阅读说明：本技术 一种丁腈手套及其成型工艺 (Butyronitrile gloves and forming process thereof ) 是由 王显 张明燕 王崇 于 2021-08-28 设计创作，主要内容包括：本申请涉及丁腈生产技术领域,具体公开了一种丁腈手套及其成型工艺,其由包括如下重量份的原料配制而成：羧基丁腈胶乳45-57份、硫磺3-7份、氧化锌7-9份、氢氧化钾2-4份、去离子水9-18份、二氧化钛8-12份、亲油纳米二氧化硅3-5份、氧化石墨烯8-10份、聚氧化乙烯1-1.5份、稳定剂0.5-2份、凝固剂60-80份和消泡剂2-4份；氧化石墨烯经过疏水改性处理而得。本申请的丁腈手套的断裂伸长率高达547%,拉伸强度为42MPa,300%定伸应力为5.9MPa,表现出较为优良的弹性性能。(The application relates to the technical field of butyronitrile production, and particularly discloses a butyronitrile glove and a molding process thereof, wherein the butyronitrile glove is prepared from the following raw materials in parts by weight: 45-57 parts of carboxylic butyronitrile latex, 3-7 parts of sulfur, 7-9 parts of zinc oxide, 2-4 parts of potassium hydroxide, 9-18 parts of deionized water, 8-12 parts of titanium dioxide, 3-5 parts of lipophilic nano silicon dioxide, 8-10 parts of graphene oxide, 1-1.5 parts of polyoxyethylene, 0.5-2 parts of stabilizer, 60-80 parts of coagulant and 2-4 parts of defoamer; the graphene oxide is obtained by hydrophobic modification treatment. The butyronitrile gloves have elongation at break as high as 547%, tensile strength of 42MPa and 300% stress at definite elongation of 5.9MPa, and show excellent elastic performance.)

1. The butyronitrile gloves are characterized by being prepared from the following raw materials in parts by weight: 45-57 parts of carboxylic butyronitrile latex, 3-7 parts of sulfur, 7-9 parts of zinc oxide, 2-4 parts of potassium hydroxide, 9-18 parts of deionized water, 8-12 parts of titanium dioxide, 3-5 parts of lipophilic nano silicon dioxide, 8-10 parts of graphene oxide, 1-1.5 parts of polyoxyethylene, 0.5-2 parts of stabilizer, 60-80 parts of coagulant and 2-4 parts of defoamer; the graphene oxide is obtained by performing hydrophobic modification treatment.

2. The butyronitrile glove of claim 1, which is prepared from the following raw materials in parts by weight: 48-54 parts of carboxylic butyronitrile latex, 4-6 parts of sulfur, 7.5-8.5 parts of zinc oxide, 2.5-3.5 parts of potassium hydroxide, 12-14 parts of deionized water, 9-11 parts of titanium dioxide, 3.5-4.5 parts of oleophylic nano silicon dioxide, 8.5-9.5 parts of graphene oxide, 1.1-1.4 parts of polyoxyethylene, 0.9-1.7 parts of stabilizer, 65-75 parts of coagulant and 2.5-3.5 parts of defoaming agent.

3. The nitrile gloves of claim 1, wherein the nitrile gloves further comprise the following raw materials in parts by weight: 4-6 parts of trimethylolethane, 0.3-0.5 part of dibutyltin dilaurate and 5-7 parts of ethanol.

4. The nitrile gloves of claim 3, wherein the weight ratio of dibutyltin dilaurate to graphene oxide is 1: (23-25); the weight ratio of the trimethylolethane to the carboxylic butyronitrile latex is 1 (10-12).

5. The nitrile glove of claim 1, wherein: the operation of the graphene oxide hydrophobic modification treatment is specifically as follows: uniformly stirring the hydroxy ethyl acrylate, the isophorone diisocyanate and the ethanol in a weight ratio of 1:1.5:3 to obtain a mixture A; adding graphene oxide according to the weight ratio of the graphene oxide to the mixture A of 1:10, uniformly mixing, and stirring and reacting at 60-80 ℃ for 22-24h to obtain the hydrophobically modified graphene oxide.

6. The nitrile gloves of claim 1, wherein the defoamer is prepared from the following raw materials in parts by weight: 30-50 parts of polydimethylsiloxane, 5-10 parts of silicon dioxide aerosol, 6-10 parts of Tween 80 hydrophilic emulsifier, 4-8 parts of span 80 lipophilic emulsifier and 600 parts of deionized water 450-.

