Preparation method of free radical type flame-retardant modified polypropylene

Abstract

The invention discloses a preparation method of free radical type flame-retardant modified polypropylene. The preparation method comprises the following steps: preparing raw materials, preparing triethyl aluminum, titanium tetrachloride, propylene, polyphenylene sulfide, polyethylene wax, glass fibers, modified rubber, an antistatic agent, an antioxidant, talcum powder and the like in proportion, and sequentially processing according to procedures to finally obtain the flame-retardant modified polypropylene. The obtained flame-retardant modified polypropylene has tensile strength, bending strength, impact resistance, chemical resistance and high glossiness, has an anti-static effect, can delay or inhibit the oxidation process of the polypropylene, is low in raw material cost, and is beneficial to production and processing.

Description

technical field [0001] The invention belongs to the technical field of polypropylene materials, and in particular relates to a preparation method of free radical flame-retardant modified polypropylene. Background technique [0002] Polypropylene is a thermoplastic resin obtained by the polymerization of propylene. According to the position of the methyl group, it can be divided into three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene; the methyl groups are arranged on the same side of the main chain of the molecule. It is called isotactic polypropylene, the methyl group is randomly arranged on both sides of the molecular main chain, it is called atactic polypropylene, and the methyl group is alternately arranged on both sides of the molecular main chain, it is called syndiotactic polypropylene. The production process of propylene is complex and costly, which is not conducive to processing and production. At the same time, the tensile st...

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Problems solved by technology

[0002] Polypropylene is a thermoplastic resin obtained by the polymerization of propylene. According to the position of the methyl group, it can be divided into three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene; the methyl groups are arranged on the same side of the main chain of the molecule. It is called isotactic polypropylene, the methyl group is randomly arranged on both sides of the molecular main chain, it is called atactic polypropylene, and the methyl group is alternately arranged on both sides of the molecular main chain, it is called syndiotactic polypropylene. The production process of propylene is complex and costly, which is not conducive to processing and production. At the same time, the tensile strength and impact resistance of traditional polypropylene are low, which is not conducive to users; in addition, traditional polypropylene does not have flame retardancy and heat resistance, which is extremely Flammable and extremely hazardous, traditional polypropylene does not have chemical resistance and low gloss