Anti-slip protective glove and method for manufacturing the same

Abstract

To provide an anti-slip protective glove and a method for manufacturing the same.SOLUTION: A method comprises the steps of: attaching a woven glove to a hand mold, spraying a waterproof material on the surface of the glove and curing the same to obtain a woven glove with a waterproof layer; putting the woven glove with a waterproof layer in a container containing polyvinyl chloride latex for dip coating, and after completing the dip coating, heating and drying it to form a coating film on the surface of the woven glove with a waterproof layer; dipping nitrile rubber particles and silicon carbide ceramic in a sodium carboxymethyl cellulose solution, stirring, filtering and drying the solution, adding the solution to a mixture of an aqueous polyurethane prepolymer, a chain extender and polyvinyl chloride, stirring the mixture uniformly, and then adding xanthan gum and a crosslinking monomer and stirring the mixture to obtain an anti-slip, abrasion-resistant coating dispersion emulsion; and putting the woven glove with a waterproof layer on which the coating film is formed in the anti-slip, abrasion-resistant coating dispersion emulsion for dip coating, and after completing the dip coating, putting the glove in a drying oven to plasticize at high temperature, and cooling the glove to obtain an anti-slip protective glove.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to the technical field of protective glove manufacturing, and more particularly to anti-slip protective gloves and methods for manufacturing the same. [Background technology]

[0002] Gloves are the most basic and commonly used occupational protective equipment in people's daily work and manufacturing activities, and are traditionally manufactured by cutting and sewing various types of leather, knitted fabric, or woven fabric. Protective gloves are usually used in special work environments where high friction or roughened surface gloves are required to protect workers' hands, such as coal mining, steel, and construction material handling. Roughened surface gloves currently available on the market are mainly made of latex, nitrile, or PVC.

[0003] For example, Chinese Patent Application No. 201910073525.0 (Patent Document 1) discloses abrasion-resistant, non-slip latex gloves and a method for making the same. Patent Document 1 discloses adding anti-slip agents, primarily inorganic materials such as organic montmorillonite, carbon fiber, lignin, carbon black, silica, mica powder, and nano-calcium carbonate, to gloves to enhance their abrasion resistance. It also discloses controlling the particles of these inorganic materials to nano-levels to facilitate better dispersion in latex. Because these nano-level inorganic particles are easily dispersed in latex, gloves made using this method lack a noticeable pattern on the surface. Therefore, to improve the anti-slip properties of gloves, the invention in Patent Document 1 employs a technical method of spraying rubber particles and ceramic powder solid particles onto the surface of the latex liquid. The larger rubber particles increase the friction between the hand and the object, improving the anti-slip properties of latex gloves. Ceramic powder has high hardness and good abrasion resistance, and by spraying ceramic powder onto latex gloves, the abrasion resistance and anti-slip properties of the latex gloves can be improved.

[0004] The anti-slip particles formed by the above technical means are adhered to the latex, but the adhesive strength between the latex and the anti-slip particles is not strong, and the anti-slip particles such as ceramic powder and rubber particles easily peel off, resulting in low wear resistance and a short service life of the protective gloves. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Chinese Patent Application No. 201910073525.0 Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem that the present invention aims to solve is that spraying rubber particles and ceramic powder solid particles onto the surface of a latex liquid increases the friction between the hand and an object, improving the anti-slip properties of the glove, but the adhesive strength between the rubber particles and ceramic powder and the latex layer is weak, resulting in the ceramic powder and rubber particles easily peeling off.

[0007] The present invention provides an anti-slip protective glove and a method for manufacturing the same. Specifically, sodium carboxymethylcellulose adheres to the surfaces of nitrile rubber particles and silicon carbide ceramic to form a flexible protective film, thereby preventing the large, hard silicon carbide particles from destroying the polyurethane abrasion-resistant coating and reducing the abrasion resistance of the glove. Furthermore, by adding xanthan gum and a cross-linking monomer to the anti-slip abrasion-resistant coating dispersion emulsion, the xanthan gum aligns along the polyurethane molecular chain, providing the polyurethane abrasion-resistant coating with more polar hydroxyl and carboxyl groups, which increases the bonding strength between the nitrile rubber particles and silicon carbide ceramic, resulting in better friction and anti-slip properties. In addition, dicyandiamide and adiponitrile react to form a cross-linking monomer, and the cross-linking monomer cross-links with the aqueous polyurethane prepolymer to form a polar urea bond. The polar urea bond chemically bonds with the polar functional groups on the surfaces of the nitrile rubber particles and silicon carbide ceramic, thereby allowing the nitrile rubber particles and silicon carbide ceramic to be better embedded in the surface of the abrasion-resistant coating, forming an abrasion-resistant coating with a distinct pattern on the surface of the glove. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides the following technical means.

