was 3 times that of ethylene glycol. The temperature was raised to 70°C, and stirring was continued for 3 h. Ethanol and sodium were then added in a mass ratio of 1:0.3, wherein the mass of ethanol was 4 times that of ethylene glycol. The temperature was continued to rise to 90°C, and stirred at 500 r / min for 9 h. At 154°C and 15 Pa, the mixture was rotary evaporated at 2200 r / min for 2 h to prepare polyethylene terephthalate.

[0035] (3) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.3:4, ultrasonicated at 35 kHz for 30 min, and then heated at 3 m3 / min, introduce ammonia gas 0.6 times the mass of polyethylene terephthalate, pressurize to 2.5MPa, heat to 93°C, continue ultrasonication for 30min, stir at 50r / min for 48h, and rotary evaporate at 2200r / min for 2h at 98°C and 15Pa. Put it into a spinning box at 305°C, and use a screw extruder to spin it at a spinning speed of 4000m / min. Cool and solidify it with side air at 15°C, 70% humidity and a wind speed of 1.1m / s for 30min to prepare 8tex modified PET fiber;

[0036] (4) At 125 ° C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:4, stirred at 50 r / min for 13 h, pressurized to 397 kPa, and heated at 0.4 m 3 / h, hydrogen gas 0.5 times the mass of nylon was introduced, stirring was continued for 25h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 267°C, and spun using a screw extruder at a spinning speed of 4000m / min. The mixture was cooled and solidified with side air for 30min at 15°C, a humidity of 70%, and a wind speed of 1.1m / s to prepare a composite nylon fiber of 8tex;

[0037] (5) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1. The warp and weft were rolled three times at a rolling speed of 192 m / min, a roller distance of 2.1 mm, a pressure of 0.3 MPa and 130 °C. The temperature was lowered to 64 °C, and the modified PET fiber was immersed in diisopropyl peroxide dicarbonate (0.5 times the mass of the modified PET fiber) for 2 min. The modified PET fiber was removed and rolled three times. The modified PET fiber was washed with anhydrous ethanol and deionized water three times in sequence, and dried in a 45 °C oven for 3 h to prepare a 150-mesh tensile mesh.

[0038] Example 3

[0039] (1) At room temperature and under argon protection, mesoporous silica microspheres with a particle size of 6 μm and a hydrochloric acid solution with a mass fraction of 20% were mixed in a mass ratio of 1:5, stirred at 600 r / min for 50 min, filtered, washed with deionized water to pH 7.2, dried at 60°C for 3 h, and then immersed in chloroform with a mass ratio of 4 times that of the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.8 at a rate of 60 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.4 times that of the mesoporous silica microspheres. The temperature was raised to 80°C and stirred for 4 h to prepare modified mesoporous silica microspheres.

[0040] (2) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:1.2, stirred at 600 r / min for 50 min, heated to 80°C, and 2,5-dihydroxyterephthalic acid (6 times the mass of ethylene glycol) was added dropwise at 60 drops / min, and stirring was continued for 4 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.8 at 60 drops / min, wherein the mass of acetic acid was 4 times that of ethylene glycol. The temperature was raised to 80°C, and stirring was continued for 4 h. Ethanol and sodium were then added in a mass ratio of 1:0.4, wherein the mass of ethanol was 5 times that of ethylene glycol. The temperature was continued to rise to 100°C, and stirred at 600 r / min for 10 h. The mixture was rotary evaporated at 2400 r / min at 155°C and 20 Pa for 3 h to prepare polyethylene terephthalate.

[0041] (3) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.4:5, ultrasonicated at 40 kHz for 40 min, and then heated at 4 m 3 / min, introduce ammonia gas 0.7 times the mass of polyethylene terephthalate, pressurize to 3MPa, heat to 98°C, continue ultrasonication for 40min, stir at 600r / min for 49h, and rotary evaporate at 2400r / min for 3h at 108°C and 20Pa. Put it into a spinning box at 310°C, and use a screw extruder to spin it at a spinning speed of 4200m / min. Cool and solidify it with side air at 20°C, 80% humidity and a wind speed of 1.3m / s for 35min to prepare a modified PET fiber of 10tex;

[0042] (4) At 130 °C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:5, stirred at 600 r / min for 14 h, pressurized to 398 kPa, and heated at 0.55 m 3 / h, hydrogen gas 0.6 times the mass of nylon was introduced, stirring was continued for 26h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 270°C, and spun using a screw extruder at a spinning speed of 4200m / min. The mixture was cooled and solidified with side air for 35min at 20°C, 80% humidity, and a wind speed of 1.3m / s to prepare a 10tex composite nylon fiber.

