阅读说明：本技术 一种气凝胶改性胶乳、隔热手套及制备方法 (Aerogel modified latex, heat-insulating gloves and preparation method ) 是由 邱国栋 张明 陈晓红 刘网军 于 2021-01-22 设计创作，主要内容包括：本申请公开了一种气凝胶改性胶乳、隔热手套及制备方法,气凝胶改性胶乳包括：胶乳100份,KOH 2-4份,硫磺0.8-1.6份,氧化锌1.6-2.4份,促进剂0.5-1.2份、分散剂0.01-0.05份,防老剂0.4-1份,钛白粉1.4-2.2份,黑颜料2-6份,纤维素4-8份,气凝胶涂膏10-50份。基于上述的气凝胶改性胶乳制备隔热手套。隔热手套的制备方法,包括：制备气凝胶改性胶乳；选取手套芯套于手模上,并将手套芯预热处理；将手套芯浸渍凝固剂；将手套芯浸渍上述气凝胶改性胶乳；待手套芯胶面成型后预硫处理；泡洗后进行硫化处理；脱膜得到所述隔热手套。本申请采用在胶乳中加入气凝胶涂膏共混改性得到一种新型的气凝胶改性胶乳,方法简单易行；本申请制备的隔热手套具有更好的耐磨、耐切割、耐油等性能。(The application discloses aerogel modified latex, heat insulating gloves and preparation method, aerogel modified latex includes: 100 parts of latex, 2-4 parts of KOH, 0.8-1.6 parts of sulfur, 1.6-2.4 parts of zinc oxide, 0.5-1.2 parts of accelerator, 0.01-0.05 part of dispersant, 0.4-1 part of anti-aging agent, 1.4-2.2 parts of titanium dioxide, 2-6 parts of black pigment, 4-8 parts of cellulose and 10-50 parts of aerogel coating paste. Heat insulating gloves were prepared based on the aerogel modified latex described above. A method of making a heat insulating glove, comprising: preparing aerogel modified latex; selecting a glove core to be sleeved on the hand mold, and preheating the glove core; dipping the glove core with a coagulant; dipping the glove core into the aerogel modified latex; pre-vulcanizing after the rubber surface of the glove core is formed; carrying out vulcanization treatment after soaking; demoulding to obtain the heat-insulating glove. The novel aerogel modified latex is obtained by adding aerogel coating paste into the latex, blending and modifying, and the method is simple and easy to implement; the heat-insulating gloves prepared by the application have better performances of wear resistance, cutting resistance, oil resistance and the like.)

1. The aerogel modified latex is characterized by comprising the following raw materials in parts by mass: 100 parts of latex, 2-4 parts of KOH, 0.8-1.6 parts of sulfur, 1.6-2.4 parts of zinc oxide, 0.5-1.2 parts of accelerator, 0.01-0.05 part of dispersant, 0.4-1 part of anti-aging agent, 1.4-2.2 parts of titanium dioxide, 2-6 parts of black pigment, 4-8 parts of cellulose and 10-50 parts of aerogel coating paste.

2. The aerogel modified latex of claim 1, wherein the accelerator is zinc diethyldithiocarbamate, the dispersant is sodium methylenedinaphthalene sulfonate, and the anti-aging agent is a butylated reaction product of p-cresol and dicyclopentadiene.

3. The aerogel modified latex of claim 1 or 2, wherein the aerogel paste consists of a silica-based aerogel having a solids content of 15% to 25% and water.

4. The aerogel modified latex of claim 1 or 2, wherein the latex is one or more of butyronitrile latex, natural latex, styrene-butadiene latex, neoprene latex, or butyl latex.