[0009] A method for making an anti-slip protective glove, comprising the steps of:

[0010] Step S1: A woven glove is attached to a hand mold, and a waterproof material is sprayed onto the surface and cured to obtain a woven glove with a waterproof layer.

[0011] Step S2: The waterproof fabric gloves are placed in a container containing polyvinyl chloride latex and immersed for 1 to 2 minutes.

[0012] Step S3: After the dip coating is completed, the waterproof fabric gloves are taken out and heated and dried to form a latex coating film on the surface.

[0013] Step S4: The nitrile rubber particles and silicon carbide ceramic are immersed in a sodium carboxymethyl cellulose solution, stirred, filtered and dried, and then added to a mixture of aqueous polyurethane prepolymer, chain extender and polyvinyl chloride. After uniform stirring, xanthan gum and crosslinking monomer are added and stirred to obtain an anti-slip, abrasion-resistant coating dispersion emulsion.

[0014] Here, sodium carboxymethyl cellulose contains many carboxymethyl groups in its molecular structure, exhibits excellent adhesive properties, and adheres to the surfaces of nitrile rubber particles and silicon carbide ceramic, thereby imparting adhesive properties and polar functional groups to the nitrile rubber particles and silicon carbide ceramic.

[0015] Furthermore, the isocyanate groups in the aqueous polyurethane prepolymer react with the chain extender 1,4-butanediol and two amino groups in the crosslinking monomer to form polar urea bonds, forming a denser crosslinked network structure that uniformly embeds the nitrile rubber particles and silicon carbide ceramic in the aqueous polyurethane system. Furthermore, xanthan gum aligns itself along the polyurethane molecular chain, providing more polar hydroxyl and carboxyl groups, which increases the bonding strength between the nitrile rubber particles and silicon carbide ceramic.

[0016] Step S5: The waterproof fabric gloves on which the coating film is formed are immersed in the anti-slip and abrasion-resistant coating dispersion emulsion for 1 to 2 minutes.

[0017] Step S6: After the dip coating is completed, the gloves are taken out and placed in a drying oven for 15 to 20 minutes to be plasticized at high temperature, and then cooled to obtain anti-slip protective gloves.

[0018] Furthermore, the thickness of the waterproof layer is 0.1-0.3 mm, the thickness of the latex coating film is 0.2-0.4 mm, and the thickness of the anti-slip and wear-resistant layer is 0.3-0.5 mm.

[0019] More preferably, the thickness of the waterproof layer is 0.2 mm, the thickness of the latex coating film is 0.3 mm, and the thickness of the anti-slip and wear-resistant layer is 0.4 mm.

[0020] Furthermore, the curing temperature is 30 to 40°C, and the curing time is 10 to 15 minutes.

[0021] More preferably, the curing temperature is 35° C. and the curing time is 13 minutes.

[0022] Furthermore, the temperature for plasticizing at high temperature is 150 to 200°C, and the time for plasticizing at high temperature is 15 to 20 minutes.

[0023] More preferably, the high temperature plasticization temperature is 160° C. and the high temperature plasticization time is 18 minutes.

[0024] Furthermore, the waterproofing material is obtained by mixing and stirring the water-based epoxy resin, the plasticizer, the functional filler, the leveling agent, the anti-settling agent, and the deionized water.

[0025] Furthermore, the mass ratio of the aqueous epoxy resin, plasticizer, functional filler, leveling agent, anti-settling agent, and deionized water is 45-55:1-2:1.1-1.3:0.5-0.9:1.2-1.4:50-70.

[0026] Furthermore, the aqueous epoxy resin is selected from aqueous epoxy resin CYDW-100 having an epoxy equivalent of 170-220.

[0027] Further, the plasticizer is selected from any one of the plasticizers DIDP, DBP, and paraffin.

