CN114806450B - Soaking heat dissipation fireproof film for mobile phone battery and preparation method thereof - Google Patents

Soaking heat dissipation fireproof film for mobile phone battery and preparation method thereof Download PDF

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Publication number
CN114806450B
CN114806450B CN202210239424.8A CN202210239424A CN114806450B CN 114806450 B CN114806450 B CN 114806450B CN 202210239424 A CN202210239424 A CN 202210239424A CN 114806450 B CN114806450 B CN 114806450B
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parts
soaking
layer
heat
fireproof
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CN114806450A (en
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朱向忠
刘展宏
梁先文
涂悦
封力行
赖志强
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Shenzhen Faxin Zhongxin New Material Co ltd
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Shenzhen Faxin Zhongxin New Material Co ltd
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    • C09J7/00—Adhesives in the form of films or foils
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Abstract

The invention discloses a soaking heat dissipation fireproof film for a mobile phone battery and a preparation method thereof, wherein the film comprises a fireproof layer, a soaking layer and a heat conduction layer; the soaking layer comprises the following raw materials in parts by weight: the adhesive comprises the following raw materials in parts by weight: 40-50 parts of nano silver wire slurry, 10-20 parts of water, 1-2 parts of graphene and 1-2 parts of aqueous polyurethane resin; the fireproof layer comprises the following raw materials in parts by weight: 30-50 parts of main resin A, 100-150 parts of solvent, 5-10 parts of heat conducting filler, 5-10 parts of curing agent A and 20-30 parts of flame retardant; the heat conducting layer comprises the following raw materials in parts by weight: 20-30 parts of main resin B, 15-20 parts of heat conducting filler, 100-150 parts of solvent and 2-5 parts of curing agent B; the film prepared by the invention has high heat conductivity coefficient and better fireproof effect.

Description

Soaking heat dissipation fireproof film for mobile phone battery and preparation method thereof
Technical Field
The invention relates to the technical field of films, in particular to a mobile phone battery soaking heat dissipation fireproof film and a preparation method thereof.
Background
With the increasing functions of various consumer electronic products on the market, the volume is thinner, smaller and lighter. Functional materials such as fire prevention, heat conduction, heat insulation, soaking, heat dissipation and the like are increasingly used at heating parts of mobile phone batteries.
The functional material generally adopts a heat conduction material with super-strong heat conductivity as a base material, is used for rapidly absorbing and conducting heat when being attached to a heat source, so that a heating element is kept within a safe operating temperature, the defect of poor heat soaking property caused by good heat conductivity of a traditional product is overcome by coating a material with excellent soaking property, and meanwhile, the heat source is coated by a heat insulation material, so that heat conduction is carried out along a specific direction, and directional heat dissipation is realized. Under the conventional condition, the heat conduction, heat dissipation and soaking materials have higher requirements on heat conduction and heat dissipation performance, so that the soaking performance of the materials is easily reduced due to the fact that the heat conduction component is superior in longitudinal heat conduction and the transverse soaking performance is poor while the superior heat dissipation is ensured, most of functional materials do not have a fireproof function, and inflammability is easily caused when a battery is overloaded.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the mobile phone battery soaking heat dissipation fireproof film and the preparation method thereof, and the prepared film has high heat conductivity and good fireproof effect.
The technical scheme adopted for solving the technical problems is as follows:
a heat-soaking, heat-dissipating and fireproof film for a mobile phone battery comprises a fireproof layer, a heat-soaking layer and a heat-conducting layer;
the soaking layer comprises the following raw materials in parts by weight:
the adhesive comprises the following raw materials in parts by weight: 40-50 parts of nano silver wire slurry, 10-20 parts of water, 1-2 parts of graphene and 1-2 parts of aqueous polyurethane resin;
the fireproof layer comprises the following raw materials in parts by weight:
30-50 parts of main resin A, 100-150 parts of solvent, 5-10 parts of heat conducting filler, 5-10 parts of curing agent A and 20-30 parts of flame retardant;
the heat conducting layer comprises the following raw materials in parts by weight:
20-30 parts of main resin B, 15-20 parts of heat conducting filler, 100-150 parts of solvent and 2-5 parts of curing agent B;
further, the main body resin A is any one or more of polyester resin, polyurethane resin and polyamide resin;
further, the curing agent A is any one or more of polyether amine ester curing agent, methyl polyurethane curing agent and aliphatic polyisocyanate curing agent;
further, the curing agent B is an isocyanate curing agent;
further, the flame retardant is any one of 593 solid resistance or 593 liquid resistance;
further, the main resin B is any one or more of acrylic resin pressure-sensitive adhesive, epoxy resin pressure-sensitive adhesive and silica gel pressure-sensitive adhesive. The heat conducting layer is prepared by the main body resin B with viscosity, has certain adhesive property and can be in viscous contact with a heat source to conduct heat.