7. The nitrile glove of claim 6, wherein: the weight ratio of the silica aerosol to the polydimethylsiloxane is 1: (5-7).

8. The butyronitrile glove of claim 1, wherein the coagulant is prepared from the following raw materials in parts by weight: 9-13 parts of calcium nitrate, 0.6-1 part of starch, 0.03-0.07 part of lignosulfonate and 84-88 parts of deionized water.

9. A process for forming nitrile gloves according to any one of claims 1 to 8, characterized in that it comprises the following operating steps:

preparing materials: mixing the raw materials of the butyronitrile gloves for removing the coagulant, and uniformly stirring to obtain butyronitrile latex;

cleaning the hand mold;

dipping: immersing the cleaned hand mould into a coagulant tank, controlling the temperature of the coagulant at 60 ℃, and drying after the impregnation is finished;

gum dipping: dipping the hand mold after dipping treatment into butyronitrile latex for dipping, and then drying for the first time, washing with water and drying for the second time;

and (3) sequentially carrying out lip rolling, drying, cooling, chlorine washing, water washing, drying and demoulding on the hand mould subjected to the gum dipping treatment to obtain the butyronitrile gloves.

Technical Field

The application relates to the technical field of butyronitrile production, in particular to butyronitrile gloves and a molding process thereof.

Background

Of the rubber gloves, latex gloves and nitrile gloves are most common. The latex gloves are made of natural latex, although the latex gloves have the advantages of good abrasion resistance and good puncture resistance, the latex gloves are weak in chemical resistance and low in corrosion resistance and oil resistance, and meanwhile, the raw materials of the latex gloves contain the natural latex, so that a lot of human latex allergy is easily caused.

The main raw materials of the butyronitrile gloves are butadiene and acrylonitrile, the butadiene and the acrylonitrile are polymerized to form butyronitrile latex, and the butyronitrile latex does not contain protein, amino compounds and other harmful substances and rarely causes skin allergy. Because the polymer molecular chain of the nitrile latex contains nitrile groups, the nitrile gloves have certain oil resistance, alkali resistance and heat resistance, and can resist the corrosion of corrosive substances such as different solvents, petroleum and the like. Therefore, the butyronitrile gloves have wide application range and can be applied to various fields such as electronics, medical examination, food processing, chemical engineering and the like.

In the related technology, the butyronitrile gloves are mainly made of butyronitrile latex, deionized water, potassium hydroxide, an antistatic agent and other raw materials, have a good antistatic effect, are high in cleanliness and good in washability, but are weak in elasticity.

Disclosure of Invention

In order to improve the elasticity of the butyronitrile gloves, the application provides the butyronitrile gloves and a forming process thereof.

In a first aspect, the application provides a butyronitrile glove, which adopts the following technical scheme:

the butyronitrile gloves are prepared from the following raw materials in parts by weight: 45-57 parts of carboxylic butyronitrile latex, 3-7 parts of sulfur, 7-9 parts of zinc oxide, 2-4 parts of potassium hydroxide, 9-18 parts of deionized water, 8-12 parts of titanium dioxide, 3-5 parts of lipophilic nano silicon dioxide, 8-10 parts of graphene oxide, 1-1.5 parts of polyoxyethylene, 0.5-2 parts of stabilizer, 60-80 parts of coagulant and 2-4 parts of defoamer; the graphene oxide is obtained by performing hydrophobic modification treatment.

By adopting the technical scheme, the carboxylic acrylonitrile butadiene latex is obtained by modifying acrylonitrile butadiene latex through acrylonitrile or acrylic acid, and comprises acrylonitrile, butadiene and a third monomer containing hydroxyl and carboxyl; the carboxylic butyronitrile latex is easy to crosslink with sulfur and zinc oxide, thereby improving the elasticity, durability and water resistance of the butyronitrile gloves. The sulfur vulcanizes the carboxylic butadiene-acrylonitrile latex, and the sulfur and unsaturated double bonds of butadiene of the carboxylic butadiene-acrylonitrile latex form covalent bonds, so that a network structure is formed by crosslinking, and the durability and the waterproofness of the nitrile gloves can be improved. The zinc oxide can be crosslinked with the carboxylic butyronitrile latex to form a firm zinc ionic bond, so that the strength and the elasticity of the butyronitrile gloves can be greatly improved; in addition, zinc oxide can also be used as an activator for vulcanization crosslinking to accelerate vulcanization reaction, so that the tensile strength and the elongation of the glove are improved, and the flexibility of the butyronitrile glove can be improved after the carboxyl with the particle size of less than 50 mu m and the zinc oxide are crosslinked. The potassium hydroxide water solution can also play a role in adjusting the pH value while dissolving the zinc oxide. The titanium dioxide can increase the solubility of zinc oxide in liquid phase, promote the dissolution of zinc oxide, and has shielding property, so that the finished product is opaque.

