FLAME RETARDANT MODIFIED POLYPROPYLENE COMPOSITE IMPROVED BY CERAMIC FIBRE AND PREPARATION PROCESS THEREOF

摘要

Disclosed in the present invention are a flame retardant modified polypropylene composite improved by ceramic fibre and a preparation process thereof; the composite is composed by weight thus: 60 - 75 parts of a polypropylene resin, 15 - 30 parts of ceramic fibre, 5 - 10 parts of a fire retardant; and 3 - 10 parts of a processing aid. The flame retardant modified polypropylene composite improved by ceramic fibre provided by the present invention has good flame retardance, properties of high heat resistancy, high surface hardness, and at the same time has high internal surface rigidity etc., and has a flame retardant rating up to UL94 V-O and is able to meet the operating requirements for shells and the internal structure components of electrical articles. The process for preparing flame retardant improved polypropylene composite containing ceramic fibre of the present invention uses a twin-screw extrusion device, and has advantages such as a simple procedure, continuity, high production efficiency, and a stable product quality.