| 摘要 |
An improved process for the production of cross-linked polyolefin foams by mixing polyolefins with conventional foaming agents and cross-linking agents known for polyolefin foam production, shaping the mixture into a plate or into a continuous sheet, substantially without cross-linking and foaming, the improvement comprises mixing said mixture with up to 50% by weight of an alpha , beta -unsaturated polyester, heating the plate or sheet optionally by IR radiation, and cross-linking the foaming by dielectric heating at a temperature above the decomposition temperature of the cross-linking and foaming agents. |
