Effect of solid particle loading on nucleophilic addition of epoxy-resin to isophorone diisocyanate

作     者：Wei Zhang Richard S. Blackburn Abbas A. Dehghani-Sanij 

作者机构：Green Chemistry Group Centre for Technical Textiles University of Leeds Leeds LS2 9JT UK School of Mechanical Engineering University of Leeds Leeds LS2 9JT UK 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2008年第6卷第1期

页      面：24-29页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：University of Leeds 

主　　题：Particle loading Cracks Nucleophilic Addition FT-IR 

摘      要：In the preparation of surface coatings made of conductive composites consisting of conductive particulate fillers in a soft matrix, cracks will develop with increase of the particulate loading, which is believed to be related to the nucleophilic addition reaction between glycidyl end-capped poly （bisphenol A-co-epichlorohydrin） and isophorone diisocyanate molecules. This curing reaction is responsible for the generation of crosslinking network throughout the coatings. The influence of solid particle loading on the chemical reaction may be described as a volume-excluded effect, that is, the high solid particle loading will occupy the space between the functional groups thus preventing the chemical reaction to take place. As a direct consequence, the cross-linking network cannot develop properly due to the insufficiency of curing reaction. This will lead to the generation of cracks, as was supported by FT-IR analysis in this work.