| 摘要 |
<p>Extinguishing material evolving gases, which move a mobile part of the switch, contains (a) 10-25 wt.% w.r.t. total compsn. of an epoxy resin being a reaction prod. of pref. 3,4-epoxy-6-methylcyclohexylmethyl-3,4-epoxy-6-methyl-cyclohexane carboxylate or 3,4-epoxy-cyclohexylmethyl-3,4-epoxycyclohexane carboxylate with a dicarboxyl anhydride (b) 30-65 wt.% of melamine (c) 10-35 wt.% of an anhydride hardeners, (d) 0-50 wt.% of a flexibiliser, pref. a diglycidyl ether of a glycol, and (e) 0-1 wt.% of a curing catalyst, pref. a tert. amine. The working characteristics of this material are good and the service life is long.</p> |
