Process for improving the insulating capacity of expanded vinyl aromatic polymers and the products thus obtained

摘要: Process for improving the insulating capacity of expanded vinyl aromatic which comprises: 1) preparing beads expandable polymers containing 1-10% by weight, calculated with respect to polymer, an expanding agent englobed in polymeric matrix, 0.001-25% polymer (a) , athermanous additive comprising carbon black homogeneously distributed matrix,- and 0-10%by graphite, and/or aluminum, antimonium trisulf ide inorganic derivative silicon or magnesium; 2) treating surface beads, before deposition coating, a liquid lubricating agent; 3) thermally hot air at temperature ranging from 30 60°C.