5. The aerogel modified latex according to claim 1 or 2, wherein the aerogel coating has the following performance specifications: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

6. Thermal gloves are prepared based on the aerogel modified latex of any of claims 1 to 5.

7. A method of making the insulated glove of claim 6, wherein the method of making comprises:

preparing aerogel modified latex;

selecting a glove core to be sleeved on the hand mold, and preheating the glove core;

dipping the glove core with a coagulant;

dipping the glove core into the aerogel modified latex;

pre-vulcanizing after the rubber surface of the glove core is formed;

carrying out vulcanization treatment after soaking;

demoulding to obtain the heat-insulating glove.

8. The method of claim 7, wherein the preparation of the aerogel modified latex comprises: and adding the aerogel coating pastes weighed in proportion into the latex under the alkaline condition in multiple batches, stirring for 4-6h indoors, and then respectively adding other raw materials for fully mixing to obtain the aerogel modified latex.

9. The preparation method according to claim 7, wherein the aerogel modified latex is allowed to stand for 6 to 12 hours and the viscosity is controlled to 4000 ± 1000 mps.

10. The method of claim 7, wherein said selecting a glove core to be applied to a hand mold and preheating the glove core comprises: preheating the glove core in an oven at 50-60 deg.C for 15-20 min.

11. The preparation method of claim 7, wherein the glove core is made of one or more of polyethylene, aramid fiber, polyester, nylon, Kevlar, cotton, glass fiber, steel wire and carbon fiber.

12. The method of any one of claims 7 to 11, wherein the step of impregnating the glove core with the coagulant comprises: homogenizing at room temperature for 60-100 s.

13. The method of any one of claims 7 to 11, wherein said dipping the glove core into the aerogel modified latex comprises: homogenizing at room temperature for 30-60 s; wherein, the dipping aerogel modified latex can be dipped for one time or multiple times, and the next dipping is started after the glue is evenly glued for 5-10min at 50-60 ℃ after the dipping is carried out for multiple times.

14. The method for preparing the glove core according to any one of claims 7 to 11, wherein the pre-vulcanizing treatment after the rubber surface of the glove core is molded comprises the following steps: the method for molding the rubber surface comprises non-impregnation curing, impregnation curing agent, impregnation pattern forming agent, salt spraying or water washing.

15. The method for preparing the glove core according to any one of claims 7 to 11, wherein the pre-vulcanizing treatment after the rubber surface of the glove core is molded comprises the following steps: pre-vulcanizing for 30-40min after the rubber surface of the glove core is formed, wherein the pre-vulcanizing temperature is 55-95 ℃.

16. The method according to any one of claims 7 to 11, wherein the step of subjecting the foam-washed product to a vulcanization treatment comprises: soaking and washing for 30-40min at 25-35 deg.C.

17. The method according to any one of claims 7 to 11, wherein the step of subjecting the foam-washed product to a vulcanization treatment comprises: vulcanizing for 55-60min at 95-115 deg.C.

Technical Field

The application belongs to the technical field of impregnation and dipping, and particularly relates to aerogel modified latex, heat-insulating gloves and a preparation method.

Background

Aerogel is a nano-scale porous solid material, and is a wide variety of materials, such as silicon-based, carbon-based, sulfur-based, and metal oxide-based materials. The gel is prepared by replacing liquid with gas through supercritical drying or normal pressure drying and other methods, has a cylindrical multi-branched three-dimensional network structure with high permeability, and has extremely high porosity, extremely low density, high specific surface area and ultrahigh pore volume rate. The nano network structure effectively limits the propagation of local thermal excitation, the solid thermal conductivity is 2 to 3 orders of magnitude lower than that of a corresponding glassy material, and the solid thermal conductivity is as low as 0.013W/m.K at normal temperature and normal pressure. In addition, aerogels appear to be "weak and not wind-resistant" and are in fact very robust, capable of withstanding pressures equivalent to thousands of times their own mass. Based on the excellent performances of the aerogel, the aerogel can be added into a high polymer latex matrix (such as butyronitrile latex, natural latex, styrene-butadiene latex, neoprene latex and butyl latex) to form a protective coating, and the performances of heat insulation, durability, light weight and the like of the material can be well improved.

