Preparation method of high-wear-resistance high-finger-slippery soft coated gloves

Abstract

The invention discloses a preparation method of a high-wear-resistance high-finger-slippery soft coating glove, which comprises the following steps: physically spraying a bio-based organic polymer material on the surface of a glove core coated with dipping latex, subsequently carrying out prevulcanization and high-temperature vulcanization in sequence, then washing by adopting alkali liquor, acid liquor and water in sequence, and finally drying to obtain the high-wear-resistance high-finger-slippery soft coating glove. And drying to obtain the high-wear-resistance high-finger-slippery soft coated gloves. The coating has the advantages that the production process is simple and reliable, the finger slip and wear resistance of the coating are greatly improved, meanwhile, the coating is endowed with a fine sand surface effect, and the coating has excellent finger slip, durable and comfortable effects in an oily environment and a dry environment.

Description

Technical Field

[0001] The present invention relates to the technical field of glove preparation, and particularly relates to a preparation method of a highly wear-resistant, highly finger-slip and soft-coated glove. Background Art

[0002] With the development of society, enterprises pay more and more attention to the operation safety of workers. For production operations in oil-water environments and dry environments, the requirements for operation grasping and comfort are increasing day by day. Therefore, there is a great demand in the market for gloves with high finger-slip and highly wear-resistant soft coatings. Currently, there are various such products on the market, including latex embossed / glossed gloves, water-washable gloves, and frosted gloves. Latex embossed / glossed gloves have good finger-slip ability, but their comfort in use is lacking, and irritating odor organic solvents such as xylene are required during production, and the production process is not environmentally friendly; water-washable gloves have excellent comfort, but their finger-slip and durability are average, and a large amount of wastewater is generated during the production process, bringing great production costs for sewage treatment. Summary of the Invention

[0003] The purpose of the present invention is to provide a preparation method of a highly wear-resistant, highly finger-slip and soft-coated glove. The production process is simple and reliable, which greatly increases the finger-slip and wear-resistant properties of the coating. At the same time, it endows the coating with a delicate sand surface effect, and has excellent finger-slip, durability and comfort effects in oily environments and dry environments.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions:

[0005] A preparation method of a highly wear-resistant, highly finger-slip and soft-coated glove, characterized in that a bio-based organic polymer material is physically sprayed on the surface of a glove core coated with impregnated latex, and after subsequent pre-vulcanization and high-temperature vulcanization in sequence, it is then washed with an alkali solution, an acid solution and water in sequence, and dried to obtain a highly wear-resistant, highly finger-slip and soft-coated glove.

[0006] Preferably, the bio-based organic polymer material is selected from one or a mixture of albumin, globulin, phosphoprotein and casein. The particle size of the bio-based organic polymer material is less than 50 mesh, and the frequency of the spraying fan is 10 Hz - 30 Hz.

[0007] Preferably, the pre-vulcanization temperature is 70 - 90 °C, the pre-vulcanization time is 90 min, the high-temperature vulcanization temperature is 110 - 140 °C, and the high-temperature vulcanization time is 90 min.

[0008] Preferably, the alkali solution used for alkali washing is selected from one of NaOH solution or KOH solution, the mass fraction of the alkali solution is 1%-5%, the alkali washing time is 45-70 min, the acid solution used for acid washing is acetic acid solution with a mass fraction of 1%-5%, the acid washing time is 45-70 min, after acid washing, it is washed twice with water, the water washing time is 60 min, and the drying temperature is 90 °C.

[0009] Preferably, the impregnated latex, by weight, comprises the following raw materials: 70-100 parts of nitrile latex, 15-20 parts of styrene-butadiene latex, 7-10 parts of waterborne PU, 0.5-0.8 parts of KOH, 1-2 parts of surfactant, 2-3 parts of foaming agent, 1-3 parts of sulfur, 2-4 parts of accelerator, 1-3 parts of zinc oxide, 1-3 parts of titanium dioxide, 3-5 parts of film-forming agent, 4-5 parts of anti-aging agent, 7-10 parts of cross-linking agent, 4-5 parts of biological composite enzyme, 1-3 parts of black pigment, and 1-4 parts of thickener.