The oleophylic nano silicon dioxide can play a role in filling in the carboxylated butyronitrile latex, so that the strength of the butyronitrile gloves is improved, and meanwhile, the oleophylic nano silicon dioxide can also improve the dispersibility of graphene in a system and the stability and the surface strength of a graphene film. The carboxyl butyronitrile latex is added with graphene oxide to form a film with high elastic strength, so that the elasticity of the butyronitrile gloves is improved. Meanwhile, the graphene oxide has excellent electrical properties and can play a certain role in static resistance and flame retardance.

Polyethylene oxide is added as an antistatic agent, so that the antistatic effect of the butyronitrile gloves can be improved. The stabilizer is used for adjusting the coagulation time of the latex so as to shorten the flowing time of the latex on a hand former and has excellent wetting and dispersing properties. The coagulant can provide a polymerization point on the hand mold and can control the thickness of the latex coagulated on the hand mold. The carboxyl butyronitrile latex contains a large amount of surfactant components, so that a large amount of bubbles are contained in the latex during processing and are not easy to dissipate, the defoaming agent is diffused in the foam by adding the defoaming agent, a double-layer film is formed on the wall of the foam during diffusion, the surfactant with a stabilizing effect is discharged in the diffusion process, the tension of the local surface of the foam surface is reduced, the self-healing capability of the foam is damaged, the foam is broken, the generation of bubbles is reduced, the generation of surface pinholes of butyronitrile gloves is reduced, and the elasticity of the gloves is improved.

Preferably, the method comprises the following steps: the composition is prepared from the following raw materials in parts by weight: 48-54 parts of carboxylic butyronitrile latex, 4-6 parts of sulfur, 7.5-8.5 parts of zinc oxide, 2.5-3.5 parts of potassium hydroxide, 12-14 parts of deionized water, 9-11 parts of titanium dioxide, 3.5-4.5 parts of oleophylic nano silicon dioxide, 8.5-9.5 parts of graphene oxide, 1.1-1.4 parts of polyoxyethylene, 0.9-1.7 parts of stabilizer, 65-75 parts of coagulant and 2.5-3.5 parts of defoaming agent.

Preferably, the method comprises the following steps: the butyronitrile gloves also comprise the following raw materials in parts by weight: 4-6 parts of trimethylolethane, 0.3-0.5 part of dibutyltin dilaurate and 5-7 parts of ethanol.

Preferably, the method comprises the following steps: the weight ratio of dibutyltin dilaurate to graphene oxide is 1: (23-25); the weight ratio of the trimethylolethane to the carboxylic butyronitrile latex is 1 (10-12).

By adopting the technical scheme, the trimethylolethane is multifunctional neopentane structural polyol with three high-reactivity hydroxyl groups, and can form an elastomer with butadiene, so that the elasticity of the butyronitrile gloves is improved. Dibutyltin dilaurate can promote the crosslinking reaction of graphene oxide and carboxyl butyronitrile latex, and the elasticity of the butyronitrile gloves is improved.

Preferably, the method comprises the following steps: the operation of the graphene oxide hydrophobic modification treatment is specifically as follows: uniformly stirring the hydroxy ethyl acrylate, the isophorone diisocyanate and the ethanol in a weight ratio of 1:1.5:3 to obtain a mixture A; adding graphene oxide according to the weight ratio of the graphene oxide to the mixture A of 1:10, uniformly mixing, and stirring and reacting at 60-80 ℃ for 22-24h to obtain the hydrophobically modified graphene oxide.

