Adhesion-modified polyolefin composition was foamed and isolated parts of the vehicle, containing expanded adhesion-modified polyolefin composition

摘要

1. A method comprising: 1) introduction of solid, thermally foamable polyolefin composition into a cavity! 2) heating the thermally foamable polyolefin composition in the cavity to a temperature sufficient to foam and crosslink the polyolefin composition and! 3) allowing the polyolefin composition to foam freely to obtain a foam that fills at least a portion of the cavity, wherein the steps 2) and 3) are carried out in such a manner that the thermally foamable composition is not exposed to pressure action, above atmospheric, or other physical effects at least in one direction when it is heated to a temperature sufficient to initiate crosslinking and activate the blowing agent and cross-linking occurs simultaneously with Sun penivaniem, and wherein the thermally foamable polyolefin composition comprises! a) from 35 to 65% by weight of the composition (1) able to undergo crosslinking an ethylene homopolymer, (2) capable of undergoing crosslinking copolymer of ethylene and at least one C 3-20 α-olefin or non-conjugated diene or triene comonomer, ( 3) the ability to undergo cross-linking an ethylene homopolymer or a copolymer of ethylene and at least one c 3-20 α-olefin containing hydrolyzable silane groups or (4) mixtures of two or more of the above homopolymer, copolymer or mixture with a melt index of from 0 5 to 30 g / 10 m n when it is measured in accordance with ASTM D 1238 under the conditions of test temperature 190 ° C / the mass of the nominal load of 2.16 kg; ! b) from 0.5 to 8% by weight of a heat activated crosslinker composition Agen