Preparation of Flame Retardant Thermoplastic Polyurethane Elastomer

Qingdao University of Science and Technology invented and designed a flame-retardant thermoplastic polyurethane elastomer and its preparation method. The intumescent flame-retardant polypropylene and thermoplastic polyurethane elastomer composite material prepared by using a composite intumescent flame retardant was invented, and its vertical combustion test level was improved to V-0 level, and a dense intumescent carbon layer was formed on the surface of the sample, which has good flame retardant burning effect. The use of hollow glass microspheres and intumescent flame retardants to synergistically flame-retardant polypropylene and thermoplastic polyurethane elastomers not only greatly improves the oxygen index of the composite material, but also significantly improves the vertical combustion performance reflecting the droplet resistance, which can be very good It reduces the heat release rate and has a significant smoke suppression effect. It can also significantly reduce the viscosity of the polymer melt and improve the processing performance.