超细全硫化羧基丁腈粉末橡胶增韧环氧树脂研究进展  

Research progress of epoxy resin toughened by ultrafine carboxylic nitrile butadiene full-vulcanized powdered rubber

作　　者：戚桂村[1] 李秉海[1] 茹越[1] 王湘[1] 姜超 张晓红[1] Qi Guicun;Li Binghai;Ru Yue;Wang Xiang;Jiang Chao;Zhang Xiaohong(Sinopec Beijing Research Institute of Chemical Industry,Beijing 100013,China)

机构地区：[1]中国石化北京化工研究院,北京100013

出　　处：《石油化工》2022年第4期485-491,共7页Petrochemical Technology

基　　金：中国石油化工股份有限公司资助项目(420043)。

摘　　要：超细全硫化羧基丁腈粉末橡胶(VP-501)是通过辐射交联和喷雾干燥技术制备的一种由粒径约90 nm的初级橡胶粒子聚集而成的次级粒子。在强剪切作用下,VP-501能在环氧树脂中以初级橡胶粒子形式均匀分散,并通过表面羧基和腈基与环氧基的反应提高了橡胶相与环氧树脂基体间的相互作用,使改性环氧树脂的韧性和耐热性同时提高。介绍了VP-501在环氧树脂中的分散能力,综述了它对不同环氧树脂固化体系韧性和耐热性的影响,并对改性机理进行了探讨,最后对改性环氧树脂今后的研究方向提出了展望。Carboxylic nitrile butadiene ultrafine full-vulcanized powdered rubber(VP-501)is prepared by radiation crosslinking and spray drying technology,which is composed of primary rubber particles with a particle size of about 90 nm.Under strong shear,VP-501 can be dispersed homogeneously in epoxy resin in the form of primary rubber particles.The carboxyl and nitrile groups on the surface of rubber particles can react with epoxy group to improve the interaction between rubber phase and epoxy resin matrix,which simultaneously improves the toughness and heat resistance of the modified epoxy resin.The dispersion ability of VP-501 in epoxy resin is introduced,its influence on the toughness and heat resistance of different curing systems is summarized,the modification mechanism is discussed,and finally the future research direction of modified epoxy resin is prospected.

关 键 词：橡塑共混 环氧树脂 超细全硫化羧基丁腈粉末橡胶 增韧改性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]