Curable and foamable polyolefinic resin composition, cured foam of polyolefinic resin and method for producing it

摘要

A polyolefinic resin is combined with a (meth)acrylic polyfunctional monomer in a generally central region of its chemical formula, having an aromatic ring, an alicyclic ring or a heterocyclic ring and a pyrolyzable chemical foaming agent to give a curable and foamable polyolefinic resin composition. The composition is shaped into a sheet, then cured and foamed into a sheet foam. The cured foam of polyolefinic resin is curable to a degree of curing of from 10 to 70 %, to give a foam having good heat resistance, good workability and shapability , and good pressure resistance.