[0043] (5) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1.2. The warp and weft were rolled three times at a rolling speed of 260 m / min, a roller distance of 2.9 mm, a pressure of 0.35 MPa and 140°C. The temperature was lowered to 65°C and the modified PET fiber was immersed in diisopropyl peroxide dicarbonate (0.6 times the mass of the modified PET fiber) for 3 minutes. The modified PET fiber was taken out and rolled three times. The modified PET fiber was washed with anhydrous ethanol and deionized water four times in turn. The fiber was dried in a 50°C oven for 4 hours to prepare a 200-mesh tensile mesh.

[0044] Comparative Example 1

[0045] (1) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:1, stirred at 500 r / min for 40 min, heated to 70°C, and 2,5-dihydroxyterephthalic acid (5 times the mass of ethylene glycol) was added dropwise at 50 drops / min, and stirring was continued for 3 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.7 at 50 drops / min, wherein the mass of acetic acid was 3 times that of ethylene glycol. The temperature was raised to 70°C, and stirring was continued for 3 h. Ethanol and sodium were then added in a mass ratio of 1:0.3, wherein the mass of ethanol was 4 times that of ethylene glycol. The temperature was continued to rise to 90°C, and stirred at 500 r / min for 9 h. At 154°C and 15 Pa, the mixture was rotary evaporated at 2200 r / min for 2 h to prepare polyethylene terephthalate.

[0046] (2) Under argon protection, polyethylene terephthalate, mesoporous silica microspheres with a particle size of 4 μm, and ethanol were mixed in a mass ratio of 1:0.3:4, ultrasonicated at 35 kHz for 30 min, and then heated at 3 m 3 / min, introduce ammonia gas 0.6 times the mass of polyethylene terephthalate, pressurize to 2.5MPa, heat to 93°C, continue ultrasonication for 30min, stir at 50r / min for 48h, and rotary evaporate at 2200r / min for 2h at 98°C and 15Pa. Put it into a spinning box at 305°C, and use a screw extruder to spin it at a spinning speed of 4000m / min. Cool and solidify it with side air at 15°C, 70% humidity and a wind speed of 1.1m / s for 30min to prepare 8tex modified PET fiber;

[0047] (3) At 125 ° C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:4, stirred at 50 r / min for 13 h, pressurized to 397 kPa, and heated at 0.4 m 3 / h, hydrogen gas 0.5 times the mass of nylon was introduced, stirring was continued for 25h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 267°C, and spun using a screw extruder at a spinning speed of 4000m / min. The mixture was cooled and solidified with side air for 30min at 15°C, a humidity of 70%, and a wind speed of 1.1m / s to prepare a composite nylon fiber of 8tex;

[0048] (4) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1. The warp and weft were rolled three times at a rolling speed of 192 m / min, a roller distance of 2.1 mm, a pressure of 0.3 MPa and 130 °C. The temperature was lowered to 64 °C, and the modified PET fiber was immersed in diisopropyl peroxide dicarbonate (0.5 times the mass of the modified PET fiber) for 2 min. The modified PET fiber was removed and rolled three times. The modified PET fiber was washed with anhydrous ethanol and deionized water three times in sequence, and dried in a 45 °C oven for 3 h to prepare a 150-mesh tensile mesh.

[0049] Comparative Example 2

[0050] (1) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:1, stirred at 500 r / min for 40 min, heated to 70°C, and 2,5-dihydroxyterephthalic acid (5 times the mass of ethylene glycol) was added dropwise at 50 drops / min, and stirring was continued for 3 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.7 at 50 drops / min, wherein the mass of acetic acid was 3 times that of ethylene glycol. The temperature was raised to 70°C, and stirring was continued for 3 h. Ethanol and sodium were then added in a mass ratio of 1:0.3, wherein the mass of ethanol was 4 times that of ethylene glycol. The temperature was continued to rise to 90°C, and stirred at 500 r / min for 9 h. At 154°C and 15 Pa, the mixture was rotary evaporated at 2200 r / min for 2 h to prepare polyethylene terephthalate.

