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PP/PA (polypropylene/polyamide) composite material and preparation method thereof

A technology of composite materials and mixed materials, which is applied in the field of polymer materials, can solve the problems of low notched impact strength, high price, and low impact strength, and achieve the effects of reducing production costs, improving notched impact strength, and expanding the application range

Inactive Publication Date: 2012-01-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the low notched impact strength of pure nylon materials, the application of many products and devices is limited. Although the traditional method of modifying nylon can solve the shortcoming of low notched impact strength, it is expensive

Method used

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  • PP/PA (polypropylene/polyamide) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The raw materials were weighed according to the following proportions: PP resin 47.5%, PA resin 29.7%, toughening agent 6%, compatibilizer 16%, composite lubricant 0.5%, antioxidant 0.3%;

[0038] Pre-mixed raw materials, the mixing process is: first mix PP, PA resin, toughening agent at 100r / min for 1min; then add lubricant and other modification additives and mix at 500r / min for 3min to form a mixed material;

[0039] Put the mixed raw materials in a twin-screw extruder for melt extrusion and granulation. The temperature and process optimization of each section of the mixed material in the twin-screw extruder are: 180°C in the first zone, 240°C in the second zone ℃, 240℃ in the third zone, 240℃ in the fourth zone, 210℃ in the fifth zone, 210℃ in the sixth zone, 200℃ in the seventh zone, 210℃ in the eighth zone, and 230℃ in the head, the melt pressure is controlled at 2-4MPa, among which, the seventh zone Open the vacuum port for vacuuming; the screw speed of the twin-...

Embodiment 2

[0041] Raw materials were weighed according to the following proportions: PP resin 47.2%, PA resin 35%, toughening agent 5%, compatibilizer 12%, composite lubricant 0.5%, antioxidant 0.3%;

[0042] The preparation process is the same as in Example 1.

Embodiment 3

[0044] Weigh the raw materials according to the following ratio: PP resin 45.2%, PA resin 40%, toughening agent 4%, compatibilizer 10%, composite lubricant 0.5%, antioxidant 0.3%;

[0045] The preparation process is the same as in Example 1.

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Abstract

The invention discloses a PP / PA (polypropylene / polyamide) composite material and a preparation method thereof. The PP / PA composite material consists of the following components in percentage by weight: 40-48% of PP resin, 29-49% of PA resin, 2-6% of flexibilizer, 8-16% of compatilizer, 0.5% of lubricant and 0.3% of antioxidant. In the invention, the polypropylene and the polyamide are blended and modified; a prepared blended alloy material has the specific performances of the polypropylene and the polyamide; the notch impact strength of the polyamide is improved greatly; the applied range is enlarged; the market competitiveness is enhanced; and the production cost of a product is decreased.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a PP / PA composite material and a preparation method thereof. [Background technique] [0002] Polypropylene (PP) has the characteristics of low price, excellent wear resistance, chemical resistance, excellent electrical insulation, good mechanical strength and good processing and molding; polyamide (PA) has excellent comprehensive mechanical properties Performance, currently PA engineering plastics are widely used in aviation, electronics, automobiles and medical, sports equipment and other industries. [0003] Due to the low notched impact strength of pure nylon materials, the application of many products and devices is limited. Although the traditional method of modifying nylon can solve the shortcoming of low notched impact strength, it is expensive. [Content of the invention] [0004] The technical problem to be solved by the invention is to provide a PP / PA composite mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06B29C47/92B29B9/06C08L77/02C08L77/00C08L23/14B29C48/92
Inventor 徐东徐永罗秀永
Owner SHENZHEN KEJU NEW MATERIAL
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