FEATURES OF THERMAL TRANSFORMATIONS OF 3-DIMENSIONAL POLYMETHYLSILSESQUIOXANE

被引：0

作者：

KIREEV, VV

DYACHENKO, BI

RYBALKO, VP

VEDYAKIN, SV

LYCHKOVSKAYA, OV

TSVETAEVA, NM

BRIND, AV

机构：

来源：

VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A | 1991年 / 33卷 / 05期

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D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermal transformations of network polymethylsilsesquioxane (PMSSO) have been studied by the isothermal TGA and IR-spectroscopy methods in the 197-465-degrees temperature range. In this range the condensation of residual SiOH groups formally obeied the regularities of a second-order reaction with the activation energy being equal to 34 kJ/mol and the rearrangement of cyclic siloxane fragments resulting in increase of the relative fraction of cycles of the grater size proceed.

引用

页码：997 / 1003

页数：7

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