摘要 |
<p>Novel polysilazane-modified polyamine hardeners for epoxy resins, such classes as glycidyl ether epoxy resins and novolac epoxy resins, including reaction mixtures, compositions and reaction products comprising such hardeners, impart enhanced high temperature properties, higher char yields and better adhesion properties to the cured epoxy resins relative to the same epoxy resins cured using unmodified polyamine hardeners.</p> |