An antistatic compact spun mesh ring and its preparation process

Abstract

This invention relates to the field of textile accessories, specifically to an antistatic compact spun mesh ring and its preparation process. The invention first modifies graphene oxide using chitosan and hexachlorocyclotriphosphazene to obtain composite modified graphene. Acrylic fiber is selected as the substrate, and divinylbenzoic acid is grafted onto the surface of the acrylic fiber through ultraviolet irradiation. Then, thionyl chloride reacts with the carboxyl groups to undergo an acylation reaction, yielding modified acrylic fiber. The composite modified graphene is then loaded onto the surface of the modified acrylic fiber to prepare graphene-modified acrylic fiber. This fiber is then blended with nylon fiber to prepare warp yarns and with polyester fiber to prepare weft yarns. Finally, the compact spun mesh ring is obtained through plain weave, crimping, and setting. The compact spun mesh ring prepared by this invention has lower surface resistance, excellent antistatic properties, and also exhibits antibacterial and flame-retardant properties, making it highly practical.

Description

Technical Field

[0001] This invention relates to the field of textile accessories technology, specifically to an antistatic compact spun mesh ring and its preparation process. Background Technology

[0002] Compact spinning, also known as tight spinning, compression spinning, or cohesive spinning, is mainly used in cotton and wool spinning. However, the rapid adoption of compact spinning has also led to static electricity problems. The main cause of static electricity is the mesh ring. The mesh ring is a ring-shaped mesh fiber material manufactured by a nylon or polyester monofilament machine. The processed wadding is also a fiber material. During the production process, compact spinning is always in a dry environment. The mesh ring and the wadding rub against each other, constantly generating electrons and forming an electric field, thus producing static electricity. Static electricity easily causes the wadding and mesh ring to entangle, leading to clogging. Therefore, it is essential to invent an antistatic compact spinning mesh ring. Summary of the Invention

[0003] The purpose of this invention is to provide an antistatic tightly spun mesh ring and its preparation process to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an antistatic compact spun mesh ring and its preparation process, comprising the following steps:

[0005] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after the reaction, add graphene oxide and continue stirring to obtain composite modified graphene;

[0006] Step 2: Take acrylic fiber, soak it in a solution of acetone, benzophenone and divinylbenzoic acid, irradiate it with ultraviolet light, rinse it with deionized water and dry it, then soak it in thionyl chloride, react, wash and dry it to obtain modified acrylic fiber.

[0007] Step 3: Disperse the composite modified graphene in a deionized aqueous solution, add modified acrylic fiber and sodium bicarbonate, react to obtain graphene modified acrylic fiber;

[0008] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and warp yarns are obtained through drawing, roving, sanding, and winding processes; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and weft yarns are obtained through drawing, roving, sanding, and winding processes.

[0009] Step 5: Weave the mesh fabric using a plain weave method; cut the mesh fabric and roll it into a loop; seal the edges of the mesh loop, steam set it, and cool it to obtain an antistatic compact spun mesh loop.

[0010] Furthermore, in step 1, the preparation conditions for the composite modified graphene are as follows: after reacting the mixed solution in an ice bath for 4–6 hours, graphene oxide is added and the reaction is continued with stirring for 3–4 hours.

[0011] Furthermore, in step 2, the ultraviolet irradiation time is 15–30 min; the ultraviolet light intensity is 15–20 W / m². 2 .

[0012] Furthermore, in step 3, the preparation conditions for graphene-modified acrylic fibers are a reaction at 60–90°C for 3–5 min.

[0013] Furthermore, in step 4, the ply ratio of graphene-modified acrylic fiber to nylon fiber in the warp yarn is (2-3):(1-2).

[0014] Furthermore, in step 4, the diameter of the warp wire is 0.2–0.24 mm.

[0015] Furthermore, in step 4, the ply ratio of graphene-modified acrylic fiber to polyester fiber in the weft yarn is (3-4):(1-2).

[0016] Furthermore, in step 4, the diameter of the weft yarn is 0.14–0.18 mm.

