Wear-proof vibration-resistant polypropylene composite material for inner drum of washing machine and preparation method of wear-proof vibration-resistant polypropylene composite material

Abstract

The invention discloses a wear-proof vibration-resistant polypropylene composite material for an inner drum of a washing machine and a preparation method of the wear-proof vibration-resistant polypropylene composite material. The composite material is prepared from, by weight, 90-110 parts of polypropylene, 20-30 parts of acrylic acid, 3-5 parts of lauroyl peroxide, 8-10 parts of dimethyl benzene, 40-50 parts of acetone, 20-25 parts of PFA (polyfluoroalkoxy) resin, 5-7 parts of trioctylcitrate, 7-9 parts of tricresyl phosphate, 4-6 parts of N-hydroxymethyl stearamide, 5-7 parts of zinc stearate, 2-4 parts of dibasic lead stearate, 6-8 parts of Fischer-Tropsch wax, 8-10 parts of epoxy flax oil, 15-20 parts of nano calcium carbonate, 10-12 parts of hollow glass beads and the like. The added PFA resin contains active groups which can react with polypropylene resin to form a network structure and increase part of flexible chains, and accordingly impact resistance of the polypropylene composite material is improved. By adoption of graft modified polypropylene such as the acrylic acid, compatibility of inorganic filler such as boron carbide to organic resin can be improved, and abrasion resistance of the composite material is improved. Due to addition of inorganic filler such as the hollow glass beads and graphene aerogel, vibration resistance of the composite material is enhanced.

Description

technical field [0001] The invention relates to a composite material, in particular to a wear-resistant and anti-vibration polypropylene composite material for an inner barrel of a washing machine and a preparation method thereof. Background technique [0002] Polypropylene has outstanding advantages such as low density, good mechanical balance, chemical corrosion resistance, easy processing, high heat distortion temperature and low price, and has developed rapidly. Its biggest disadvantage is poor willfulness. The development of copolymerization technology, especially the advent of copolymerized polypropylene resin, has expanded the application field of polypropylene, and is widely used in washing machines and other household appliances to make various components. However, polypropylene material has poor wear resistance and impact resistance, so it needs to be modified when it is used in the inner drum of the washing machine. The traditional modification method is to tough...

AI Technical Summary

Problems solved by technology

[0002] Polypropylene has outstanding advantages such as low density, good mechanical balance, chemical corrosion resistance, easy processing, high heat distortion temperature and low price, and has developed rapidly. Its biggest disadvantage is poor willfulness. The development of copolymerization technology, especially the advent of copolymerized polypropylene resin, has expanded the application field of polypropylene, and is widely used in washing machines and other household appliances to make various parts

However, polypropylene material has poor wear resistance and impact resistance, so it needs to be modified when it is used in the inner drum of the washing machine

The traditional modification method is to toughen polypropylene with elastomers, such as ethylene propylene rubber, POE, SBS, etc. The technology is relatively mature, but the main disadvantage is that the flow properties of the material are not good, and the rigidity and strength also decrease.