发明申请
US20110183144A1 VARNISH, PREPREG, AND SUBSTRATE THEREOF 失效
VARNISH,PREPREG及其基础

VARNISH, PREPREG, AND SUBSTRATE THEREOF
摘要:
A varnish includes an epoxy resin, a curing agent, an accelerator agent and fillers. The fillers include inorganic mineral powders. The inorganic mineral powders have composition of SiO2 in weight ratio of 55±5% and a composition of aluminum compound in weight above 35%. Glass fabric cloth is dipped into the varnish so as to form a prepreg with better machined-work capability.
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