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EVA hot melt adhesive for storage battery

A hot-melt adhesive and storage battery technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of batteries not meeting the requirements and life shortening

Inactive Publication Date: 2016-07-20
SHANGHAI JENTAI NANO SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The life of the existing EVA hot melt adhesive is shortened under acid corrosion or heavy metal salt corrosion, and it cannot meet the requirements when it is used for bonding terminal posts and pole groups of batteries.

Method used

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  • EVA hot melt adhesive for storage battery
  • EVA hot melt adhesive for storage battery
  • EVA hot melt adhesive for storage battery

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Effect test

Embodiment approach

[0046] As an embodiment of the present invention, the VA content in the EVA resin is 18-35% by weight, and the melt index is 25-400g / 10min.

[0047] In EVA hot-melt adhesives, the lower the VA content, the higher the crystallinity increases the hardness; the higher the VA content, the lower the crystallinity and the greater the elasticity. The choice of EVA melt index is also very important. The smaller the melt index, the poorer the fluidity, the higher the strength, the higher the melting temperature, and the poorer the wetting and permeability of the adherend; better, but lower bond strength.

[0048] As a preferred embodiment of the present invention, the VA content in the EVA resin is 20-32% by weight, and the melt index is 30-350g / 10min.

[0049] Vinyl fused ring mixture

[0050] Vinyl fused ring mixtures include acylated vinyl fused ring compounds and unacylated vinyl fused ring compounds selected from 2-vinyl-1-benzofuran or 2-vinyl- 1-Benzothiophene.

[0051] As...

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Abstract

An EVA hot melt adhesive for a storage battery is at least prepared from, by weight, 100 parts of EVA resin, 5-10 parts of a vinyl condensed ring mixture, 2-5 parts of alpha-olefin containing an aromatic ring substituent group, 20-40 parts of tackifier, 12-18 parts of a viscosity modifier, 0.01-0.5 part of an antioxidant, 0.05-0.2 part of an initiating agent and 30-40 parts of packing, wherein the vinyl condensed ring mixture comprises an acylated vinyl condensed ring compound and an non-acylated vinyl condensed ring compound, the vinyl condensed ring compound is selected from 2-vinyl-1-benzofuran or 2-vinyl-1-benzothiophene, and the aromatic ring substituent group contains elemental sulphur.

Description

technical field [0001] The invention relates to the field of hot-melt adhesives, in particular to EVA hot-melt adhesives for storage batteries, and to a preparation method for EVA hot-melt adhesives for storage batteries. Background technique [0002] Hot melt adhesive is known as "green" adhesive due to its solvent-free, pollution-free, fast curing speed, and good process performance. It is solid at room temperature, and when heated and melted to a certain extent, it becomes fluid and viscous. After melting, it becomes Light brown translucent body or white. The scope of application of hot-melt adhesives is getting wider and wider. It has expanded from the traditional packaging field (book binding, sanitary products) to clothing, shoemaking and other industries, and has also been used in refrigerators, cables and automobiles and other electronic and electrical fields. [0003] Existing hot-melt adhesives have problems such as low bonding strength, short service life, and st...

Claims

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Application Information

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IPC IPC(8): C09J123/08C09J11/04C09J11/06C09J11/08
CPCC08K2201/014C08L2205/03C09J11/04C09J11/06C09J11/08C09J123/0853C09J2301/304C08L45/00C08L23/06C08K13/02C08K5/1535C08K5/45
Inventor 史立秀林进森
Owner SHANGHAI JENTAI NANO SCI & TECH CO LTD
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