Impact-resistant, low-temperature-resistant and high-transparency polypropylene composition

Abstract

The invention discloses an impact-resistant, low-temperature-resistant and high-transparency polypropylene composition which comprises the following components in parts by weight: 100 parts of polypropylene random copolymer, 0.001-0.2 parts of a main antioxidant, 0.001-0.2 parts of an auxiliary antioxidant, 0.001-0.2 parts of a nucleating agent, 0.001-0.2 parts of an acid absorbent, 3-20 parts ofpolypropylene- ethylene / propylene block copolymer and 3-40 parts of a vinyl elastomer. The polypropylene composition disclosed by the invention has the characteristics of excellent rigidity and toughness balance, high transparency, excellent low-temperature toughness and the like, overcomes the defects of low rigidity, poor low-temperature toughness and the like of the current transparent polypropylene, and can enable the high-transparency polypropylene to meet the use requirements of an environment with the temperature of -20 DEG C or below.

Description

technical field [0001] The invention relates to a polypropylene composition, in particular to an impact-resistant, low-temperature resistant and highly transparent polypropylene composition. It belongs to the technical field of plastics. Background technique [0002] Polypropylene has excellent corrosion resistance, electrical insulation and good mechanical properties, non-toxic, low relative density, low price, easy processing and molding and other excellent characteristics, especially the excellent combination of thermal properties and mechanical properties, has become a general-purpose plastic Among them, it is the fastest growing and the most active in new product development. [0003] Ordinary homopolypropylene usually has high rigidity, heat resistance, and certain transparency, but it also has poor impact resistance, especially when the ambient temperature is low, and sometimes homopolypropylene products are damaged during transportation. Cracking occurs. Due to th...

AI Technical Summary

Problems solved by technology

For some high melt index impact copolymer polypropylene, its transparency cannot be effectively improved, so its use is also subject to certain restrictions

[0006] Therefore, the high-transparency polypropylene prepared by the existing technology cannot be used in an environment below -20°C.

If you must use polypropylene material, you can only use opaque polypropylene material instead of high transparent polypropylene material

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