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Rubber membrane sheet

A rubber diaphragm and rubber technology, applied in the field of rubber products, can solve the problems of oil resistance to be improved, and achieve the effect of excellent oil resistance

Active Publication Date: 2016-04-27
SHANGHAI JIAFU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the oil resistance of the product still needs to be improved

Method used

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  • Rubber membrane sheet
  • Rubber membrane sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1-3

[0036] The rubber compositions of Examples 1-4 were prepared according to the formulation listed in Table 1. Operate according to the aforementioned steps, and apply 3-4g of nano-alumina per unit area of ​​the rubber sheet. The operations of Examples 1-4 were repeated, but no nano-alumina was applied, as Comparative Examples 1-4 respectively.

[0037] Table 1. Raw material proportioning of embodiment 1-4

[0038]

[0039] *The vulcanizing agent is a mixture of sulfur and dithiodimorpholine (DTDM); the accelerator is N,N'-tetramethyldithiodithiocarbamide (TMTD)

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Abstract

The invention provides a rubber membrane sheet. The rubber membrane sheet comprises a gray fabric and a rubber material coating two sides of the gray fabric. The rubber membrane sheet is characterized in that the outer surface of the rubber membrane sheet contains nanometer alumina. Preferably, a use amount of nanometer alumina in each one rubber layer is 2-4g / m<2>. The rubber membrane sheet has excellent oil resistance.

Description

technical field [0001] This invention relates to rubber articles. Background technique [0002] In vehicles such as cars and motorcycles, it is often necessary to use a rubber diaphragm, such as: rubber diaphragms for gasoline and diesel engines, rubber diaphragms for automobile distributors, rubber diaphragms for automatic regulating valves, and air pressure protection valve diaphragms film etc. These diaphragms need to be flexible, oil resistant, high temperature resistant, low temperature resistant, long service life and sufficient strength, 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. For example, Chinese patent ZL200510004994.5 proposes a polyurethane rubber diaphragm, which uses 100 parts of polyurethane raw rubber HA-5, 0.4-0.8 parts of stearic acid SA, 32-40 parts of carbon black SANG110 and 3.2-4.0 parts ...

Claims

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Application Information

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IPC IPC(8): B32B25/08B32B25/14B32B27/04B32B37/00B32B38/18C08L9/02C08L9/00C08L9/06C08L7/00C08L11/00C08K3/36
Inventor 兰平章斌
Owner SHANGHAI JIAFU NEW MATERIAL TECH CO LTD