Modified polypropylene composite material and preparation method thereof

Abstract

The invention relates to a modified polypropylene composite material and a preparation method thereof. The modified polypropylene composite material is prepared from the following ingredients in parts by mass: 50 to 80 parts of polypropylene, 5 to 20 parts of graphene powder, 8 to 20 parts of glass fiber, 1 to 2.2 parts of organic complexes, 0.4 to 7.4 parts of unsaturated carboxylic acid and polypropylene graft solvents, 0.6 to 1.6 parts of maleic anhydride solvents, 1 to 1.8 parts of stannate ester and 1 to 4 parts of phosphite ester. According to the preparation method of the modified polypropylene composite materia, the graphene powder and the glass fiber are subjected to surface treatment; then, the polypropylene, the unsaturated carboxylic acid and polypropylene graft solvents, the phosphite ester and the surface treated graphene powder are subjected to high-speed mixing to form a graphite / PP mixed material; then, the graphite / PP mixed material and the dried glass fiber are extruded to obtain the graphene modified enhanced PP particles; drying is performed; the graphene modified enhanced PP particles are subjected to extrusion, material melting, pressing and processing forming. The modified polypropylene composite material has the advantages that the heat-resistant and pressure-resistant performance of a plate material is excellent.

Description

technical field [0001] The invention relates to the field of polypropylene composite material manufacturing, in particular to a high-temperature-resistant, pressure-resistant and corrosion-resistant polypropylene composite material that can be widely used in chemical industry, environmental protection, metallurgy and other industries and a preparation method thereof. Background technique [0002] Now commonly used filter press plate materials are composed of polypropylene and its calcium carbonate, talcum powder or glass fiber, etc., which are obviously not adaptable to high temperature and solid-liquid separation with strong chemical corrosion resistance in the chemical industry and other industries. Disadvantages such as high cost and short service life. In response to this situation, the country began to study new polypropylene composite materials as filter press plate materials. Compared with other mineral-based materials, graphene materials have excellent heat resistanc...

AI Technical Summary

Problems solved by technology

At present, there have been some research, development and patent literature reports on graphite-modified polypropylene materials. As a new material research and exploration and new product development, graphite-modified polypropylene tubular reactors have been successfully used to replace glass-lined reactors. , and research and development of graphite-modified polypropylene as chemical reaction trays, heat exchangers, radiators, etc., but only graphite is used as a modifier in these materials to improve the heat transfer and electrical conductivity of polypropylene. The strength and other properties of the filter plate material are obviously low, and the research and application of new graphene-modified reinforced polypropylene materials required for the filter press plate is still blank, resulting in the current polypropylene material in heat resistance, resistance Corrosion and high pressure resistance have high requirements, and its performance is obviously insufficient in the separation of waste liquid or raw material solid hydraulic filtration, which affects its application range. At the same time, its service life is short and the cost is also greatly increased.