Oil-resistant Anti-slip protective gloves and preparation method therefor

Abstract

Disclosed are oil-resistant anti-slip protective gloves and a preparation method therefor. In the present invention, environmentally friendly waterborne polyurethane and a polyvinyl chloride latex are compounded, wherein the waterborne polyurethane is different from a traditional oily polyurethane and is free from a DMF(N,N-dimethylformamide) solvent, the production process is pollution-free, the polyvinyl chloride latex is also different from a traditional polyvinyl chloride resin, and without the need for an oily plasticizer as a main plasticizing material, the problem of the polyvinyl chloride oleoresin and the waterborne polyurethane being incompatible is solved; the waterborne polyurethane and the polyvinyl chloride latex are compounded at a ratio, and a crosslinking coupling agent is added for a crosslinking reaction with the two materials at a high temperature, thereby improving the mechanical property of the product; in addition, butyronitrile particles and a ceramic powder are combined during the formulation of an anti-slip wear-resistant coating, and thus the protruding particles on the surface of the anti-slip wear-resistant coating are not completely melted at a high temperature, and the protruding anti-slip points can be well combined with the resin, and have a good toughness and are hard and wear-resistant, thereby improving the anti-slip effect.

Description

Oil-resistant and anti-slip protective gloves and preparation method thereof Technical Field

[0001] The present invention relates to the technical field of protective gloves preparation, in particular to oil-resistant and anti-slip protective gloves and a preparation method thereof. Background Art

[0002] Gloves are the most important and most commonly used labor protection products in people's daily production and manufacturing. Existing gloves are cut and sewn from various leathers, knitted fabrics or woven fabrics. Protective gloves are usually used in special working occasions to protect people's hands, such as special working occasions including low temperature, greasy, corrosive, and to prevent friction damage.

[0003] Existing oil-resistant and anti-slip protective gloves are mostly made of polyvinyl chloride plastic protective gloves or nitrile rubber gloves. However, polyvinyl chloride plastic gloves contain plasticizers, which are easily precipitated from grease after long-term use. They have poor oil resistance and are not environmentally friendly. In addition, the products are thick and uncomfortable. Nitrile rubber gloves have good oil resistance, but are easily brittle and cracked at low temperatures, have a poor feel, and sulfur and other accelerators are added during the manufacturing process. The product vulcanization time is long, a large amount of cleaning wastewater is generated, and the manufacturing process is not environmentally friendly.

[0004] Chinese patent document CN201010609040.8 discloses an environmentally friendly water-based polyurethane-coated glove and a method for preparing the same. The glove comprises a knitted glove lining with a water-based polyurethane coating applied to the surface of the lining. The water-based polyurethane slurry comprises a water-based polyurethane resin, water-based nitrile rubber, and additives. A method for preparing the environmentally friendly water-based polyurethane-coated glove is also provided, comprising three steps: a) slurry pouring; b) slurry dipping; and c) demolding. The gloves prepared exhibit not only solvent resistance, oil resistance, and weak acid and alkali resistance, but also a long service life and are environmentally friendly. Furthermore, the method employs environmentally friendly production during production, utilizes streamlined production, and employs a simple production process with low cost, making it suitable for large-scale industrial production. However, the gloves exhibit poor wear resistance, requiring further improvement.

[0005] Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an oil-resistant and anti-slip protective glove and a preparation method thereof, so as to solve the problems of serious pollution in the traditional protective glove production process and poor wear resistance of the product, thick coating and hard feel, and poor anti-slip performance.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] On the one hand, the present invention provides an oil-resistant and anti-slip protective glove, comprising a glove lining, wherein the surface of the glove lining is coated with a water-blocking layer, the surface of the water-blocking layer is coated with a composite latex layer, and the surface of the composite latex layer is coated with an anti-slip and wear-resistant layer.

[0009] Preferably, the slurry of the composite latex layer includes water-based polyurethane, polyvinyl chloride latex, emulsifier and cross-linking coupling agent.

[0010] Preferably, the waterborne polyurethane is prepared by dispersing a polyurethane prepolymer in water, does not require the use of DMF organic solvent as a dispersion medium, does not require water washing during the production process, and has excellent environmental performance. Traditional polyurethane uses DMF organic solvent dispersant, and the production process generates a large amount of wastewater and waste gas pollution, which causes great harm to the human body and the environment.

