Vulcanization Kinetic Study of Different Nitrile Rubber (NBR) Compounds

被引：6

作者：

Gabriel, Cleverson F. S. ^{[1
]}

Linhares, Felipe N. ^{[1
]}

de Sousa, Ana Maria F. ^{[1
]}

Furtado, Cristina R. G. ^{[1
]}

Peres, Augusto C. C. ^{[2
]}

机构：

[1] Univ Estado Rio de Janeiro, Inst Quim, Dept Proc Quim, BR-20559900 Rio De Janeiro, RJ, Brazil

[2] Petroleo Brasileiro SA, Ctr Pesquisas & Desenvolvimento Leopoldo Amer Mig, BR-21941915 Rio De Janeiro, RJ, Brazil

来源：

MACROMOLECULAR SYMPOSIA | 2014年 / 344卷 / 01期

关键词：

activation energy; crosslinking; cure rate constant; nitrile rubber; vulcanization;

D O I：

10.1002/masy.201300209

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The vulcanization process of rubber compounds comprises multiple chemical reactions and the investigation of this process can be carried out using several techniques. This paper aims at investigating the influence of acrylonitrile content (28, 33 and 45%) and the presence of a carboxyl group in the vulcanization process of nitrile rubber. A methodology that uses rheometric parameters to determinate the cure rate constant (k) and activation energy (E) was conducted. The results showed that there was a decrease in cure rate constant with increasing of acrylonitrile content in the rubber, for a given vulcanization temperature. Furthermore, a higher value of activation energy was obtained for the 33% of acrylonitrile compound.

引用

页码：22 / 27

页数：6

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