High-strength high-toughness flame-retardant polypropylene composite material and preparation method thereof

Abstract

The invention discloses a high-strength high-toughness flame-retardant polypropylene composite material which is characterized by being prepared from the following components in parts by weight: 40-60 parts of polypropylene, 15-25 parts of hyperbranched polypropylene, 10-20 parts of hydroxyl-containing polypropylene, 8 to 12 parts of isocyanoethyl methacrylate/3-(1,1-difluoroallyl)quinoxalin-2-ol/allyltriphenylphosphonium bromide/isopropenylboronic acid pinacol ester copolymer, 0.8 to 1.2 parts of catalyst, 6 to 10 parts of nano boron fiber, 0.1 to 0.5 part of an antioxidant, 1 to 3 parts of a coupling agent, 2 to 5 parts of a compatilizer, 1 to 3 parts of an environment-friendly plasticizer, 0.8 to 1.3 parts of an initiator, 2 to 4 parts of sodium 3-mercapto-1-propanesulfonate and 2 to 5 parts of thermoplastic elastomer SBS. The invention also discloses a preparation method of the high-strength high-toughness flame-retardant polypropylene composite material. The high-strength high-toughness flame-retardant polypropylene composite material disclosed by the invention is high in strength, sufficient in toughness, good in flame retardance, good in ageing resistance and performance stability and long in service lifetime.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a high-strength and high-toughness flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) resin is a thermoplastic material obtained by polymerizing propylene. It has excellent comprehensive performance and relatively low price. It is widely used in home appliances, automobiles, electrical and electronics and other fields. However, the existing polypropylene materials generally have the defects of poor flame retardancy, strength and toughness to be further improved. It is in this situation that polypropylene composite materials came into being. [0003] Polypropylene composite materials are made by compounding polypropylene resin with other fillers and functional additives by means of blending and filling. This type of material can effectively improve the flame retardancy, strength and toug...

AI Technical Summary

Problems solved by technology

However, the compatibility between the organic fiber material and polypropylene needs to be further improved, and the addition of the flame retardant used makes the material poor in environmental protection.