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A kind of vulcanized nitrile rubber composition and preparation method thereof

A rubber composition and a technology for vulcanizing nitrile, which are applied in the field of vulcanized nitrile rubber composition and its preparation, can solve the problem of room temperature vulcanization of nitrile-butadiene block-shaped solid block rubber, inability to obtain C-C type cross-linked bond products, No mention of ultra-high reactive peroxide room temperature vulcanization and other issues, to achieve the effect of simple components and fast vulcanization

Active Publication Date: 2017-10-17
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Hu Shaozhi et al. mentioned a room temperature vulcanized nitrile rubber glue in "Natural Vulcanization Phenomenon of Butadiene Rubber", using sulfur and super speed accelerator dithiotetramethylthiuram, hexamethylenetetramine, etc. Carry out room temperature vulcanization of nitrile rubber glue, but this method does not mention the room temperature vulcanization of nitrile block solid block rubber, nor does it mention the use of ultra-high active peroxides for room temperature vulcanization, and the C-C type cannot be obtained using this method Cross-linked products
[0003] CN99117023.7 mentioned the method for producing rubber products by room temperature vulcanization, and explained that room temperature vulcanization agents or room temperature accelerators can be used, but did not describe specific room temperature vulcanization agents, nor did it mention the use of ultra-high activity peroxides for room temperature vulcanization. Vulcanization, and no reference is made to C-C type room temperature vulcanization products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 100 parts of Lanzhou Petrochemical nitrile rubber 3305, put it into the open mixer and start mixing, and add 50 parts of carbon black N330, 1 part of accelerator CZ, 3 parts of zinc oxide, and 1 part of stearic acid to make it mixed After uniformity, add 1 part of pivalate pivalate and mix evenly. Use a flat vulcanizer to press the compounded rubber into tablets at room temperature, and keep the pressure for 10 hours to obtain the product.

Embodiment 2

[0027] Take 100 parts of Lanzhou Petrochemical nitrile rubber 3305, put it into the open mixer and start mixing, and add 50 parts of carbon black N330, 1 part of accelerator CZ, 3 parts of zinc oxide, and 1 part of stearic acid to make it mixed After uniformity, add 1 part of pivalyl peroxypivalate and mix evenly. Use a flat vulcanizer to press the mixed rubber into tablets at room temperature, and keep the pressure for 24 hours to obtain the product.

Embodiment 3

[0029] Take 100 parts of Lanzhou Petrochemical nitrile rubber 3305, put it into an open mixer and start mixing, and add 70 parts of carbon black N550, 1.1 parts of accelerator CZ, 4 parts of zinc oxide, and 1 part of stearic acid to make it mixed After uniformity, add 3 parts of pivalyl peroxypivalate and mix evenly. Use a flat vulcanizer to press the mixed rubber into tablets at room temperature, and keep the pressure for 30 hours to obtain the product.

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PUM

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Abstract

The invention provides a vulcanized nitrile rubber composition and a preparation method thereof. Specifically, 100 parts by mass of nitrile rubber, a filler, a vulcanization activator, a vulcanization accelerator, 0.1 to 10 parts by mass of pivalic acid pivalate peroxide The ester is fully mixed with an open mill, and then the mixed rubber is molded at room temperature and kept under pressure for 10 to 72 hours to complete the vulcanization and obtain the product. The present invention uses pivalate to carry out cross-linking, does not need the compounding of ultra-fast feeding agent, and has simple components, and the vulcanized nitrile rubber product whose cross-linking bond is C-C bond can be obtained at room temperature by using the existing technology.

Description

technical field [0001] The invention relates to a vulcanized nitrile rubber composition used for oil-resistant rubber products and a preparation method thereof, in particular to a vulcanized nitrile rubber composition obtained by vulcanizing the nitrile rubber at room temperature and a preparation method thereof. Background technique [0002] Hu Shaozhi et al. mentioned a room temperature vulcanized nitrile rubber glue in "Natural Vulcanization Phenomenon of Butadiene Rubber", using sulfur and super speed accelerator dithiotetramethylthiuram, hexamethylenetetramine, etc. Carry out room temperature vulcanization of nitrile rubber glue, but this method does not mention the room temperature vulcanization of nitrile block solid block rubber, nor does it mention the use of ultra-high active peroxides for room temperature vulcanization, and the C-C type cannot be obtained using this method Cross-linked products. [0003] CN99117023.7 mentioned the method for producing rubber prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08K13/02C08K5/14C08K3/04C08K3/22C08K5/09C08J3/24
Inventor 吴宇杨珊珊樊洁李波赵洪国何连成胡海华宋中勤张群郑红兵
Owner PETROCHINA CO LTD