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Easy-to-produce and highly corrosion-resistant valve rubber composition

A technology for corrosion-resistant rubber parts, which is applied in the field of rubber parts for valves. It can solve problems such as insufficient product reliability, poor elasticity, and difficulty in meeting high-reliability requirements for high-corrosion valves, and achieve excellent flex crack resistance and Dynamic fatigue performance, comprehensive performance improvement, and the best demoulding effect

Inactive Publication Date: 2011-12-14
江苏江华阀业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many similar patents, but these patents have a common disadvantage, mainly poor elasticity, and the reliability of the product is not good enough, it is difficult to meet the high reliability requirements of high-corrosion valves for rubber quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: an easy-to-produce and highly corrosion-resistant valve rubber composition, made of the following materials by weight: 60 / 40 EPDM rubber 52KG, active zinc oxide 3KG, organic active agent stearic acid 0.5KG, N220 carbon black 13KG, N330 carbon black 18KG, dimethyl phthalate 1KG, dispersant 1KG, sulfur 0.8KG, dicumyl peroxide 0.4KG, accelerator 2KG, flow agent 2.1KG, zinc oxide 5KG, antioxidant 3.5KG, liquid softener 9KG, N,N'-diphenyl-p-phenylenediamine 0.8KG, crack inhibitor 4KG, 2% water emulsified silicone mold release agent 1KG.

Embodiment 2

[0012] Embodiment 2: an easy-to-produce and highly corrosion-resistant valve rubber composition, made from the following materials by weight: 60 / 40 EPDM rubber 55KG, active zinc oxide 5KG, organic active agent stearic acid 0.7KG, N220 carbon black 18KG, N330 carbon black 22KG, dimethyl phthalate 3KG, dispersant 2KG, sulfur 1KG, dicumyl peroxide 0.6KG, accelerator 2KG, flow agent 2.1KG, zinc oxide 5KG , Anti-aging agent 4.5KG, liquid softener 12KG, N,N'-diphenyl-p-phenylenediamine 0.8-1.2KG, crack inhibitor 5.2KG, 2% water emulsified silicone mold release agent 3KG.

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PUM

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Abstract

The invention is an easy-to-produce and highly corrosion-resistant valve rubber composition, which is made of the following materials in weight percent: 52-55 parts by weight of 60 / 40 EPDM rubber, 3-5 parts by weight of active zinc oxide, 0.5-0.7 parts by weight of organic active agent stearic acid, 13-18 parts by weight of N220 carbon black, 18-22 parts by weight of N330 carbon black, 1-3 parts by weight of dimethyl phthalate, and 1-2 parts by weight of dispersant , 0.8 to 1 parts by weight of sulfur, 0.4 to 0.6 parts by weight of dicumyl peroxide, 2 parts by weight of accelerator, 2.1 parts by weight of flow agent, 5 parts by weight of zinc oxide, 3.5 to 4.5 parts by weight of antioxidant, 9 parts by weight of liquid softener ~12 parts by weight, 0.8~1.2 parts by weight of N,N'-diphenyl-p-phenylenediamine, 4~5.2 parts by weight of crack preventing agent, and 1~3 parts by weight of 2% water-emulsified silicone mold release agent. The invention is characterized in that the formula is more reasonable, the prepared rubber composition is easy to demould during production, the overall appearance is good, and it is highly corrosion-resistant.

Description

technical field [0001] The present invention relates to a rubber composition, in particular to a valve rubber composition that is easy to produce and has strong corrosion resistance. Background technique [0002] Under the strong corrosion, toxic and harmful process conditions, ordinary valves often have poor sealing performance, easy leakage, easy perforation of the shell, short service life, and cannot meet the special requirements of long-term effective transportation of toxic media. In order to meet the needs of long-term effective transportation of toxic media, some units and individuals have developed special valves suitable for the transportation of highly corrosive media. In order to ensure safety effects, rubber spacers are often installed around the valve. According to different use requirements, there are often different material formulas, and some units or individuals have also applied for invention patents on such rubber compositions. [0003] For example, on A...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/22C08K5/09C08K3/04C08K5/12C08K3/06C08K5/14C08K5/18C08K5/54
Inventor 陈善俊张国华
Owner 江苏江华阀业有限公司
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