By adopting the technical scheme, the graphene powder has small particle size, large surface area and high surface energy, so that strong interaction force exists among the sheets, and the sheets are easy to agglomerate; in addition, the carboxyl butyronitrile latex has high viscosity, so that the carboxyl butyronitrile latex can be dispersed in the stirring process, but can be agglomerated again after being stirred, and the uniform dispersion of the graphene in the glove matrix is difficult to achieve. The graphene oxide layer contains a large number of hydroxyl functional groups, hydroxyethyl acrylate and isocyanate are added to react with graphene oxide to generate ester, a hydrophobic polymer chain can be grafted on the surface of the graphene oxide, and the graphene oxide is subjected to hydrophobic oleophylic modification, so that the graphene oxide can be uniformly dispersed in a glove matrix, the agglomeration is reduced, the effect of the graphene oxide in raw materials of butyronitrile gloves is improved, and the elasticity of the butyronitrile gloves is improved.

Preferably, the method comprises the following steps: the defoaming agent is prepared from the following raw materials in parts by weight: 30-50 parts of polydimethylsiloxane, 5-10 parts of silicon dioxide aerosol, 6-10 parts of Tween 80 hydrophilic emulsifier, 4-8 parts of span 80 lipophilic emulsifier and 600 parts of deionized water 450-.

By adopting the technical scheme, the polydimethylsiloxane is also called dimethyl silicone oil and is hydrophobic organic silicon, and has the function of inhibiting and eliminating bubbles in the matrix. The defoaming effect of the polydimethylsiloxane can be enhanced by adding the silicon dioxide aerosol, and the silicon dioxide aerosol is brought to the air-water interface of the foam by the polydimethylsiloxane and enters a bubble liquid film. Due to the hydrophobicity, the contact angle of the foaming liquid drop of the surfactant is larger than 90 degrees, so that the foaming liquid is forced to be discharged from the surface of the solid hydrophobic particle, and the local quick drainage of the foam is caused, and the foam is broken. The two have synergistic effect. The addition of the Tween 80 hydrophilic emulsifier and the span 80 lipophilic emulsifier enables polydimethylsiloxane and silicon dioxide aerosol to be dispersed more uniformly in the system.

Preferably, the method comprises the following steps: the weight ratio of the silica aerosol to the polydimethylsiloxane is 1: (5-7).

Preferably, the method comprises the following steps: the coagulant is prepared from the following raw materials in parts by weight: 9-13 parts of calcium nitrate, 0.6-1 part of starch, 0.03-0.07 part of lignosulfonate and 84-88 parts of deionized water.

By adopting the technical scheme, the particles in the calcium nitrate can neutralize the charges of the colloid particles, so that the fluidity of the latex is reduced, the latex is solidified on the hand model, the starch enables the coagulant to be more viscous after being prepared, the coagulant is convenient to stick on the surface of the hand model, and the coagulant on the surface of the hand model is more uniform. The lignosulfonate can be used as a surfactant to improve the fluidity of the calcium nitrate and the starch in an aqueous solution, so that the calcium nitrate and the starch are dispersed in a system more uniformly.

In a second aspect, the application provides a molding process of any one of the nitrile gloves, which is specifically realized by the following technical scheme:

a molding process of nitrile gloves comprises the following operation steps:

preparing materials: mixing the raw materials of the butyronitrile gloves for removing the coagulant, and uniformly stirring to obtain butyronitrile latex;

cleaning the hand mold;

dipping: immersing the cleaned hand mould into a coagulant tank, controlling the temperature of the coagulant at 60 ℃, and drying after the impregnation is finished;

gum dipping: dipping the hand mold after dipping treatment into butyronitrile latex for dipping, and then drying for the first time, washing with water and drying for the second time;

and (3) sequentially carrying out lip rolling, drying, cooling, chlorine washing, water washing, drying and demoulding on the impregnated hand mould to obtain the butyronitrile gloves.

By adopting the technical scheme, the hand model is polluted by inorganic matters such as water scale and the like through acid washing, and is polluted by organic matters such as bacteria, microorganisms and the like through alkali washing, so that the sanitation of the hand model is ensured. The required thickness of the adhesive film can be achieved by the dipping of the coagulant. The powder of the gloves can be reduced after the gloves are washed by chlorine, meanwhile, the stickiness on the surfaces of the gloves can be reduced by the chlorine washing, the gloves are convenient to wear, the chlorine can react with the latex in the chlorine washing, the protein content of the latex is reduced, and the probability of latex allergy can be reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) the properties of elongation at break, tensile strength, 300% stress at definite elongation, friction resistance and tear resistance of the butyronitrile gloves are superior to those of the butyronitrile gloves of comparative examples 1-6, the elongation at break of the butyronitrile gloves can reach 547%, the tensile strength reaches 42MPa, the 300% stress at definite elongation reaches 5.9MPa, and the butyronitrile gloves show excellent elastic properties.