[0010] Preferably, the surfactant is selected from one of polyoxyethylene, polyoxypropylene, sodium tripolyphosphate or sodium sulfate, the foaming agent is selected from one of azo compounds, sulfonyl hydrazides or nitroso compounds, the accelerator is selected from one of thiazoles, sulfenamides, thiurams, dithiocarbamates, guanidines or xanthates, the film-forming agent is selected from one of polymer resins, acrylic resins or nitrocellulose, the anti-aging agent is selected from one of amine anti-aging agents, phenolic anti-aging agents or heterocyclic anti-aging agents, the cross-linking agent is selected from one of phenolic resins, epoxy resins or polyvinyl alcohol, the biological composite enzyme is selected from one of enzyme amylase, protease, lipase, phytase, cellulase or dextranase, and the thickener is selected from one of sodium carboxymethyl cellulose, propylene glycol alginate, sodium carboxymethyl starch, hydroxypropyl starch ether, sodium starch phosphate, acetylated distarch phosphate, phosphorylated distarch phosphate or hydroxypropyl distarch phosphate.

[0011] Preferably, the preparation method of the glove core coated with impregnated latex specifically comprises:

[0012] S1, mixing and stirring the raw material components of the impregnated latex to obtain the impregnated latex;

[0013] S2, putting the glove core on the hand mold and performing a preheating treatment, with the treatment temperature being 50-80 °C;

[0014] S3, impregnating the glove core in the preheating stage with a coagulant;

[0015] S4, after impregnating for 60-80 s, impregnating the latex and leveling 1-4 sides;

[0016] S5, after the dipping section is completed, entering the latex leveling section, with the latex leveling duration being 50-80 s.

[0017] Preferably, the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 3% - 10%.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. In the present invention, through bio-based organic polymers, namely albumin, globulin, phosphoprotein, and casein, the friction of the coating can be enhanced, and the strength of the coating can also be enhanced. These bio-based organic polymers have characteristics such as low density and high strength. During the spraying process, they can be more easily and evenly dispersed on the surface of the coating. During the vulcanization treatment, the carbonyl-amine reaction between the bio-based polymers and the carbonyl compounds and amino compounds in the coating material is more sufficient, and the macromolecular polymerization is denser, thereby improving the physical properties such as wear resistance and finger slipperiness of the coating.

[0020] 2. In the present invention, the bio-based polymers react with the amino groups and isocyanate groups in the coating material to form urea compounds. The reaction mechanism can be divided into two steps: The first step is that the amino group attacks the isocyanide group in the isocyanate to form an intermediate similar to an amine; the second step is that the intermediate reacts with another isocyanate molecule to form a urea compound. The urea compound can effectively fill the voids between rubber molecules, improving its wear resistance and tear resistance; the urea compound can also improve the heat resistance of the rubber, enhancing its stability and elasticity in high-temperature environments. Meanwhile, the keratin in the bio-based organic polymers remaining on the surface of the coating has excellent compatibility and tightly binds to the coating material through intermolecular forces during the coating treatment process, greatly improving the wear resistance of the coating without causing any irritation to the skin.

[0021] 3. For the crosslinking agent used in the present invention, the hydroxymethyl group will undergo an addition reaction with the double bonds in the rubber, such as carboxyl or amino groups. This reaction will increase the crosslinking strength of the rubber and provide better physical properties; the carboxyl group will react with the functional group -N = C = N- (Carbodilite) on the impregnated substrate, improving the adhesion between the rubber and the impregnated substrate and making the coating more durable. The anti-aging agent forms a protective film on the surface of the rubber. The active ingredient of the anti-aging agent can chemically react with the oxygen molecules on the surface of the rubber to form a protective film. This protective film has strong antioxidant properties and can prevent the further erosion of oxygen molecules, thereby delaying the process of rubber aging. The bio-composite enzyme removes the residual unreacted bio-based organic polymers on the surface of the coating during the production process, leaving only a high-strength film layer on the surface of the coating, thus significantly improving the wear resistance of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a microscopic structure diagram of the glove surface layer prepared by the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. This embodiment does not constitute a limitation on the present invention.

