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Rubber membrane

A rubber diaphragm and rubber material technology, applied in the direction of rubber layered products, layered products, chemical instruments and methods, etc., can solve the problems of oil resistance and low temperature resistance that need to be improved, and achieve good elasticity, easy implementation, and low cost. Effect of Low Temperature Resistance

Inactive Publication Date: 2015-06-03
招远市东晟橡胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, although the existing rubber diaphragms have good mechanical properties, their oil resistance and low temperature resistance still need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A rubber diaphragm, which is composed of gray cloth and rubber material covered on both sides, the components of the rubber material are calculated in parts by weight: 30 parts of styrene-butadiene rubber, 25 parts of ethylene-propylene rubber, 5 parts of silicon dioxide and 1 part paraffin oil.

Embodiment 2

[0014] A rubber diaphragm, consisting of a gray cloth and a rubber material covered on both sides, the components of the rubber material are in parts by weight: 55 parts of styrene-butadiene rubber, 35 parts of ethylene-propylene rubber, 10 parts of silicon dioxide and 3 parts paraffin oil.

Embodiment 3

[0016] A rubber diaphragm, which is composed of gray cloth and rubber material covered on both sides, the components of the rubber material are calculated in parts by weight: 40 parts of styrene-butadiene rubber, 30 parts of ethylene-propylene rubber, 8 parts of silicon dioxide and 2 parts paraffin oil.

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PUM

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Abstract

The invention belongs to the field of rubber compositions and particularly relates to a rubber membrane. The rubber membrane is composed of blank cloth and rubber materials covering the two sides of the blank cloth, wherein the rubber material is composed of the following components in parts by weight: 30-55 parts of butadiene styrene rubber, 25-35 parts of ethylene propylene rubber, 5-10 parts of silicon dioxide and 1-3 parts of paraffin oil. The rubber composition has relatively low low-temperature-resisting performance under the conditions that good oil resistance and adhering force are kept. The rubber membrane obtained by the scheme has the adhering force which is not lower than 35Mpa at -50 DEG C, still has good elasticity and has no hardening phenomenon. A preparation method of the rubber membrane has a simple process and is convenient to implement.

Description

technical field [0001] The invention belongs to the field of rubber compositions, in particular to a rubber diaphragm. Background technique [0002] In vehicles such as cars and motorcycles, it is often necessary to use a rubber diaphragm, such as: rubber diaphragms for mechanical pumps, rubber diaphragms for automobile distributors, rubber diaphragms for automatic regulating valves, and air pressure protection valve diaphragms film etc. These diaphragms require high oil resistance and low temperature resistance, especially in cold regions, it is often required that the diaphragm can withstand low temperatures below -35°C. However, the performance of the diaphragm in the prior art cannot meet the above requirements. [0003] At present, domestically produced oil-resistant diaphragms have a high rate of oil-resistant weight change in gasoline or gasoline plus benzene, and the working temperature is only -30°C~+80°C, and the diaphragm will harden and lose elasticity below -3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/10B32B25/14C08L9/06C08L23/16C08K3/36C08K5/01
Inventor 石德龙
Owner 招远市东晟橡胶制品有限公司
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