Effect of cobalt on the electrical conductive property of epoxy resins

Abstract

Cobalt acrylate (CoA 2 ) has been treated with bisphenol-A and epichlorohydrin to modify epoxy resins. It was cured with p-acetylbenzilidene triphenyl arsonium ylide. The properties such as epoxide equivalent weight (equiv/100 g), molecular weight, hydrolyzable chlorine content increases whereas hydroxyl content, refractive index decreases in the presence of CoA 2 . The cured epoxy resins shows improve electrical conductivity due to the incorporation of CoA 2 with epoxy resins. The influence of complex formation of CoA 2 with either linkage of epoxy resins were investigated by spectroscopy. The decrease in T g from differential scanning calorimetry support the improve in flexibility. The dispersion of cobalt in epoxy resins matrix was confirmed by scanning electron microscope.

Preparation of an Electronic-Grade Cardol-Based Epoxy Reactive Diluent By Stepwise Dichlorination

“…To gain a high conversion rate, the temperature of the first and second reactions needs to be increased; however, in the first reaction, the high temperature will promote the β side reaction, whose chloride atoms cannot be removed in the closed-loop reaction, while in the second reaction, the high temperature will also increase the side reactions. The above problems also exist in the field of synthesizing other petroleum-based epoxy resins. , Many studies have been devoted to the synthesis of electronic-grade epoxy resins. Some researchers used the chlorine-free route: the epoxy resin was obtained by synthesizing a propylene ether polymer first and then epoxidating it with peracetic acid .…”

“…The above problems also exist in the field of synthesizing other petroleum-based epoxy resins. 31,32 Many studies have been devoted to the synthesis of electronic-grade epoxy resins. Some researchers used the chlorine-free route: the epoxy resin was obtained by synthesizing a propylene ether polymer first and then epoxidating it with peracetic acid.…”