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Polypropylene composite material for seamless instrument board and preparation method thereof

A technology of composite materials and polypropylene, which is applied in the field of polypropylene composite materials for seamless dashboards and its preparation, can solve the problems of large parts of seamless dashboards, tiger skin patterns and air marks, and affect the production capacity of enterprises. The effect of high rigidity-toughness balance and low-temperature impact, simple preparation method, and excellent injection molding performance

Inactive Publication Date: 2015-11-18
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the parts of the seamless instrument panel are too large and the structure is relatively complex, it is easy to produce defects such as tiger skin patterns and air marks during the injection molding process
The occurrence of these defects not only reduces the yield rate in the production process, but also affects the production capacity of the enterprise

Method used

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  • Polypropylene composite material for seamless instrument board and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0033] A polypropylene composite material for a seamless instrument panel and a preparation method thereof, specifically comprising the following steps:

[0034] (1) Add polypropylene, high-density polyethylene, polyolefin elastomer, talcum powder, antioxidant, light stabilizer, scratch-resistant agent, lubricant and toner to the high-speed mixer according to the formula ratio in Table 1. Mix at high speed in the mill for 5-10 minutes;

[0035] (2) Add the mixed material to the twin-screw extruder through the main feed to melt, extrude and granulate; wherein, the barrel temperature is 190-220°C, the screw speed is 300-500r / min, vacuum The degree is -0.04-0.1MPa;

[0036] (3) Put the material extruded by the twin-screw extruder into a drying oven at a drying temperature of 80-90°C for 2-4 hours to obtain a polypropylene composite material for a seamless instrument panel.

[0037] Wherein, the main performance indexes in Examples 1-5 are shown in Table 2.

[0038] Table I ...

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PUM

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Abstract

The invention discloses a polypropylene composite material for a seamless instrument board and a preparation method thereof. The polypropylene composite material for the seamless instrument board is prepared from, by weight parts, 40-60 parts of polypropylene, 10-20 parts of high density polyethylene, 15-25 parts of polyolefin elastomer, 20-30 parts of talc, 0.2-0.6 part of antioxidant, 0.4-1 part of light stabilizer, 0.5-3 parts of anti-scratching agent, 0.2-0.6 part of lubricant and 1-3 parts of toner. The prepared polypropylene composite material has high rigid-tough balance, low temperature impact, weather resistance and scraping resistance and can meet the performance requirements of automobile main engine plant seamless instrument boards. The polypropylene composite material further has excellent injection molding performance, and injection molding parts are excellent in appearance and free of defects such as tiger skin and gas marks.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a polypropylene composite material for a seamless instrument panel and a preparation method thereof. Background technique [0002] In the past, car dashboards were mainly non-airbag dashboards, which are cheap and easy to produce. But when there is a car accident, this instrument panel can not give the necessary safety protection for the passenger. As people pay more attention to the safety of automobiles, the demand for dashboards with airbags is also increasing. However, such an airbag instrument panel may generate sharp fragments to injure passengers, especially children, when the airbag is deployed to protect passengers. Therefore, in order to make the airbag can be opened normally, people can increase the airbag cover plate device at the place above the airbag during design. However, there will be contact marks on the contact surface with the instrumen...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L53/00C08L23/06C08L23/08C08K13/02C08K3/34B29B9/06B29C47/92B29C48/92
CPCC08L23/14B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L53/00C08L2205/03C08L2205/035C08L2207/062C08L2207/14C08L23/06C08L23/0815C08K13/02C08K3/34
Inventor 胡林张奎徐剑李荣群
Owner ORINKO NEW MATERIAL CO LTD
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