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Amidated vulcanized carboxyl nitrile rubber and preparation method thereof

A technology of carboxylated nitrile rubber and carboxylated nitrile, which is applied in the field of amidation vulcanized carboxylated nitrile rubber and its preparation, and achieves the effects of moderate vulcanization speed, solving scorch and high reaction speed

Active Publication Date: 2020-01-14
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are no relevant reports on the method of vulcanizing carboxylated nitrile rubber and related compositions using amidation, but the vulcanization method of carboxylated nitrile rubber is mentioned in the existing literature

Method used

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  • Amidated vulcanized carboxyl nitrile rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Mix 100 parts of carboxylated nitrile rubber Zeon N632S, 50 parts of N330 carbon black, 3 parts of hexamethylenediamine, 2 parts of DCC, 1 part of DMAP, and 3 parts of 264 anti-aging agent using an open mixer for 20 minutes until uniform, and control the mixing process The temperature is 30-50°C. After the mixing is completed, the mixed rubber is placed at room temperature for 4 hours, and then vulcanized by a flat vulcanizing machine at a vulcanization temperature of 140°C and a vulcanization time of 40 minutes to obtain a product.

Embodiment 2

[0039] Take 100 parts of carboxylated nitrile rubber LANXESS X146, 100 parts of N330 carbon black, 5 parts of hexamethylenediamine, 5 parts of DCC, 3 parts of DMAP, and 3 parts of 264 anti-aging agent. During the process, the temperature is controlled at 30-50°C. After the mixing is completed, the mixed rubber is placed at room temperature for 8 hours, and then vulcanized by a flat vulcanizer at a vulcanization temperature of 150°C and a vulcanization time of 60 minutes. That is, a product is obtained.

Embodiment 3

[0041] Take 100 parts of carboxylated nitrile rubber LANXESS X146, 80 parts of N550 carbon black, 3 parts of hexamethylenediamine, 4 parts of DCC, 2 parts of DMAP, and 5 parts of 264 anti-aging agent. During the process, the temperature is controlled at 30-50°C. After the mixing is completed, the mixed rubber is placed at room temperature for 4 hours, and then vulcanized by a flat vulcanizer at a vulcanization temperature of 120°C and a vulcanization time of 35 minutes. That is, a product is obtained.

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Abstract

The invention discloses amidated vulcanized carboxyl nitrile rubber and a preparation method thereof. The preparation method comprises the following steps: sufficiently mixing crude carboxyl nitrile rubber with a reinforcing agent, an anti-aging agent, an amidation vulcanizing agent, an amidation dehydrant and an amidation accelerant according to common mixing conditions of nitrile rubber of the field; and performing vulcanization treatment on the mixed and smelted rubber material, so as to obtain carboxyl nitrile rubber, wherein polyamine is adopted to implement vulcanization on the crude carboxyl nitrile rubber, amino of the polyamine and carboxyl of the crude carboxyl nitrile rubber are reacted to form amido bonds, a cross-linking system is formed through the amido bonds finally, and thus vulcanization of the crude carboxyl nitrile rubber is completed. Compared with the prior art, the method disclosed by the invention provides a vulcanization mode different from the prior art, and is a unique vulcanization method based on a condensation reaction.

Description

technical field [0001] The present invention relates to a kind of amidation vulcanization carboxylated nitrile rubber and preparation method thereof, especially relate to a kind of carboxylated nitrile rubber vulcanization method, this method can carry out sulfur-free to carboxylated nitrile rubber by forming amide bond in carboxylated nitrile rubber vulcanization treatment. Background technique [0002] There is no relevant report on the method of vulcanizing carboxylated nitrile rubber and related compositions using amidation, but the vulcanization method of carboxylated nitrile rubber is mentioned in the existing literature. [0003] CN103724733A has mentioned a kind of preparation method of carboxylated nitrile rubber oil-resistant gloves, and what it used is vulcanizing agent to vulcanize, and vulcanizing agent comprises sulfur and peroxide. [0004] CN101173066 mentions a carboxylated nitrile rubber-based high-performance damping material and a preparation method ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L13/00C08K13/02C08K3/04C08K5/17C08K5/3432C08K3/22C08K5/29
CPCC08K13/02C08K3/04C08K5/17C08K5/3432C08K3/22C08K5/29C08K2003/2241C08L2201/08C08L13/00
Inventor 吴宇樊洁李波何连成赵洪国周雷胡海华宋中勤张群郑红兵
Owner PETROCHINA CO LTD
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