[0024] Example 1

[0025] This embodiment provides a method for preparing a highly wear-resistant and highly finger-slip coating, including the following steps:

[0026] S1. Prepare the dipping latex: By weight, it includes the following raw materials: 70 parts of nitrile latex, 15 parts of styrene-butadiene latex, 10 parts of waterborne PU, 0.5 part of KOH, 1 part of surfactant polyoxyethylene, 2 parts of foaming agent azo compound, 1 part of sulfur, 2 parts of thiazole accelerator, 1 part of zinc oxide, 1 part of titanium dioxide, 3 parts of film-forming agent polymer resin, 4 parts of amine antioxidant, 7 parts of crosslinking agent phenolic resin, 4 parts of enzyme amylase, 1 part of black pigment, and 1 part of thickener carboxymethyl cellulose sodium;

[0027] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50°C;

[0028] S3. Dipping and coagulating section: Dip the glove core from the preheating section into the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 3%;

[0029] S4. Dipping section: After dipping and coagulating for 60S, dip into the dipping latex and even the four sides;

[0030] S5. Even latex section: After the dipping section is completed, enter the even latex section, and the even latex time is 50S;

[0031] S6. Surface treatment section: Physically spray the albumin latex coating, and the fan frequency is 10Hz;

[0032] S7. Pre-vulcanization section and vulcanization section: Conduct pre-vulcanization at 90°C and high-temperature vulcanization at 110°C, and the treatment time is 1.5h each;

[0033] S8. Demoulding, use 1% NaOH solution for alkali washing for 70min, after alkali washing, conduct acid washing, and the acid washing time with 1% acetic acid solution is 70min; after acid washing, wash with water twice, the water washing time is 60min, and dry at 90°C to obtain the glove.

[0034] Example 2

[0035] S1. Prepare the dipping latex; by weight, it includes the following raw materials: 70 parts of nitrile latex, 15 parts of styrene-butadiene latex, 10 parts of aqueous PU, 0.5 part of KOH, 1 part of surfactant polyoxyethylene, 2 parts of foaming agent azo compound, 1 part of sulfur, 2 parts of thiazole accelerator, 1 part of zinc oxide, 1 part of titanium dioxide, 3 parts of film-forming agent polymer resin, 4 parts of amine antioxidant, 7 parts of cross-linking agent phenolic resin, 4 parts of enzyme amylase, 1 part of black pigment, 1 part of thickener sodium carboxymethyl cellulose;

[0036] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50°C;

[0037] S3. Dipping and coagulating section: Immerse the glove core from the preheating section in the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 3% - 10%;

[0038] S4. Dipping section: After dipping and coagulating for 60S, dip the latex and level on 4 sides;

[0039] S5. Leveling section: After the dipping section is completed, enter the leveling section, and the leveling time is 50S;

[0040] S6. Surface treatment section: Physically spray the albumin latex coating, and the fan frequency is 15Hz;

[0041] S7. Pre-vulcanization section and vulcanization section: Conduct pre-vulcanization at 90°C and high-temperature vulcanization at 110°C for 1.5h each;

[0042] S8. Demoulding, wash with 1% NaOH solution for 70min, conduct pickling after the alkali washing, and the pickling time with 1% acetic acid solution is 70min; after pickling, wash with water 2 times, the water washing time is 60min, and dry at 90°C to obtain the gloves.

