Modified polypropylene material, preparation method and application thereof

Abstract

The invention discloses a modified polypropylene material, a preparation method and application thereof. The modified polypropylene material comprises the following components in parts by weight: a, 20-80 parts of a polypropylene resin, b, 1-20 parts of a compatilizer, and c, 10-40 parts of reinforcing fibers, wherein the reinforcing fibers comprise a component I, a component II and a component III, the component I consists of reinforced fibers with the length of less than 0.1 mm and accounts for 10-20% of the reinforing fibers, the component II is composed of reinforced fibers with the length of 0.1 mm-0. 3mm and accounts for 50-75% of the number of the reinforcing fibers, and the component III is composed of reinforced fibers with the length of 0.4 mm-0. 8mm, and accounts for 5-40% of the number of the reinforcing fibers. According to the invention, by controlling the length and content distribution of the reinforcing fibers in the modified polypropylene material, compared with a glass fiber material with a conventional length (0.4-0.6 mm), the surface gloss is high, and floating fibers are few; elongation at break is large, toughness is good, and tests such as ball falling are facilitated; and the melt elongation rate is high, and the modified polypropylene material is mainly suitable for blow molding, plastic suction and other occasions.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a modified polypropylene material and its preparation method and application. Background technique [0002] Polypropylene material is currently the most used polymer material. It has excellent processing properties and mechanical properties. It is widely used in daily life and industrial production fields, such as: agricultural film, wire and cable, communication, housing construction and aviation manufacturing. Wait. [0003] At present, the polyolefin materials suitable for blow molding and blister use are basically pure HDPE or PP resins. These resins can be molded well, but they still need to be improved in terms of heat resistance and strength. In the industry, the high strength and high rigidity of glass fibers are usually used to improve product strength and heat resistance, but conventional glass fiber reinforced polypropylene materials have low melt strengt...

AI Technical Summary

Problems solved by technology

[0003] At present, the polyolefin materials suitable for blow molding and blister use are basically pure HDPE or PP resins. These resins can be molded well, but they still need to be improved in terms of heat resistance and strength.

In the industry, the high strength and high rigidity of glass fibers are usually used to improve product strength and heat resistance, but conventional glass fiber reinforced polypropylene materials have low melt strength, low melt elongation, surface floating fibers and poor toughness And other issues

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