阅读说明：本技术 一种氯丁-丁腈复合手套及其制备方法 (Chloroprene-butyronitrile composite glove and preparation method thereof ) 是由 刘方毅 池永涛 李瑞军 孙铭蔚 桂由刚 刘奇 于 2021-09-11 设计创作，主要内容包括：本发明属于胶乳手套制备技术领域,具体涉及一种氯丁-丁腈复合手套及其制备方法,包括以下原料组分：氯丁胶乳、羧基丁腈胶乳、复合胶乳辅料、蓝色浆和适量的水；其制备方法包括：(1)按比例取氯丁胶乳、羧基丁腈胶乳、复合胶乳辅料和水,分散搅拌10～20h；(2)将手套模型浸渍于凝固剂溶液后,取出烘干,再浸渍于混合胶乳中,取出烘干,硫化,热水沥滤,氯洗,烘干,脱模,即得。本发明各原料配比计量准确,生产成本低,制得的手套光滑度高,穿戴舒适,回弹性好,拉伸强度达25MPa以上,断裂伸长率达750％以上,手套废品率低于0.2％。(The invention belongs to the technical field of latex glove preparation, and particularly relates to a neoprene-butyronitrile composite glove and a preparation method thereof, wherein the neoprene-butyronitrile composite glove comprises the following raw material components: neoprene latex, carboxylic acrylonitrile butadiene latex, a composite latex auxiliary material, blue paste and a proper amount of water; the preparation method comprises the following steps: (1) taking neoprene latex, carboxylic acrylonitrile butadiene latex, a composite latex auxiliary material and water according to a proportion, and dispersing and stirring for 10-20 hours; (2) and (3) dipping the glove model into a coagulant solution, taking out and drying, dipping the glove model into mixed latex, taking out and drying, vulcanizing, leaching with hot water, washing with chlorine, drying, and demolding to obtain the glove. The raw materials of the invention are accurately proportioned and measured, the production cost is low, the produced gloves have high smoothness, comfortable wearing, good rebound resilience, tensile strength of more than 25MPa, elongation at break of more than 750 percent and rejection rate of less than 0.2 percent.)

1. The neoprene-butyronitrile composite glove is characterized by comprising the following raw material components in parts by weight: 50-70 parts of neoprene latex, 30-50 parts of carboxylated butyronitrile latex, 5-10 parts of composite latex auxiliary materials, 0.1-0.8 part of blue paste and 240-260 parts of a proper amount of water.

2. The neoprene-nitrile composite glove of claim 1, wherein the composite latex auxiliary material comprises the following raw material components in parts by weight: 5-10 parts of zinc oxide powder, 1-8 parts of sulfur powder, 0.5-3 parts of accelerator BZ powder, 1-10 parts of accelerator CA powder, 1-5 parts of titanium dioxide, 0.1-3 parts of anti-aging agent powder, 0.1-1.5 parts of dispersing agent powder and 8-40 parts of water.

3. The neoprene-nitrile composite glove of claim 2, wherein the composite latex auxiliary material comprises the following raw material components in parts by weight: 5-10 parts of zinc oxide powder, 1-1.5 parts of sulfur powder, 0.5-1.5 parts of accelerator BZ powder, 1-5 parts of accelerator CA powder, 1-5 parts of titanium dioxide, 0.1-1 part of anti-aging agent powder, 0.1-1.5 parts of dispersing agent powder and 8-26 parts of water.

4. The neoprene-nitrile composite glove of claim 2, wherein the dispersant powder is dispersant NNO and the anti-aging agent powder is anti-aging agent KY-616.

5. The neoprene-nitrile composite glove of claim 2, wherein each of the raw material components has a particle size of 5 μm or less.

6. The neoprene-nitrile composite glove of claim 2, wherein the composite latex excipient is prepared by a method comprising:

(1) weighing the raw material components of claim 2 in proportion, adding the raw material components into a dispersion stirring tank, adding the water, and performing dispersion stirring for 10-25 hours to obtain a dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 5-10 hours to ensure that the particle size of powder in the dispersion liquid is less than or equal to 5 mu m, thereby obtaining the composite latex auxiliary material, wherein the solid content of the composite latex auxiliary material is 40-60%.