[0011] Polyvinyl chloride latex and traditional polyvinyl chloride resin are two completely different forms of PVC materials, and their production formulas and processes are also completely different.

[0012] Polyvinyl chloride latex is a type of PVC in the form of a water emulsion. The production of PVC emulsion involves mixing the PVC raw materials with emulsifiers and stabilizers, then emulsifying them under specific conditions. The emulsifier suspends tiny PVC particles with a particle size distribution of 100 to 300 nm in water, forming an emulsion of PVC. This environmentally friendly production process does not require the use of plasticizers and is safe and non-toxic to the human body. Traditional PVC resin is produced through high-temperature and high-pressure polymerization, resulting in a solid powder form that requires an oil-based plasticizer as a dispersant. This production process generates waste gas pollution and is prone to oil seepage on the surface.

[0013] The mass ratio of waterborne polyurethane to polyvinyl chloride latex to emulsifier to cross-linking coupling agent is 50:50-75:1-2:1-5.

[0014] In the present invention, the emulsifiers used to blend two emulsions, waterborne polyurethane and polyvinyl chloride, with different chemical properties and compositions, present significant difficulties and challenges. These are two completely different types of plastic polymers, and their particle sizes vary significantly, making it difficult to achieve a stable, compatible dispersion to form a uniform, stable emulsion. To stabilize the two composite emulsions and prevent phase separation, different types of emulsifiers are preferred: 1. Nonionic emulsifiers 2. Cationic emulsifiers 3. Anionic emulsifiers 4. Polymeric emulsifiers 5. Lipid emulsifiers 6. Natural emulsifiers. The appropriate emulsifier type and dosage depend on the properties of the two emulsions to ensure their stability and quality.

[0015] More preferably, the emulsifier is selected from at least one of sodium lauryl sulfate, sodium dodecylbenzene sulfonate, Tween 60, alkylphenol polyoxyethylene ether, alkyl polyethylene glycol ether, and ethylene oxide polymer.

[0016] In the present invention, the cross-linking coupling agent can be selected from 1. isocyanate cross-linking agent, 2. reactive epoxy cross-linking agent, 3. initiator, 4. multifunctional cross-linking agent in order to make the two resins more firmly bonded and not easily hydrolyzed when the water-based polyurethane and polyvinyl chloride latex are mixed. When selecting the cross-linking coupling agent, it is necessary to pay attention to its applicability and ratio to ensure that a good mixing effect is achieved without affecting the coating performance and that multiple functional groups in the two emulsions react to increase the bonding force between the resins to form a cross-linking effect.

[0017] More preferably, the cross-linking coupling agent is selected from hexamethylene diisocyanate, hydrogenated 4,4'-diphenylmethane diisocyanate or isophorone diisocyanate.

[0018] Preferably, the slurry of the anti-skid and wear-resistant layer includes water-based polyurethane, polyvinyl chloride latex, nitrile particles, ceramic particles and a suspension stabilizer.

[0019] Preferably, the mass ratio of the waterborne polyurethane, polyvinyl chloride latex, nitrile particles, ceramic powder and suspension stabilizer is 30-50:50-80:80-100:10-20:1-5.

[0020] In the present invention, the suspension stabilizer combination can prevent the sedimentation and stability of powder particles. Different suspension stabilizers will have different effects and influences on the system. Preferably, 1. polymer dispersant, 2. surfactant, 3. colloidal stabilizer, 4. hydrophilic additive are selected. The appropriate suspension stabilizer is selected according to the formulation and application requirements.

[0021] Preferably, the suspension stabilizer is selected from polyvinyl pyrrolidone, cellulose, carboxymethyl cellulose or polyvinyl alcohol.

[0022] Preferably, the glove lining is made of natural fiber or synthetic textile fiber.

