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A kind of carbon nanotube modified high conductive nylon composite material and preparation method thereof

A technology of carbon nanotube modification and nylon composite materials, which is applied in the field of composite material preparation, can solve the problems of poor conductivity and high surface resistivity of nylon 66, and achieve the elimination of safety hazards, good conductivity and low surface resistivity Effect

Active Publication Date: 2021-02-12
广州润锋科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing nylon 66 has a high surface resistivity and poor electrical conductivity, which may cause safety hazards due to the accumulation of static electricity during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of the highly conductive nylon composite material of embodiment 1 carbon nanotube modification

[0038] S21. Take 0.2 parts of the modified carbon nanotube material, 1 part of the lubricant and 2 parts of the compatibilizer, mix them and put them into a mixer and stir them evenly;

[0039] S22. Add 100 parts of nylon 66, stir evenly, extrude and granulate in a twin-screw extruder, then cool, pelletize, and dry to obtain the carbon nanotube-modified high-conductivity nylon composite material;

[0040] Described lubricant is calcium stearate; Described compatibilizer is maleic anhydride graft compatibilizer;

[0041] The modified carbon nanotube material is prepared by a method comprising the following steps:

[0042] S11. Mix carbon nanotubes and graphene in a weight ratio of 7:3, place them in a calciner, and heat to 500° C. for calcination in an oxygen atmosphere to obtain a carbon nanotube and graphene calcined mixture;

[0043] S12. adding water and...

Embodiment 2

[0048] The preparation of the highly conductive nylon composite material of embodiment 2 carbon nanotube modification

[0049] S21. Take 0.2 parts of the modified carbon nanotube material, 1 part of the lubricant and 2 parts of the compatibilizer, mix them and put them into a mixer and stir them evenly;

[0050] S22. Add 100 parts of nylon 66, stir evenly, extrude and granulate in a twin-screw extruder, then cool, pelletize, and dry to obtain the carbon nanotube-modified high-conductivity nylon composite material;

[0051] Described lubricant is calcium stearate; Described compatibilizer is maleic anhydride graft compatibilizer;

[0052] The modified carbon nanotube material is prepared by a method comprising the following steps:

[0053] S11. Mix carbon nanotubes and graphene in a weight ratio of 9:4, place them in a calciner, and heat to 400° C. for calcination for 5 hours in an oxygen atmosphere to obtain a carbon nanotube and graphene calcined mixture;

[0054] S12. addi...

Embodiment 3

[0059] The preparation of the highly conductive nylon composite material of embodiment 3 carbon nanotube modification

[0060] S21. Take 0.2 parts of the modified carbon nanotube material, 1 part of the lubricant and 2 parts of the compatibilizer, mix them and put them into a mixer and stir them evenly;

[0061]S22. Add 100 parts of nylon 66, stir evenly, extrude and granulate in a twin-screw extruder, then cool, pelletize, and dry to obtain the carbon nanotube-modified high-conductivity nylon composite material;

[0062] Described lubricant is calcium stearate; Described compatibilizer is maleic anhydride graft compatibilizer;

[0063] The modified carbon nanotube material is prepared by a method comprising the following steps:

[0064] S11. Mixing carbon nanotubes and graphene in a weight ratio of 9:3, placing them in a calciner, heating to 600° C. for 3 hours in an oxygen atmosphere, and calcining to obtain a carbon nanotube and graphene calcined mixture;

[0065] S12. ad...

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Abstract

The invention relates to the technical field of composite material preparation, and specifically discloses a carbon nanotube-modified high-conductivity nylon composite material and a preparation method thereof. The carbon nanotube-modified high-conductivity nylon composite material includes the following raw materials in parts by weight: 80-120 parts of nylon; 0.05-1 part of modified carbon nanotube material; 0.5-2 parts of lubricant; compatibilizer 1 to 3 servings. The high-conductive nylon composite material of the present invention has good electrical conductivity and low surface resistivity, and can effectively eliminate the potential safety hazards caused by accumulating static electricity during use.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a carbon nanotube-modified high-conductivity nylon composite material and a preparation method thereof. Background technique [0002] Polyamide is commonly known as nylon (Nylon), the English name Polyamide (referred to as PA), is the general term for thermoplastic resins containing repeated amide groups -[NHCO]- on the main chain of the molecule, including aliphatic PA, aliphatic-aromatic PA and aromatic PA . [0003] Polyhexamethylene adipamide, commonly known as nylon 66, is a thermoplastic resin, white solid, with high mechanical strength and hardness, and great rigidity. It can replace non-ferrous metal materials to make machine casings, automobile engine blades, etc.; it can also be used to make synthetic fibers. However, the existing nylon 66 has high surface resistivity and poor electrical conductivity, and it will accumulate static electricity du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L51/00C08K13/06C08K9/02C08K9/00C08K7/24C08K5/098C08K3/04
CPCC08K2201/001C08K2201/011C08L77/00C08L2201/04C08L51/00C08K13/06C08K9/02C08K9/00C08K7/24C08K5/098C08K3/04
Inventor 叶德生
Owner 广州润锋科技股份有限公司