| 摘要 |
Polyvinyl foam compn. is prepd. from polyvinyl resin, inorg. filler, radical initiater, and foaming agent. Polyvinyl foam compn. comprises at least one of polyvinyl resins; inorg. filler 2-100 parts per polyvinyl resin 1 part in weight ratio, radical scavenger at least 0.05 part per polyvinyl resin 1 part in weight ratio; and foaming agent. The compn. produces nonflammable and rigid foam of low density. |
