THERMO-INSULATING EXPANDED ARTICLES AND COMPOSITIONS FOR THE PREPARATION THEREOF

摘要

Thermo-insulating expanded articles having a density ranging from 5 to 50 g/l, which can be obtained from particle compositions of expandable vinyl aromatic polymers comprising: a. 10-90% by weight of beads/granules of expandable vinyl aromatic polymer pigmented with an athermanous material comprising from 0.05 to 25% by weight of coke in particle form with an average particle diameter (size) ranging from 0.5 to 100 μm; b. 90-10% by weight of beads/granules of essentially white expandable vinyl aromatic polymer.