High-rigidity and toughness balance, anti-stress whitening and halogen-free flame retardant polypropylene composite material and preparation method thereof

Abstract

The invention discloses a high-rigidity and toughness balance, anti-stress whitening and halogen-free flame retardant polypropylene composite material and a preparation method thereof. The composite material consists of the following raw materials in parts by weight: 32-96 parts of polypropylene, 0-30 parts of talcum powder, 1-20 parts of cage-like polysilsesquioxane, 1-15 parts of elastomer, 0.1-1 part of an antioxidant and 0-2 parts of other aids. The high-rigidity and toughness balance, anti-stress whitening and halogen-free flame retardant polypropylene composite material and the preparation method thereof disclosed by the invention have the advantages that through introducing cage-like polysilsesquioxane nanometer particles in a traditional talcum powder reinforced polypropylene baseformula and compounding two different scale systems, the rigidity and the impact resistance of the polypropylene composite material can be significantly improved; meanwhile, the nano-sized cage polysilsesquioxane particles can act as nucleating agents, so that the crystallinity of the polypropylene composite material is improved; in addition, the better carbon formation effect of the cage-like polysilsesquioxane can improve the oxygen index of the polypropylene composite material and solve the problem of easy combustion of the polypropylene composite material, so that the polypropylene composite material can resist stress whitening while having high-rigidity and toughness balance property and is good in flame retardance.

Description

technical field [0001] The invention relates to a high stiffness-toughness balance, anti-stress whitening, halogen-free flame-retardant polypropylene composite material and a preparation method thereof, which is a polypropylene composite material with simple process, low cost and good comprehensive performance, and is mainly used in household appliances , automotive interior and exterior decoration, etc., which belong to the technical field of polymer modification and processing. Background technique [0002] Polypropylene is widely used in industries such as automotive interior and exterior decoration, household appliances and electronics because of its good processing performance, excellent mechanical, physical and chemical properties, and light weight and low price. It is currently the fastest growing general-purpose thermoplastic . In recent years, with the rapid development of the automobile industry, major automobile OEMs have put forward higher requirements for the p...

AI Technical Summary

Problems solved by technology

[0005] In order to improve the balance of rigidity and toughness of the polypropylene composite material, improve the stress whitening resistance of the composite material, and solve the problem of poor flame retardancy of the material, the technical solution of the present invention is to add Cage-shaped polysilsesquioxane, in the extrusion blending process, can significantly improve the rigidity and impact resistance of polypropylene materials through the compounding of two different scale systems, while nano-scale cage-shaped polysilsesquioxane Oxygen particles can act as a nucleating agent to improve the crystallinity of polypropylene composites; in addition, the better carbon-forming effect of cage polysilsesquioxane can improve the oxygen index of polypropylene composites and achieve the purpose of inhibiting the burning characteristics

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