[0051] (2) Under argon protection, polyethylene terephthalate and ethanol were mixed in a mass ratio of 1:4, ultrasonicated at 35kHz for 30min, and then heated at 3m 3 / min, introduce ammonia gas 0.6 times the mass of polyethylene terephthalate, pressurize to 2.5MPa, heat to 93°C, continue ultrasonication for 30min, stir at 50r / min for 48h, and rotary evaporate at 2200r / min for 2h at 98°C and 15Pa. Put it into a spinning box at 305°C, and use a screw extruder to spin it at a spinning speed of 4000m / min. Cool and solidify it with side air at 15°C, 70% humidity and a wind speed of 1.1m / s for 30min to prepare 8tex modified PET fiber;

[0052] (3) At 125 ° C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:4, stirred at 50 r / min for 13 h, pressurized to 397 kPa, and heated at 0.4 m 3 / h, hydrogen gas 0.5 times the mass of nylon was introduced, stirring was continued for 25h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 267°C, and spun using a screw extruder at a spinning speed of 4000m / min. The mixture was cooled and solidified with side air for 30min at 15°C, a humidity of 70%, and a wind speed of 1.1m / s to prepare a composite nylon fiber of 8tex;

[0053] (4) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1. The warp and weft were rolled three times at a rolling speed of 192 m / min, a roller distance of 2.1 mm, a pressure of 0.3 MPa and 130 °C. The temperature was lowered to 64 °C, and the modified PET fiber was immersed in diisopropyl peroxide dicarbonate (0.5 times the mass of the modified PET fiber) for 2 min. The modified PET fiber was removed and rolled three times. The modified PET fiber was washed with anhydrous ethanol and deionized water three times in sequence, and dried in a 45 °C oven for 3 h to prepare a 150-mesh tensile mesh.

[0054] Comparative Example 3

[0055] (1) At room temperature and under argon protection, mesoporous silica microspheres with a particle size of 4 μm and a hydrochloric acid solution with a mass fraction of 15% were mixed in a mass ratio of 1:4, stirred at 50 r / min for 40 min, filtered, washed with deionized water to pH 7, dried at 50°C for 2 h, and then immersed in chloroform with a mass of 3 times that of the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.7 at a rate of 50 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.3 times that of the mesoporous silica microspheres. The temperature was raised to 70°C and stirred for 3 h to prepare modified mesoporous silica microspheres.

[0056] (2) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:1, stirred at 500 r / min for 40 min, heated to 70°C, and 2,5-dihydroxyterephthalic acid (5 times the mass of ethylene glycol) was added dropwise at 50 drops / min, and stirring was continued for 3 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.7 at 50 drops / min, wherein the mass of acetic acid was 3 times that of ethylene glycol. The temperature was raised to 70°C, and stirring was continued for 3 h. Ethanol and sodium were then added in a mass ratio of 1:0.3, wherein the mass of ethanol was 4 times that of ethylene glycol. The temperature was continued to rise to 90°C, and stirred at 500 r / min for 9 h. At 154°C and 15 Pa, the mixture was rotary evaporated at 2200 r / min for 2 h to prepare polyethylene terephthalate.

[0057] (3) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.3:4, ultrasonicated at 35 kHz for 30 min, and then heated at 3 m3 / min, introduce ammonia gas 0.6 times the mass of polyethylene terephthalate, pressurize to 2.5MPa, heat to 93°C, continue ultrasonication for 30min, stir at 50r / min for 48h, and rotary evaporate at 2200r / min for 2h at 98°C and 15Pa. Put it into a spinning box at 305°C, and use a screw extruder to spin it at a spinning speed of 4000m / min. Cool and solidify it with side air at 15°C, 70% humidity and a wind speed of 1.1m / s for 30min to prepare 8tex modified PET fiber;

[0058] (4) The nylon was placed in a spinning box at 267°C and spun using a screw extruder at a spinning speed of 4000 m / min. The nylon was then cooled and solidified with side air for 30 min at 15°C, a humidity of 70%, and a wind speed of 1.1 m / s to prepare an 8 tex composite nylon fiber.