[0028] Additionally, the anti-settling agent is selected from any one of castor oil, sebacic acid, and polyethylene wax.

[0029] Furthermore, the functional filler is selected from any one of mica powder, talc powder, and quartz powder.

[0030] Furthermore, the leveling agent is selected from any one of polydimethylsiloxane, polymethylhydrosiloxane, and polyphenylmethylsiloxane.

[0031] Furthermore, polyvinyl chloride latex is obtained by mixing polyvinyl chloride, an accelerator, dibutyl adipate, and ethyl acetate in a mass ratio of 70-90:0.5-1.5:5-7:30-50.

[0032] Further, the accelerator is selected from accelerator CZ or accelerator NS.

[0033] Furthermore, the nitrile rubber particles are specifically obtained by crushing the nitrile rubber in a crusher to form lumps, putting the lumps into a grinder to grind them into powder, and sieving them.

[0034] Furthermore, the particle size of the nitrile rubber particles and silicon carbide ceramic is 0.15 to 0.18 mm.

[0035] Furthermore, the mass ratio of the nitrile particles to the ceramic material is 0.5-1.5:1.5-2.5.

[0036] Furthermore, the sodium carboxymethylcellulose solution is obtained by mixing sodium carboxymethylcellulose and deionized water in a mass ratio of 1.2-1.3:45-55.

[0037] Furthermore, the aqueous polyurethane prepolymer can be specifically obtained by mixing a 2 mol / L polycarbonate diol solution, dimethylol butanoic acid, toluene diisocyanate, and dibutyltin dilaurate, stirring uniformly, and then heating the mixture to 70°C and reacting it with stirring for 3 hours.

[0038] Here, when dibutyltin dilaurate is used as a catalyst, polycarbonate diol is used as the polyol, and dimethylolbutanoic acid is used as the hydrophilic monomer, and they react with the isocyanate group of toluene diisocyanate at 70°C to form an aqueous polyurethane prepolymer.

[0039] Furthermore, the mass ratio of polycarbonate diol, dimethylol butanoic acid, toluene diisocyanate, and dibutyltin dilaurate is 6-7:3-3.1:0.03-0.07.

[0040] Furthermore, the crosslinking monomer is produced by reacting dicyandiamide with adiponitrile. Specifically, dicyandiamide, potassium hydroxide, and 2-methoxyethanol are mixed and stirred at 200 rpm for 10 minutes, a 99% by mass adiponitrile solution is added, the temperature is raised to 125°C, and the reaction is carried out with stirring for 6 hours. After cooling to room temperature, the mixture is filtered to obtain a solid. The solid is washed three times with 72% by mass methanol, washed twice with deionized water, and dried in a drying oven at 80°C for 2 hours.

[0041] Here, potassium hydroxide acts as a catalyst in the organic solvent 2-methoxyethanol, and the two cyano groups of adiponitrile react with dicyandiamide at 125°C to form a crosslinking monomer with two triazine ring structures that carry two amino groups as crosslinking reaction sites for the aqueous polyurethane.

[0042] Furthermore, the compounding ratio of dicyandiamide, potassium hydroxide, 2-methoxyethanol, and adiponitrile solution is 4-6 g: 1-2 g: 45-55 mL: 2.5-2.9 mL. [Effects of the Invention]

[0043] The present invention has the following advantageous effects compared to the prior art.

[0044] (1) In the technical solution of the present invention, sodium carboxymethyl cellulose adheres to the surfaces of nitrile rubber particles and silicon carbide ceramic to form a flexible protective film, preventing the large particles of silicon carbide ceramic, which has high hardness, from destroying the polyurethane abrasion-resistant coating and reducing the abrasion resistance of the glove. Furthermore, sodium carboxymethyl cellulose provides a large number of polar groups, which increases the crosslink density of the polyurethane coating and increases the mechanical strength of the polyurethane abrasion-resistant coating. Furthermore, sodium carboxymethyl cellulose provides adhesive and polar functional groups to the nitrile rubber particles and silicon carbide ceramic, which increases the adhesion between the nitrile rubber particles and silicon carbide ceramic on the surface of the glove.

