Fire retardant polypropylene

摘要

A fire retardant material comprising preferably at least 60% polypropylene having a flexural modulus of 2.8 GPa or above and a fire retardancy rating of UL-94 V-1 or better. The fire retardant material is preferably halogen and glass-fiber free. It may contain a fire retardant agent (e.g. a polymeric APP-crystal phase II type fire retardant fire retardant) and a filler. Also methods for producing such a fire retardant material.

主权项

1. A fire retardant material, consisting essentially of about 60-80% wt of polypropylene, about 10-35% wt of an ammonium polyphosphate fire retardant agent, and about 5-20% wt of a filler, wherein the fire retardant material has a flexural modulus greater than 2 GPa and a fire retardancy rating of UL-94 V-1 or better, wherein the filler is talc exfoliated in the polypropylene and fire retardant blend.