[0023] Preferably, the thickness of the water-blocking layer is 0.05 to 0.3 mm; the thickness of the composite latex layer is 0.05 to 0.3 mm; and the thickness of the anti-skid and wear-resistant layer is 0.10 to 0.3 mm. On the other hand, the present invention also provides a method for preparing the above-mentioned oil-resistant and anti-skid protective gloves, comprising the following steps:

[0024] S1. Place the glove lining on the assembly line mold, then spray (drink) the waterproof coating slurry on the surface of the glove lining and cure it at 120-160°C for 5-20 minutes to form a water-blocking layer on the surface of the glove lining;

[0025] S2. Stirring and mixing waterborne polyurethane, polyvinyl chloride latex, emulsifier, and cross-linking coupling agent in parts by weight to obtain a dispersed emulsion, and then applying the dispersed emulsion to the surface of the water-blocking layer, and curing the mixture at 130-170° C. for 5-15 minutes to form a composite latex layer on the surface of the water-blocking layer;

[0026] S3. Evenly mix water-based polyurethane, polyvinyl chloride latex, nitrile particles, ceramic powder and suspension stabilizer by weight to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer. Plasticize at 140-170° C. for 15-30 minutes to form an anti-skid and wear-resistant layer on the surface of the composite latex layer, and then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] In order to solve the problem of being environmentally friendly and not generating wastewater pollution during the production process, and making the product light, soft, oil-resistant and chemically stable, and not prone to brittle cracking at low temperatures, the present invention adopts environmentally friendly water-based polyurethane and polyvinyl chloride latex for compounding. Water-based polyurethane is different from traditional oil-based polyurethane and does not contain DMF (N,N dimethylformamide) solvent, and the production process is pollution-free. Polyvinyl chloride latex is also different from traditional polyvinyl chloride resin and does not require oil-based plasticizer as the main plasticizing material, which solves the problem of incompatibility between polyvinyl chloride oil resin and water-based polyurethane. By compounding water-based polyurethane and polyvinyl chloride latex in a certain proportion and adding a cross-linking coupling agent to cross-link the two materials at high temperature, the mechanical properties of the product are improved.

[0029] The present invention combines nitrile particles and ceramic particles in the anti-skid and wear-resistant coating formula, so that the raised particles on the surface of the anti-skid and wear-resistant layer are not completely melted at high temperatures. The raised anti-skid points can have good bonding with the resin, good toughness, hardness and wear resistance, thereby improving the anti-skid effect; the anti-skid slurry prepared by combining ceramic particles and nitrile particles in a certain proportion is applied to the palm area, and its corrosion resistance and surface roughness are better than those of using PVC or nitrile particles alone in dry and wet states. The product of the present invention is safe and environmentally friendly, does not contain natural latex, and thus avoids allergic reactions to the human body. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below through specific preferred embodiments, but the present invention is not limited to the following embodiments.

[0031] It should be noted that, unless otherwise specified, all chemical reagents involved in the present invention were purchased through commercial channels.

[0032] A method for preparing oil-resistant and anti-slip protective gloves comprises the following steps:

[0033] S1. Place the glove lining on the assembly line mold, then spray (drink) the waterproof coating slurry on the surface of the glove lining. Curing at 60-160°C for 5-20 minutes forms a water-blocking layer on the surface of the glove lining.

[0034] In this step, the glove lining is made of natural fiber or synthetic textile fiber, which can be cotton, rayon, nylon, polyester, aramid, glass fiber coated yarn or acrylic or environmentally friendly recycled yarn;

[0035] The glove lining is selected from a knitted sewn glove inner layer or a 13G, 15G, 18G seamless woven glove inner layer or a 7G, 10G, 13G seamless woven fleece glove inner layer.

[0036] In this step, a waterproof coating material can be used to form a water-blocking layer, or the glove lining surface can be treated with a waterproof surface treatment liquid. Preferred water-blocking coating materials are selected according to specific application requirements: 1. Silane polymers and fluorocarbon polymers; 2. Polyether ester TPU; 3. Polymer mixtures including acrylates, polyurethanes, PC polyvinyl chloride polymers, chloroprene rubber, nitrile rubber, and butyl rubber; 4. Coagulant combination materials, etc. Different water-blocking effects can be achieved through dipping processes and formulations.

[0037] The thickness of the water-blocking layer is 0.05 to 0.3 mm.