Latex protective gloves are gloves made by using fabric as lining and through the processes of dipping latex, vulcanization and the like. Because of the characteristics of easy processing, strong applicability, reusability and the like, the composite material is widely applied to various operation places such as automobile manufacturing industry, electronic and electric appliance manufacturing industry, aerospace industry, medical treatment, sanitation and the like. With the development of science and technology and the progress of industry, the requirement of people on protection is higher and higher. The aerogel-latex hand-protection sleeve has the heat insulation function, and can provide multiple functions of wear resistance, cutting resistance, oil resistance and the like for the glove through matching of different fabrics and latexes with different characteristics. Compared with the heat insulation gloves with single function, low durability and discomfort in the market, the glove has a great competitive advantage.

Disclosure of Invention

Aiming at the defects or shortcomings of the prior art, the technical problem to be solved by the application is to provide the aerogel modified latex, the heat-insulating gloves and the preparation method, the novel aerogel modified latex is obtained by adding the aerogel coating paste into the latex and blending and modifying, the method is simple and easy to implement, and harsh conditions are not needed; the heat-insulating gloves have good high-temperature resistance effect due to the excellent heat-insulating property of the aerogel modified latex; the glove is endowed with a multi-layer aerogel heat insulation structure by a multiple gum dipping process, so that the high temperature resistance of the glove is maximized; the aerogel modified latex has the special properties of low density, compressive strength resistance and the like, so that the heat-insulating glove has good heat insulation property, and is lighter and more durable; compare traditional high temperature resistant gloves, this application can make multi-functional heat-insulating gloves through matching different gloves cores, latex, dipping forming process and have better performances such as wear-resisting, resistant cutting, resistant oil.

In order to solve the technical problem, the application is realized by the following technical scheme:

the application provides an aerogel modified latex on the one hand, which comprises the following raw materials in parts by mass: 100 parts of latex, 2-4 parts of KOH, 0.8-1.6 parts of sulfur, 1.6-2.4 parts of zinc oxide, 0.5-1.2 parts of accelerator, 0.01-0.05 part of dispersant, 0.4-1 part of anti-aging agent, 1.4-2.2 parts of titanium dioxide, 2-6 parts of black pigment, 4-8 parts of cellulose and 10-50 parts of aerogel coating paste.

Wherein the KOH may be 2 parts, 3 parts, or 4 parts; the sulfur may be 0.8 parts, 0.9 parts, 1.0 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, or 1.6 parts; the zinc oxide can be 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts, 2.1 parts, 2.2 parts, 2.3 parts, or 2.4 parts; the accelerator may be 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, 1.1 parts or 1.2 parts, the dispersant may be 0.01 parts, 0.02 parts, 0.03 parts, 0.04 parts or 0.05 parts, and the anti-aging agent may be 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts or 1 part; the titanium dioxide can be 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts, 2.1 parts or 2.2 parts; the black pigment may be 2 parts, 3 parts, 4 parts, 5 parts or 6 parts; the cellulose may be 4 parts, 5 parts, 6 parts, 7 parts, or 8 parts; 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts or 50 parts of aerogel coating paste.

Further, in the aerogel modified latex, zinc diethyldithiocarbamate is used as the accelerator, sodium methylenedinaphthalene sulfonate is used as the dispersant, and a butylation reaction product of p-cresol and dicyclopentadiene is used as the anti-aging agent.

Further, the aerogel modified latex is prepared by mixing the silica-based aerogel with 15-25% of solid content and water.

Further, the aerogel modified latex is prepared by mixing a latex and a solvent, wherein the latex is one or a combination of more of butyronitrile latex, natural latex, butylbenzene latex, chloroprene latex and butyl latex. If the butyronitrile latex is used as part of the latex, the prepared heat-insulating gloves have excellent oil resistance.

Further, the aerogel modified latex has the following performance indexes: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

The application also provides a heat-insulating glove based on the aerogel modified latex.