[0045] (2) In the technical solution of the present invention, the crosslinking monomer formed by the reaction of dicyandiamide and adiponitrile crosslinks with the aqueous polyurethane prepolymer, forming a denser crosslinked network structure on the glove surface. This allows the external forces generated during friction of the glove to be transmitted to other molecular chains via the crosslinked structure, preventing severe abrasion and peeling due to localized stress concentrations. Furthermore, the polar urea bonds formed by the crosslinking reaction chemically bond with polar functional groups on the surfaces of the nitrile rubber particles and silicon carbide ceramic, thereby better embedding the nitrile rubber particles and silicon carbide ceramic in the abrasion-resistant coating, forming a distinctly patterned abrasion-resistant coating on the glove surface and improving the abrasion resistance of the glove. Furthermore, the triazine rings in the crosslinking monomer increase the rigidity and hardness of the molecular chains, further enhancing the mechanical properties of the polyurethane abrasion-resistant coating.

[0046] (3) In the technical solution of the present invention, xanthan gum is arranged along the polyurethane molecular chain, providing more polar hydroxyl and carboxyl groups in the polyurethane abrasion-resistant coating, increasing the bonding strength between the nitrile rubber particles and the silicon carbide ceramic, thereby providing good friction and anti-slip properties. Furthermore, when an anti-slip abrasion-resistant coating dispersion emulsion containing nitrile rubber particles and silicon carbide ceramic is applied to a composite latex layer and plasticized at a high temperature of 140-170°C, the polyvinyl chloride latex becomes molten and its excellent adhesive properties allow the nitrile rubber particles and silicon carbide ceramic to adhere to the polyvinyl chloride latex layer, further improving the adhesive strength between the nitrile particles and silicon carbide ceramic and the composite latex layer. After cooling, the composite abrasion-resistant filler is uniformly dispersed in the composite latex layer glove, providing good friction and anti-slip properties. DETAILED DESCRIPTION OF THE INVENTION

[0047] The technical means in the embodiments of the present invention are clearly and completely described. It is clear that the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

[0048] The raw materials used in the examples of the present invention are dicyandiamide, 2-methoxyethanol, adiponitrile, 1,4-butanediol (purity 99%, manufactured by Shanghai Huayi Energy Chemical Co., Ltd.), potassium hydroxide, dibutyltin dilaurate (analytical purity AR, manufactured by Tianjin Kemiou Chemical Reagents Co., Ltd.), polycarbonate diol (purity 99.5%, manufactured by Jining Baichuan Chemical Co., Ltd.), dimethylol butanoic acid (purity 98%, manufactured by Shanghai Huayi Energy Chemical Co., Ltd.), toluene diisocyanate (manufactured by Shanghai Aladdin Biochemical Technology Co., Ltd., purity 98%), polyvinyl chloride (K value 72, purchased from Guangzhou Kelvin Biotechnology Co., Ltd.), and xanthan gum. The solvents used were methyl methyl siloxane (USP grade, manufactured by Shanghai McKinley Biochemical Co., Ltd.), polyphenylmethylsiloxane (product number 63148-58-3, viscosity 20 mPa s), polyethylene wax (product number 9002-88-4, purity 98%), dibutyl adipate (product number 105-99-7, purity 96%), ethyl acetate (product number 141-78-6, purity 99%), castor oil (product number 8001-79-4, purity 99%), polydimethylsiloxane (product number 9016-00-6, purchased from Shanghai Dingfen Chemical Technology Co., Ltd.), polymethylhydrosiloxane (product number 63148-57-2, purity 98%), and sebacic acid (product number 111-20-6, purity 99%). [Example]

[0049] Example 1 Specifically, the cross-linked monomer was prepared by the following steps.

[0050] In a 100 mL three-neck flask equipped with a stirrer, a condenser, and a thermometer, 5 g of dicyandiamide, 1.5 g of potassium hydroxide, and 50 mL of 2-methoxyethanol were mixed and stirred at 200 rpm for 10 minutes, and 2.7 mL of a 99% mass fraction adiponitrile solution was added. The mixture was heated to 125°C and reacted with stirring for 6 hours. After cooling to room temperature, the mixture was filtered to obtain a solid. The solid was washed three times with 72% mass fraction methanol and twice with deionized water, and then dried in a drying oven at 80°C for 2 hours to obtain a crosslinked monomer.

[0051] Example 2 Specifically, the anti-slip and abrasion-resistant coating dispersion emulsion was prepared by the following steps.

