Abstract

The most important indicators among the set of properties of epoxy adhesives are their heat resistance and preservation of the level of the properties of adhesion characteristics at elevated temperatures. The possibility of affecting these indicators by varying (replacing) functional heterocyclic groups in derivatives of benzimidazoles during the preparation of epoxy adhesive compositions is considered. It is shown that replacing an oxirane cycle by a thiirane cycle provides an increase in the glass transition point by 45–52°C and preservation of a high level of adhesion strength at 150°C which is 3- to 3.5-fold higher than in the diglycidyl analogue.

中文翻译：

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杂环单体结构对环氧胶粘剂耐热性的影响

摘要

环氧粘合剂的一系列性能中最重要的指标是它们的耐热性和在高温下保持粘合特性的性能水平。考虑了在环氧粘合剂组合物的制备过程中通过改变(替换)苯并咪唑衍生物中的官能杂环基团影响这些指标的可能性。结果表明，用硫杂丙环循环代替环氧乙烷循环可将玻璃化转变点提高 45-52°C，并在 150°C 下保持高水平的粘合强度，比现有技术高 3 至 3.5 倍。二缩水甘油类似物。