Thermosetting mechanism of poly[(phenylsilylene)ethynylene-1,3-phenyleneethynylene]

被引：5

作者：

Kuroki, S ^{[1
]}

Kakigano, T ^{[1
]}

Ishikawa, J ^{[1
]}

Itoh, M ^{[1
]}

Okita, K ^{[1
]}

机构：

[1] MITSUI TOATSU CHEM CO LTD,CENT RES LAB,SAKAE KU,YOKOHAMA,KANAGAWA 247,JAPAN

来源：

KOBUNSHI RONBUNSHU | 1997年 / 54卷 / 04期

关键词：

poly[(phenylsilylene)ethynylene-1,3-phenyleneethynylene; solid-state nuclear magnetic resonance methods; chemical calculations; Diels-Alder reaction; hydrosilylation reaction; intermolecular cross-linking; highly thermally stable structure;

D O I：

10.1295/koron.54.229

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly[(phenylsilylene)ethynylene-1,3-phenyleneethynylene] (MSP) which contains Si-H and C=C bonds gives a very highly thermally stable polymer by curation above 150 degrees C. In this study, we determined thermosetting mechanism of MSP from the C-13 and Si-29 solid-state NMR methods and chemical calculations. From these results, we concluded that the intermolecular cross-linking reactions owing to 1) the Diels-Alder reaction between Ph-C=C and C=C and 2) the hydrosilylation reaction between Si-H and C=C proceeded at 150 similar to 200 degrees C. A very highly thermally stable structure is formed. Only the hydrosilylation reaction occurs above 300 degrees C.

引用

页码：229 / 235

页数：7

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