[0038] S2. Stir and mix the water-based polyurethane, polyvinyl chloride latex, emulsifier and cross-linking coupling agent in parts by weight to obtain a dispersed emulsion, and then dip-coat the dispersed emulsion on the surface of the water-blocking layer, and cure it at 130-170° C. for 5-15 minutes to form a composite latex layer on the surface of the water-blocking layer.

[0039] In this step, the mass ratio of waterborne polyurethane, polyvinyl chloride latex, emulsifier and cross-linking coupling agent is 50:50-75:1-2:1-5, wherein the emulsifier can be preferably different types of emulsifiers 1. non-ionic emulsifier 2. cationic emulsifier 3. anionic emulsifier 4. polymeric emulsifier 5. lipid emulsifier 6. natural emulsifier. The selection of the appropriate emulsifier type and amount depends on the characteristics of the two emulsions to ensure the stability and quality of the emulsions. The cross-linking coupling agent can preferably be 1. isocyanate cross-linking agent, 2. reactive epoxy cross-linking agent, 3. initiator, 4. multifunctional cross-linking agent. When selecting the cross-linking coupling agent, it is necessary to pay attention to its applicability and ratio to ensure that a good mixing effect is achieved without affecting the coating performance and that multiple functional groups in the two emulsions react to increase the bonding force between the resins to form a cross-linking effect.

[0040] The thickness of the composite latex layer is 0.05 to 0.3 mm.

[0041] This step uses environmentally friendly water-based polyurethane and polyvinyl chloride latex to compound. Water-based polyurethane is different from traditional oil-based polyurethane. It does not contain DMF (N,N dimethylformamide) solvent and the production process is pollution-free. Polyvinyl chloride latex is also different from traditional polyvinyl chloride resin. It does not require oil-based plasticizer as the main plasticizing material, which solves the problem of incompatibility between polyvinyl chloride oil resin and water-based polyurethane. By compounding water-based polyurethane and polyvinyl chloride latex in a certain proportion and adding a cross-linking coupling agent to cross-link the two materials at high temperature, the product has better water resistance and chemical stability.

[0042] S3. Evenly mix water-based polyurethane, polyvinyl chloride latex, nitrile particles, ceramic powder and suspension stabilizer by weight to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer. Plasticize at 140-170° C. for 15-30 minutes to form an anti-skid and wear-resistant layer on the surface of the composite latex layer, and then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0043] In this step, the mass ratio of waterborne polyurethane, polyvinyl chloride latex, nitrile particles, ceramic powder and suspension stabilizer is 30-50:50-80:80-100:10-20:1-5;

[0044] The particle size of nitrile particles and ceramic particles is 60-120 mesh;

[0045] The thickness of the anti-slip and wear-resistant layer is 0.10-0.3mm;

[0046] In this step, the melting point of ceramic powder is 1700°C, and the melting point of nitrile is 140°C. When plasticized at a high temperature of 140-170°C, nitrile, ceramic particles and polyurethane / polyvinyl chloride dispersed emulsion are coated on the composite latex layer. Since the nitrile particles begin to melt at 140°C and combine with the ceramic powder, the ceramic powder has a high melting point and is not melted. After being plasticized by nitrile and polyurethane / polyvinyl chloride emulsion, it is combined with the nitrile particles to form a firm anti-skid raised point. The anti-skid coating material is different from traditional nitrile particles and PVC suspended particles. Usually, plastics and rubber have low melting temperatures and have begun to melt at a plasticizing temperature of 150-170°C. The surface anti-skid raised points are softer, and their wear resistance and frictional force are less than the wear-resistant hardness of ceramic powder. Therefore, the surface raised points of the ceramic material added in dry and wet states are harder and more wear-resistant, and the anti-skid effect is significantly improved.

[0047] The present invention will be further described below with reference to specific examples.