[0052] A1: 6.5 g of a 2 mol / L polycarbonate diol solution, 3.06 g of dimethylol butanoic acid, 8.5 g of toluene diisocyanate, and 0.05 g of dibutyltin dilaurate were mixed and stirred uniformly, and then the temperature was raised to 70°C and the mixture was reacted with stirring for 3 hours to obtain an aqueous polyurethane prepolymer.

[0053] A2: Nitrile rubber was crushed in a crusher to form lumps, which were then put into a grinder to be ground into powder, and passed through an 80-mesh sieve to obtain nitrile rubber particles.

[0054] A3: 1.25 g of sodium carboxymethylcellulose was mixed with 50 mL of deionized water and stirred until completely dissolved to obtain a sodium carboxymethylcellulose solution. 1 g of nitrile rubber particles and 2 g of silicon carbide ceramic were immersed in 20 mL of the sodium carboxymethylcellulose solution, stirred, filtered, and dried in a drying oven at 60°C for 10 minutes. The solution was then added to a mixture of 50 g of aqueous polyurethane prepolymer, 2.5 g of 1,4-butanediol, and 15 g of polyvinyl chloride and stirred uniformly. 2.3 g of xanthan gum and 1.7 g of the crosslinking monomer prepared in Example 1 were added and stirred at 80°C for 30 minutes to obtain an anti-slip, abrasion-resistant coating dispersion emulsion. The particle sizes of the nitrile rubber particles and silicon carbide ceramic were 0.15 to 0.18 mm.

[0055] Comparative Example 1 This comparative example differs from Example 2 in that no crosslinking monomer was added, but the other steps and raw materials were the same as those of Example 2.

[0056] Comparative Example 2 This comparative example differs from Example 2 in that no carboxymethylcellulose sodium solution was added, but the other steps and raw materials were the same as those of Example 2.

[0057] Comparative Example 3 This comparative example differs from Example 2 in that xanthan gum was not added, but the other steps and raw materials were the same as those of Example 2.

[0058] Comparative Example 4 This comparative example differs from Example 2 in that nitrile rubber particles and silicon carbide ceramic were not added, but the other steps and raw materials were the same as those of Example 2.

[0059] Example 3 A method for making an anti-slip protective glove, comprising the steps of:

[0060] Step 1: 50 g of aqueous epoxy resin CYDW-100, 1.5 g of paraffin, 1.2 g of quartz powder, 0.7 g of polyphenylmethylsiloxane, 1.3 g of polyethylene wax, and 60 g of deionized water were mixed and stirred to obtain a waterproof material. A woven glove was attached to a hand mold, and the waterproof material was sprayed onto the surface. After curing at 35°C for 13 minutes, a woven glove with a waterproof layer having a thickness of 0.2 mm was obtained.

[0061] Step 2: 80 g of polyvinyl chloride, 1 g of accelerator NS, 6 g of dibutyl adipate, and 40 g of ethyl acetate were mixed and stirred to obtain polyvinyl chloride latex. The waterproof woven gloves were placed in a container containing the polyvinyl chloride latex and immersed in the latex for 1 to 2 minutes.

[0062] Step 3: After the dip coating was completed, the waterproof fabric gloves were taken out and heated and dried to form a latex coating film on the surface.

[0063] Step 4: The waterproof fabric gloves on which the coating film was formed were immersed in the anti-slip, abrasion-resistant coating dispersion emulsion prepared in Example 2 for 1 to 2 minutes.

[0064] Step 5: After the dip coating is completed, the gloves are removed and placed in a drying oven for plasticization at high temperature for 15 to 20 minutes, and then cooled to obtain anti-slip protective gloves.The thickness of the waterproof layer of the anti-slip protective gloves is 0.2 mm, the thickness of the latex coating film is 0.3 mm, and the thickness of the anti-slip abrasion-resistant layer is 0.4 mm.

[0065] Example 4 A method for making an anti-slip protective glove, comprising the steps of:

[0066] Step 1: 50g of water-based epoxy resin CYDW-100, 1.5g of plasticizer DIDP, 1.2g of mica powder, 0.7g of polydimethylsiloxane, 1.3g of castor oil, and 60g of deionized water were mixed and stirred to obtain a waterproof material, and a woven glove was attached to a hand mold and the waterproof material was sprayed onto the surface. After curing at 35°C for 13 minutes, a woven glove with a waterproof layer was obtained.

