| 摘要 |
The invention relates to a method for producing a cross-linked PVC rigid-foa m body from a starting mixture containing PVC, an isocyanate or polyisocyanate , an organic anhydride and a chemical expanding agent by: converting the starting mixture into a molded article inside a compacting device under the action of pressure and heat; removing the article from the mold, and; expanding and hardening the obtained molded article in an expanding device while supplying heat and water and/or water vapor whereby forming a cross- linked PVC foam body. The invention is characterized in that the starting mixture contains epoxidized compounds in amounts greater than 3 % by weight, preferably greater than 5 % by weight, and less than 15 % by weight with regard to the starting mixture. |