[0048] The glove lining used in the present invention is a polyester knitted glove lining;

[0049] The waterproof coating is a silane-modified polymer, model GENIOSILXT-50;

[0050] CAS number of ethylene oxide polymer: 68797-57-9;

[0051] Waterborne polyurethane, trade name,

[0052] Nitrile particles, Japan JSR, model N220S;

[0053] Polyvinyl alcohol, model PVA17-88;

[0054] PVC particles, Kunshan Kexin Polymer Materials Co., Ltd., model ESK;

[0055] Polyvinyl chloride latex, trade name, KANEVINYL PASTE EL-33;

[0056] The particle size of the ceramic powder is 60-120 mesh.

[0057] Example 1

[0058] A method for preparing oil-resistant and anti-slip protective gloves comprises the following steps:

[0059] S1. Place the glove lining on the assembly line mold, then spray the waterproof coating liquid on the surface of the glove lining and cure it at 140°C for 10 minutes to form a water-blocking layer on the surface of the glove lining. The thickness of the water-blocking layer is 0.1 mm.

[0060] S2. 50 parts of waterborne polyurethane, 75 parts of polyvinyl chloride latex, 2 parts of ethylene oxide polymer, and 1 part of isophorone diisocyanate were stirred and mixed to obtain a dispersed emulsion, and then the dispersed emulsion was dip-coated on the surface of the water-blocking layer and cured at 150° C. for 5 minutes to form a composite latex layer on the surface of the water-blocking layer. The thickness of the composite latex layer was 0.05 mm.

[0061] S3. Evenly mix 40 parts of waterborne polyurethane, 80 parts of polyvinyl chloride latex, 80 parts of nitrile particles, 10 parts of ceramic powder and 2 parts of polyvinyl alcohol to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer, plasticize at 160°C for 20 minutes, and form an anti-skid and wear-resistant layer on the surface of the composite latex layer. The thickness of the anti-skid and wear-resistant layer is 0.3 mm; then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0062] Example 2

[0063] A method for preparing oil-resistant and anti-slip protective gloves comprises the following steps:

[0064] S1. Place the glove lining on the assembly line mold, then spray the waterproof coating on the surface of the glove lining and cure it at 160°C for 5 minutes to form a water-blocking layer on the surface of the glove lining. The thickness of the water-blocking layer is 0.1 mm.

[0065] S2. 50 parts of waterborne polyurethane, 60 parts of polyvinyl chloride latex, 2 parts of Tween 60, and 3 parts of hexamethylene diisocyanate were stirred and mixed to obtain a dispersed emulsion, and then the dispersed emulsion was dip-coated on the surface of the water-blocking layer and cured at 170° C. for 5 minutes to form a composite latex layer on the surface of the water-blocking layer. The thickness of the composite latex layer was 0.05 mm.

[0066] S3. Mix 50 parts of water-based polyurethane, 70 parts of polyvinyl chloride latex, 100 parts of nitrile particles, 20 parts of ceramic powder and 2 parts of polyvinyl pyrrolidone to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer, plasticize at 140°C for 30 minutes, and form an anti-skid and wear-resistant layer on the surface of the composite latex layer. The thickness of the anti-skid and wear-resistant layer is 0.3 mm, and then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0067] Example 3

[0068] A method for preparing oil-resistant and anti-slip protective gloves comprises the following steps:

[0069] S1. Place the glove lining on the assembly line mold, then dip-coat the waterproof coating on the surface of the glove lining and cure it at 120°C for 20 minutes to form a water-blocking layer on the surface of the glove lining. The thickness of the water-blocking layer is 0.1 mm.

[0070] S2. 50 parts of waterborne polyurethane, 60 parts of polyvinyl chloride latex, 2 parts of sodium lauryl sulfate, and 4 parts of isophorone diisocyanate were stirred and mixed to obtain a dispersed emulsion. The dispersed emulsion was then dip-coated on the surface of the water-blocking layer and cured at 160° C. for 10 minutes to form a composite latex layer on the surface of the water-blocking layer. The thickness of the composite latex layer was 0.05 mm.

[0071] S3. Evenly mix 50 parts of waterborne polyurethane, 80 parts of polyvinyl chloride latex, 90 parts of nitrile particles, 15 parts of ceramic powder and 3 parts of polyvinyl alcohol to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer. Plasticize at 150°C for 25 minutes to form an anti-skid and wear-resistant layer on the surface of the composite latex layer. The thickness of the anti-skid and wear-resistant layer is 0.3 mm. Then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0072] Example 4

[0073] A method for preparing oil-resistant and anti-slip protective gloves comprises the following steps:

[0074] S1. Place the glove lining on the assembly line mold, then dip-coat the waterproof coating on the surface of the glove lining and cure it at 140°C for 15 minutes to form a water-blocking layer on the surface of the glove lining. The thickness of the water-blocking layer is 0.10 mm.

