WERKWIJZE VOOR DE BEREIDING VAN VERKNOOPT POLYETHEEN EN VOORWERPEN, VERVAARDIGD ONDER TOEPASSING VAN HET ALDUS BEREIDE VERKNOOPTE POLYETHEEN.

摘要

A cross-linked olefin polymer is produced by applying high energy ionizing radiation to a mixture of the olefin polymer and a cross-link promoter such as trimethylolpropane triacrylate in an amount such that the mixture absorbs a radiation dose of between about 0.1 and about 1 megarad. The cross-link promoter serves to enhance the cross-linkability of the olefin polymer such that a high degree of cross-link is achieved with a small radiation dose. The mixture can also contain a foaming agent which can be made to expand and thereby produce a cellular product. Products fashioned of the cross-linked polymer have improved dimensional stability and are more resistant to thermal shrinkage and distortion. The cross-linked olefin polymer can be fashioned into a variety of products having utility in many fields including the packaging and construction industries.