(2) The butyronitrile gloves have excellent friction resistance and tear resistance, and the service life of the butyronitrile gloves is prolonged.

Detailed Description

The present application will be described in further detail with reference to specific examples.

The following raw materials in the application are all commercially available products, and specifically: the carboxylic butyronitrile latex is selected from Zibo co-invasive chemical Co., Ltd; the oleophylic nano-silica is selected from Jinan Jinchuan chemical industry Co., Ltd, and has a particle size of 20 nm; the graphene oxide is selected from Shanghai Moguo nano science and technology limited, the content of active substances is 99.5, and the type is MG-GO-01; the polyoxyethylene is selected from Shandong Guangshi electronic technology Co., Ltd, and the content of the effective substance is 99%; the polydimethylsiloxane is selected from Jinan silicon harbor chemical industry Co., Ltd; the silicon dioxide aerosol is selected from Shanghai Bei Qingli industry development Limited company, the content of active substances is 99 percent, and the model RB12 is; the stabilizer is alkylphenol polyoxyethylene ether selected from Shandong Kepler Biotech limited company, and has an effective substance content of 99%. The rest of the raw materials which are not listed are also the conventional products sold in the market.

The following are examples of the preparation of the coagulant in the present application:

preparation example 1

The concrete preparation operations of the coagulant in the application are as follows:

1. according to the mixing amount shown in the table 1, slowly adding calcium nitrate into deionized water, stirring and dissolving, then adding starch and sodium lignosulfonate, and uniformly stirring to obtain the coagulant.

Preparation examples 2 to 5

The coagulants of preparation examples 2 to 5 were prepared in the same manner as in preparation example 1 except that the raw material components were different, and the details are shown in Table 1.

TABLE 1 preparation examples 1 to 5 blending amounts (unit: g) of respective raw materials of coagulant

The following are examples of the preparation of the defoaming agent in the present application:

preparation example 6

The specific preparation operation of the defoaming agent in the application is as follows:

stirring polydimethylsiloxane and silicon dioxide aerosol at a high speed for 4 hours at 150 ℃, and cooling to 23 ℃ to obtain a mixture A; uniformly mixing the Tween 80 hydrophilic emulsifier and the span 80 lipophilic emulsifier, then adding the mixture A, uniformly stirring, adding deionized water during stirring, and waiting until white or light yellow viscous emulsion is obtained, namely the defoaming agent.

Preparation examples 7 to 10

The defoaming agents of preparation examples 7 to 10 were prepared in the same manner as in preparation example 6, except that the raw material components were different, as shown in Table 2.

TABLE 2 preparation examples 7 to 10 Defoamer mixing amounts of raw materials (unit: g)

Preparation examples 11 to 15

The defoaming agents of preparation examples 11 to 15 were prepared in the same manner as in preparation example 8, except that the raw material components were different, as shown in Table 3.

TABLE 3 preparation examples 11 to 15 Defoamer blending amounts of raw materials (unit: g)

The following are preparation examples of graphene oxide modification treatment of the present application:

preparation example 16

Adding hydroxyethyl acrylate and isophorone diisocyanate into ethanol according to the weight ratio of 1:1.5:3 of the hydroxyethyl acrylate, the isophorone diisocyanate and the ethanol, and uniformly stirring to obtain a mixture A; and then slowly adding graphene oxide according to the weight ratio of 1:10 of the graphene oxide to the mixture A, uniformly mixing, and stirring and reacting for 24 hours at the temperature of 80 ℃ to obtain the hydrophobically modified graphene oxide.

Example 1

A butyronitrile glove is prepared by the following operation steps.