[0075] S2. 50 parts of waterborne polyurethane, 70 parts of polyvinyl chloride latex, 1.5 parts of sodium dodecylbenzene sulfonate, and 5 parts of hexamethylene diisocyanate were stirred and mixed to obtain a dispersed emulsion. The dispersed emulsion was then dip-coated on the surface of the water-blocking layer and cured at 160° C. for 10 minutes to form a composite latex layer on the surface of the water-blocking layer. The thickness of the composite latex layer was 0.1 mm.

[0076] S3. Evenly mix 50 parts of waterborne polyurethane, 70 parts of polyvinyl chloride latex, 100 parts of nitrile particles, 15 parts of ceramic powder and 5 parts of polyvinyl pyrrolidone to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer. Plasticize at 160°C for 15 minutes to form an anti-skid and wear-resistant layer on the surface of the composite latex layer. The thickness of the anti-skid and wear-resistant layer is 0.3 mm. Then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0077] Comparative Example 1

[0078] A method for preparing oil-resistant and anti-slip protective gloves comprises the following steps:

[0079] S1. Place the glove lining on the assembly line mold, then spray the waterproof coating on the surface of the glove lining and cure it at 140°C for 10 minutes to form a water-blocking layer on the surface of the glove lining. The thickness of the water-blocking layer is 0.1 mm.

[0080] S2. 50 parts of waterborne polyurethane, 75 parts of polyvinyl chloride latex, 2 parts of ethylene oxide polymer, and 1 part of isophorone diisocyanate were stirred and mixed to obtain a dispersed emulsion, and then the dispersed emulsion was dip-coated on the surface of the water-blocking layer and cured at 150° C. for 5 minutes to form a composite latex layer on the surface of the water-blocking layer. The thickness of the composite latex layer was 0.05 mm.

[0081] S3. Evenly mix 40 parts of waterborne polyurethane, 80 parts of polyvinyl chloride latex, 80 parts of nitrile particles, 10 parts of PVC particles and 2 parts of polyvinyl alcohol to obtain a composite emulsion, and then apply the composite emulsion on the composite latex layer, plasticize at 160°C for 20 minutes, and form an anti-skid and wear-resistant layer on the surface of the composite latex layer. The thickness of the anti-skid and wear-resistant layer is 0.3 mm; then cool and demold to obtain oil-resistant and anti-skid protective gloves.

[0082] The gloves prepared in Examples 1-4 and Comparative Example 1 were subjected to performance tests, as follows:

[0083] Anti-slip performance test: Ten subjects wearing gloves were asked to rate their feelings when gripping a steel rod (30mm diameter, 200mm length) soaked in cutting oil on a five-point scale: A: Very high clamping force, no slip at all; B: High clamping force, almost no slip; C: Slight clamping force, not easy to slip; D: Low clamping force, smooth; E: No clamping force, easy to slip.

[0084] Abrasion resistance test: refer to EU EN388:2016 test standard;

[0085] Tear resistance and tear resistance grade test: refer to the EU EN388:2016 test standard;

[0086] The test results are shown in the following table:

[0087] In Comparative Example 1, the anti-slip material uses a copolymer of PVC particles and nitrile particles as the palm anti-slip coating. The melting temperature of the particles is 140-170°C. Its surface morphology is significantly different from that of the composite anti-slip material of nitrile particles and ceramic particles. When the plasticizing temperature of the former reaches 140-170°C, both resin particles begin to melt. The gap between the resins on the surface of the anti-slip layer is reduced after melting at high temperature, and the surface is relatively smooth. The melting temperatures of the composite blend of nitrile and ceramic particles are 140°C and 1700°C, respectively. The difference between the two is very large. When the plasticizing temperature is 170℃, nitrile begins to melt and bond with ceramic, water-based polyurethane and polyvinyl chloride latex layers, while the particle size of ceramic particles does not change and remains in the original dispersed and suspended state. The particle gaps in the anti-slip layer are larger. The combination of ceramic particles at the raised points and nitrile increases the toughness, hardness and wear resistance, and the surface roughness is strong. The anti-slip effect is better in dry and wet states than the anti-slip particles of PVC particles and nitrile particles or two copolymers used alone. The surface is rough and not easy to slip, and the ceramic material also has better corrosion resistance and migration resistance.