[0017] Furthermore, in step 5, the warp and weft density of the mesh fabric is (95~100)×(125~135); the warp and weft ply ratio is (3~4):(1~2); and the thickness is 0.7~0.9mm.

[0018] Furthermore, in step 5, the steam setting time is 10–15 minutes.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention loads composite modified graphene onto the surface of acrylic fiber to obtain graphene modified acrylic fiber, thereby improving the antistatic properties of acrylic fiber; the graphene modified acrylic fiber is blended with nylon fiber to prepare warp yarn, and the graphene modified acrylic fiber is blended with polyester fiber to prepare weft yarn, and a mesh fabric is woven using a plain weave method, and the mesh fabric is curled, edge-sealed, and shaped to obtain an antistatic tightly spun mesh loop.

[0020] In the preparation of composite modified graphene, chitosan and hexachlorocyclotriphosphazene are first reacted. Chitosan contains two reactive groups, hydroxyl and amino, both of which can react with hexachlorocyclotriphosphazene. Normally, hexachlorocyclotriphosphazene contains six chlorine groups and is chemically very reactive, reacting readily with chitosan. However, in actual reactions, due to steric hindrance, excessive chitosan dosage can hinder the grafting of the product onto graphene. Therefore, the dosage of both chitosan and hexachlorocyclotriphosphazene needs to be controlled. Through multiple experiments, it was found that when the molar ratio of amino groups in chitosan to hexachlorocyclotriphosphazene is (1–2):1, the product is more easily grafted onto graphene oxide.

[0021] Conventional antistatic treatment methods for fibers involve applying antistatic agents to the fabric. While this method provides a temporary antistatic effect, it cannot achieve a lasting antistatic effect. This invention utilizes ultraviolet irradiation to graft divinylbenzoic acid onto the surface of acrylic fibers, introducing benzene rings and carboxyl groups. Then, thionyl chloride reacts with the carboxyl groups to introduce acyl chloride groups. These acyl chloride groups react with chitosan on the composite modified graphene to form chemical bonds, achieving a long-lasting antistatic effect.

[0022] It should be noted that conventional acrylic fiber surface treatment generally uses alkaline solution immersion. Acrylic fibers are prone to hydrolysis in alkaline solutions, which damages the fiber surface and reduces performance. However, this invention uses ultraviolet irradiation grafting to treat acrylic fibers, which is less harmful. At the same time, this invention adds weakly alkaline sodium bicarbonate as an acid-binding agent and controls its amount to about 5% of the modified acrylic fiber amount, which can protect the acrylic fibers as much as possible and prevent hydrolysis.

[0023] In this invention, the graphene loaded on the surface of the acrylic fiber exhibits excellent electrical conductivity, effectively reducing the surface resistivity of the mesh ring. Even in a dry environment, it retains good antistatic properties, meeting practical production needs. Benzene rings and hexachlorocyclotriphosphazene enhance the heat resistance and flame retardancy of the mesh ring. Chitosan is a good biodegradable antibacterial material, green and pollution-free, and also endows the mesh ring with certain antibacterial capabilities. The mesh ring prepared by this invention has good antistatic, flame retardant, and antibacterial effects, and is highly practical. Detailed Implementation

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The materials used in this invention and their sources are as follows: chitosan is from Aladdin, item number C804726; graphene oxide is from Xianfeng Nano, item number XF009; acrylic fiber is from Xineng Textile Technology, 150D; nylon fiber is from Teli Chemical Fiber, item number LLRRS; polyester fiber is from Huilong New Materials, 300D; and antistatic agent is from Zhuangjie Chemical, model ZJ-NW16.

[0026] Example 1: A process for preparing an antistatic compact spun mesh ring, comprising the following steps:

[0027] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 4 hours, take 100g of the reaction solution and add 10g of graphene oxide, continue stirring and reacting for 3 hours to obtain composite modified graphene; wherein the molar ratio of amino groups to hexachlorocyclotriphosphazene in chitosan is 2:1, the mass of diethyl ether is 3 times the mass of chitosan, and the mass of pyridine is 0.5 times the mass of chitosan;

[0028] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, soak for 1 hour, using 15W / m 2 After irradiating with ultraviolet light for 15 minutes, rinsing and drying with deionized water, the product is soaked in 200g of thionyl chloride and reacted at 90℃ for 15 minutes. The product is then washed and dried to obtain modified acrylic fiber for later use.

