CN111440592A - Heat-conducting structural adhesive for new energy automobile power battery pack - Google Patents
Heat-conducting structural adhesive for new energy automobile power battery pack Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a heat-conducting structural adhesive for a power battery pack of a new energy automobile, and particularly relates to the field of new energy automobiles, wherein the heat-conducting structural adhesive comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of platinum catalyst, 5-10 parts of binder and 52-84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of hydrogen-containing silicone oil, 1-2 parts of a time delay agent, 5-10 parts of a binder and 50-83 parts of a modified heat-conducting filler. According to the invention, A, B two components are mixed, the platinum catalyst catalyzes vinyl silicone oil and hydrogen-containing silicone oil to carry out addition reaction and crosslinking, the heat-conducting structural adhesive is obtained after curing, the thickness is half of the thickness of the heat-conducting gasket, the weight is half of the weight of the heat-conducting gasket, the tensile property is improved, full-automatic dispensing can be realized in the construction process, manual assembly is not needed, and the assembly efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a heat-conducting structural adhesive for a power battery pack of a new energy automobile.
Background
The new energy automobile is one of the important industries of the nation for promoting clean business and smart cities, and the market volume of the new energy automobile industry is huge. The core component of the new energy automobile is a power battery, and a battery pack obtained by connecting thousands of power batteries in series and in parallel has high power density and huge heat productivity when in operation. Therefore, the heat dissipation of the power battery pack is the key for maintaining the service life of the power battery, and in general, the heat dissipation scheme of the power battery pack adopts active heat dissipation, namely, a water cooling plate is attached to the bottom of the battery pack, interface materials such as heat conduction silica gel sheets used between the water cooling plate and the battery are separated, and circulating cooling water is introduced into the water cooling plate to dissipate heat of the battery pack. The thermal interface material serves here as a buffer, heat conductor and electrical insulation.
Along with the descending of new energy automobile price, the battery pack structure is optimized, the requirement on the good performance of a thermal interface material is higher and higher, and the traditional heat-conducting pouring sealant is eliminated by the market due to the fact that the filling amount is large, the weight is too large, and the energy density of the battery pack is reduced. The thickness of the heat conduction gasket which is widely used at present is more than 1.5mm, the heat conduction gasket has stronger tensile resistance (more than 8N), the heat conduction gasket used by each new energy automobile is 2-4 square meters, the weight reaches 6.9-13.8kg, and the mass is larger; and the assembly process is required to be manually assembled, so that the efficiency is low.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a heat conducting structural adhesive for a power battery pack of a new energy vehicle, and the technical problem to be solved by the present invention is: how to solve heat conduction gasket and use thickness to be on the large side, weight is on the high side and manual assembly's problem in new energy automobile power battery group.
In order to achieve the purpose, the invention provides the following technical scheme: a heat-conducting structural adhesive for a new energy automobile power battery pack comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of platinum catalyst, 5-10 parts of binder and 52-84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of hydrogen-containing silicone oil, 1-2 parts of a time delay agent, 5-10 parts of a binder and 50-83 parts of a modified heat-conducting filler.
In a preferred embodiment, the vinyl silicone oil is set to be a mixture of viscosity 1000cP and viscosity 10000cP, and the mass ratio of the A-component and the B-component is set to be 1: 1.
In a preferred embodiment, the adhesive is composed of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyl, epoxy resin E44 and epoxy resin E51, the mass ratio of the gamma-aminopropyltriethoxysilane, the gamma-methacryloxypropyl, the epoxy resin E44 and the epoxy resin E51 is set to be 1:3:2:4, and the time delay agent is set to be 1-ethynylcyclohexanol.
In a preferred embodiment, the modified heat conducting filler is provided by modified aluminum oxide and modified zinc oxide, and the mass ratio of the modified aluminum oxide to the modified zinc oxide is set to be 8.5: 1.5.