[0043] Example 3

[0044] S1. Prepare the dipping latex; by weight, it includes the following raw materials: 70 parts of nitrile latex, 15 parts of styrene-butadiene latex, 10 parts of aqueous PU, 0.5 part of KOH, 1 part of surfactant polyoxyethylene, 2 parts of foaming agent azo compound, 1 part of sulfur, 2 parts of thiazole accelerator, 1 part of zinc oxide, 1 part of titanium dioxide, 3 parts of film-forming agent polymer resin, 4 parts of amine antioxidant, 7 parts of cross-linking agent phenolic resin, 4 parts of enzyme amylase, 1 part of black pigment, 1 part of thickener sodium carboxymethyl cellulose;

[0045] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50°C;

[0046] S3. Dipping and coagulating section: Immerse the glove core from the preheating section in the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 3% - 10%;

[0047] S4. Dipping section: After dipping for 60S, level the surface on all four sides after dipping in latex;

[0048] S5. Leveling latex section: After the dipping section is completed, enter the leveling latex section with a leveling time of 50S;

[0049] S6. Surface treatment section: Physically spray a latex coating with albumin, and the fan frequency is 20Hz;

[0050] S7. Pre-vulcanization section and vulcanization section: Perform pre-vulcanization at 90°C and high-temperature vulcanization at 110°C for 1.5h each;

[0051] S8. Demoulding, wash with 1% NaOH solution for 70min, perform pickling after the alkali washing is completed, and the pickling time with 1% acetic acid solution is 70min; After pickling, wash with water twice with a water washing time of 60min, and dry at 90°C to obtain gloves.

[0052] Example 4

[0053] S1. Prepare dipping latex; by weight, it includes the following raw materials: 85 parts of nitrile latex, 18 parts of styrene-butadiene latex, 8 parts of waterborne PU, 0.7 part of KOH, 2 parts of surfactant polyoxypropylene, 3 parts of blowing agent sulfonyl hydrazide, 2 parts of sulfur, 3 parts of sulfenamide accelerator, 2 parts of zinc oxide, 2 parts of titanium dioxide, 4 parts of film-forming agent acrylic resin, 5 parts of phenolic antioxidant, 9 parts of cross-linking agent epoxy resin, 4 parts of protease, 2 parts of black pigment, 3 parts of thickener propylene glycol alginate;

[0054] S2. Preheating section: Put the glove core on the hand mold and perform preheating treatment at a treatment temperature of 50°C;

[0055] S3. Dipping and coagulating section: Dip the glove core from the preheating section in the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 5%;

[0056] S4. Dipping section: After dipping for 60S, level the surface on all four sides after dipping in latex;

[0057] S5. Leveling latex section: After the dipping section is completed, enter the leveling latex section with a leveling time of 50S;

[0058] S6. Surface treatment section: Physically spray a latex coating with albumin, and the fan frequency is 25Hz;

[0059] S7. Pre-vulcanization section and vulcanization section: Perform pre-vulcanization at 90°C and high-temperature vulcanization at 110°C for 1.5h each;

[0060] S8. Demoulding. Wash with 3% NaOH solution for 60 min. After the caustic washing, perform pickling. The pickling time with 3% acetic acid solution is 60 min. After pickling, wash twice with water, with the water washing time being 60 min, and dry at 90 °C to obtain the gloves.

[0061] Example 5

[0062] S1. Prepare the dipping latex. By weight, it includes the following raw materials: 85 parts of nitrile latex, 18 parts of styrene-butadiene latex, 8 parts of waterborne PU, 0.7 part of KOH, 2 parts of surfactant polyoxypropylene, 3 parts of blowing agent sulfonyl hydrazide, 2 parts of sulfur, 3 parts of sulfenamide accelerator, 2 parts of zinc oxide, 2 parts of titanium dioxide, 4 parts of film-forming agent acrylic resin, 5 parts of phenolic antioxidant, 9 parts of crosslinking agent epoxy resin, 4 parts of protease, 2 parts of black pigment, and 3 parts of thickener propylene glycol alginate;

[0063] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50 °C;

[0064] S3. Dipping and coagulating section: Immerse the glove core from the preheating section in the coagulant. The coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 5%;

