| 摘要 |
Improved foamable polymer compositions of polyvinyl chloride or copolymers containing vinyl chloride, with little or no plasticizer, are described. The foamable polymer compositions contain polyvinyl chloride, or a vinylchloride-copolymer, a chemical blowing agent, and a high molecular weight polyethylene. The compositions may also contain stabilizers, lubricants, additives to improve impact strength, etc. Rigid low density foam products are made from these compositions. |
