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

A technology of copolymerizing polypropylene and ethylene blocks, applied in the field of propylene-ethylene block copolymerized polypropylene modified materials, can solve the problems of poor impact performance, easy precipitation on the surface, reducing material strength and toughness, etc., and achieve excellent scratch resistance. The effect of wiping performance, broad market prospect and simple operation

Inactive Publication Date: 2010-10-20
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example

[0044] Examples 1~5

[0045] The propylene-ethylene block copolymer polypropylene, talc powder, elastomer, silicone powder, processing aids, stabilizers and other components are mixed uniformly in a mixer according to the weight ratio in Table 1. The mixed materials are fed into the twin-screw extruder from the feeder. The temperature of the twin-screw extruder from the feeding section to the head is: 190℃, 210℃, 220℃, 220℃, 220℃, 220°C, 220°C, the temperature of the die is 210°C. After double-screw high-speed (screw rotation speed is 800r / min) shearing, mixing, extruding, drawing, air-cooling, pelletizing, drying and packaging by the head, the propylene-ethylene block copolymer polypropylene modified material is prepared Finished product.

[0046] Table 1

[0047] Component

[0048] Component

[0049] The raw material sources and main performance indexes used in Examples 1 to 5 are shown in Table 2:

[0050] Table 2

[0051]

[0052]

[0053]

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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...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/14C08L83/04C08K13/02C08K3/36B29C47/92B29C48/92
Inventor 李俊黄志杰郑京连沈岳新
Owner CGN JUNER NEW MATERIALS
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