[0065] S4. Dipping section: After dipping and coagulating for 60 s, dip in the dipping latex and level on 4 sides;

[0066] S5. Leveling section: After the dipping section, enter the leveling section with a leveling time of 50 s;

[0067] S6. Surface treatment section: Physically spray the albumin latex coating with a fan frequency of 30 Hz;

[0068] S7. Pre-vulcanization section and vulcanization section: Perform pre-vulcanization at 90 °C and high-temperature vulcanization at 110 °C, each with a treatment time of 1.5 h;

[0069] S8. Demoulding. Wash with 3% NaOH solution for 60 min. After the caustic washing, perform pickling. The pickling time with 3% acetic acid solution is 60 min. After pickling, wash twice with water, with the water washing time being 60 min, and dry at 90 °C to obtain the gloves.

[0070] Example 6

[0071] S1. Prepare the dipping latex. By weight, it includes the following raw materials: 85 parts of nitrile latex, 18 parts of styrene-butadiene latex, 8 parts of waterborne PU, 0.7 part of KOH, 2 parts of surfactant polyoxypropylene, 3 parts of blowing agent sulfonyl hydrazide, 2 parts of sulfur, 3 parts of sulfenamide accelerator, 2 parts of zinc oxide, 2 parts of titanium dioxide, 4 parts of film-forming agent acrylic resin, 5 parts of phenolic antioxidant, 9 parts of crosslinking agent epoxy resin, 4 parts of protease, 2 parts of black pigment, and 3 parts of thickener propylene glycol alginate;

[0072] S2. Preheating section: Put the glove core on the hand mold and carry out preheating treatment at a treatment temperature of 50°C;

[0073] S3. Dipping and coagulating section: Dip the glove core from the preheating section into the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 5%;

[0074] S4. Dipping latex section: After dipping and coagulating for 60S, dip it into latex and then level the four sides;

[0075] S5. Leveling latex section: After the dipping latex section is completed, enter the leveling latex section, and the leveling latex time is 50S;

[0076] S6. Surface treatment section: Physically spray the globulin latex coating, and the fan frequency is 30Hz;

[0077] S7. Pre-vulcanization section and vulcanization section: Carry out pre-vulcanization at 90°C and high-temperature vulcanization at 110°C for 1.5h each;

[0078] S8. Demoulding, wash it with 3% NaOH solution for 60min, carry out pickling after the alkali washing is completed, and the pickling time with 3% acetic acid solution is 60min; After pickling, wash it with water twice, the water washing time is 60min, and dry it at 90°C to obtain the glove.

[0079] Example 7

[0080] S1. Prepare dipping latex; by weight, it includes the following raw materials: 100 parts of nitrile latex, 20 parts of styrene-butadiene latex, 10 parts of waterborne PU, 0.8 part of KOH, 2 parts of surfactant sodium tripolyphosphate, 3 parts of blowing agent nitroso compound, 3 parts of sulfur, 4 parts of dithiocarbamate accelerator, 3 parts of zinc oxide, 3 parts of titanium dioxide, 5 parts of film-forming agent nitrocellulose, 5 parts of heterocyclic antioxidant, 10 parts of cross-linking agent polyvinyl alcohol, 5 parts of cellulase, 3 parts of black pigment, 4 parts of thickener phosphorylated distarch phosphate;

[0081] S2. Preheating section: Put the glove core on the hand mold and carry out preheating treatment at a treatment temperature of 50°C;

[0082] S3. Dipping and coagulating section: Dip the glove core from the preheating section into the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 10%;

[0083] S4. Dipping latex section: After dipping and coagulating for 60S, dip it into latex and then level the four sides;

[0084] S5. Leveling latex section: After the dipping latex section is completed, enter the leveling latex section, and the leveling latex time is 50S;

[0085] S6. Surface treatment section: Physically spray a casein latex coating with a fan frequency of 30 Hz;

[0086] S7. Pre-vulcanization section and vulcanization section: Conduct pre-vulcanization at 90 °C and high-temperature vulcanization at 110 °C, each with a treatment time of 1.5 h;

[0087] S8. Demoulding: Wash with a 5% NaOH solution for 45 min. After the alkali washing, conduct acid washing. The acid washing time with a 5% acetic acid solution is 45 min; After acid washing, wash with water twice, with a water washing time of 60 min, and dry at 90 °C to obtain gloves.

