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Acrylic ester pressure-sensitive adhesive tape and preparation method thereof and lithium ion battery

A technology of acrylate and pressure-sensitive tape, which is applied to secondary batteries, secondary battery parts, circuits, etc., can solve the problem that acrylate pressure-sensitive tape is not resistant to electrolytes, etc., and achieves simple production, convenient use and safe use. effect of mission

Active Publication Date: 2014-07-09
SHENZHEN MEIXIN ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problem that the existing acrylic pressure-sensitive adhesive tape is not resistant to electrolyte, the present invention provides an acrylic acid that is simple to make, easy to use, low in cost, has sufficient viscosity and durability, and can withstand long-term immersion in electrolyte Ester pressure-sensitive adhesive tape, preparation method thereof, and lithium-ion battery using the acrylate pressure-sensitive adhesive tape

Method used

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  • Acrylic ester pressure-sensitive adhesive tape and preparation method thereof and lithium ion battery

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Embodiment approach

[0019] In a preferred embodiment of the present invention, for example, the acrylate monomers in the specific examples include (meth) laurate, isooctyl acrylate, acrylic acid and hydroxyethyl acrylate, and the prepared pressure-sensitive adhesive tape exhibits excellent The electrolyte resistance of the lithium-ion battery is only a little bit warped after being soaked in the electrolyte, and the bonding area is less than 5%.

[0020] Preferably, relative to 100 parts by weight of acrylate monomers, the acrylate monomers include 40 to 90 parts by weight of the first acrylate monomer, 1 to 40 parts by weight of the second acrylate monomer, 1 to 15 parts by weight parts of the third acrylate monomer.

[0021] Preferably, the crosslinking curing agent is selected from one or more of polyisocyanate compounds, curing agents with epoxy functional groups, metal ion chelates and aziridine curing agents. Further preferred crosslinking curing agents are polyisocyanate compounds. Throu...

Embodiment 1

[0044] (1): Preparation of acrylate copolymer:

[0045] Add 9.0 parts by weight of laurate (meth)acrylate, 29.2 parts by weight of isooctyl acrylate, 1.4 parts by weight of acrylic acid and 0.4 parts by weight of hydroxyethyl acrylate into the reactor and stir evenly, then add 45 parts by weight of In the mixed solvent that the toluene of ethyl acetate and 15 weight parts forms, and pass into nitrogen to discharge the oxygen in the reactor and material, and keep certain pressure, stir evenly, and heat up while stirring, the material temperature in the reactor Raise to 60°C, keep it, add 0.06 parts by weight of azobisisobutylcyanide initiator, then raise the temperature to 65°C~75°C to start the reaction, keep the temperature of the reaction kettle stable, and keep the reaction for 8~15 hours. After cooling to 35°C~45°C, the material is discharged for later use. The solid content is 60%+ / -5%, and the viscosity is 3000~15000cps.

[0046] (2): Preparation of release layer

[00...

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Abstract

The invention provides an acrylic ester pressure-sensitive adhesive tape and a preparation method of the acrylic ester pressure-sensitive adhesive tape and a lithium ion battery using the acrylic ester pressure-sensitive adhesive tape. The acrylic ester pressure-sensitive adhesive tape comprises a substrate and pressure-sensitive adhesive on the surface of the substrate, wherein the pressure-sensitive adhesive comprises an acrylic ester copolymer and a crosslinking and curing agent; the acrylic ester copolymer is obtained by the polymerization of acrylic ester monomers; the acrylic ester monomers comprise a first acrylic ester monomer, a second acrylic ester monomer and a third acrylic ester monomer; the first acrylic ester monomer comprises the acrylic ester monomer with low glass-transition temperature; the second acrylic ester monomer comprises the acrylic ester monomer with high glass-transition temperature; the third acrylic ester monomer comprises functional acrylic ester monomer. The acrylic ester pressure-sensitive adhesive tape is easy to produce, convenient to use, and low in cost, has sufficient viscosity and durability, and can withstand long-time soaking in electrolyte.

Description

technical field [0001] The invention relates to an acrylate pressure-sensitive adhesive tape, a preparation method thereof and a lithium ion battery using the acrylate pressure-sensitive adhesive tape. Background technique [0002] Lithium-ion battery is an important product of new energy. It has the advantages of no pollution, high capacity and long cycle life. It is widely used in automotive power batteries, tool batteries, network energy and other fields, and its safety performance and other requirements are also increasing. higher. [0003] At present, in the assembly and production process of lithium-ion batteries, adhesive tape is generally used to fix, insulate and protect the cells, tabs and termination parts of lithium-ion batteries, which is simple and low in cost. However, the tape will come into contact with the electrolyte of the lithium-ion battery during the battery assembly process and the later application process. Therefore, the tape used in the lithium-io...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J133/08C09J11/06C08F220/18C08F220/06C08F220/28H01M10/0525H01M10/02
CPCY02E60/10
Inventor 李周
Owner SHENZHEN MEIXIN ELECTRONICS
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