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Polyamide composite material and its preparation method

A composite material, polyamide technology, applied in the field of polyamide materials, can solve the problems of carbon fiber advantages not fully reflected, high cost of epoxy resin, poor material performance, etc., to solve dimensional instability, ultra-high strength and Good modulus and dimensional stability

Inactive Publication Date: 2006-05-03
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high cost of epoxy resin and the labor-intensive hand lay-up process limit the use of carbon fiber composites in industrial-scale applications. Due to the surface bonding ability of thermoplastics and carbon fibers and the uniformity of dispersion, the advantages of carbon fibers have not been fully realized. The embodiment of the material performance is not outstanding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0030] Nylon 66 is made of nylon 66 resin chips with an apparent viscosity of 2.8, the carbon fiber is T300 from Toray, Japan, the compatibilizer is CMG9801 from Shanghai Rizhisheng Company, the antioxidant is 1098 / 168 (1:1) compound, and the lubricant is The agent is high molecular weight polysiloxane.

[0031] raw material name

Proportion 1 (wt%)

Proportion 2 (wt%)

PA66 slice

74

60

T300

20

31

CMG9801

5

8

1098 / 168(1∶1)

0.5

0.5

High Molecular Weight Polysiloxane

0.5

0.5

[0032] Put the above components except carbon fiber into a high-speed mixer and mix for 4 minutes, discharge, and then extrude and granulate with a screw extruder together with carbon fiber. The processing temperature is 270 ° C, and the screw speed is 250 rpm.

[0033] The product performance contrast of sample 1, sample 2 and SILMID 6 CV20 made according to embodiment 1, embodiment 2

[0034] ...

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Abstract

The invention relates to a polyamide composite material comprising raw materials of the following constituents (by weight proportion): nylon 66 sections 50-75%, carbon fiber 15-40%, compatibilzer 4-10%, anti-oxidant 0.1-1% and lubricating agent 0.1-0.5%. The invention also discloses the preparing process.

Description

technical field [0001] The invention relates to a polyamide composite material and a preparation method thereof, which can be used for injection molding and extrusion to manufacture military products, aerospace devices and sports medical devices, and belongs to the technical field of polyamide materials. Background technique [0002] Carbon fiber-reinforced composites have the advantages of light weight and high mechanical properties, especially flexural modulus or stiffness. To minimize weight, carbon fiber-reinforced materials are traditionally made using epoxy resins without fillers. Due to the use of hand lay-up or resin transfer molding processes, the material is often used to manufacture low-volume aerospace components, racing cars and other special products. However, the high cost of epoxy resin and the labor-intensive hand lay-up process limit the use of carbon fiber composites in industrial-scale applications. Due to the surface bonding ability of thermoplastics and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02B29C48/395C08K7/06
Inventor 辛敏琦陈晓东杨涛唐倬吴小龙
Owner SHANGHAI SUNNY
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