[0088] Example 8

[0089] S1. Prepare the dipping latex; By weight, it includes the following raw materials: 100 parts of nitrile latex, 20 parts of styrene-butadiene latex, 10 parts of waterborne PU, 0.8 part of KOH, 2 parts of surfactant sodium tripolyphosphate, 3 parts of foaming agent nitroso compound, 3 parts of sulfur, 4 parts of dithiocarbamate accelerator, 3 parts of zinc oxide, 3 parts of titanium dioxide, 5 parts of film-forming agent nitrocellulose, 5 parts of heterocyclic antioxidant, 10 parts of crosslinking agent polyvinyl alcohol, 5 parts of cellulase, 3 parts of black pigment, 4 parts of thickener phosphorylated distarch phosphate;

[0090] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50 °C;

[0091] S3. Dipping and coagulating section: Dip the glove core from the preheating section into the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, with the volume fraction of acetic acid in the mixed solution being 10%;

[0092] S4. Dipping latex section: After dipping and coagulating for 60 s, dip into the dipping latex and then level the four sides;

[0093] S5. Leveling latex section: After the dipping latex section, enter the leveling latex section with a leveling time of 50 s;

[0094] S6. Surface treatment section: Physically spray a casein latex coating with a fan frequency of 30 Hz;

[0095] S7. Pre-vulcanization section and vulcanization section: Conduct pre-vulcanization at 90 °C and high-temperature vulcanization at 110 °C, each with a treatment time of 1.5 h;

[0096] S8. Demoulding: Wash with a 5% NaOH solution for 45 min. After the alkali washing, conduct acid washing. The acid washing time with a 5% acetic acid solution is 45 min; After acid washing, wash with water twice, with a water washing time of 60 min, and dry at 90 °C to obtain gloves.

[0097] Example 9

[0098] S1. Prepare the dipping latex; by weight, it includes the following raw materials: 100 parts of nitrile latex, 20 parts of styrene-butadiene latex, 10 parts of waterborne PU, 0.8 part of KOH, 2 parts of surfactant sodium tripolyphosphate, 3 parts of blowing agent nitroso compound, 3 parts of sulfur, 4 parts of dithiocarbamate accelerator, 3 parts of zinc oxide, 3 parts of titanium dioxide, 5 parts of film-forming agent nitrocellulose, 5 parts of heterocyclic antioxidant, 10 parts of crosslinking agent polyvinyl alcohol, 5 parts of cellulase, 3 parts of black pigment, 4 parts of thickener phosphorylated distarch phosphate;

[0099] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50 °C;

[0100] S3. Dipping and coagulating section: Dip the glove core from the preheating section into the coagulant, and the coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 10%;

[0101] S4. Dipping section: After dipping and coagulating for 60S, dip it into the dipping latex and then level the four sides;

[0102] S5. Leveling latex section: After the dipping section is completed, enter the leveling latex section, and the leveling latex time is 50S;

[0103] S6. Surface treatment section: Physically spray the phosphoprotein latex coating, and the fan frequency is 30Hz;

[0104] S7. Pre-vulcanization section and vulcanization section: Conduct pre-vulcanization at 90 °C and high-temperature vulcanization at 110 °C for 1.5h each;

[0105] S8. Demoulding, wash with 5% NaOH solution for 45min, conduct pickling after the alkali washing, and the pickling time with 5% acetic acid solution is 45min; After pickling, wash with water twice, the water washing time is 60min, and dry at 90 °C to obtain the gloves.