[0059] (5) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1. The warp and weft were rolled three times at a rolling speed of 192 m / min, a roller distance of 2.1 mm, a pressure of 0.3 MPa and 130 °C. The temperature was lowered to 64 °C, and the modified PET fiber was immersed in diisopropyl peroxide dicarbonate (0.5 times the mass of the modified PET fiber) for 2 min. The modified PET fiber was removed and rolled three times. The modified PET fiber was washed with anhydrous ethanol and deionized water three times in sequence, and dried in a 45 °C oven for 3 h to prepare a 150-mesh tensile mesh.

[0060] Comparative Example 4

[0061] (1) At room temperature and under argon protection, mesoporous silica microspheres with a particle size of 4 μm and a hydrochloric acid solution with a mass fraction of 15% were mixed in a mass ratio of 1:4, stirred at 50 r / min for 40 min, filtered, washed with deionized water to pH 7, dried at 50°C for 2 h, and then immersed in chloroform with a mass of 3 times that of the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.7 at a rate of 50 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.3 times that of the mesoporous silica microspheres. The temperature was raised to 70°C and stirred for 3 h to prepare modified mesoporous silica microspheres.

[0062] (2) Under argon protection, PET resin, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.3:4, ultrasonicated at 35 kHz for 30 min, and then heated at 3 m 3 / min, introduce ammonia gas 0.6 times the mass of PET resin, pressurize to 2.5MPa, raise the temperature to 93℃, continue ultrasonication for 30min, stir at 50r / min for 48h, and rotary evaporate at 2200r / min for 2h at 98℃ and 15Pa. Put it into a spinning box at 305℃ and use a screw extruder to spin at a spinning speed of 4000m / min. Cool and solidify with side air for 30min at 15℃, humidity of 70% and wind speed of 1.1m / s to prepare 8tex modified PET fiber;

[0063] (4) At 125 ° C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:4, stirred at 50 r / min for 13 h, pressurized to 397 kPa, and heated at 0.4 m 3 / h, hydrogen gas 0.5 times the mass of nylon was introduced, stirring was continued for 25h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 267°C, and spun using a screw extruder at a spinning speed of 4000m / min. The mixture was cooled and solidified with side air for 30min at 15°C, a humidity of 70%, and a wind speed of 1.1m / s to prepare a composite nylon fiber of 8tex;

[0064] (5) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1. The warp and weft were rolled three times at a rolling speed of 192 m / min, a roller distance of 2.1 mm, a pressure of 0.3 MPa and 130 °C. The temperature was lowered to 64 °C, and the modified PET fiber was immersed in diisopropyl peroxide dicarbonate (0.5 times the mass of the modified PET fiber) for 2 min. The modified PET fiber was removed and rolled three times. The modified PET fiber was washed with anhydrous ethanol and deionized water three times in sequence, and dried in a 45 °C oven for 3 h to prepare a 150-mesh tensile mesh.

[0065] Comparative Example 5

[0066] (1) At room temperature and under argon protection, mesoporous silica microspheres with a particle size of 4 μm and a hydrochloric acid solution with a mass fraction of 15% were mixed in a mass ratio of 1:4, stirred at 50 r / min for 40 min, filtered, washed with deionized water to pH 7, dried at 50°C for 2 h, and then immersed in chloroform with a mass of 3 times that of the mesoporous silica microspheres. 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.7 at a rate of 50 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.3 times that of the mesoporous silica microspheres. The temperature was raised to 70°C and stirred for 3 h to prepare modified mesoporous silica microspheres.

[0067] (2) Under argon protection, ethylene glycol and concentrated sulfuric acid were mixed in a mass ratio of 1:1, stirred at 500 r / min for 40 min, heated to 70°C, and 2,5-dihydroxyterephthalic acid (5 times the mass of ethylene glycol) was added dropwise at 50 drops / min, and stirring was continued for 3 h. Acetic acid and concentrated sulfuric acid were then added dropwise at a mass ratio of 1:0.7 at 50 drops / min, wherein the mass of acetic acid was 3 times that of ethylene glycol. The temperature was raised to 70°C, and stirring was continued for 3 h. Ethanol and sodium were then added in a mass ratio of 1:0.3, wherein the mass of ethanol was 4 times that of ethylene glycol. The temperature was continued to rise to 90°C, and stirred at 500 r / min for 9 h. At 154°C and 15 Pa, the mixture was rotary evaporated at 2200 r / min for 2 h to prepare polyethylene terephthalate.