[0029] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 60℃ for 3min to obtain graphene modified acrylic fiber.

[0030] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0031] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 10 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0032] Example 2: A process for preparing an antistatic compact spun mesh ring, comprising the following steps:

[0033] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 4 hours, take 100g of the reaction solution and add 10g of graphene oxide, continue stirring and reacting for 3 hours to obtain composite modified graphene; wherein the molar ratio of amino groups to hexachlorocyclotriphosphazene in chitosan is 2:1, the mass of diethyl ether is 3 times the mass of chitosan, and the mass of pyridine is 0.5 times the mass of chitosan;

[0034] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, soak for 2 hours, using 20W / m 2 After irradiating with ultraviolet light for 30 minutes, rinsing and drying with deionized water, the product was soaked in 200g of thionyl chloride and reacted at 120℃ for 45 minutes. The product was washed and dried to obtain modified acrylic fiber for later use.

[0035] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 90℃ for 5min to obtain graphene modified acrylic fiber.

[0036] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0037] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 15 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0038] Example 3: A process for preparing an antistatic compact spun mesh ring, comprising the following steps:

[0039] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 4.5 h, take 100 g of the reaction solution and add 10 g of graphene oxide, continue stirring and reacting for 3 h to obtain composite modified graphene; wherein the molar ratio of amino groups and hexachlorocyclotriphosphazene in chitosan is 2:1, the mass of diethyl ether is 3 times the mass of chitosan, and the mass of pyridine is 0.5 times the mass of chitosan;

[0040] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, and soak for 1.5 hours using 16W / m 2 After being irradiated with ultraviolet light for 18 minutes, rinsed with deionized water and dried, the product was soaked in 200g of thionyl chloride and reacted at 95℃ for 15 minutes. The product was washed and dried to obtain modified acrylic fiber for later use.

[0041] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 65℃ for 3min to obtain graphene modified acrylic fiber.

[0042] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0043] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 11 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0044] Example 4: A process for preparing an antistatic compact spun mesh ring, comprising the following steps:

[0045] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 4.5 h, take 100 g of the reaction solution and add 10 g of graphene oxide, continue stirring and reacting for 3 h to obtain composite modified graphene; wherein the molar ratio of amino groups and hexachlorocyclotriphosphazene in chitosan is 2:1, the mass of diethyl ether is 3 times the mass of chitosan, and the mass of pyridine is 0.5 times the mass of chitosan;

[0046] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, and soak for 1.5 hours using 17W / m 2 After irradiating with ultraviolet light for 20 minutes, rinsing and drying with deionized water, the product is immersed in 200g of thionyl chloride and reacted at 100℃ for 20 minutes. The product is then washed and dried to obtain modified acrylic fiber for later use.

[0047] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 70℃ for 4min to obtain graphene modified acrylic fiber.

[0048] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0049] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 13 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0050] Example 5: A process for preparing an antistatic compact spun mesh ring, comprising the following steps:

[0051] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 4 hours, take 100g of the reaction solution and add 10g of graphene oxide, continue stirring and reacting for 3 hours to obtain composite modified graphene; wherein the molar ratio of amino groups to hexachlorocyclotriphosphazene in chitosan is 2:1, the mass of diethyl ether is 3 times the mass of chitosan, and the mass of pyridine is 0.5 times the mass of chitosan;

[0052] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, and soak for 1.5 hours using 18W / m 2 After irradiating with ultraviolet light for 25 minutes, rinsing and drying with deionized water, the product was soaked in 200g of thionyl chloride and reacted at 100℃ for 25 minutes. The product was washed and dried to obtain modified acrylic fiber for later use.

[0053] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 75℃ for 4.5min to obtain graphene modified acrylic fiber.