7. A method of making a neoprene-nitrile composite glove of claim 1 comprising the steps of:

(1) taking the neoprene latex, the carboxylated nitrile latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 10-20 hours;

(2) and (3) dipping the glove model into a coagulant solution, taking out and drying, dipping the glove model into mixed latex, taking out and drying, vulcanizing, leaching with hot water, washing with chlorine, drying, and demolding to obtain the chloroprene-butyronitrile composite high-elasticity glove.

8. The method for preparing a neoprene-butyronitrile composite glove according to claim 7, wherein, in the step (2), the coagulant solution comprises a soluble salt, a mold release agent and water; the weight ratio of the soluble salt to the release agent to the water is as follows: 6-12: 0.5-1.5: 70-90; the soluble salt is one or more than two of calcium nitrate, calcium chloride, magnesium nitrate, magnesium chloride, zinc nitrate and zinc chloride.

9. The method for preparing the neoprene-nitrile composite gloves according to claim 7, wherein in the step (2), the glove form is heated to 50 to 70 ℃, and then dipped in the coagulant solution at a temperature of 22 to 28 ℃, and when dipped in the hybrid latex, the temperature of the glove form is 50 to 70 ℃.

10. The method for preparing the neoprene-butyronitrile composite glove according to claim 7, wherein the vulcanization temperature in the step (2) is 105 to 135 ℃, the vulcanization time is 0.3 to 0.6h, and the hot water leaching temperature is 40 to 60 ℃.

Technical Field

The invention belongs to the technical field of latex glove preparation, and particularly relates to a neoprene-butyronitrile composite glove and a preparation method thereof.

Background

The natural latex and the synthetic latex have various varieties and are widely applied to the daily life, medical treatment and health, meteorological detection, electronic industry and other aspects of people.

The dipping products of the latex are mainly surgical medical gloves, oxygen bags, catheters, tourniquets, condoms, finger cots, industrial gloves, household gloves, insulating gloves, balloons and the like. Although natural latex gloves are used in a wide variety of applications, ranging from surgical gloves to hand-protective household gloves, they are more expensive and complex than synthetic latex gloves. Natural latex and its products are mainly used latex, but due to the presence of casein in natural latex, skin allergy-contact rubella disease is easily caused, and unpleasant odor is easily generated. The synthetic latex mainly comprises chloroprene, chlorobenzene, butyronitrile and blends thereof, and the like, because the latex products can not cause skin allergy due to the existence of protein, the oil resistance and the chemical resistance are excellent, the latex products are superior to natural latex products in oxygen resistance, ozonization resistance, low permeability and penetration resistance, the hand feeling is the same as that of natural latex products, the price is lower, and the process is relatively simple.

Neoprene and nitrile latex and products are industrialized, and the physical properties of neoprene latex glove products greatly exceed those of nitrile products. Therefore, the neoprene latex dairy products are a great direction for research and development at present. The neoprene latex gloves have good heat resistance, weather resistance, ozone resistance, chemical medium resistance and air tightness, and simultaneously have good performances of alpha particle prevention, radiation protection, tritium permeation resistance and the like, and the toughness and the elasticity of the neoprene latex gloves are close to those of natural latex products, and the elasticity of the neoprene latex gloves is twice of that of the most widely used butyronitrile latex products at present.

However, neoprene latex is expensive and prone to blocking is a major problem with its limited development. Therefore, the technical key of developing the neoprene latex and products is to fully play the advantages of the neoprene latex and avoid and overcome the defects of the neoprene latex.

Disclosure of Invention

One of the purposes of the invention is to provide the neoprene-butyronitrile composite glove which has accurate proportion, low production cost, high smoothness, comfortable wearing and good rebound resilience.

In order to achieve the technical purpose, the technical scheme of the invention is as follows:

the neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 50-70 parts of neoprene latex, 30-50 parts of carboxylated butyronitrile latex, 5-10 parts of composite latex auxiliary material, blue paste and water.