Preparing materials: according to the mixing amount shown in the table 4, firstly, potassium hydroxide is dissolved in deionized water to obtain a solution A;

mixing the solution A, the carboxylated butyronitrile latex, sulfur, zinc oxide, titanium dioxide, lipophilic nano-silica, the graphene oxide prepared in preparation example 16, polyethylene oxide, alkylphenol polyoxyethylene ether and the defoaming agent prepared in preparation example 6, and uniformly stirring to obtain the butyronitrile latex;

cleaning the hand model: cleaning the hand mould in an acid solution with the pH value of 2.6, water and an alkaline solution with the pH value of 12 in sequence, and then drying the hand mould at the temperature of 45 ℃;

dipping: placing the coagulant prepared in the preparation example 1 into a coagulant tank, controlling the temperature of the coagulant at 60 ℃, then immersing the cleaned hand mold into the coagulant tank, and then drying at 90 ℃;

gum dipping: dipping the hand mold after dipping treatment into butyronitrile latex for dipping, controlling the temperature of the butyronitrile latex at 25 ℃, drying, washing with water and drying;

and (3) sequentially carrying out lip rolling, drying, cooling, chlorine washing, water washing, drying and demoulding on the hand mould subjected to the gum dipping treatment to obtain the butyronitrile gloves.

Examples 2 to 5

The butyronitrile gloves of the embodiments 2 to 5 have the same preparation method and the same types of raw materials as those of the embodiment 1, except that: the mixing amount of each raw material is different, and the details are shown in table 4.

TABLE 4 blending amounts (unit: kg) of raw materials of the butyronitrile gloves of examples 1 to 5

Example 6

A butyronitrile glove is prepared by the following operation steps.

Preparing materials: according to the mixing amount shown in the table 5, firstly, potassium hydroxide is dissolved in deionized water to obtain a solution A; dissolving trimethylolethane and dibutyltin dilaurate in ethanol to obtain a solution B;

mixing the solution A, the solution B, the carboxylated butyronitrile latex, sulfur, zinc oxide, titanium dioxide, oleophylic nano-silica, the graphene oxide prepared in the preparation example 16, polyethylene oxide and alkylphenol polyoxyethylene ether with the defoaming agent prepared in the preparation example 6, and uniformly stirring to obtain the butyronitrile latex;

cleaning the hand model: washing the hand mold in an acidic solution with pH of 2.6, water, an alkaline solution with pH of 12 and water, and drying at 45 deg.C;

dipping: placing the coagulant prepared in the preparation example 1 into a coagulant tank, controlling the temperature of the coagulant at 60 ℃, then immersing the cleaned hand mold into the coagulant tank, and then drying at 90 ℃;

gum dipping: dipping the hand mold after gum dipping into butyronitrile latex for gum dipping, controlling the temperature of the latex at 25 ℃, drying, washing with water and drying;

and (3) sequentially carrying out lip rolling, drying, cooling, chlorine washing, water washing, drying and demoulding on the impregnated hand mould to obtain the butyronitrile gloves.

Examples 7 to 10

The nitrile gloves of examples 7-10 were prepared identically to example 6, except that: the coagulants in the raw materials of the butyronitrile gloves are sequentially selected from the coagulants prepared in preparation examples 2-5, the mixing amount of the raw materials is different, and the details are shown in table 5.

TABLE 5 blending amounts (unit: kg) of raw materials of the butyronitrile gloves of examples 6 to 10

Examples 11 to 15

The nitrile gloves of examples 11-15 were prepared according to the same method and using the same raw materials as those of example 8, except that: the mixing amount of each raw material is different, and the details are shown in table 6.

TABLE 6 blending amounts (unit: kg) of raw materials of the butyronitrile gloves of examples 11 to 15

Examples 16 to 20

The nitrile gloves of examples 16-20 were prepared according to the same method and using the same raw materials as those of example 12, except that: the mixing amount of each raw material is different, and the details are shown in table 7.

TABLE 7 blending amounts (unit: kg) of raw materials of the butyronitrile gloves of examples 16 to 20

Examples 21 to 29

The nitrile gloves of examples 21 to 29 were prepared in the same manner as in example 17 except that the defoaming agents of examples 7 to 15 were used in the same order as the defoaming agents of example 17, and the remaining raw materials and the amounts thereof were the same as in example 17.

Comparative example 1

The nitrile glove of comparative example 1 was prepared exactly the same as example 6, except that: graphene oxide was not added to the raw materials, and the remaining raw materials and the amounts of the added raw materials were the same as those in example 6.

Comparative example 2

The nitrile glove of comparative example 2 was prepared exactly the same as example 6, except that: oleophylic nano-silica is not added in the raw materials, and the other raw materials and the mixing amount are the same as those in the example 6.

Comparative example 3

The nitrile glove of comparative example 3 was prepared exactly the same as example 6, except that: titanium dioxide was not added to the raw materials, and the other raw materials and the blending amount were the same as in example 6.

