Properties of impregnation resin added to multifunctional epoxy at cryogenic temperature

被引：21

作者：

Chen, QA ^{[1
]}

Gao, BJ ^{[1
]}

Chen, JL ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2003年 / 89卷 / 05期

关键词：

multifunctional epoxy; viscosity; FTIR; resins;

D O I：

10.1002/app.12431

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A multifunctional epoxy tetraglycidyl dibenz-methyldiamine and triglycidyl benzylamine were blended, respectively, into impregnation resin, which mainly consists of diglycidyl ether of bisphenol A (DGEBA) and acid anhydride hardener. This resin is expected to impregnate HT-7U superconducting Tokamak toroidal field coils and improve the fracture toughness of DGEBA-acid anhydride resin at cryogenic temperature. However, the experimental results reveal that resin lap shear strengths decrease remarkably both at ambient and liquid nitrogen temperatures. After blending multifunctional epoxy for several hours, its viscosity increased quickly at room temperature. The usable potting life is too short to impregnate large coils such as those used in fusion reaction. By FTIR the possible reason was investigated. (C) 2003 Wiley Periodicals, Inc.

引用

页码：1385 / 1389

页数：5