| 摘要 |
<p>A novel, electrical insulation grade, concrete-contg. polymer is prepd. by (i) contacting a crushed electrical insulation grade porcelain aggregate with a silane, (ii) combining the silane-treated aggregate with a resin, and (iii) curing the resulting mixture. Prep. the silane is of formula R1Si(OR)3 (where R is alkyl or alkoxyalkyl and R1 is alkyl, alkylene or amino-, epoxy- or mercapto-substd. alkyl), and is esp beta-(3,4-epoxycyclohexyl)ethyl trimethoxy silane. The silane is pref. used in an amt. 0.05-2.0 wt. % based on the aggregate. The resin is pref. a hydantoin epoxy resin contg. curing agent and catalyst and is pref. used in amt. 10-20 wt. % of the combined resin and aggregate. Moisture absorption by the polymer concrete under high humidity conditions is greatly reduced by treating the concrete aggregate with the silane. The product is for indoor and outdoor use on electrical powder sytems.</p> |