As an improvement, the auxiliary material of the composite latex comprises the following raw material components in parts by weight: 5-10 parts of zinc oxide powder, 1-8 parts of sulfur powder, 0.5-3 parts of accelerator BZ powder, 1-10 parts of accelerator CA powder, 1-5 parts of titanium dioxide, 0.1-3 parts of anti-aging agent powder, 0.1-1.5 parts of dispersing agent powder and 8-40 parts of water.

As a further improvement, the auxiliary materials of the composite latex comprise the following raw materials in parts by weight: 5-10 parts of zinc oxide powder, 1-1.5 parts of sulfur powder, 0.5-1.5 parts of accelerator BZ powder, 1-5 parts of accelerator CA powder, 1-5 parts of titanium dioxide, 0.1-1 part of anti-aging agent powder, 0.1-1.5 parts of dispersing agent powder and 8-26 parts of water.

The zinc oxide powder in the composite latex auxiliary material has good activation performance, is a vulcanization accelerator, and mainly shortens the vulcanization time, improves the vulcanization efficiency and obviously reduces the rubber material cost; the accelerator BZ powder and the accelerator CA powder simultaneously have the anti-aging effect, and can improve the anti-aging performance of the prevulcanized latex; the titanium dioxide has excellent covering power and color fastness, and can increase the strength and smoothness of the gloves and enhance the performance of the gloves; the anti-aging agent powder can delay the aging of the gloves and prolong the service life of the gloves.

Preferably, the dispersant powder is a dispersant NNO, and the antioxidant powder is an antioxidant KY-616. The raw materials used in the prior art are raw material latexes, and dispersing agents are used in the raw material latexes to prepare dispersed emulsions, so the raw material latexes can be used after being mixed at the same time. The anti-aging agent KY-616 is a high-activity anti-aging agent, not only is a food grade anti-aging agent, but also has good color protection and anti-oxidation effects.

As a further improvement, the particle size of each raw material component is less than or equal to 5 μm. Compared with the prior art, the fineness and the grain size of the imported latex are about 30 mu m, the fineness and the grain size of the imported latex are greatly reduced, so that the gloves prepared by the method are used for preparing the chloroprene-butyronitrile composite gloves, the smoothness of the obtained gloves is high, and the rejection rate of the gloves is less than or equal to 0.2%.

As a further improvement, the composite latex auxiliary material is prepared by the following method:

(1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding the water, and performing dispersion stirring for 10-25 hours to obtain a dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 5-10 hours to ensure that the particle size of powder in the dispersion liquid is less than or equal to 6 mu m, thereby obtaining the composite latex auxiliary material, wherein the solid content of the composite latex auxiliary material is 40-60%.

The invention also aims to provide a preparation method of the neoprene-butyronitrile composite gloves, which comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 10-20 hours;

(2) and (3) dipping the glove model into a coagulant solution, taking out and drying, dipping the glove model into the mixed latex, taking out and drying, vulcanizing, leaching with hot water, washing with chlorine, drying, and demolding to obtain the chloroprene-butyronitrile composite high-elasticity glove.

As a modification, in the step (2), the coagulant solution comprises soluble salt, a release agent and water; the weight ratio of the soluble salt to the release agent to the water is as follows: 6-12: 0.5-1.5: 70-90; the soluble salt is one or more than two of calcium nitrate, calcium chloride, magnesium nitrate, magnesium chloride, zinc nitrate and zinc chloride.

As an improvement, in the step (2), the glove model is heated to 50-70 ℃, and then dipped in the coagulant solution at a temperature of about 22-28 ℃ and dipped in the mixed latex, wherein the temperature of the glove model is 50-70 ℃.

