STRESS-RELAXATION STUDIES OF A MODEL FOR UNFILLED, ANIONICALLY STABILIZED, CURABLE SILICONE LATEXES

被引：5
|
作者：
STEIN, J
LEONARD, TM
机构：
[1] General Electric Company, Corporate Research and Development, Schenectady
来源：
POLYMER DEGRADATION AND STABILITY | 1990年 / 28卷 / 03期
关键词：
Chemical Stress Relaxation - Cured Silicone Network - Filler Loading - Physical Stress Relaxation - Relaxation Rate - Stress Relaxation Behavior;
D O I：
10.1016/0141-3910(90)90070-N
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Stress relaxation behavior of a model for an unfilled, anionically stabilized silicone latex has been used to examine the chemistry of the cured silicone network. It has been shown that the cure catalyst produces siloxane bond interchange reactions which cause chemical stress relaxation. The relaxation rate is accelerated in the presence of water due to a second interchange reaction presumably involving silanols. The measurement of the rate of stress relaxation at various temperatures gave an apparent activation energy of 7·6 kcal/mol for the relaxation process in the presence of water. © 1990.
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页码：311 / 322
页数：12
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