The invention discloses a high temperature and high humidity resistant halogen-free flame-retardant polyether polyurethane elastomer which comprises the following components in parts by mass: 45-65 parts of a polyether polyurethane elastomer, 10-20 parts of a polyolefin plastomer, 5-10 parts of a compatilizer, 0.2-1 part of a cross-linking agent and 20-30 parts of a phosphorus-nitrogen flame retardant. POP (P-Octyl Phenol) of a low crystallinity degree and the polyurethane elastomer are commixed, under the condition that the raw materials are easy to obtain, the adsorption capability of the surface of a polymer with water molecules is reduced, and together with a chemical reaction grafting technique, the thermal resistance stability is improved while the compatibility is taken into account; meanwhile, due to adoption of the cross-linking agent, components are subjected to a cross-linking reaction, then the temperature resistance and thermal resistance of a finished product are improved, and the elastomer is qualified in testing of di85 for 1000 hours.

Tang Wei

Papers

High temperature and high humidity resistant halogen-free flame-retardant polyether polyurethane elastomer and preparation method thereof