As an improvement, in the step (2), the temperature of the vulcanization is 105-135 ℃, the time of the vulcanization is 0.3-0.6 h, and the temperature of the hot water leaching is 40-60 ℃.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the neoprene-butyronitrile composite glove provided by the invention, various raw materials in the auxiliary material formula of the composite latex use powder, so that the metering is easier and more accurate, the quality of the prepared auxiliary material latex is more stable, the problem that the glove thickness is not uniform due to uneven dipping of pure neoprene latex is solved, and after the neoprene latex and the butyronitrile latex are compounded, the cost is reduced compared with that of the pure neoprene latex glove, the prepared neoprene-butyronitrile composite glove has high smoothness, ultrahigh resilience and low cost;

2. the common pure butyronitrile gloves generally have the tensile strength of about 20MPa and the elongation of 400-500%; the chloroprene-butyronitrile composite high-elasticity glove prepared by the invention has the advantages that the tensile strength is more than or equal to 25MPa, the elongation of the glove is more than or equal to 750 percent, and the tensile strength and the elongation at break are obviously improved compared with those of the common pure butyronitrile glove.

Detailed Description

The present invention will be further described with reference to the following embodiments.

Example 1

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 50 parts of neoprene latex, 40 parts of carboxylic butyronitrile latex, 8 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 5 parts of zinc oxide powder, 1 part of sulfur powder, 0.8 part of accelerator BZ powder, 2 parts of accelerator CA powder, 2 parts of titanium dioxide, 0.5 part of antioxidant powder, 0.5 part of dispersing agent powder and 11.8 parts of water, wherein the particle size of each raw material component is 3-5 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 12h to obtain dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 5 hours to ensure that the particle size of powder in the dispersion liquid is 3-5 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 10 hours;

(2) heating the glove model to 50 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 50 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 105 ℃ for 0.6h, leaching with hot water, keeping the temperature of the hot water at 40 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this embodiment, the coagulant solution includes soluble salt, release agent, and water, the weight ratio of the soluble salt, the release agent, and the water is 6:1:70, and the soluble salt is calcium nitrate.

Example 2

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 55 parts of neoprene latex, 45 parts of carboxylic butyronitrile latex, 7 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 6 parts of zinc oxide powder, 1 part of sulfur powder, 6 parts of promoter BZ powder, 2 parts of promoter CA powder, 1 part of titanium dioxide, 0.5 part of anti-aging agent powder, 0.5 part of dispersing agent powder and 12 parts of water, wherein the particle size of each raw material component is 2-4 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 18h to obtain a dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 6 hours to ensure that the particle size of powder in the dispersion liquid is 2-4 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 12 hours;

(2) heating the glove model to 55 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 55 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 110 ℃ for 0.5h, leaching with hot water, keeping the temperature of the hot water at 45 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this example, the coagulant solution includes soluble salt, release agent, and water, the weight ratio of the soluble salt, the release agent, and the water is 7:1.5:75, and the soluble salt is a mixture of calcium chloride and magnesium chloride.

Example 3

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 60 parts of neoprene latex, 35 parts of carboxylic butyronitrile latex, 6 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 6 parts of zinc oxide powder, 1.2 parts of sulfur powder, 1 part of accelerator BZ powder, 2.5 parts of accelerator CA powder, 3 parts of titanium dioxide, 0.4 part of antioxidant powder, 0.6 part of dispersing agent powder and 14.7 parts of water, wherein the particle size of each raw material component is 2-5 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 16h to obtain a dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 7 hours to ensure that the particle size of powder in the dispersion liquid is 3-5 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 14 hours;

(2) heating the glove model to 60 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 60 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 115 ℃ for 0.4h, leaching with hot water, keeping the temperature of the hot water at 50 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this embodiment, the coagulant solution includes soluble salt, release agent, and water, the weight ratio of the soluble salt, the release agent, and the water is 8:1:80, and the soluble salt is magnesium nitrate.

