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Adhesive and electrochemical device

A technology of adhesives and accelerators, applied in the field of energy storage, can solve problems such as poor moisture and heat aging resistance, meet performance requirements, meet bond strength, increase toughness and fatigue resistance

Inactive Publication Date: 2019-08-20
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since lithium-ion power batteries need to be exposed to harsh conditions such as humid heat, cold and heat cycles, and repeated fatigue vibrations under working conditions for a long time, traditional epoxy resin or polyurethane adhesives cannot meet the requirements of lithium-ion power batteries for resin composite materials and metal substrates. It has high bonding strength, long-term high and low temperature resistance and heat and humidity shock resistance, salt spray corrosion resistance, and repeated fatigue vibration performance requirements under long-term working conditions; while traditional acrylic adhesives have high bonding strength and excellent resistance to Fatigue performance, but its resistance to hot and humid aging is not good

Method used

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  • Adhesive and electrochemical device
  • Adhesive and electrochemical device
  • Adhesive and electrochemical device

Examples

Experimental program
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Effect test

preparation example

[0067] 1) Under stirring conditions, after adding 45.00g γ-methacryloxypropyltrimethoxysilane, 5.15g deionized water and 0.09g tetramethylammonium hydroxide (20% aqueous solution) into the three-necked flask, at 40 Reflux at constant temperature for 2 hours at °C to obtain solution A;

[0068] 2) Under stirring conditions, dissolve 30.89g of trimethylchlorosilane in 54.00mL of methanol to obtain solution B;

[0069] 3) Under the conditions of stirring and nitrogen protection, pour solution B into solution A at 60°C, and reflux at constant temperature at 60°C for 6 hours, and obtain the crude product after vacuum distillation;

[0070] 4) After the crude product is dissolved in dichloromethane, the insoluble matter is filtered off, and after vacuum distillation and vacuum drying, a hyperbranched silicone resin containing an active functional group of methacryloxypropyl is obtained.

Embodiment 1

[0072] Component A: Take 40 parts by weight of methyl methacrylate, 5 parts by weight of styrene-butadiene-styrene block copolymer, and 30 parts by weight of methacryloyl methacrylate containing active functional groups obtained in the preparation examples. Hyperbranched silicone resin of oxypropyl, 0.05 parts by weight of N, N-dimethylaniline, 0.01 parts by weight of hydroquinone and 0.05 parts by weight of methyl silicone oil; B component: take 50 parts by weight of over Oxidized phthaloyl, 30 parts by weight of dimethyl phthalate, 2 parts by weight of styrene-butadiene-styrene block copolymer, mix components A and B evenly to obtain Adhesive1.

Embodiment 2

[0074] Component A: get 60 parts by weight of ethyl methacrylate, 20 parts by weight of nitrile rubber, 10 parts by weight of the hyperbranched silicone resin containing active functional groups obtained by the preparation example as methacryloxypropyl group, 0.05 parts by weight of n-butyraldehyde-aniline condensate, 0.01 parts by weight of benzoquinone and 0.05 parts by weight of methyl silicone oil; component B: get 70 parts by weight of lauroyl peroxide, 40 parts by weight of diphthalic acid di Ethyl ester and 4 parts by weight of diethyl phthalate, and components A and B were mixed uniformly to obtain adhesive 2.

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Abstract

The invention relates to an adhesive. The adhesive comprises a component A and a component B, the component A comprises an acrylate monomer, an elastomer and an accelerant, and the component B comprises a peroxidant, a plasticizer and an elastomer; and the component A further comprises hyperbranched silicone resin containing active functional groups. According to the adhesive provided by the invention, after the hyperbranched silicone resin containing the active functional groups is added, the hyperbranched silicone resin containing the active functional groups synergizes with other substancesin the adhesive, so that the toughness, fatigue resistance and moisture resistance of the adhesive are increased, the adhesive can not only meet the requirements of a lithium ion battery box on bondstrength, fatigue impact under long-term working conditions and resistance to high and low temperature cycle impact, but also meet the performance requirements of damp heat cycle impact.

Description

technical field [0001] The invention relates to the field of energy storage, in particular to an adhesive and an electrochemical device. Background technique [0002] Electric vehicles, as a new type of environmentally friendly vehicles, are the future development trend. But for a long time, electric vehicles have been subject to technical bottlenecks such as cost and short mileage. With the advancement of technology, the most critical component of electric vehicles, the power battery box, has also been technologically innovated. From the aluminum alloy-based power battery box to the current fiber-reinforced resin-based composite box, the capacity, life and cost of the battery are constantly being optimized. However, due to the complexity and diversity of the battery box structure and the materials of key components, it is necessary to develop a high-performance structural adhesive suitable for bonding fiber-reinforced resin-based composite materials and metal inserts in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J153/02C09J111/00C09J109/02
CPCC08L2203/20C08L2205/025C08L2205/03C08L2205/035C09J109/02C09J183/04C08L53/02C08L83/04C08L11/00C08L9/02
Inventor 张文丛马林
Owner CONTEMPORARY AMPEREX TECH CO
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