[0106] Comparative Example 1

[0107] S1. Prepare the dipping latex; by weight, it includes the following raw materials: 70 parts of nitrile latex, 15 parts of styrene-butadiene latex, 10 parts of waterborne PU, 0.5 part of KOH, 1 part of surfactant polyoxyethylene, 2 parts of blowing agent azo compound, 1 part of sulfur, 2 parts of thiazole accelerator, 1 part of zinc oxide, 1 part of titanium dioxide, 3 parts of film-forming agent polymer resin, 4 parts of amine antioxidant, 7 parts of crosslinking agent phenolic resin, 4 parts of enzyme amylase, 1 part of black pigment, 1 part of thickener sodium carboxymethyl cellulose;

[0108] S2. Preheating section: Put the glove core on the hand mold and conduct preheating treatment at a temperature of 50 °C;

[0109] S3. Dipping and Coagulating Section: The glove cores from the preheating section are dipped in a coagulant, which is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 3% - 10%.

[0110] S4. Dipping Latex Section: After dipping in the coagulant for 60S, the gloves are then dipped in latex and leveled on four sides.

[0111] S5. Leveling Latex Section: After the dipping latex section is completed, the gloves enter the leveling latex section, and the leveling time is 50S.

[0112] S6. Surface Treatment Section: Industrial salt is sprayed on the latex coating, and the fan frequency is 30Hz.

[0113] S7. Pre - vulcanization and Vulcanization Sections: The gloves are subjected to pre - vulcanization at 90°C and high - temperature vulcanization at 110°C for 1.5h each.

[0114] S8. Demolding: The gloves are washed with alkali for 70min. After the alkali washing, acid washing is carried out, and the acid washing time is 70min. After acid washing, they are washed with water twice, and the water washing time is 60min, and then dried at 90°C to obtain the gloves.

[0115] The finger slip of the gloves is measured by the dry - slip method. The weight is 1.5kg, and the finger - slip standard unit is (kgf). The mechanical properties of the gloves are measured by the European standard EN - 388 test method.

[0116] Take the foregoing Examples 1 - 9 and Comparative Example 1 for mechanical property testing and analysis. The specific test results are shown in Table 1 below:

[0117] Table 1 Mechanical Test Results of Examples 1 - 9 and Comparative Example 1

[0118]

[0119]

[0120] From the above experimental data, it can be seen that the treatment method provided by the present invention can effectively prepare a coating with high finger - slip and high wear - resistance. From the data, the more evenly the bio - based organic polymer material is sprayed, the better the finger - slip and wear - resistance of the gloves; at the same time, when the fan frequency is 20Hz, the performance of the bio - based organic polymer material sprayed coating completely exceeds that of the industrial salt sprayed coating.

[0121] In the appendix Figure 1As can be seen, for the coating prepared by the process flow method of the present invention, the pore diameters of the pores are relatively uniform. These uniform pores are like suction cups. When the rubber contacts the surface of an object, the rubber can create a larger adsorption effect with a larger contact area by contacting the minute protrusions on the surface of the object, forming a vacuum space under the action of atmospheric pressure, so that the suction cup fits tightly with the object, greatly improving the suction force and thus increasing the gripping force of the coating. In addition, the biocomposite enzyme in our formulation system decomposes the excess bio-based polymer organic material on the coating during the production process, only leaving a high-strength film layer on the surface of the coating, thereby significantly improving the wear resistance of the coating.

[0122] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the technical solution of the present invention.

Claims

1. A preparation method of a highly wear-resistant, highly finger-slip and soft-coated glove, characterized in that, Physically spray a bio-based organic polymer material on the surface of a glove core coated with impregnated latex. After subsequent pre-vulcanization and high-temperature vulcanization in sequence, then wash with an alkali solution, an acid solution, and water in sequence, and obtain high-wear-resistant, high-finger-slip, and soft-coated gloves after drying.