Further, the heat conducting material is any one or more of boron nitride, aluminum oxide, silicon carbide, aluminum nitride, magnesium oxide, zinc oxide, carbon nano-tube, graphene and nano-diamond;
further, the solvent is any one or more of ethyl acetate, butanone, toluene, cyclohexanone and butyl ester;
further, the substrate is a transparent PET film (polyethylene terephthalate film).
Specifically, the invention also provides a preparation method of the mobile phone battery soaking heat dissipation fireproof film, which comprises the following steps:
s1, preparation of a fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, carrying out ultrasonic stirring, and then adding the solvent to adjust the viscosity; adding a curing agent, and stirring to obtain a fireproof liquid; uniformly coating on a base material in a transfer printing mode, and drying to obtain a fireproof coating material for later use;
s2, preparing a soaking layer
Dissolving aqueous polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and adjusting viscosity with water; adding nano silver wire slurry and stirring uniformly at a low speed; after filtering, the material is uniformly scraped and coated on a fireproof layer of the fireproof coating material, so that the fireproof heat-conducting material with soaking heat dissipation is obtained.
S3, preparation of a heat conduction layer
Mixing and dissolving the main resin B and the solvent, adding the heat conducting filler in the stirring process, adding the curing agent B, uniformly stirring, and filtering;
s4, preparation of soaking heat dissipation fireproof film
And transferring the obtained release film to a soaking heat dissipation fireproof material to obtain the soaking heat dissipation fireproof film.
The beneficial effects of the invention are as follows:
the film prepared by the invention has higher heat conductivity, and the heat conductivity reaches 0.35-0.56w/mk; the heating temperature of the resistor can be effectively reduced, when the heat conducting layer is applied to a mobile phone battery, the temperature of the mobile phone battery can be reduced by 0.9-2.3 ℃, meanwhile, the fire-proof grade reaches the B1 grade, the heat conducting layer belongs to a flame-proof material, has a better flame-proof effect, is difficult to fire in the air or under the action of high temperature, is not easy to spread quickly, and is immediately stopped after a fire source is removed. When the film is provided with two heat conducting layers, the heat conductivity and the heat conducting effect are improved, and the fire resistance of the film is not affected.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic structural view of the film according to the present invention in examples 1 to 4;
FIG. 2 is a schematic structural view of the film according to the present invention in examples 5 to 7;
wherein: 1. a substrate; 2. a fire-blocking layer; 3. a heat conducting layer; 4, a step of; and a soaking layer.
Detailed Description
The invention will be further illustrated by the following examples, which are not intended to limit the scope of the invention, in order to facilitate the understanding of those skilled in the art.
A soaking heat dissipation fireproof film for a mobile phone battery comprises a fireproof layer 2, a soaking layer 4 and a heat conduction layer 3; specifically, the heat-conducting layer comprises a fireproof layer 2 adhered on a base material 1 (transparent PET film), a soaking layer 4 adhered on the fireproof layer 2, and a heat-conducting layer 3 adhered on the soaking layer 4, wherein the heat-conducting layer 3 is adhered on a release paper film.
The weight parts of the materials for the fireproof layer, the soaking layer and the heat conducting layer in examples 1-4 are as follows:
example 1
A preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps:
s1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 300W and the stirring speed of 200r/min for 30min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 200r/min for 20min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 60 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 200r/min, and the stirring time is 30min; adding the curing agent B, uniformly stirring, and filtering by using a 300-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at the speed of 200r/min for 30min at the ultrasonic power of 300W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 20r/min; filtering with 300 mesh sieve, and spreading the filtrate on the fireproof layer to obtain soaking layer material;
s5, preparation of soaking heat dissipation fireproof film
And (3) spreading the heat-conducting glue solution obtained in the step (S3) on a substrate, drying at 60 ℃, and then transferring and pasting the heat-conducting layer on a soaking layer of a soaking layer material to obtain the soaking heat-dissipating fireproof film.