The application also provides a preparation method of the heat-insulating glove, which comprises the following steps:

preparing aerogel modified latex;

selecting a glove core to be sleeved on the hand mold, and preheating the glove core;

dipping the glove core with a coagulant;

dipping the glove core into the aerogel modified latex;

pre-vulcanizing after the rubber surface of the glove core is formed;

carrying out vulcanization treatment after soaking;

demoulding to obtain the heat-insulating glove.

Further, the above preparation method, wherein the preparation of the aerogel modified latex comprises: adding the aerogel coating pastes weighed in proportion into the latex under the alkaline condition in multiple batches, stirring for 4-6h indoors, and then respectively adding other raw materials for fully mixing to obtain the aerogel modified latex; the alkaline condition is pH 8-9. Preferably, the aerogel coating can be added in 6-8 batches.

Further, the preparation method is characterized in that the aerogel modified latex is allowed to stand for 6-12h, and the viscosity is controlled to be 4000 +/-1000 mps, preferably 3000mps, 4000mps or 5000 mps.

Further, the above-mentioned preparation method, wherein, in the selecting the glove core to be sleeved on the hand mold and preheating the glove core, comprises: preheating the glove core in an oven at 50-60 deg.C for 15-20 min. Preferably, the oven temperature may be 50 ℃, 51 ℃, 52 ℃, 53 ℃, 54 ℃, 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃ or 60 ℃; the preheating time can be 15min, 16min, 17min, 18min, 19min or 20 min.

Further, in the preparation method, the glove core is made of one or more of polyethylene, aramid fiber, polyester, nylon, kevlar, cotton, glass fiber, steel wire and carbon fiber.

Further, the above method for preparing, wherein the dipping of the glove core into the coagulant comprises: homogenizing at room temperature for 60-100s, preferably 60s, 70s, 80s, 90s or 100 s.

Further, the above method for preparing, wherein the dipping of the glove core into the aerogel modified latex comprises: homogenizing at room temperature for 30-60s, preferably for 30s, 40s, 50s or 60 s; wherein, the dipping aerogel modified latex can be dipped for one time or multiple times, and the next dipping is started after the glue is evenly glued for 5-10min at 50-60 ℃ after the dipping is carried out for multiple times. Preferably, the oven temperature may be 50 ℃, 51 ℃, 52 ℃, 53 ℃, 54 ℃, 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃ or 60 ℃; the drying time can be 5min, 6min, 7min, 8min, 9min, and 10 min. Through the above single or multiple dipping, a multilayer heat insulation structure of the aerogel modified latex can be realized.

Further, the above preparation method, wherein, in the pre-vulcanization treatment after the formation of the rubber surface of the glove core, comprises: the method for molding the rubber surface comprises non-impregnation curing, impregnation curing agent, impregnation pattern forming agent, salt spraying or water washing. The glove can be endowed with multiple functions of wear resistance, cutting resistance, oil resistance and the like by matching different glove cores and latex.

Further, the above preparation method, wherein, in the pre-vulcanization treatment after the formation of the rubber surface of the glove core, comprises: pre-vulcanizing for 30-40min after the rubber surface of the glove core is formed, wherein the pre-vulcanizing temperature is 55-95 ℃. Preferably, the pre-vulcanization time can be 30min, 31min, 32min, 33min, 34min, 35min, 36min, 37min, 38min, 39min or 40min, and the pre-vulcanization temperature can be 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃ or 95 ℃. Further, the above-mentioned production method, wherein the step of subjecting to the vulcanization treatment after the soaking, comprises: soaking and washing for 30-40min at 25-35 deg.C. Preferably, the soaking and washing time can be 30min, 31min, 32min, 33min, 34min, 35min, 36min, 37min, 38min, 39min or 40min, and the soaking and washing temperature can be 25 ℃, 26 ℃, 27 ℃, 28 ℃, 29 ℃, 30 ℃, 31 ℃, 32 ℃ or 33 ℃, 34 ℃ or 35 ℃.