[0068] (3) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.3:4, ultrasonicated at 35 kHz for 30 min, and then heated at 3 m 3 / min, introduce ammonia gas 0.6 times the mass of polyethylene terephthalate, pressurize to 2.5MPa, heat to 93°C, continue ultrasonication for 30min, stir at 50r / min for 48h, and rotary evaporate at 2200r / min for 2h at 98°C and 15Pa. Put it into a spinning box at 305°C, and use a screw extruder to spin it at a spinning speed of 4000m / min. Cool and solidify it with side air at 15°C, 70% humidity and a wind speed of 1.1m / s for 30min to prepare 8tex modified PET fiber;

[0069] (4) At 125 ° C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:4, stirred at 50 r / min for 13 h, pressurized to 397 kPa, and heated at 0.4 m 3 / h, hydrogen gas 0.5 times the mass of nylon was introduced, stirring was continued for 25h, and the mixture was naturally cooled to room temperature. The mixture was placed in a spinning box at 267°C, and spun using a screw extruder at a spinning speed of 4000m / min. The mixture was cooled and solidified with side air for 30min at 15°C, a humidity of 70%, and a wind speed of 1.1m / s to prepare a composite nylon fiber of 8tex;

[0070] (5) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:1, rolled 3 times at a rolling speed of 192 m / min, a roller distance of 2.1 mm, and a pressure of 0.3 MPa. The fibers were immersed in diisopropyl peroxide dicarbonate (0.5 times the mass of the modified PET fiber) for 2 min, removed, and rolled 3 times. The fibers were washed with anhydrous ethanol and deionized water 3 times in sequence, and dried in a 45°C oven for 3 h to prepare a 150-mesh tensile mesh.

[0071] Effect Examples

[0072] Table 1 below shows the analysis results of the antibacterial properties, waterproof properties and tensile strength of the tensile mesh yarns prepared using Examples 1 to 3 of the present invention and Comparative Examples 1 to 5.

[0073] Table 1

[0074]

[0075] It can be found from Table 1 that the anti-bacterial, waterproof and tensile-resistant mesh prepared in Examples 1, 2 and 3 have strong antibacterial properties, waterproof properties and tensile resistance; from the comparison of the experimental data of Examples 1, 2 and 3 and Comparative Examples 1, 2 and 5, it can be found that the modified PET fiber prepared by using modified mesoporous silica microspheres prepared by 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid can form pyrrole, and the anti-bacterial, waterproof and tensile-resistant mesh prepared has strong antibacterial properties, waterproof properties and tensile resistance; from the experimental data of Examples 1, 2 and 3 and Comparative Examples 3 and 5, it can be found that the composite nylon fiber prepared by using allyl polyethylene glycol can produce an anti-bacterial mesh with strong tensile resistance; from the experimental data of Examples 1, 2 and 3 and Comparative Examples 4 and 5, it can be found that the modified PET fiber prepared by using ethylene terephthalate can form pyrrole, and the anti-bacterial mesh prepared has strong antibacterial properties.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed therein. Any reference in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A tensile mesh, characterized in that: The tensile mesh is prepared by weaving modified PET fibers as warps and composite nylon fibers as wefts, followed by hot rolling; the modified PET fibers are obtained by mixed spinning of modified mesoporous silica microspheres and polyethylene terephthalate in an ammonia atmosphere; the modified mesoporous silica microspheres are prepared by modifying 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid modified mesoporous silica microspheres; the preparation method of the modified mesoporous silica microspheres is as follows: at room temperature and under argon protection, the mesoporous silica microspheres and a hydrochloric acid solution with a mass fraction of 10-20% are mixed in a mass ratio of 1:3-1:5, and the mixture is heated to 400°C. ~600r / min and stirred for 30~50min, filtered, washed with deionized water to pH6.8~7.2, dried at 40~60℃ for 1~3h, then immersed in chloroform 2~4 times the mass of the mesoporous silica microspheres, and 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid and concentrated sulfuric acid were added dropwise at a mass ratio of 1:0.6~1:0.8 at a rate of 40~60 drops / min, wherein the mass of 2,3,5,5,5-pentachloro-4-oxo-2-pentenoic acid was 1.2~1.4 times that of the mesoporous silica microspheres. The temperature was raised to 60~80℃ and stirring was continued for 2~4h to prepare modified mesoporous silica microspheres.