Example 4

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 65 parts of neoprene latex, 32 parts of carboxylic butyronitrile latex, 9 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 6 parts of zinc oxide powder, 1.5 parts of sulfur powder, 1.5 parts of accelerator BZ powder, 3 parts of accelerator CA powder, 4 parts of titanium dioxide, 0.3 part of antioxidant powder, 1 part of dispersant powder and 17.3 parts of water, wherein the particle size of each raw material component is 3-5 microns. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 10 hours to obtain dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 8 hours to ensure that the particle size of powder in the dispersion liquid is 3-5 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 16 hours;

(2) heating the glove model to 65 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 65 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 120 ℃ for 0.4h, leaching with hot water, keeping the temperature of the hot water at 55 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this embodiment, the coagulant solution includes soluble salt, release agent, and water, the weight ratio of the soluble salt, the release agent, and the water is 9:0.5:85, and the soluble salt is zinc nitrate.

Example 5

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 70 parts of neoprene latex, 30 parts of carboxylic butyronitrile latex, 5 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 7 parts of zinc oxide powder, 1.5 parts of sulfur powder, 1.5 parts of accelerator BZ powder, 5 parts of accelerator CA powder, 2 parts of titanium dioxide, 0.5 part of antioxidant powder, 1.5 parts of dispersant powder and 19 parts of water, wherein the particle size of each raw material component is 2-4 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 14 hours to obtain dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 9 hours to ensure that the particle size of powder in the dispersion liquid is 2-4 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 18 hours;

(2) heating the glove model to 68 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 68 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 125 ℃ for 0.3h, leaching with hot water, keeping the temperature of the hot water at 58 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this embodiment, the coagulant solution includes soluble salt, a release agent, and water, the weight ratio of the soluble salt to the release agent to the water is 10:1:90, and the soluble salt is zinc chloride.

Example 6

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 53 parts of neoprene latex, 50 parts of carboxylic acrylonitrile butadiene latex, 10 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 9 parts of zinc oxide powder, 3 parts of sulfur powder, 2 parts of promoter BZ powder, 8 parts of promoter CA powder, 5 parts of titanium dioxide, 2 parts of anti-aging agent powder, 1 part of dispersing agent powder and 30 parts of water, wherein the particle size of each raw material component is 2-4 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 20 hours to obtain dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 10 hours to ensure that the particle size of powder in the dispersion liquid is 2-4 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 15 hours;

(2) heating the glove model to 70 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 70 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 130 ℃ for 0.3h, leaching with hot water, keeping the temperature of the hot water at 60 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this embodiment, the coagulant solution includes soluble salt, a release agent, and water, wherein the weight ratio of the soluble salt to the release agent to the water is 8:1.5:85, and the soluble salt is calcium chloride.

Example 7

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 62 parts of neoprene latex, 8 parts of carboxylic acrylonitrile butadiene latex, 8 parts of composite latex auxiliary material, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 10 parts of zinc oxide powder, 5 parts of sulfur powder, 2.5 parts of promoter BZ powder, 10 parts of promoter CA powder, 4 parts of titanium dioxide, 3 parts of antioxidant powder, 1.5 parts of dispersing agent powder and 37 parts of water, wherein the particle size of each raw material component is 2-3 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 22h to obtain a dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 8 hours to ensure that the particle size of powder in the dispersion liquid is 2-3 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 20 hours;

(2) heating the glove model to 60 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 60 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 135 ℃ for 0.3h, leaching with hot water, keeping the temperature of the hot water at 50 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this example, the coagulant solution includes soluble salt, release agent, and water, the weight ratio of the soluble salt, the release agent, and the water is 7.5:1:75, and the soluble salt is a mixture of magnesium nitrate and zinc nitrate.

Example 8

The neoprene-butyronitrile composite glove comprises the following raw material components in parts by weight: 58 parts of neoprene latex, 7 parts of carboxylic acrylonitrile butadiene latex, 6 parts of composite latex auxiliary materials, blue paste and water.

The composite latex auxiliary material comprises the following raw material components in parts by weight: 7 parts of zinc oxide powder, 8 parts of sulfur powder, 3 parts of promoter BZ powder, 6 parts of promoter CA powder, 5 parts of titanium dioxide, 2.5 parts of anti-aging agent powder, 0.5 part of dispersing agent powder and 32.5 parts of water, wherein the particle size of each raw material component is 3-4 mu m. The composite latex auxiliary material is prepared by the following method: (1) weighing the raw material components in proportion, adding the raw material components into a dispersion stirring tank, adding water, and dispersing and stirring for 25h to obtain a dispersion liquid;

(2) and circularly grinding the dispersion liquid in a sand mill for 6 hours to ensure that the particle size of powder in the dispersion liquid is 3-4 mu m, thus obtaining the powder.