Further, the above-mentioned production method, wherein the step of subjecting to the vulcanization treatment after the soaking, comprises: vulcanizing for 55-65min at 95-115 deg.C. Preferably, the vulcanization time may be 55min, 56min, 57min, 58min, 59min, 60min, 61min, 62min, 63min, 64min or 65min, and the temperature may be 95 ℃, 100 ℃, 105 ℃, 110 ℃ or 115 ℃.

Compared with the prior art, the method has the following technical effects:

the novel aerogel modified latex is obtained by adding aerogel coating paste into the latex, blending and modifying, the method is simple and feasible, and severe conditions are not required; the heat-insulating gloves have good high-temperature resistance effect due to the excellent heat-insulating property of the aerogel modified latex; the glove is endowed with a multi-layer aerogel heat insulation structure by a multiple gum dipping process, so that the high temperature resistance of the glove is maximized; the aerogel modified latex has the special properties of low density, compressive strength resistance and the like, so that the heat-insulating glove has good heat insulation property, and is lighter and more durable; compare traditional high temperature resistant gloves, this application can make multi-functional heat-insulating gloves through matching different gloves cores, latex, dipping forming process and have better performances such as wear-resisting, resistant cutting, resistant oil.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example 1

The aerogel modified latex comprises the following raw materials in parts by weight: 100 parts of latex, 3 parts of KOH, 1.2 parts of sulfur, 2.0 parts of zinc oxide, 0.8 part of accelerator, 1.8 parts of titanium dioxide, 0.03 part of dispersant, 30 parts of aerogel coating paste, 0.7 part of anti-aging agent, 4 parts of black pigment and 6 parts of cellulose.

The latex is nitrile latex, the accelerator is zinc diethyldithiocarbamate, the dispersant is sodium methylene dinaphthalene sulfonate, and the anti-aging agent is a butylated reaction product of p-cresol and dicyclopentadiene.

The aerogel coating paste consists of silica-based aerogel with the solid content of 15-25% and water.

Preferably, the performance indexes of the aerogel coating paste are as follows: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

Wherein, the aerogel modified latex obtained by the method can be used for preparing heat-insulating gloves.

The preparation method of the heat-insulating glove comprises the following specific steps:

preparing aerogel modified latex according to the mixture ratio of the raw materials, controlling the viscosity at 3000mps, standing for 6 hours, and then putting into service;

step two, sleeving the glove core on the glove mold, and preheating for 15min at 55 ℃;

step three, dipping a coagulant, wherein the coagulation is carried out for 60s at room temperature;

dipping the aerogel modified latex, homogenizing at room temperature for 30s, and drying at 55 ℃ for 5 min; dipping the glue again for 2 times;

step five, forming by salt spraying;

step six, carrying out pre-vulcanization treatment at 55-95 ℃ for 40min, carrying out soaking washing at 25-35 ℃ for 30min, and then carrying out vulcanization treatment at 95-115 ℃ for 60 min;

and step seven, demolding to obtain the heat-insulating glove.

Example 2

The aerogel modified latex comprises the following raw materials in parts by weight: 100 parts of latex, 3 parts of KOH, 1.2 parts of sulfur, 2.0 parts of zinc oxide, 0.8 part of accelerator, 1.8 parts of titanium dioxide, 0.03 part of dispersant, 50 parts of aerogel coating paste, 0.7 part of anti-aging agent, 4 parts of black pigment and 6 parts of cellulose.

The latex is nitrile latex, the accelerator is zinc diethyldithiocarbamate, the dispersant is sodium methylene dinaphthalene sulfonate, and the anti-aging agent is a butylated reaction product of p-cresol and dicyclopentadiene.

The aerogel coating paste consists of silica-based aerogel with the solid content of 15-25% and water.

Preferably, the performance indexes of the aerogel coating paste are as follows: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

Wherein, the aerogel modified latex obtained by the method can be used for preparing heat-insulating gloves.

