Constituent for fire-resistant resin foaming body, production manner null of fire-resistant resin foaming body and fire-resistant resin foaming

摘要

PURPOSE:To obtain the title composition useful for building materials, having low smoking, hardly evolving harmful substances to cause an environmental pollution in combustion, having excellent heat insulating properties and soundproofing properties, comprising a specific flame-retardant and a specific low-density PE-based resin in a specific ratio. CONSTITUTION:The objective composition comprising (A) a halogenated phosphorus-containing compound-based flame-retardant containing 50-85wt.% phosphorus and halogen, having 150-250 deg.C melting point and 0.2-50mum particle diameter and (B) a low-density PE resin having 0.910-0.930g/cm3 density and 0.5-50g/10 minutes melt flow rate in a weight ratio of the component A/B of 0.05-0.45. The composition is molded, heated and crosslinked and foamed to give flame-retardant resin foamed body.