A preparation method of neoprene-butyronitrile composite gloves comprises the following steps:

(1) taking the neoprene latex, the carboxylic acrylonitrile butadiene latex, the composite latex auxiliary material and water according to the proportion, and dispersing and stirring for 17 hours;

(2) heating the glove model to 55 ℃, dipping the glove model in coagulant solution, taking out and drying, keeping the temperature of the glove model at 55 ℃, dipping the glove model in mixed latex, taking out and drying, vulcanizing at 120 ℃ for 0.4h, leaching with hot water, keeping the temperature of the hot water at 55 ℃, washing with chlorine, drying, and demolding to obtain the neoprene-butyronitrile composite high-elastic glove.

In this embodiment, the coagulant solution includes soluble salt, release agent, and water, the weight ratio of the soluble salt, the release agent, and the water is 6:1.5:70, and the soluble salt is a mixture of magnesium nitrate and zinc nitrate.

Test example 1

(1) According to the formula ratio of the composite latex auxiliary material in the embodiment 1, the raw materials are added into a dispersion stirring tank, and water is added for dispersion stirring for 12 hours.

(2) And (2) circularly grinding the dispersion liquid obtained in the step (1) in a sand mill for 5 hours, testing the fineness of the composite latex auxiliary material dispersion liquid by using a laser particle sizer until the particle size of the powder in the dispersion liquid is 3-5 mu m, and stopping grinding to obtain the composite latex auxiliary material. Transferring the prepared composite latex auxiliary material into a storage tank, and standing for 5 days without precipitation.

Test example 2

(1) According to the formula ratio of the composite latex auxiliary material in the embodiment 2, the raw materials are added into a dispersion stirring tank, and water is added for dispersion stirring for 18 hours.

(2) And (2) circularly grinding the dispersion liquid obtained in the step (1) in a sand mill for 6 hours, testing the fineness of the composite latex auxiliary material dispersion liquid by using a laser particle sizer until the particle size of powder in the dispersion liquid is 2-4 mu m, and stopping grinding to obtain the composite latex auxiliary material. Transferring the prepared composite latex auxiliary material into a storage tank, and standing for 4 days without precipitation.

Test example 3

(1) According to the formula ratio of the composite latex auxiliary material in the embodiment 3, the raw materials are added into a dispersion stirring tank, and water is added for dispersion stirring for 16 hours.

(2) And (2) circularly grinding the dispersion liquid obtained in the step (1) in a sand mill for 7 hours, testing the fineness of the composite latex auxiliary material dispersion liquid by using a laser particle sizer until the particle size of powder in the dispersion liquid is 2-5 mu m, and stopping grinding to obtain the composite latex auxiliary material. Transferring the prepared composite latex auxiliary material into a storage tank, and standing for 5 days without precipitation.

Using the neoprene-nitrile composite gloves obtained in examples 1-8, the performance specifications of the gloves are shown in Table 1:

item	Maximum force/N	Tensile strength/MPa	Elongation at break/%	Fraction of rejection rate/%)
					Example 1	11.040	28.643	797.006	0.1
Example 2	10.279	26.919	741.604	0.2
					Example 3	9.922	24.915	815.469	0.1
Example 4	10.985	29.951	820.088	0.1
					Example 5	11.040	28.643	797.006	0.1
Example 6	10.279	26.919	741.604	0.2
					Example 7	9.922	24.915	815.469	0.1
Example 8	10.985	29.951	820.088	0.1

TABLE 1

As can be seen from Table 1, the maximum force of the gloves prepared by the invention can reach more than 10N on average, the tensile strength can reach more than 25MPa on average, the elongation at break can reach more than 750 percent on average, and the rejection rate is lower than 0.2 percent.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.