2. The preparation method of a highly wear-resistant and highly finger-slip soft coating glove according to claim 1, wherein: The bio-based organic polymer material is selected from one or more mixtures of albumin, globulin, phosphoprotein, and casein. The particle size of the bio-based organic polymer material is less than 50 mesh, and the frequency of the spraying fan is 10 Hz - 30 Hz.

3. The preparation method of a highly wear-resistant, highly finger-slip and soft-coated glove according to claim 1, characterized in that: The pre-vulcanization temperature is 70 - 90 °C, and the pre-vulcanization time is 90 min. The high-temperature vulcanization temperature is 110 - 140 °C, and the high-temperature vulcanization time is 90 min.

4. The preparation method of a highly wear-resistant, highly finger-slip and soft-coated glove according to claim 1, characterized in that: The alkali solution used for alkali washing is selected from one of NaOH solution or KOH solution. The mass fraction of the alkali solution is 1% - 5%, and the alkali washing time is 45 - 70 min. The acid solution used for acid washing is an acetic acid solution with a mass fraction of 1% - 5%, and the acid washing time is 45 - 70 min. After acid washing, wash twice with water, the water washing time is 60 min, and the drying temperature is 90 °C.

5. The preparation method of a highly wear-resistant and highly finger-slip soft-coated glove according to claim 1, characterized in that: The impregnated latex, by weight, comprises the following raw materials: 70 - 100 parts of nitrile latex, 15 - 20 parts of styrene-butadiene latex, 7 - 10 parts of waterborne PU, 0.5 - 0.8 part of KOH, 1 - 2 parts of surfactant, 2 - 3 parts of foaming agent, 1 - 3 parts of sulfur, 2 - 4 parts of accelerator, 1 - 3 parts of zinc oxide, 1 - 3 parts of titanium dioxide, 3 - 5 parts of film-forming agent, 4 - 5 parts of antioxidant, 7 - 10 parts of crosslinking agent, 4 - 5 parts of bio-compound enzyme, 1 - 3 parts of black pigment, and 1 - 4 parts of thickener.

6. The preparation method of a highly wear-resistant and highly finger-slip soft-coated glove according to claim 5, characterized in that: The surfactant is selected from one of polyoxyethylene, polyoxypropylene, sodium tripolyphosphate, or sodium sulfate. The foaming agent is selected from one of azo compounds, sulfonyl hydrazides, or nitroso compounds. The accelerator is selected from one of thiazoles, sulfenamides, thiurams, dithiocarbamates, guanidines, or xanthates. The film-forming agent is selected from one of polymer resins, acrylic resins, or nitrocellulose. The antioxidant is selected from one of amine antioxidants, phenolic antioxidants, or heterocyclic antioxidants. The crosslinking agent is selected from one of phenolic resins, epoxy resins, or polyvinyl alcohol. The bio-compound enzyme is selected from one of enzyme amylase, protease, lipase, phytase, cellulase, or dextranase. The thickener is selected from one of sodium carboxymethyl cellulose, propylene glycol alginate, sodium carboxymethyl starch, hydroxypropyl starch ether, sodium starch phosphate, acetylated distarch phosphate, phosphorylated distarch phosphate, or hydroxypropyl distarch phosphate.

7. The preparation method of a highly wear-resistant and highly finger-slip soft-coated glove according to claim 1, characterized in that: The preparation method of the glove core coated with impregnated latex specifically comprises: S1, Mix and stir the respective component raw materials of the impregnated latex to obtain the impregnated latex; S2, Put the glove core on the hand mold and conduct a preheating treatment at a temperature of 50 - 80 °C; S3, Immerse the glove core in the preheating section in a coagulant; S4, After immersing in the coagulant for 60 - 80 s, immerse in the latex and level 1 - 4 surfaces; S5, After the dipping section ends, enter the latex leveling section, and the latex leveling time is 50 - 80 s.

8. The preparation method of a highly wear-resistant and highly finger-slip soft-coated glove according to claim 7, characterized in that: The coagulant is a mixed solution of acetic acid and methanol, and the volume fraction of acetic acid in the mixed solution is 3% to 10%.

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