Example 2
A preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps:
s1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 500W and the stirring speed of 400r/min for 50min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 400r/min for 30min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 80 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 400r/min, and the stirring time is 50min; adding the curing agent B, uniformly stirring, and filtering by using a 500-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at a speed of 400r/min for 50min at an ultrasonic power of 500W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 40r/min; filtering with 500 mesh sieve, and spreading the filtrate on the fireproof layer to obtain soaking layer material;
s5, preparation of soaking heat dissipation fireproof film
And (3) spreading the heat-conducting glue solution obtained in the step (S3) on a substrate, drying at 80 ℃, and then transferring and pasting the heat-conducting layer on a soaking layer of a soaking layer material to obtain the soaking heat-dissipating fireproof film.
Example 3
A preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps:
s1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 400W and the stirring speed of 300r/min for 40min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 300r/min for 25min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 70 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 300r/min, and the stirring time is 40min; adding the curing agent B, uniformly stirring, and filtering by using a 400-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at the speed of 300r/min for 40min at the ultrasonic power of 400W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 30r/min; filtering with 400 mesh sieve, and spreading the filtrate on the fireproof layer to obtain soaking layer material;
s5, preparation of soaking heat dissipation fireproof film
And (3) spreading the heat-conducting glue solution obtained in the step (S3) on a substrate, drying at 70 ℃, and then transferring and pasting the heat-conducting layer on a soaking layer of a soaking layer material to obtain the soaking heat-dissipating fireproof film.
Example 4
A preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps:
s1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 300W and the stirring speed of 400r/min for 50min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 400r/min for 20min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 65 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 400r/min, and the stirring time is 30min; adding the curing agent B, uniformly stirring, and filtering by using a 350-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at the speed of 400r/min for 30min at the ultrasonic power of 300W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 40r/min; filtering with 300 mesh sieve, and spreading the filtrate on the fireproof layer to obtain soaking layer material;
s5, preparation of soaking heat dissipation fireproof film
And (3) spreading the heat-conducting glue solution obtained in the step (S3) on a substrate, drying at 75 ℃, and then transferring and pasting a heat-conducting layer on a heat-soaking layer of the heat-soaking layer material to obtain the heat-soaking heat-dissipation fireproof film.
Example 5
A soaking heat dissipation fireproof film for a mobile phone battery comprises a fireproof layer 2, a soaking layer 4 and a heat conduction layer 3; specifically, the heat-insulating film comprises a fireproof layer 2 adhered to a base material 1, a soaking layer 4 adhered to the fireproof layer 2, and a first heat-conducting layer 3 adhered to the soaking layer 4, wherein the first heat-conducting layer 3 is adhered to a release paper film; and a second heat conducting layer 3 is arranged between the fireproof layer 2 and the soaking layer 4, namely the heat conducting layer 3 is doubled.
In the embodiment, the mobile phone battery soaking heat dissipation fireproof film comprises 2 heat conduction layers; wherein the weight parts of the raw materials of the single fireproof layer, the single soaking layer and the single heat conducting layer are the same as those of the embodiment 1;
a preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps of
S1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 300W and the stirring speed of 200r/min for 30min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 200r/min for 20min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 60 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 200r/min, and the stirring time is 30min; adding the curing agent B, uniformly stirring, and filtering by using a 300-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparation of first heat conduction layer
The heat-conducting glue solution is coated on the fireproof coating in the step S2 on a base material in a scraping mode, and after the heat-conducting glue solution is dried at 80 ℃, a first heat-conducting layer is obtained;
s5, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at the speed of 200r/min for 30min at the ultrasonic power of 300W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 20r/min; filtering with 300 mesh sieve, and spreading the filtrate on the first heat conducting layer to obtain soaking layer material;
s6, preparation of soaking heat dissipation fireproof film
Preparing a second part of heat-conducting glue solution according to the raw material composition of the heat-conducting glue solution in the step S3; and (3) spreading a second part of hot glue solution on the base material, drying at 60 ℃, and then transferring and attaching the first heat conduction layer to the soaking layer of the soaking layer material in the step S5 to obtain the soaking heat dissipation fireproof film.