The invention also comprises a preparation method of the heat-conducting structural adhesive for the new energy automobile power battery pack, which comprises the following specific preparation steps:
the preparation process of the component A comprises the following steps:
a) preparing modified aluminum oxide/modified zinc oxide: taking 100 parts by mass of aluminum oxide/zinc oxide, adding 0.05-3 parts by mass of a mixture of n-propyltriethoxysilane and gamma-methacryloxypropyl, adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.1-0.3ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h at 80 ℃ in vacuum to finally obtain modified aluminum oxide/modified zinc oxide;
b) preparing vinyl silicone oil: uniformly stirring 100 parts by mass of vinyl silicone oil with the viscosity of 1000cP and 10000cP for 30min to obtain the vinyl silicone oil;
c) preparing a binder: uniformly stirring 10 parts by mass of gamma-aminopropyltriethoxysilane, 30 parts by mass of gamma-methacryloxypropyl, 10 parts by mass of epoxy resin E44 and 40 parts by mass of epoxy resin E51 for 30min to obtain a binder;
d) preparation of component A: taking the modified heat-conducting filler prepared in the steps a) to c): 52-84 parts by mass of vinyl silicone oil: 10-35 parts by mass of a binder: 5-10 parts by mass, and adding 1-3 parts by mass of a platinum catalyst, and uniformly stirring for 1h to obtain a component A;
the preparation process of the component B comprises the following steps:
s1, preparing a component B: uniformly stirring 10-35 parts by mass of vinyl silicone oil, 1-3 parts by mass of hydrogen-containing silicone oil, 1-2 parts by mass of time delay agent, 5-10 parts by mass of binder and 50-83 parts by mass of modified heat-conducting filler for 1 hour to obtain a component B.
In a preferred embodiment, the mass ratio of n-propyltriethoxysilane to gamma-methacryloxypropyl in step a) is set to 3: 1.
The invention has the technical effects and advantages that:
the heat-conducting structural adhesive is divided into A, B components, wherein the component A mainly comprises vinyl silicone oil, a platinum catalyst, a binder and a modified heat-conducting filler; the component B mainly comprises vinyl silicone oil, hydrogen-containing silicone oil, a time delay agent, a binder and a modified heat-conducting filler, after the two components are mixed, the platinum catalyst catalyzes the vinyl silicone oil and the hydrogen-containing silicone oil to carry out addition reaction and crosslinking, and heat-conducting structural adhesive is obtained after curing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Example 1:
the invention provides a heat-conducting structural adhesive for a power battery pack of a new energy automobile, which comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of platinum catalyst, 5-10 parts of binder and 52-84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of hydrogen-containing silicone oil, 1-2 parts of a time delay agent, 5-10 parts of a binder and 50-83 parts of a modified heat-conducting filler;
specifically, in the embodiment, the component A comprises the following raw materials in parts by weight: 10 parts of vinyl silicone oil, 1 part of platinum catalyst, 5 parts of binder and 84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10 parts of vinyl silicone oil, 1 part of hydrogen-containing silicone oil, 1 part of time delay agent, 5 parts of binder and 83 parts of modified heat-conducting filler;
the vinyl silicone oil is a mixture of 1000cP and 10000cP in viscosity, the mass ratio of the component A to the component B is set to be 1:1, the adhesive is composed of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyl, epoxy resin E44 and epoxy resin E51, the mass ratio of the gamma-aminopropyltriethoxysilane, the gamma-methacryloxypropyl, the epoxy resin E44 and the epoxy resin E51 is set to be 1:3:2:4, the time delay agent is set to be 1-ethynyl cyclohexanol, the modified heat-conducting filler is set to be modified aluminum oxide and modified zinc oxide, and the mass ratio of the modified aluminum oxide to the modified zinc oxide is set to be 8.5: 1.5.
The invention also comprises a preparation method of the heat-conducting structural adhesive for the new energy automobile power battery pack, which comprises the following specific preparation steps:
the preparation process of the component A comprises the following steps:
a) preparing modified alumina: taking 100 parts by mass of alumina, adding 0.05 part by mass of a mixture (the mass ratio is 3:1) of n-propyltriethoxysilane and gamma-methacryloxypropyl, adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.1ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h in vacuum at 80 ℃ to finally obtain modified alumina;
preparing modified zinc oxide: taking 100 parts by mass of zinc oxide, adding 0.05 part by mass of a mixture of n-propyltriethoxysilane and gamma-methacryloxypropyl (the mass ratio is 3:1), adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.1ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h in vacuum at 80 ℃ to finally obtain modified zinc oxide;
preparing modified heat-conducting filler: mixing 85 parts by mass of modified aluminum oxide and 15 parts by mass of zinc oxide to obtain a compound modified heat-conducting filler;
b) preparing vinyl silicone oil: uniformly stirring 100 parts by mass of vinyl silicone oil with the viscosity of 1000cP and 10000cP for 30min to obtain the vinyl silicone oil;
c) preparing a binder: uniformly stirring 10 parts by mass of gamma-aminopropyltriethoxysilane, 30 parts by mass of gamma-methacryloxypropyl, 10 parts by mass of epoxy resin E44 and 40 parts by mass of epoxy resin E51 for 30min to obtain a binder;
d) preparation of component A: taking the modified heat-conducting filler prepared in the steps a) to c): 84 parts by mass of vinyl silicone oil: 10 parts by mass of a binder: 5 parts by mass, adding 1 part by mass of a platinum catalyst, and uniformly stirring for 1h to obtain a component A;
the preparation process of the component B comprises the following steps:
s1, preparing a component B: uniformly stirring 10 parts by mass of vinyl silicone oil, 1 part by mass of hydrogen-containing silicone oil, 1 part by mass of time delay agent, 5 parts by mass of binder and 83 parts by mass of modified heat-conducting filler for 1 hour to obtain a component B.