Comparative example 4

The nitrile glove of comparative example 4 was prepared exactly as in example 6, except that: no stabilizer was added to the raw materials, and the other raw materials and the blending amount were the same as in example 6.

Comparative example 5

The nitrile glove of comparative example 5 was prepared exactly the same as example 6, except that: the raw materials were not added with a defoaming agent, and the other raw materials and the blending amount were the same as those in example 6.

Comparative example 6

The nitrile glove of comparative example 6 was prepared exactly the same as example 6 except that: graphene oxide in the raw material was not subjected to hydrophobic modification treatment, and the remaining raw materials and the doping amount were the same as those in example 6.

Performance detection

The nitrile gloves of examples 1 to 29, comparative examples 1 to 6 were subjected to property tests for elongation at break, tensile strength and 300% stress at elongation, according to the standards of GB/T13022-1991 "test methods for tensile Properties of Plastic films", respectively, and the test results are shown in Table 8.

The nitrile gloves of examples 1-29 and comparative examples 1-6 were tested for abrasion and tear resistance using the performance criteria of GB/T2441-2009 gloves for protection against mechanical hazards for hand protection, the test results are shown in Table 8.

TABLE 8 Performance test results for different nitrile gloves

The results of the tests in Table 8 show that the nitrile gloves of examples 1-29 all have better properties of elongation at break, tensile strength, 300% stress at definite elongation, friction resistance and tear resistance than the nitrile gloves of comparative examples 1-6, and the nitrile gloves of example 26 have elongation at break as high as 547%, tensile strength of 42MPa and 300% stress at definite elongation of 5.9MPa, showing excellent elastic properties.

The elongation at break, tensile strength, friction resistance and tear resistance of the butyronitrile gloves of examples 1-5 are all significantly lower than those of the butyronitrile gloves of examples 6-29, which shows that the elasticity, wear resistance and strength of the butyronitrile gloves are improved after trimethylolethane, dibutyltin dilaurate and ethanol are added into raw materials of the butyronitrile gloves. The elongation at break, tensile strength, friction resistance and tear resistance of the nitrile gloves of example 8 are 530%, 35MPa, 7500N and 59N respectively, which are higher than those of examples 6-7 and examples 9-10, and the 300% stress at definite elongation of the nitrile gloves is 6.7N, which is lower than those of examples 6-7 and examples 9-10, which shows that the properties of the nitrile gloves are better when the raw materials of the nitrile gloves of example 8 are mixed according to parts by weight. In example 12, the elongation at break, the tensile strength, the friction resistance and the tear resistance of the butyronitrile gloves are 535%, 38MPa, 7652N and 64N respectively, which are higher than those of examples 11 and 13-15, and the 300% stress at definite elongation is 6.4N which is lower than those of examples 11 and 13-15, which shows that the butyronitrile gloves prepared by using the raw materials of the butyronitrile gloves in the weight ratio of dibutyltin dilaurate to graphene oxide of 1:24 have more excellent performances. The elongation at break, tensile strength, friction resistance and tear resistance of the nitrile gloves of example 17 were 544%, 40MPa, 7803N and 68N, respectively, higher than those of examples 16 and 18-20, and the 300% stress at elongation at break was 6.1N, respectively, lower than those of examples 16 and 18-20, indicating that the nitrile gloves produced when the weight ratio of trimethylolethane to carboxylated nitrile latex in the nitrile raw materials was 1:11 had higher elasticity and strength. In example 22, the elongation at break, tensile strength, friction resistance and tear resistance of the nitrile gloves are 545%, 41MPa, 7835N and 70N respectively, which are higher than those of examples 21 and 23-25, and the 300% stress at elongation at break of the nitrile gloves is 6.0N, which are lower than those of examples 21 and 23-25, which shows that when the weight ratio of silica aerosol and polydimethylsiloxane in raw materials of the defoaming agent is 1:6, the prepared nitrile gloves have higher elasticity and strength and better comprehensive performance effect.

According to the performance data detected by the butyronitrile gloves in the comparative examples 1-6, the addition of the graphene oxide in the raw materials of the butyronitrile gloves and the modification of the graphene oxide can greatly improve the performances of the butyronitrile gloves and improve the elasticity of the butyronitrile gloves. The nanometer titanium dioxide, the stabilizer and the defoaming agent added in the raw materials improve the elasticity and the strength of the butyronitrile gloves.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.