[0067] Step 2: 80 g of polyvinyl chloride, 1 g of accelerator CZ, 6 g of dibutyl adipate, and 40 g of ethyl acetate were mixed and stirred to obtain polyvinyl chloride latex. The waterproof woven gloves were placed in a container containing the polyvinyl chloride latex and immersed in the latex for 1 to 2 minutes.

[0068] Step 3: After the dip coating was completed, the waterproof fabric gloves were taken out and heated and dried to form a latex coating film on the surface.

[0069] Step 4: The waterproof fabric gloves on which the coating film was formed were immersed in the anti-slip, abrasion-resistant coating dispersion emulsion prepared in Example 2 for 1 to 2 minutes.

[0070] Step 5: After the dip coating is completed, the gloves are removed and placed in a drying oven for plasticization at high temperature for 15 to 20 minutes, and then cooled to obtain anti-slip protective gloves.The thickness of the waterproof layer of the anti-slip protective gloves is 0.2 mm, the thickness of the latex coating film is 0.3 mm, and the thickness of the anti-slip abrasion-resistant layer is 0.4 mm.

[0071] Example 5 A method for making an anti-slip protective glove, comprising the steps of:

[0072] Step 1: 50g of water-based epoxy resin CYDW-100, 1.5g of plasticizer DBP, 1.2g of talc powder, 0.7g of polymethylhydrosiloxane, 1.3g of sebacic acid, and 60g of deionized water were mixed and stirred to obtain a waterproof material. A woven glove was attached to a hand mold, and the waterproof material was sprayed onto the surface. After curing at 35°C for 13 minutes, a woven glove with a waterproof layer was obtained.

[0073] Step 2: 80 g of polyvinyl chloride, 1 g of accelerator NS, 6 g of dibutyl adipate, and 40 g of ethyl acetate were mixed and stirred to obtain polyvinyl chloride latex. The waterproof woven gloves were placed in a container containing the polyvinyl chloride latex and immersed in the latex for 1 to 2 minutes.

[0074] Step 3: After the dip coating was completed, the waterproof fabric gloves were taken out and heated and dried to form a latex coating film on the surface.

[0075] Step 4: The waterproof fabric gloves on which the coating film was formed were immersed in the anti-slip, abrasion-resistant coating dispersion emulsion prepared in Example 2 for 1 to 2 minutes.

[0076] Step 5: After the dip coating is completed, the gloves are removed and placed in a drying oven for plasticization at high temperature for 15 to 20 minutes, and then cooled to obtain anti-slip protective gloves.The thickness of the waterproof layer of the anti-slip protective gloves is 0.2 mm, the thickness of the latex coating film is 0.3 mm, and the thickness of the anti-slip abrasion-resistant layer is 0.4 mm.

[0077] Comparative Example 5 This comparative example differs from Example 3 in that the anti-slip and abrasion-resistant coating dispersion emulsion was replaced with that prepared in Comparative Example 1, but the other steps and raw materials were the same as those in Example 3.

[0078] Comparative Example 6 This comparative example differs from Example 3 in that the anti-slip and abrasion-resistant coating dispersion emulsion was replaced with that prepared in Comparative Example 2, but the other steps and raw materials were the same as those in Example 3.

[0079] Comparative Example 7 This comparative example differs from Example 3 in that the anti-slip and abrasion-resistant coating dispersion emulsion was replaced with that prepared in Comparative Example 3; other steps and raw materials were the same as those in Example 3.

[0080] Comparative Example 8 This comparative example differs from Example 3 in that the anti-slip and abrasion-resistant coating dispersion emulsion was replaced with that prepared in Comparative Example 4, but the other steps and raw materials were the same as those in Example 3.

[0081] Next, the anti-slip protective gloves produced in Examples 3 to 5 and Comparative Examples 5 to 8 were subjected to property tests.

[0082] Anti-slip evaluation: Ten subjects wore the anti-slip protective gloves prepared above and rated the feel of the gloves when gripping a steel rod (35 mm diameter, 200 mm length) covered in cutting oil using the following five-point scale. A: Very strong grip, no slippage. B: Strong grip, basically no slippage. C: Somewhat strong grip, not slippery. D: Low grip, smooth. E: No grip, slippery. Comfort and flexibility were then evaluated.