Example 2:
the invention provides a heat-conducting structural adhesive for a power battery pack of a new energy automobile, which comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of platinum catalyst, 5-10 parts of binder and 52-84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of hydrogen-containing silicone oil, 1-2 parts of a time delay agent, 5-10 parts of a binder and 50-83 parts of a modified heat-conducting filler;
specifically, in the embodiment, the component A comprises the following raw materials in parts by weight: 35 parts of vinyl silicone oil, 3 parts of platinum catalyst, 10 parts of binder and 52 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 35 parts of vinyl silicone oil, 3 parts of hydrogen-containing silicone oil, 2 parts of a time delay agent, 10 parts of a binder and 50 parts of a modified heat-conducting filler;
the vinyl silicone oil is a mixture of 1000cP and 10000cP in viscosity, the mass ratio of the component A to the component B is set to be 1:1, the adhesive is composed of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyl, epoxy resin E44 and epoxy resin E51, the mass ratio of the gamma-aminopropyltriethoxysilane, the gamma-methacryloxypropyl, the epoxy resin E44 and the epoxy resin E51 is set to be 1:3:2:4, the time delay agent is set to be 1-ethynyl cyclohexanol, the modified heat-conducting filler is set to be modified aluminum oxide and modified zinc oxide, and the mass ratio of the modified aluminum oxide to the modified zinc oxide is set to be 8.5: 1.5.
The invention also comprises a preparation method of the heat-conducting structural adhesive for the new energy automobile power battery pack, which comprises the following specific preparation steps:
the preparation process of the component A comprises the following steps:
a) preparing modified alumina: taking 100 parts by mass of alumina, adding 3 parts by mass of a mixture of n-propyltriethoxysilane and gamma-methacryloxypropyl (the mass ratio is 3:1), adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.3ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h in vacuum at 80 ℃ to finally obtain modified alumina;
preparing modified zinc oxide: taking 100 parts by mass of zinc oxide, adding 3 parts by mass of a mixture of n-propyltriethoxysilane and gamma-methacryloxypropyl (the mass ratio is 3:1), adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.3ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h in vacuum at 80 ℃ to finally obtain modified zinc oxide;
preparing modified heat-conducting filler: mixing 85 parts by mass of modified aluminum oxide and 15 parts by mass of zinc oxide to obtain a compound modified heat-conducting filler;
b) preparing vinyl silicone oil: uniformly stirring 100 parts by mass of vinyl silicone oil with the viscosity of 1000cP and 10000cP for 30min to obtain the vinyl silicone oil;
c) preparing a binder: uniformly stirring 10 parts by mass of gamma-aminopropyltriethoxysilane, 30 parts by mass of gamma-methacryloxypropyl, 10 parts by mass of epoxy resin E44 and 40 parts by mass of epoxy resin E51 for 30min to obtain a binder;
d) preparation of component A: taking the modified heat-conducting filler prepared in the steps a) to c): 52 parts by mass of vinyl silicone oil: 35 parts by mass of a binder: 10 parts by mass of platinum catalyst, 3 parts by mass of platinum catalyst are added, and the mixture is uniformly stirred for 1 hour to obtain a component A;
the preparation process of the component B comprises the following steps:
s1, preparing a component B: uniformly stirring 35 parts by mass of vinyl silicone oil, 3 parts by mass of hydrogen-containing silicone oil, 2 parts by mass of time delay agent, 10 parts by mass of binder and 50 parts by mass of modified heat-conducting filler for 1 hour to obtain a component B.
