A kind of acrylic structural glue bonded to the aluminum casing of flame-retardant power battery and its preparation method

A power battery and acrylate technology, applied in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of a large number of pores and lines on the surface of the adhesive layer, reduced battery safety performance, uncontrollable heat generation, etc. problem, achieve the effect of avoiding danger caused by heat accumulation, reducing heat, and lowering temperature

Active Publication Date: 2020-09-08
HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing acrylate structural adhesives are used, the heat generation cannot be controlled, and a large amount of mixing (above 10g) will cause a violent exothermic reaction, resulting in a large number of pores and lines on the surface of the adhesive layer; the bonded power battery is used During the process, if the vehicle vibrates or the ambient temperature changes, the internal structure of the battery will change, the safety performance of the battery will be reduced, it is more dangerous, and even combustion will occur, causing car crashes and accidents.

Method used

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  • A kind of acrylic structural glue bonded to the aluminum casing of flame-retardant power battery and its preparation method

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preparation example Construction

[0049] The present invention also provides a method for preparing the acrylate structural adhesive bonded to the aluminum case of the flame-retardant power battery as described above, which includes the following steps:

[0050] Prepare the oxidizing agent component and the reducing agent component, and the sequence of preparing the oxidizing agent component and the reducing agent component is not limited;

[0051] The preparation method of the oxidant component is: add isobornyl methacrylate, 2-phenoxyethyl acrylate, 3,3,5-trimethylcyclohexane methacrylate and nitrile rubber into the dynamic mixer Inside, stir at high speed until the nitrile rubber is completely dissolved, add methyl methacrylate-butyl acrylate diblock copolymer, flame retardant and stabilizer, stir at high speed for 0.5 to 1 hour, then add peroxide, stir at low speed for 0.5 ~1 hour to obtain the oxidizing agent component;

[0052] The preparation method of the reducing agent component is: adding tetrahydro...

Embodiment 1

[0057] Add 30 parts of isobornyl methacrylate, 12 parts of 2-phenoxyethyl acrylate, 8 parts of 3,3,5-trimethylcyclohexane methacrylate and 10 parts of nitrile rubber into the dynamic mixer Inside, stir at high speed until the nitrile rubber is completely dissolved, add 8 parts of methyl methacrylate-butyl acrylate diblock copolymer, 25 parts of flame retardant and 2 parts of stabilizer, stir at high speed for 0.5 to 1 hour, then add 5 Parts of peroxide, stirred at low speed for 0.5 to 1 hour to obtain the oxidizing agent component;

[0058] Add 35 parts of tetrahydrofurfuryl alcohol methacrylate, 8 parts of isooctyl methacrylate, 6 parts of 2-hydroxyethyl methacrylate phosphate and 8 parts of carboxyl-terminated neoprene rubber into the dynamic mixer, and stir at high speed Until the carboxyl-terminated modified chloroprene rubber is completely dissolved, add 8 parts of methyl methacrylate-butyl acrylate diblock copolymer, 28 parts of flame retardant, 2 parts of auxiliary agen...

Embodiment 2

[0061] Add 40 parts of isobornyl methacrylate, 15 parts of 2-phenoxyethyl acrylate, 5 parts of 3,3,5-trimethylcyclohexane methacrylate and 5 parts of nitrile rubber into the dynamic mixer Inside, stir at high speed until the nitrile rubber is completely dissolved, add 10 parts of methyl methacrylate-butyl acrylate diblock copolymer, 15 parts of flame retardant and 4 parts of stabilizer, stir at high speed for 0.5 to 1 hour, then add 6 Parts of peroxide, stirred at low speed for 0.5 to 1 hour to obtain the oxidizing agent component;

[0062] Add 40 parts of tetrahydrofurfuryl alcohol methacrylate, 5 parts of isooctyl methacrylate, 8 parts of 2-hydroxyethyl methacrylate phosphate and 5 parts of carboxyl-terminated neoprene into the dynamic mixer, high speed Stir until the carboxyl-terminated modified chloroprene rubber is completely dissolved, add 10 parts of methyl methacrylate-butyl acrylate diblock copolymer, 20 parts of flame retardant, 5 parts of auxiliary agent and 2 parts...

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Abstract

The invention discloses an acrylic structural adhesive bonded to an aluminum shell of a flame-retardant power battery, which comprises an oxidizing agent component and a reducing agent component, and the volume ratio of the oxidizing agent component and the reducing agent component is 1:1; the oxidizing agent component Including isobornyl methacrylate, 2-phenoxyethyl acrylate, 3,3,5-trimethylcycloethane methacrylate, nitrile rubber, methyl methacrylate-butyl acrylate Block copolymers, flame retardants, peroxides and stabilizers; reducing agent components include tetrahydrofurfuryl methacrylate, isooctyl methacrylate, 2‑hydroxyethyl methacrylate phosphate, terminal Carboxyl-modified neoprene, methyl methacrylate-butyl acrylate diblock copolymer, flame retardant, substituted thiourea, cobalt naphthenate, additives and stabilizers. The invention also discloses a preparation method. When the invention is in use, the heat release is low, no air holes and lines appear on the surface of the adhesive layer, and it can also play a role of flame retardancy, effectively improving the safety and reliability of the battery.

Description

technical field [0001] The invention relates to the technical field of acrylic structural adhesives, in particular to an acrylic structural adhesive bonded to an aluminum shell of a flame-retardant power battery and a preparation method thereof. Background technique [0002] As a power source for electric vehicles, electric trains, etc., power batteries require not only high energy and power, but also high energy density and safety and reliability. [0003] At present, the packaging of the aluminum shell of the square power battery and the bonding of the structure between the aluminum shell and the battery pack are usually realized by the second-generation acrylate structural adhesive. The main reason is that the second-generation acrylic structural adhesive is a fully reactive two-component acrylic structural adhesive, which has many advantages, such as fast curing at room temperature and adjustable curing speed, and it can be bonded to the oil surface without strict requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/06C09J11/04C09J11/08
CPCC09J4/06C09J11/04C09J11/06C09J11/08
Inventor 张浩军刘苏宇韩胜利吴正明章锋
Owner HUBEI HUITIAN NEW MATERIALS STOCK CO LTD
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