[0054] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0055] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 14 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0056] Example 6: A process for preparing an antistatic compact spun mesh ring, comprising the following steps:

[0057] Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 4 hours, take 100g of the reaction solution and add 10g of graphene oxide, continue stirring and reacting for 3 hours to obtain composite modified graphene; wherein the molar ratio of amino groups to hexachlorocyclotriphosphazene in chitosan is 2:1, the mass of diethyl ether is 3 times the mass of chitosan, and the mass of pyridine is 0.5 times the mass of chitosan;

[0058] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, soak for 2 hours, using 20W / m 2 After being irradiated with ultraviolet light for 25 minutes, rinsed with deionized water and dried, the product was soaked in 200g of thionyl chloride and reacted at 115℃ for 20 minutes. The product was washed and dried to obtain modified acrylic fiber for later use.

[0059] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 85℃ for 4min to obtain graphene modified acrylic fiber.

[0060] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0061] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 15 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0062] Comparative Example 1: Antistatic tightly spun mesh rings were prepared by coating an antistatic agent onto the surface of the mesh ring using conventional methods.

[0063] Step 1: Chitosan quaternary ammonium salt modified acrylic fiber and nylon fiber are blended and spun together. The process of drawing, roving, sanding, and winding is used to obtain warp yarns with a diameter of 0.2 mm. The ply ratio of chitosan quaternary ammonium salt modified acrylic fiber to nylon fiber is 3:2. Chitosan quaternary ammonium salt modified acrylic fiber and polyester fiber are blended and spun together. The process of drawing, roving, sanding, and winding is used to obtain weft yarns with a diameter of 0.16 mm. The ply ratio of chitosan quaternary ammonium salt modified acrylic fiber to polyester fiber is 3:2.

[0064] Step 2: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. Finish with an antistatic agent, cut the mesh fabric and roll it into a loop. Seal the edges of the mesh loop, steam set for 10 minutes, and cool to obtain the mesh loop.

[0065] Comparative Example 2: The amount of chitosan in the composite modified graphene was increased, while the other parameters were the same as in Example 2.

[0066] Step 1: Mix 4 mol chitosan, 1 mol hexachlorocyclotriphosphazene, and 6 mol diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add 1.4 mol pyridine and mix to obtain a reaction solution; after reacting in an ice bath for 6 hours, add 10 g of graphene oxide to 100 g of the reaction solution, and continue stirring for 4 hours to obtain composite modified graphene.

[0067] Step 2: Take 100g of acrylic fiber, add 600g of acetone, 100g of benzophenone, and 300g of divinylbenzoic acid, soak for 2 hours, using 20W / m 2 After irradiating with ultraviolet light for 30 minutes, rinsing and drying with deionized water, the product was soaked in 200g of thionyl chloride and reacted at 120℃ for 45 minutes. The product was washed and dried to obtain modified acrylic fiber for later use.

[0068] Step 3: Disperse 15g of composite modified graphene in 500g of deionized water, add 200g of modified acrylic fiber and 10g of sodium bicarbonate, and react at 90℃ for 5min to obtain graphene modified acrylic fiber.

[0069] Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain warp yarns with a diameter of 0.2 mm, wherein the ply ratio of graphene-modified acrylic fiber to nylon fiber is 3:2; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and then processed through drawing, roving, sanding, and winding to obtain weft yarns with a diameter of 0.16 mm, wherein the ply ratio of graphene-modified acrylic fiber to polyester fiber is 3:2;

[0070] Step 5: Weave using a plain weave method with a warp-to-weft ratio of 3:2. The resulting mesh fabric has a warp-to-weft density of 96×128 and a thickness of 0.9mm. After cutting, roll the mesh fabric into loops. Seal the edges of the mesh loops, steam set for 15 minutes, and cool to obtain an antistatic, tightly spun mesh loop.

[0071] Experiment: Performance tests were conducted on the mesh rings in Examples 1-6 and Comparative Examples 1-2, respectively.

[0072] Referring to the method in GB / T12703.4-2010, the mesh fabrics in Examples 1-6 and Comparative Examples 1-2 were cut into rectangles of 5cm×1cm, and the surface resistivity and surface resistivity after soaking in 50℃ warm water for 72h were tested respectively.

