Bio-Based Epoxy Polymers, Blends, and Composites. Группа авторов

Bio-Based Epoxy Polymers, Blends, and Composites - Группа авторов


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the case of anhydride cross‐linking while decrease for polyamine‐cured materials. Moreover, the value of the loss factor decreases in the case of anhydride cross‐linking, but it is definitely higher for polyamine‐cured compositions. That kind of formation of dynamic mechanical properties results from a greater degree of cross‐linking of anhydride‐cured compositions. The epoxidized palm oil was prepolymerized in a reaction with isophorone diamine [37]. The resulting palm oil derivatives were used as modifiers of a bisphenol A‐based low molecular weight epoxy resin. The prepared compositions and the pure unmodified epoxy resin were cured with isophorone diamine. It was found that the palm oil derivatives led to a decrease in the mechanical strength of the resin, but on the other hand, they contributed to an increase in relative elongation at break and significant improvement (even twice) in impact strength of the cross‐linked products. A two‐phase structure of the compositions studied, responsible for the increase of their impact strength, was observed.

Chemical structure of the cycloaliphatic resin (3,4-epoxycyclohexylmethyl-3′,4′-epoxycyclohexane carboxylate). Chemical structure of Triarylsulfonium salts applied as the cationic photoinitiators. Chemical structure of vernolic acid methyl ester and product of its reaction with trimethylol propane. Chemical structure of norbornyl epoxidized linseed oil.
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