Example 6
A heat-soaking, heat-dissipating and fireproof film for a mobile phone battery comprises a fireproof layer, a heat-soaking layer and a heat-conducting layer; the heat-conducting layer is adhered to the release paper film; and a second heat conduction layer is arranged between the fireproof layer and the soaking layer, namely the heat conduction layer is doubled.
In the embodiment, the mobile phone battery soaking heat dissipation fireproof film comprises 2 heat conduction layers; wherein the weight parts of the raw materials of the single fireproof layer, the single soaking layer and the single heat conducting layer are the same as those of the embodiment 2;
a preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps of
S1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 500W and the stirring speed of 400r/min for 50min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 400r/min for 30min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 80 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 400r/min, and the stirring time is 50min; adding the curing agent B, uniformly stirring, and filtering by using a 500-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparation of first heat conduction layer
The heat-conducting glue solution prepared in the step S3 is coated on the fireproof coating in the step S2 on a substrate in a scraping mode, and the first heat-conducting layer is obtained after drying at 80 ℃;
s5, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at a speed of 400r/min for 50min at an ultrasonic power of 500W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 40r/min; filtering with 500 mesh sieve, and spreading the filtrate on the first heat conducting layer to obtain soaking layer material;
s6, preparation of soaking heat dissipation fireproof film
Preparing a second part of heat-conducting glue solution according to the raw material composition of the heat-conducting glue solution in the step S3; and (3) spreading a second part of hot glue solution on the base material, drying at 80 ℃, and then transferring and attaching a second heat conduction layer to a soaking layer of the soaking layer material to obtain the soaking heat dissipation fireproof film.
Example 7
A heat-soaking, heat-dissipating and fireproof film for a mobile phone battery comprises a fireproof layer, a heat-soaking layer and a heat-conducting layer; the heat-conducting layer is adhered to the release paper film; and a second heat conduction layer is arranged between the fireproof layer and the soaking layer, namely the heat conduction layer is doubled.
In the embodiment, the mobile phone battery soaking heat dissipation fireproof film comprises 2 heat conduction layers; wherein the weight parts of the raw materials of the single fireproof layer, the single soaking layer and the single heat conducting layer are the same as those of the embodiment 3;
a preparation method of a mobile phone battery soaking heat dissipation fireproof film comprises the following steps:
s1, preparing materials according to the specific parts of the raw materials;
s2, preparation of fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, and carrying out ultrasonic stirring at the ultrasonic power of 400W and the stirring speed of 300r/min for 40min; adding solvent to regulate viscosity (fluid state: fluidity, consistency index is less than or equal to 0); adding a curing agent, and stirring at the stirring speed of 300r/min for 25min to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying at 70 ℃ to obtain a fireproof coating for later use;
s3, preparation of heat conduction glue solution
Mixing and dissolving the main resin B and the solvent, and adding the heat-conducting filler in the stirring process, wherein the stirring speed is 300r/min, and the stirring time is 40min; adding the curing agent B, uniformly stirring, and filtering by using a 400-mesh screen to obtain a heat-conducting glue solution for later use;
s4, preparation of first heat conduction layer
The heat-conducting glue solution prepared in the step S3 is coated on the fireproof coating in the step S2 on a substrate in a scraping mode, and the first heat-conducting layer is obtained after drying at 80 ℃;
s5, preparing a soaking layer
Dissolving waterborne polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and stirring at the speed of 300r/min for 40min at the ultrasonic power of 400W; the viscosity (fluid: fluid, its consistency index is less than or equal to 0) is then adjusted by water; adding nano silver wire slurry to stir at the stirring speed of 30r/min; filtering with 400 mesh sieve, and spreading the filtrate on the first heat conducting layer to obtain soaking layer material;
s6, preparation of soaking heat dissipation fireproof film
Preparing a second part of heat-conducting glue solution according to the raw material composition of the heat-conducting glue solution in the step S3; and (3) scraping a second part of hot glue solution on the substrate, drying at 70 ℃, and then transferring and pasting a second heat conduction layer on a soaking layer of the soaking layer material to obtain the soaking heat dissipation fireproof film.