Example 3:
the invention provides a heat-conducting structural adhesive for a power battery pack of a new energy automobile, which comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of platinum catalyst, 5-10 parts of binder and 52-84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of hydrogen-containing silicone oil, 1-2 parts of a time delay agent, 5-10 parts of a binder and 50-83 parts of a modified heat-conducting filler;
specifically, in the embodiment, the component A comprises the following raw materials in parts by weight: 22 parts of vinyl silicone oil, 2 parts of platinum catalyst, 7 parts of binder and 69 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 22 parts of vinyl silicone oil, 2 parts of hydrogen-containing silicone oil, 1.5 parts of a time delay agent, 7.5 parts of a binder and 67 parts of a modified heat-conducting filler;
the vinyl silicone oil is a mixture of 1000cP and 10000cP in viscosity, the mass ratio of the component A to the component B is set to be 1:1, the adhesive is composed of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyl, epoxy resin E44 and epoxy resin E51, the mass ratio of the gamma-aminopropyltriethoxysilane, the gamma-methacryloxypropyl, the epoxy resin E44 and the epoxy resin E51 is set to be 1:3:2:4, the time delay agent is set to be 1-ethynyl cyclohexanol, the modified heat-conducting filler is set to be modified aluminum oxide and modified zinc oxide, and the mass ratio of the modified aluminum oxide to the modified zinc oxide is set to be 8.5: 1.5.
The invention also comprises a preparation method of the heat-conducting structural adhesive for the new energy automobile power battery pack, which comprises the following specific preparation steps:
the preparation process of the component A comprises the following steps:
a) preparing modified alumina: taking 100 parts by mass of alumina, adding 1.5 parts by mass of a mixture (the mass ratio is 3:1) of n-propyltriethoxysilane and gamma-methacryloxypropyl, adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.2ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h in vacuum at 80 ℃ to finally obtain modified alumina;
preparing modified zinc oxide: taking 100 parts by mass of zinc oxide, adding 1.5 parts by mass of a mixture of n-propyltriethoxysilane and gamma-methacryloxypropyl (the mass ratio is 3:1), adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.2ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h in vacuum at 80 ℃ to finally obtain modified zinc oxide;
preparing modified heat-conducting filler: mixing 85 parts by mass of modified aluminum oxide and 15 parts by mass of zinc oxide to obtain a compound modified heat-conducting filler;
b) preparing vinyl silicone oil: uniformly stirring 100 parts by mass of vinyl silicone oil with the viscosity of 1000cP and 10000cP for 30min to obtain the vinyl silicone oil;
c) preparing a binder: uniformly stirring 10 parts by mass of gamma-aminopropyltriethoxysilane, 30 parts by mass of gamma-methacryloxypropyl, 10 parts by mass of epoxy resin E44 and 40 parts by mass of epoxy resin E51 for 30min to obtain a binder;
d) preparation of component A: taking the modified heat-conducting filler prepared in the steps a) to c): 69 parts by mass, vinyl silicone oil: 22 parts by mass of a binder: 7 parts by mass, adding 2 parts by mass of a platinum catalyst, and uniformly stirring for 1h to obtain a component A;
the preparation process of the component B comprises the following steps:
s1, preparing a component B: and uniformly stirring 22 parts by mass of vinyl silicone oil, 2 parts by mass of hydrogen-containing silicone oil, 1.5 parts by mass of time delay agent, 7.5 parts by mass of binder and 67 parts by mass of modified heat-conducting filler for 1 hour to obtain a component B.
Example 4:
the heat-conducting structural adhesive and the heat-conducting gasket on the market prepared in the above embodiments 1 to 3 were used for data detection, respectively, to obtain the following data:
| thickness/mm | Coefficient of thermal conductivity | Tensile strength/N | |
| Example 1 | 0.7 | 2.21 | 9.87 |
| Example 2 | 0.7 | 1.65 | 11.34 |
| Example 3 | 0.7 | 1.88 | 10.36 |
| Heat conducting gasket | 1.5 | 1.98 | 8.99 |
As can be seen from the above table, compared with the existing heat-conducting gasket, the heat-conducting structural adhesive prepared by the method of embodiments 1 to 3 has the use thickness of 0.7 to 0.8mm, the tensile strength of greater than 9.5N, the thickness of the heat-conducting gasket with the same tensile strength of more than 1.5mm, and the heat conductivity coefficients of the two are close, the weight of the heat-conducting structural adhesive is half of that of the heat-conducting gasket, the construction process can realize full-automatic dispensing, manual assembly is not needed, and the assembly efficiency is greatly improved.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (6)
1. The utility model provides a heat conduction structure is glued for new energy automobile power battery group which characterized in that: the composition comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of platinum catalyst, 5-10 parts of binder and 52-84 parts of modified heat-conducting filler, wherein the component B comprises the following raw materials in parts by weight: 10-35 parts of vinyl silicone oil, 1-3 parts of hydrogen-containing silicone oil, 1-2 parts of a time delay agent, 5-10 parts of a binder and 50-83 parts of a modified heat-conducting filler.
