Talc powder filled polypropylene with high rigidity, high heat resistance and high scratch resistance and method for preparing same

A technology of talc powder and polypropylene, which is applied in the field of high rigidity, high heat resistance and scratch resistance talc powder filled polypropylene and its preparation, can solve the problems of low rigidity, increased part weight, low temperature impact resistance to scratches, etc. Achieve the effect of wide source, improve rigidity and reduce weight

Active Publication Date: 2005-06-29
CHONGQNG PRET NEW MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene also has the disadvantages of poor heat resistance, low rigidity, scratch resistance and poor low temperature impact performance.
[0003] The rigidity, strength and heat resistance of polypropylene materials are usually greatly improved by adding glass fibers, but there are disadvantages of poor molding performance and poor surface quality of products.
The method of adding talcum powder is also used to improve the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The polypropylene mentioned in the present invention is a homopolymer or block co-polypropylene with high isotacticity and high crystallinity, wherein the comonomers of the block co-polypropylene are ethylene, butene to 20-carbon olefin. The typical comonomer in the copolypropylene used in the present invention is ethylene, and its content does not exceed 15 mol%, and more commonly does not exceed 5 mol%.

[0029] The polypropylene used in the present invention can be obtained by different polymerization methods, such as suspension polymerization and solution polymerization. The state of propylene monomer can be gas phase or slurry state. The catalyst used is usually Ziegler-Natta type, of course, it also includes Any other catalyst can prepare polypropylene with a highly regular structure, and its isotacticity should be greater than 99%.

[0030] The fluidity of polypropylene used in the present invention is usually expressed by melt flow rate (MFR). The test condition is ...

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PUM

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Abstract

The invention relates to high molecular compound material, especially a polypropylene filled with talcum powder, with outstanding and resistance to heat and its preparing method, which can be applied in auto and electric field, such as pate of instrument,door, plate of augxiliary instrument, deconating stick and other ornament inside and outside automobile. The invention is comprised of polypropylene and talcum powder... with high crystal and the percentages of each component are: polypropylene 60-90, talcum powder 10-40, coupling agent 3-10, stabalizer 0.1-1.0, of talcum powder0.2-1.5, processing aid 0.05-1.0. The preparing method is:mix the polypropylene, talcum powder, stabalizer, of talcum powder and processing aid in agitator, then place then into double screw extruderto form the particles. Keep the same, it has low density, larger hardnessof the surface, advanced strength to resist scratch, can satisfy the requirements of elements in kinds of auto.

Description

Technical field [0001] The invention relates to a polymer composite material, in particular to a high-rigidity, high heat-resistant and scratch-resistant talcum powder-filled polypropylene and a preparation method thereof. This type of polymer composite material can be used in the fields of automobiles and household appliances, such as car dashboards , Door panels, door guards, auxiliary dashboards, glove boxes, decorative pillars and other automotive interior and exterior trim parts. Background technique [0002] Polypropylene has the advantages of excellent processing performance, high toughness, good resistance to gasoline and chemicals, light weight and low price, and it is widely used in automobile interior and exterior trim parts, electronic and household appliance products, etc. However, polypropylene also has the disadvantages of poor heat resistance, low rigidity, scratch resistance and poor low-temperature impact performance. [0003] The method of adding glass fiber is...

Claims

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Application Information

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IPC IPC(8): B29C47/40C08K5/3435C08L23/12
Inventor 张祥福周文汪勇
Owner CHONGQNG PRET NEW MATERIAL
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