[0088] Finally, it should be noted that the above embodiments do not limit the present invention in any form. Those skilled in the art will appreciate that modifications and improvements can be made based on the present invention. Therefore, any modifications or improvements made without departing from the spirit of the present invention are intended to fall within the scope of protection claimed in the present invention.

Claims

1. An oil-resistant and anti-slip protective glove, characterized in that: The glove lining comprises a glove lining, the surface of which is coated with a water-blocking layer, the surface of which is coated with a composite latex layer, and the surface of which is coated with an anti-skid and wear-resistant layer.

2. The oil-resistant and anti-slip protective gloves according to claim 1, characterized in that: The slurry of the composite latex layer includes water-based polyurethane, polyvinyl chloride latex, emulsifier and cross-linking coupling agent.

3. The oil-resistant and anti-slip protective gloves according to claim 2, characterized in that: The mass ratio of the waterborne polyurethane, polyvinyl chloride latex, emulsifier and cross-linking coupling agent is 50:50-75:1-2:1-5.

4. The oil-resistant and anti-slip protective gloves according to claim 3, characterized in that: The emulsifier is selected from at least one of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, Tween 60, alkylphenol polyoxyethylene ether, alkyl polyethylene glycol ether, and ethylene oxide polymer.

5. The oil-resistant and anti-slip protective gloves according to claim 3, characterized in that: The cross-linking coupling agent is selected from hexamethylene diisocyanate, hydrogenated 4,4'-diphenylmethane diisocyanate or isophorone diisocyanate.

6. The oil-resistant and anti-slip protective gloves according to claim 1, characterized in that: The slurry of the anti-skid and wear-resistant layer includes water-based polyurethane, polyvinyl chloride latex, nitrile particles, ceramic particles and a suspension stabilizer.

7. The oil-resistant and anti-slip protective gloves according to claim 6, characterized in that: The mass ratio of the waterborne polyurethane, the polyvinyl chloride latex, the nitrile particles, the ceramic particles and the suspension stabilizer is 30-50:50-80:80-100:10-20:1-5.

8. The oil-resistant and anti-slip protective gloves according to claim 1, characterized in that: The material of the glove lining is natural fiber or synthetic textile fiber.

9. The oil-resistant and anti-slip protective gloves according to claim 1, characterized in that: The thickness of the water-blocking layer is 0.05-0.3 mm; the thickness of the composite latex layer is 0.05-0.3 mm; the thickness of the anti-skid and wear-resistant layer is 0.10-0.3 mm.

10. The method for preparing the oil-resistant and anti-skid protective gloves according to any one of claims 1 to 9, characterized in that: The steps include: S1: Put the glove lining on the assembly line mold, then spray (shower, dip) the waterproof coating slurry on the surface of the glove lining, and cure it at 120-160℃ for 5-20min to form a water-blocking layer on the surface of the glove lining; S2, stirring and mixing waterborne polyurethane, polyvinyl chloride latex, emulsifier and cross-linking coupling agent by weight to obtain a dispersed emulsion, and then dip-coating the dispersed emulsion on the surface of the water-blocking layer, and curing at 120-170° C. for 5-15 minutes to form a composite latex layer on the surface of the water-blocking layer; S3. Evenly mix water-based polyurethane, polyvinyl chloride latex, nitrile particles, ceramic particles and suspension stabilizer by weight to obtain a composite emulsion, and then dip-coat the composite emulsion on the composite latex layer, and cure at 120-170° C. for 15-30 min to form an anti-skid and wear-resistant layer on the surface of the composite latex layer, and then cool and demold to obtain oil-resistant and anti-skid protective gloves.

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