The preparation method of the heat-insulating glove comprises the following specific steps:

preparing aerogel modified latex according to the mixture ratio of the raw materials, controlling the viscosity at 3000mps, standing for 6 hours, and then putting into service;

step two, sleeving the glove core on the glove mold, and preheating for 15min at 55 ℃;

step three, dipping a coagulant, and uniformly coagulating for 60s at room temperature;

dipping the aerogel modified latex, homogenizing at room temperature for 30s, and drying at 55 ℃ for 5 min; dipping the glue again for 2 times;

step five, forming by salt spraying;

step six, carrying out pre-vulcanization treatment at 55-95 ℃ for 40min, carrying out soaking washing at 25-35 ℃ for 30min, and then carrying out vulcanization treatment at 95-115 ℃ for 60 min;

and step seven, demolding to obtain the heat-insulating glove.

Example 3

The aerogel modified latex comprises the following raw materials in parts by weight: 100 parts of latex, 3 parts of KOH, 1.2 parts of sulfur, 2.0 parts of zinc oxide, 0.8 part of accelerator, 1.8 parts of titanium dioxide, 0.03 part of dispersant, 30 parts of aerogel coating paste, 0.7 part of anti-aging agent, 4 parts of black pigment and 6 parts of cellulose.

The latex is nitrile latex, the accelerator is zinc diethyldithiocarbamate, the dispersant is sodium methylene dinaphthalene sulfonate, and the anti-aging agent is a butylated reaction product of p-cresol and dicyclopentadiene.

The aerogel coating paste consists of silica-based aerogel with the solid content of 15-25% and water.

Preferably, the performance indexes of the aerogel coating paste are as follows: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

Wherein, the aerogel modified latex obtained by the method can be used for preparing heat-insulating gloves.

The preparation method of the heat-insulating glove comprises the following specific steps:

a preparation method of a multifunctional heat-insulating glove comprises the following steps:

preparing aerogel modified latex according to the mixture ratio of the raw materials, controlling the viscosity at 5000mps, standing for 6 hours, and then putting into service;

step two, sleeving the glove core on the glove mold, and preheating for 15min at 55 ℃;

step three, dipping a coagulant, and uniformly coagulating for 60s at room temperature;

dipping the aerogel modified latex, homogenizing at room temperature for 30s, and drying at 55 ℃ for 5 min; dipping the glue again for 1 time;

step five, dipping a curing agent for molding;

step six, carrying out pre-vulcanization treatment at 55-95 ℃ for 40min, carrying out soaking washing at 25-35 ℃ for 30min, and then carrying out vulcanization treatment at 95-115 ℃ for 60 min;

and step seven, demolding to obtain the heat-insulating glove.

Example 4

The aerogel modified latex comprises the following raw materials in parts by weight: 100 parts of latex, 3 parts of KOH, 1.2 parts of sulfur, 2.0 parts of zinc oxide, 0.8 part of accelerator, 1.8 parts of titanium dioxide, 0.03 part of dispersant, 30 parts of aerogel coating paste, 0.7 part of anti-aging agent, 4 parts of black pigment and 6 parts of cellulose.

The latex is nitrile latex, the accelerator is zinc diethyldithiocarbamate, the dispersant is sodium methylene dinaphthalene sulfonate, and the anti-aging agent is a butylated reaction product of p-cresol and dicyclopentadiene.

The aerogel coating paste consists of silica-based aerogel with the solid content of 15-25% and water.

Preferably, the performance indexes of the aerogel coating paste are as follows: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

Wherein, the aerogel modified latex obtained by the method can be used for preparing heat-insulating gloves.