[0083] Abrasion Resistance Test: The anti-slip protective gloves prepared above were tested for abrasion resistance in accordance with GB / T24541-2009 "Protective Gloves for Hand Protection and Protection Against Mechanical Hazards" standard. The anti-slip protective gloves prepared above were placed in an abrasion resistance tester, the grinding head frequency was adjusted to 60 times per minute, and the abrasion resistance tester was started. The abrasion resistance test was carried out for 2.5 hours, and the weight of the worn gloves was measured to calculate the amount of wear. The test results are shown in Table 1 below.

[0084] [Table 1]

[0085] As can be seen from the data in Table 1, the woven glove of Comparative Example 5, which was sprayed with an anti-slip, abrasion-resistant coating dispersion emulsion prepared without the addition of a crosslinking monomer, exhibited reduced abrasion resistance. This is believed to be because the polar urea bonds formed by the crosslinking reaction of the crosslinking monomer chemically bonded with the polar functional groups on the surfaces of the nitrile rubber particles and silicon carbide ceramic, thereby better embedding the nitrile rubber particles and silicon carbide ceramic in the abrasion-resistant coating. The woven glove of Comparative Example 6, which was sprayed with an anti-slip, abrasion-resistant coating dispersion emulsion prepared without the addition of a carboxymethylcellulose sodium solution, exhibited reduced abrasion resistance. This is believed to be because the sodium carboxymethylcellulose adhered to the surfaces of the nitrile rubber particles and silicon carbide ceramic, forming a flexible protective film, preventing the large, hard silicon carbide ceramic particles from destroying the polyurethane abrasion-resistant coating and reducing the abrasion resistance of the glove. The woven glove of Comparative Example 7, which was sprayed with an anti-slip, abrasion-resistant coating dispersion emulsion prepared without the addition of xanthan gum, exhibited reduced abrasion resistance. This is thought to be because xanthan gum aligns along the polyurethane molecular chain, providing more polar hydroxyl and carboxyl groups in the polyurethane abrasion-resistant coating, increasing the bonding strength with the nitrile rubber particles and silicon carbide ceramic, and providing good friction and anti-slip properties. The woven glove of Comparative Example 8, which was sprayed with an anti-slip abrasion-resistant coating dispersion emulsion without nitrile rubber particles or silicon carbide ceramic, showed decreased abrasion resistance. This is thought to be because the nitrile rubber particles and silicon carbide ceramic formed an abrasion-resistant coating with a distinct pattern on the glove surface, improving the abrasion resistance of the glove.

[0086] From the data in Table 1, it can be seen that the anti-slip protective gloves prepared in Examples 3 to 5 not only have excellent abrasion resistance and anti-slip properties, but also that the nitrile rubber particles and silicon carbide ceramic have strong bonding strength on the surface of the gloves, forming an abrasion-resistant coating with a distinct pattern. The woven gloves are placed on a hand mold, and a waterproofing agent is sprayed onto the surface of the woven gloves and cured to obtain woven gloves with a waterproof layer. The woven gloves are then placed in a container containing polyvinyl chloride latex and dip-coated. After dip-coating is complete, the woven gloves with a waterproof layer are removed and heated and dried to form a coating film on their surfaces. Alternatively, nitrile rubber particles and silicon carbide ceramic are immersed in a sodium carboxymethyl cellulose solution, stirred, filtered, and dried, and added to a mixture of aqueous polyurethane prepolymer, chain extender, and polyvinyl chloride. The mixture is stirred uniformly, and then xanthan gum and a crosslinking monomer are added and stirred to obtain an anti-slip, abrasion-resistant coating dispersion emulsion. The woven gloves with a waterproof layer on which the coating film has been formed are placed in the anti-slip, abrasion-resistant coating dispersion emulsion and dip-coated. After dip-coating is complete, the gloves are removed and placed in a drying oven to plasticize at high temperature and cool. The obtained anti-slip protective gloves meet the test property requirements, while the anti-slip protective gloves prepared in Comparative Examples 5 to 8 do not meet the property requirements. This indicates that the anti-slip protective gloves prepared according to the present invention not only have excellent abrasion resistance and anti-slip properties, but also that the nitrile rubber particles and silicon carbide ceramic have strong bonding strength on the surface of the gloves, forming an abrasion-resistant coating with a distinct pattern.

