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Rubber material for producing alkali-fast battery reservoir

A technology of rubber material and liquid storage bag, applied in battery pack parts, circuits, electrical components, etc., can solve problems such as poor tearing

Inactive Publication Date: 2008-08-20
天津市振海橡胶科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary ethylene-propylene rubber compounds generally have the disadvantage of poor tearability, which needs to be improved from aspects such as formula and molding process, which is the problem to be solved by the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Click on the weight ratio formula of the rubber material: ethylene propylene rubber EP35: 65 parts, ethylene propylene rubber EP4640: 35 parts, ZnO: 5 parts, stearic acid: 1.2 parts, Si-69: 1 part, anti-aging agent A: 1 part , white carbon black: 7 parts, high wear-resistant carbon black: 45 parts, naphthenic oil: 29 parts, release agent TM-80: 1 part, accelerator CZ: 1.8 parts, accelerator DM: 1.2 parts, accelerator DTDM: 0.4 parts, S: 1.1 parts, Coumaron: 1 part.

[0024] To make:

[0025] The first step: mastication: Add ethylene propylene rubber EP35 and ethylene propylene rubber EP4640 into the internal mixer, and masticate for 1 minute at a speed of 36 rpm.

[0026] Step 2: Mixing: Open the feeding door and add zinc oxide, anti-aging agent, mold release agent TM-80, 1 / 2 carbon black and mix for 1.5 minutes, then add naphthenic oil, Si69, white carbon black and the remaining carbon Black mixing for 1.5 minutes, then adding stearic acid, after the temperature of t...

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Abstract

The invention provides a formula for preparing the rubber material of a sac of alkali resistant batteries; the weight ratios are as follows: 65 portions of ethylene propylene rubber EP35, 35 portions of ethylene propylene rubber EP 4640, 5 portions of ZnO, 1.2 portions of stearic acid, 1 portion of Si-69, 1 portion of age inhibitor A, 7 portions of white carbon black, 45 portions of high-abrasion carbon black, 29 portions of naphthenoid oil, 1 portion of parting agent TM-80, 1.8 portions of promoter CZ, 1.2 portions of promoter DM, 0.4 portion of promoter DTDM, 1.1 portions of S and 1 portion of coumarone; the sac material for preparation have the following performances: tensile strength of not less than 8MPa, maximum elongation of not less than 250 percent, tearing strength of not less than 18kN / m, hardness (sauer A) of 60 to 65 degrees; alkali resistance: the product can resist 35 percent KOH and can be immersed for 72 hours at the temperature of 70 DEG C; the changing rate of the tensile strength is less than 15 percent; the changing rate of the tensile strength is less than 20 percent; the temperature of the using environment is minus 30 to 60 DEG C; the adoption of an inner-placed parting agent solves the parting difficulty after vulcanizing shaping.

Description

Technical field: [0001] The invention belongs to a rubber material, in particular to a rubber material made of ethylene-propylene rubber for an alkali-resistant battery liquid storage bag. Background technique: [0002] As a fully saturated main chain rubber, ethylene propylene rubber has high chemical stability, high thermal stability and excellent weather resistance. At the same time, it has chemical resistance. Due to the chemical stability and non-polarity of ethylene-propylene rubber itself, it does not react with most chemicals. It is either incompatible or has little compatibility with polar substances. Therefore, High resistance to these drugs. [0003] The concentration of lye used in large alkaline batteries is as high as 35%, which requires the liquid storage bag used to hold lye to have excellent alkali resistance. At the same time, due to the large size of the liquid storage bag, it needs to withstand a certain internal pressure, which requires the materials u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K5/09H01M2/00C08K3/04H01M50/193
CPCY02E60/10
Inventor 邵巍
Owner 天津市振海橡胶科技发展有限公司
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