The preparation method of the heat-insulating glove comprises the following specific steps:

a preparation method of a multifunctional heat-insulating glove comprises the following steps:

preparing aerogel modified latex according to the mixture ratio of the raw materials, controlling the viscosity at 5000mps, standing for 6 hours, and then putting into service;

step two, covering the hand mold with a polyethylene or steel wire sleeve core, and preheating for 15min at 55 ℃ in an oven;

step three, dipping a coagulant, and uniformly coagulating for 60s at room temperature;

dipping the aerogel modified latex, homogenizing at room temperature for 30s, and drying at 55 ℃ for 5 min; dipping the glue again for 1 time;

fifthly, spraying salt for forming;

step six, carrying out pre-vulcanization treatment at 55-95 ℃ for 40min, carrying out soaking washing at 25-35 ℃ for 30min, and then carrying out vulcanization treatment at 95-115 ℃ for 60 min;

and step seven, demolding to obtain the heat-insulating glove.

Example 5

The aerogel modified latex comprises the following raw materials in parts by weight: 100 parts of latex, 3 parts of KOH, 1.2 parts of sulfur, 2.0 parts of zinc oxide, 0.8 part of accelerator, 1.8 parts of titanium dioxide, 0.03 part of dispersant, 30 parts of aerogel coating paste, 0.7 part of anti-aging agent, 4 parts of black pigment and 6 parts of cellulose.

The latex is nitrile latex and natural latex (the ratio is 8:2), the accelerator is zinc diethyldithiocarbamate, the dispersant is sodium methylene dinaphthalene sulfonate, and the anti-aging agent is a butylated reaction product of p-cresol and dicyclopentadiene.

The aerogel coating paste consists of silica-based aerogel with the solid content of 15-25% and water.

The performance indexes of the aerogel coating paste are as follows: the grain diameter is 10-50 μm, the aperture is 20-50nm, the porosity is 90-95%, and the thermal conductivity is 0.015-0.018W/m.K.

Wherein, the aerogel modified latex obtained by the method can be used for preparing heat-insulating gloves.

The preparation method of the heat-insulating glove comprises the following specific steps:

a preparation method of a multifunctional heat-insulating glove comprises the following steps:

preparing aerogel modified latex according to the mixture ratio of the raw materials, controlling the viscosity at 3000mps, standing for 6 hours, and then putting into service;

step two, covering the hand mold with a polyethylene or steel wire sleeve core, and preheating for 15min at 55 ℃ in an oven;

step three, dipping a coagulant, and uniformly coagulating for 60s at room temperature;

dipping the aerogel modified latex, homogenizing at room temperature for 30s, and drying at 55 ℃ for 5 min; dipping the glue again for 2 times;

fifthly, spraying salt for forming;

step six, carrying out pre-vulcanization treatment at 55-95 ℃ for 40min, carrying out soaking washing at 25-35 ℃ for 30min, and then carrying out vulcanization treatment at 95-115 ℃ for 60 min;

and step seven, demolding to obtain the heat-insulating glove.

The application analyzes the performance indexes of the different embodiments through tests, and the specific performance indexes are shown in the following table:

examples	Thermal contact/EN 407	Heat transfer/EN 407	Abrasion resistance/EN 388	Cut resistant/EN 388
					Example 1	Stage 2	Grade 3	4 stage	Class B
Example 2	Grade 3	Grade 3	Grade 3	Class B
					Example 3	Stage 2	Stage 2	4 stage	Class B
Example 4	Stage 2	Stage 2	Grade 3	Class D
					Example 5	Stage 2	Grade 3	4 stage	Class D

From the above test data, the heat-insulating gloves made of the aerogel modified latex have good heat-insulating performance, and as the proportion of the aerogel coating paste increases, the heat-insulating performance is improved, but the wear resistance is relatively weakened. It can be seen from examples 3 to 5 that different grades of abrasion and cut resistance are obtained by matching different glove cores, latexes, dipping processes. In conclusion, the heat insulation glove has the heat insulation function, and meanwhile has the multiple functions of wear resistance, cutting resistance, oil resistance and the like, and has good market application prospect.

The above embodiments are merely to illustrate the technical solutions of the present application and are not limitative, and the present application is described in detail with reference to preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made in the present invention without departing from the spirit and scope of the present invention and shall be covered by the appended claims.