[0087] In the description herein, the use of terms such as "one embodiment," "example," or "specific example" means that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In the description herein, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific feature, structure, material, or characteristic may be combined in any suitable manner in any one or more of the embodiments or examples.

[0088] The above contents are merely examples and illustrations of the present invention, and those skilled in the art may make various modifications or additions to the specific embodiments described, or adopt similar substitutions, which shall fall within the protection scope of the present invention as long as they do not deviate from the present invention or exceed the scope defined in the claims of the present invention.

Claims

1. 1. A method for making a non-slip protective glove, comprising: A step S1 of attaching a woven glove to a hand mold, spraying a waterproof material onto the surface of the glove, and hardening the material to obtain a woven glove with a waterproof layer; A step S2 in which the waterproof layer-attached textile gloves are placed in a container containing polyvinyl chloride latex and immersed therein for 1 to 2 minutes; After the immersion coating is completed, the waterproof layer-attached woven glove is taken out and heated and dried to form a coating film on the surface of the waterproof layer-attached woven glove in step S3; Nitrile rubber particles and silicon carbide ceramic are immersed in a sodium carboxymethyl cellulose solution, stirred, filtered and dried, and then added to a mixture of aqueous polyurethane prepolymer, chain extender and polyvinyl chloride. After uniform stirring, xanthan gum and crosslinking monomer are further added and stirred to obtain an anti-slip and abrasion-resistant coating dispersion emulsion. The nitrile rubber particles are obtained by crushing nitrile rubber in a crusher to form lumps, putting the lumps into a grinder to grind them into powder, and sieving the lumps; The particle diameter of the nitrile rubber particles and silicon carbide ceramic is 0.15 to 0.18 mm, The mass ratio of the nitrile rubber particles to the ceramic material is 0.5-1.5:1.5-2.5; The sodium carboxymethyl cellulose solution is obtained by mixing sodium carboxymethyl cellulose and deionized water in a mass ratio of 1.2 to 1.3:45 to 55; The crosslinking monomer was obtained by mixing dicyandiamide, potassium hydroxide, and 2-methoxyethanol, stirring at 200 rpm for 10 minutes, adding a 99% by mass adiponitrile solution, heating the mixture to 125°C, and reacting with stirring for 6 hours, cooling to room temperature, filtering to obtain a solid, washing the solid three times with 72% by mass methanol and twice with deionized water, and drying in a drying oven at 80°C for 2 hours. a step S4 in which the blending ratio of the dicyandiamide, potassium hydroxide, 2-methoxyethanol, and adiponitrile solution is 4 to 6 g: 1 to 2 g: 45 to 55 mL: 2.5 to 2.9 mL; A step S5 of immersing the waterproof fabric glove on which the coating film is formed into the anti-slip and abrasion-resistant coating dispersion emulsion for 1 to 2 minutes; After the dip coating is completed, the gloves are taken out and placed in a drying oven for 15 to 20 minutes to be plasticized at high temperature, and then cooled to obtain a non-slip protective glove (step S6); A method for producing an anti-slip protective glove, comprising:

2. 2. The method for preparing anti-slip protective gloves according to claim 1, wherein the waterproof material is obtained by mixing and stirring an aqueous epoxy resin, a plasticizer, a functional filler, a leveling agent, an anti-settling agent and deionized water.

3. 3. The method for producing an anti-slip protective glove according to claim 2, wherein the anti-settling agent is selected from one of castor oil, sebacic acid, and polyethylene wax, and the plasticizer is selected from one of plasticizer DIDP, plasticizer DBP, and paraffin.

4. 3. The method for producing an anti-slip protective glove according to claim 2, wherein the functional filler is selected from any one of mica powder, talc powder, and quartz powder, and the leveling agent is selected from any one of polydimethylsiloxane, polymethylhydrosiloxane, and polyphenylmethylsiloxane.

5. The method for preparing an anti-slip protective glove according to claim 1, characterized in that the polyvinyl chloride latex is obtained by mixing polyvinyl chloride, an accelerator, dibutyl adipate, and ethyl acetate in a mass ratio of 70-90:0.5-1.5:5-7:30-50, and the accelerator is selected from accelerator CZ or accelerator NS.

6. An anti-slip protective glove produced by the method of any one of claims 1 to 5.

Images