[0073] To test the limiting oxygen index of a sample, the sample is placed vertically into a transparent combustion chamber with an upward-moving oxygen-nitrogen gas flow inside. The sample end is ignited, and the combustion phenomenon is observed. The duration of combustion or the length of damage is compared with the specified limiting value. Through experiments with a series of samples at different oxygen concentrations, the lower oxygen concentration value required for combustion can be maintained.

[0074] The experimental results are shown in the table below.

[0075]

[0076] Conclusion: Data from Examples 1-6 show that the antistatic tightly spun mesh rings prepared by the present invention have low surface resistivity and exhibit good antistatic and flame-retardant properties in practical applications.

[0077] Comparative Example 1 data shows that the antistatic properties of the mesh ring are good after treatment with conventional antistatic agents, but the antistatic properties decrease after soaking; while after soaking in water, the antistatic effect of Example 1 hardly changes.

[0078] The data from Comparative Example 2 show that when the amount of chitosan increases, due to the steric hindrance effect, the reaction product of chitosan and hexachlorocyclotriphosphazene is difficult to modify graphene oxide. Therefore, in Comparative Example 2, graphene oxide mainly reacts directly with the acyl chloride groups on the surface of the modified acrylic fiber. Compared with Example 2, the flame retardant properties of the mesh ring prepared in Comparative Example 2 are poor.

[0079] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A process for preparing an antistatic tightly spun mesh ring, characterized in that: Includes the following steps: Step 1: Mix chitosan, hexachlorocyclotriphosphazene, and diethyl ether, add dilute hydrochloric acid until the chitosan is completely dissolved, add pyridine and mix to obtain a reaction solution; after ice bath reaction, add graphene oxide and continue stirring to obtain composite modified graphene; Step 2: Take acrylic fiber, soak it in a solution of acetone, benzophenone and divinylbenzoic acid, irradiate it with ultraviolet light, rinse it with deionized water and dry it, then soak it in thionyl chloride, react, wash and dry it to obtain modified acrylic fiber. Step 3: Disperse the composite modified graphene in a deionized aqueous solution, add modified acrylic fiber and sodium bicarbonate, react to obtain graphene modified acrylic fiber; Step 4: Graphene-modified acrylic fiber and nylon fiber are blended and spun together, and warp yarns are obtained through drawing, roving, spinning and winding processes; graphene-modified acrylic fiber and polyester fiber are blended and spun together, and weft yarns are obtained through drawing, roving, spinning and winding processes. Step 5: Weave the mesh fabric using a plain weave method; cut the mesh fabric and roll it into loops; seal the edges of the mesh loops, steam set the shape, and cool to obtain an antistatic, tightly spun mesh loop; In step 1, the molar ratio of amino groups and hexachlorocyclotriphosphazene in chitosan is (1-2):

1.

2. The preparation process of an antistatic tightly spun mesh ring according to claim 1, characterized in that: In step 1, the preparation conditions for the composite modified graphene are as follows: after reacting the mixed solution in an ice bath for 4 to 6 hours, graphene oxide is added and the reaction is continued with stirring for 3 to 4 hours.

3. The preparation process of an antistatic tightly spun mesh ring according to claim 1, characterized in that: In step 3, the preparation conditions for graphene-modified acrylic fibers are a reaction at 60–90°C for 3–5 min.

4. The preparation process of an antistatic tightly spun mesh ring according to claim 1, characterized in that: In step 4, the ply ratio of graphene-modified acrylic fiber to nylon fiber in the warp yarn is (2-3):(1-2).

5. The preparation process of an antistatic tightly spun mesh ring according to claim 1, characterized in that: In step 4, the diameter of the warp wire is 0.2 to 0.24 mm.

6. The preparation process of an antistatic tightly spun mesh ring according to claim 1, characterized in that: In step 4, the ratio of graphene-modified acrylic fiber to polyester fiber in the weft yarn is (3-4):(1-2).

7. The preparation process of an antistatic tightly spun mesh ring according to claim 1, characterized in that: The diameter of the weft yarn is 0.14–0.18 mm.

8. The antistatic compact spun mesh ring prepared by any one of the preparation processes of antistatic compact spun mesh rings according to any one of claims 1 to 7.

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