Material flexible insulating self-curing with excellent heat resistance and flame

Thermal insulation material and / or acoustic comprising at least one layer of a mixture of organic polymers expanded and cured, wherein the polymer has heteroatoms in the polymer backbone and / or side groups or reactive sites and the polymer mixture comprising at least one filler forming stable bonds and / or supporting crosslinking reactions at temperatures above 280 ° C, and at least one crosslinking leading to subsequent crosslinking during a heat load (permanent at temperatures above 280 ° exposure), the crosslinking chemically active at a temperature higher than 280 ° C, leading to the subsequent crosslinking.