Scratch resistant and shock proof propylene-ethylene block copolymerization polypropylene modified material

Abstract

The invention discloses a scratch resistant and shock proof propylene-ethylene block copolymerization polypropylene modified material, comprising the following raw materials in parts by weight: 40-90 parts of propylene-ethylene block copolymerization polypropylene, 0-30 parts of talcum powder, 5-25 parts of elastomer, 0.2-5 parts of silicone powder, 0.5-2 parts of stabilizer and 0.1-0.5 part of processing agent. The propylene-ethylene block copolymerization polypropylene modified material can show excellent scratch resistance and satisfactory shock proof performance at the same time, and especially the low-temperature shock intensity can satisfy the requirements of middle-high grade automotive upholsteries. The invention also discloses a method for preparing the propylene-ethylene block copolymerization polypropylene modified material, which has simple operation and low cost, does not need special equipment, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a polypropylene modified material in the field of polymer materials, in particular to a scratch-resistant and impact-resistant propylene-ethylene block copolymerized polypropylene modified material. Background technique [0002] Automobiles are one of the most important means of transportation in modern society. In 2009, my country's cumulative production and sales of automobiles reached 13 million, an increase of 38% over the same period last year, becoming the world's largest automobile consumer. However, automobiles are large energy consumers. In order to save energy, the automobile industry will develop in the direction of energy conservation, environmental protection, and safety in the future. According to reports, 1% weight loss of general auto parts can save 1% fuel; this requires that the used auto materials have the characteristics of light weight, simple processing, and easy recycling. Polypropylene is a general-purp...

AI Technical Summary

Problems solved by technology

However, there are some problems in these methods: for example, adding erucamide to polypropylene material will reduce the strength and toughness of the material to a certain extent, especially after long-term use, it is easy to precipitate on the surface and affect the appearance; Propylene materials have a great influence on the fluidity and impact properties of materials, especially the low-temperature impact properties of materials are greatly reduced; although high rigidity and high hardness polypropylene has good scratch resistance, its impact properties are very poor , it is difficult to meet the low temperature impact resistance requirements

[0008] To sum up, none of the existing scratch-resistant polypropylene materials simultaneously exhibit excellent scratch resistance and satisfactory impact resistance (especially low-temperature impact strength). Therefore, if a scratch-resistant polypropylene material can be developed The impact-resistant propylene-ethylene block copolymer polypropylene modified material will have broad market prospects

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