2. The tensile mesh according to claim 1, characterized in that: The composite nylon fiber is prepared by mixing nylon and allyl polyethylene glycol and spinning them together.

3. The tensile mesh according to claim 1, characterized in that: The particle size of the mesoporous silica microspheres is 2-6 μm.

4. A method for preparing the tensile mesh according to claim 1, characterized in that: The method mainly includes the following preparation steps: (1) Under argon protection, polyethylene terephthalate, modified mesoporous silica microspheres, and ethanol were mixed in a mass ratio of 1:0.2:3~1:0.4:5, and ultrasonicated at 30~40kHz for 20~40min. Then, ammonia gas 0.5~0.7 times the mass of polyethylene terephthalate was introduced at 2~4m3 / min, pressurized to 2~3MPa, heated to 88~98℃, and ultrasonicated for 20~40min. Stirred at 400~600r / min for 47~4 9h, at 88~108℃, 10~20Pa, rotary steam at 2000~2400r / min for 1~3h, put into 300~310℃ spinning box, and use screw extruder to spin at 3800~4200m / min spinning speed. Under the conditions of 10~20℃, humidity of 60~80% and wind speed of 0.9~1.3m / s, side blowing cooling and curing are carried out for 25~35min to prepare 6~10tex modified PET fiber; (2) At 120-130°C and under argon protection, nylon and allyl polyethylene glycol were mixed in a mass ratio of 1:3-1:5, stirred at 400-600 r / min for 12-14 h, pressurized to 396-398 kPa, and hydrogen 0.4-0.6 times the mass of nylon was introduced at 0.25-0.55 m3 / h. Stirring was continued for 24-26 h, cooled naturally to room temperature, placed in a spinning box at 265-270°C, and spun using a screw extruder at a spinning speed of 3800-4200 m / min. Side-blown cooling and curing were carried out for 25-35 min at 10-20°C, humidity of 60-80%, and wind speed of 0.9-1.3 m / s to prepare 6-10 tex composite nylon fibers. (3) The modified PET fiber was used as the warp and the composite nylon fiber was used as the weft. The warp and weft were woven at a mass ratio of 1:0.8 to 1:1.

2. The warp and weft were rolled 2 to 3 times at a rolling speed of 123 to 260 m / min, a roller distance of 1.4 to 2.9 mm, a pressure of 0.25 to 0.35 MPa and 120 to 140 °C. The temperature was lowered to 63 to 65 °C. The modified PET fiber was immersed in 0.4 to 0.6 times the mass of diisopropyl peroxide dicarbonate for 1 to 3 min. The modified PET fiber was removed and rolled 2 to 3 times. The modified PET fiber was washed with anhydrous ethanol and deionized water for 2 to 4 times. The fiber was dried in an oven at 40 to 50 °C for 2 to 4 h to prepare a tensile mesh with a mesh size of 100 to 200.

5. The method for preparing a tensile mesh according to claim 4, characterized in that: The preparation method of polyethylene terephthalate in step (1) is as follows: under argon protection, ethylene glycol and concentrated sulfuric acid are mixed in a mass ratio of 1:0.8~1:1.2, stirred at 400~600r / min for 30~50min, heated to 60~80℃, 2,5-dihydroxyterephthalic acid (4~6 times the mass of ethylene glycol) is added dropwise at 40~60 drops / min, stirring is continued for 2~4h, and then acetic acid and 1:0.6~1:0.8 are added dropwise at 40~60 drops / min. Concentrated sulfuric acid, wherein the mass of acetic acid is 2-4 times that of ethylene glycol, is heated to 60-80°C and stirred for 2-4 hours, and then ethanol and sodium are added at a mass ratio of 1:0.2-1:0.4, wherein the mass of ethanol is 3-5 times that of ethylene glycol, and the temperature is continued to rise to 80-100°C, stirred at 400-600 r / min for 8-10 hours, and rotary evaporated at 2000-2400 r / min for 1-3 hours at 153-155°C and 10-20 Pa to prepare polyethylene terephthalate.

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