2. The heat-conducting structural adhesive for the power battery pack of the new energy automobile as claimed in claim 1, wherein: the vinyl silicone oil is set to be a mixture of 1000cP and 10000cP, and the mass ratio of the component A to the component B is set to be 1: 1.
3. The heat-conducting structural adhesive for the power battery pack of the new energy automobile as claimed in claim 2, wherein: the adhesive is composed of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyl, epoxy resin E44 and epoxy resin E51, the mass ratio of the gamma-aminopropyltriethoxysilane to the gamma-methacryloxypropyl to the epoxy resin E44 to the epoxy resin E51 is set to be 1:3:2:4, and the time delay agent is set to be 1-ethynylcyclohexanol.
4. The heat-conducting structural adhesive for the power battery pack of the new energy automobile as claimed in claim 3, wherein: the modified heat-conducting filler is composed of modified aluminum oxide and modified zinc oxide, and the mass ratio of the modified aluminum oxide to the modified zinc oxide is 8.5: 1.5.
5. The heat-conducting structural adhesive for the power battery pack of the new energy automobile as claimed in claim 4, wherein: the preparation method of the heat-conducting structural adhesive for the new energy automobile power battery pack comprises the following specific preparation steps:
the preparation process of the component A comprises the following steps:
a) preparing modified aluminum oxide/modified zinc oxide: taking 100 parts by mass of aluminum oxide/zinc oxide, adding 0.05-3 parts by mass of a mixture of n-propyltriethoxysilane and gamma-methacryloxypropyl, adding 10 parts by mass of water, 30 parts by mass of ethanol, adding 0.1-0.3ml of glacial acetic acid, stirring the powder for 20min, and baking the powder for 24h at 80 ℃ in vacuum to finally obtain modified aluminum oxide/modified zinc oxide;
b) preparing vinyl silicone oil: uniformly stirring 100 parts by mass of vinyl silicone oil with the viscosity of 1000cP and 10000cP for 30min to obtain the vinyl silicone oil;
c) preparing a binder: uniformly stirring 10 parts by mass of gamma-aminopropyltriethoxysilane, 30 parts by mass of gamma-methacryloxypropyl, 10 parts by mass of epoxy resin E44 and 40 parts by mass of epoxy resin E51 for 30min to obtain a binder;
d) preparation of component A: taking the modified heat-conducting filler prepared in the steps a) to c): 52-84 parts by mass of vinyl silicone oil: 10-35 parts by mass of a binder: 5-10 parts by mass, and adding 1-3 parts by mass of a platinum catalyst, and uniformly stirring for 1h to obtain a component A;
the preparation process of the component B comprises the following steps:
s1, preparing a component B: uniformly stirring 10-35 parts by mass of vinyl silicone oil, 1-3 parts by mass of hydrogen-containing silicone oil, 1-2 parts by mass of time delay agent, 5-10 parts by mass of binder and 50-83 parts by mass of modified heat-conducting filler for 1 hour to obtain a component B.
6. The preparation method of the heat-conducting structural adhesive for the power battery pack of the new energy automobile according to claim 5, wherein the preparation method comprises the following steps: the mass ratio of n-propyltriethoxysilane to gamma-methacryloxypropyl in step a) is set to 3: 1.
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| CN202010452609.8A CN111440592A (en) | 2020-05-26 | 2020-05-26 | Heat-conducting structural adhesive for new energy automobile power battery pack |
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| CN202010452609.8A CN111440592A (en) | 2020-05-26 | 2020-05-26 | Heat-conducting structural adhesive for new energy automobile power battery pack |
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| CN (1) | CN111440592A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977066A (en) * | 2018-08-08 | 2018-12-11 | 四川大学 | A kind of purposes of novel epoxy modified heat resistant liquid silastic |
| WO2019169609A1 (en) * | 2018-03-08 | 2019-09-12 | Dow Silicones Corporation | Self-adhesive silicone elastomer |
| CN110938406A (en) * | 2019-11-04 | 2020-03-31 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Bi-component organic silicon pouring sealant and preparation method thereof |
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2020
- 2020-05-26 CN CN202010452609.8A patent/CN111440592A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019169609A1 (en) * | 2018-03-08 | 2019-09-12 | Dow Silicones Corporation | Self-adhesive silicone elastomer |
| CN108977066A (en) * | 2018-08-08 | 2018-12-11 | 四川大学 | A kind of purposes of novel epoxy modified heat resistant liquid silastic |
| CN110938406A (en) * | 2019-11-04 | 2020-03-31 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Bi-component organic silicon pouring sealant and preparation method thereof |
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