The films prepared in examples 1 to 7 were subjected to performance testing, and the results are summarized in Table 1 below
TABLE 1
From the above Table 1, it can be seen that the film prepared by the invention has higher thermal conductivity, and the thermal conductivity reaches 0.35-0.56w/mk; the heating temperature of the resistor can be effectively reduced, when the flame retardant type material is applied to a mobile phone battery, the temperature of the mobile phone battery can be reduced by 0.9-2.3 ℃, meanwhile, the fire retardant level reaches the B1 level, the flame retardant type material has a better flame retardant effect, the flame retardant type material is difficult to fire in the air or under the high temperature effect, and is difficult to spread quickly, and the combustion immediately stops after a fire source is removed.
The above embodiments are preferred embodiments of the present invention, and besides, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.

Claims (4)

1. The soaking, radiating and fireproof film for the mobile phone battery is characterized by comprising a fireproof layer, a soaking layer and a heat conducting layer; the film comprises a fireproof layer adhered to the base material, a soaking layer adhered to the fireproof layer and a heat conducting layer adhered to the soaking layer;
the soaking layer comprises the following raw materials in parts by weight:
40-50 parts of nano silver wire slurry, 10-20 parts of water, 1-2 parts of graphene and 1-2 parts of aqueous polyurethane resin;
the fireproof layer comprises the following raw materials in parts by weight:
30-50 parts of main resin A, 100-150 parts of solvent, 5-10 parts of heat conducting filler, 5-10 parts of curing agent A and 20-30 parts of flame retardant;
the heat conducting layer comprises the following raw materials in parts by weight:
20-30 parts of main resin B, 15-20 parts of heat conducting filler, 100-150 parts of solvent and 2-5 parts of curing agent B;
the main body resin A is any one or more of polyester resin, polyurethane resin and polyamide resin;
the main resin B is any one or more of acrylic resin pressure-sensitive adhesive, epoxy resin pressure-sensitive adhesive and silica gel pressure-sensitive adhesive;
the curing agent A is any one or more of polyether amine ester curing agent, methyl polyurethane curing agent and aliphatic polyisocyanate curing agent;
the curing agent B is isocyanate curing agent.
2. The mobile phone battery soaking, heat dissipation and fire prevention film according to claim 1, wherein the heat conduction filler is any one or any several of boron nitride, aluminum oxide, silicon carbide, aluminum nitride, magnesium oxide, zinc oxide, carbon nanotubes, graphene and nano diamond.
3. The soaking, heat-dissipating and fireproof film for the mobile phone battery according to claim 1, wherein the solvent is any one or more of ethyl acetate, butanone, toluene, cyclohexanone and butyl ester.
4. A method for preparing a heat-soaking, heat-dissipating and fireproof film for a mobile phone battery according to claim 1, comprising the following steps:
s1, preparation of a fireproof layer
Mixing and dissolving the main resin A and the solvent, adding the flame retardant and the heat conducting filler, carrying out ultrasonic stirring, and then adding the solvent to adjust the viscosity; adding a curing agent, and stirring to obtain a fireproof liquid; uniformly coating on a substrate in a transfer printing mode, and drying to obtain a fireproof coating for later use;
s2, preparation of heat-conducting glue solution
Mixing and dissolving the main resin B and the solvent, adding the heat conducting filler in the stirring process, adding the curing agent B, uniformly stirring, and filtering to obtain a heat conducting glue solution for later use;
s3, preparing a soaking layer
Dissolving aqueous polyurethane resin in water, adding graphene, performing ultrasonic dispersion, and adjusting viscosity with water; adding nano silver wire slurry and stirring uniformly at a low speed; after filtration, the material is uniformly scraped and coated on a fireproof layer to obtain a material with a soaking layer;
s4, preparation of soaking heat dissipation fireproof film
And (3) scraping the obtained heat conducting glue solution on a base material, and transferring the heat conducting glue solution onto a soaking layer of a soaking layer material to obtain the soaking heat dissipation fireproof film.
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