Polypropylene composition for folding stool and preparation method thereof

Abstract

The invention discloses a polypropylene composition for folding stool and a preparation method thereof. The material formula of the polypropylene composition for folding stool is composed of 30-50 parts of co-polypropylene, 30-50 parts of co-polypropylene reworked material, 10-30 parts of calcium carbonate, 5-10 parts of toughener, 0.1-0.5 parts of antioxidant 1010, 0.1-0.5 parts of antioxidant 168, 0.3-0.5 parts of anti-ultraviolet ray agent UV-531, 0.08-0.1 parts of diffusing powder EBS, 0-0.04 parts of 3130 everlasting red F2R, 0-0.02 parts of everlasting purple RXS, 0-0.02 parts of ritanium of dracocephalum moldavica, and 0-0.02 parts of 204 yellow according to weight parts. The polypropylene composition for folding stool of the invention meets each index of the folding stool; and thefolding stool is widely used in open air, and has the characteristics of beautiful color, sun-proof, water-proof, high rigidity, impact resistance, scuffing resistance, low temperature resistance, high resistance, and aging resistance. In this way, the folding stool can be recycled.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene composition for folding stools and a preparation method thereof. Background technique [0002] Polypropylene is a common general-purpose plastic, which is polymerized from propylene monomers. The English abbreviation is PP. The material has poor heat resistance, a melting point of 165-175°C, low rigidity, low impact toughness, relatively low hardness, and poor low temperature resistance. , Poor scratch resistance. In the field of modified plastics, it is difficult to improve both rigidity and toughness, scratch resistance, and low temperature resistance at the same time, and cannot be directly used as raw materials for folding stools. According to the polymerization method, the arrangement of molecular segments of polypropylene is mainly divided into two categories: copolymerized polypropylene and homopolypropylene. Among them, homopolypropylene has poor...

AI Technical Summary

Problems solved by technology

[0002] Polypropylene is a common general-purpose plastic, which is polymerized from propylene monomers. The English abbreviation is PP. The material has poor heat resistance, a melting point of 165-175°C, low rigidity, low impact toughness, relatively low hardness, and poor low temperature resistance. , poor scratch resistance, in the field of modified plastics, it is difficult to improve its rigidity and toughness, scratch resistance and low temperature resistance at the same time, so it cannot be directly used as raw materials for folding stools

According to the polymerization method, the arrangement of molecular segments of polypropylene is mainly divided into two categories: copolymerized polypropylene and homopolypropylene. Among them, homopolypropylene has poor toughness and high rigidity, and the notched impact strength is 3.0-5.0KJ / m 2 , flexural modulus 1400-2200Mpa; copolymerized polypropylene has high impact toughness, but low rigidity, notched impact strength 5.0-50.0kg / m 2 , the flexural modulus is 700-1500mpa, and the Brinell hardness of the copolymerized polypropylene PP is as low as 30-60, and it is easy to freeze and crack outdoors in severe cold