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Method for preparing PA66 grafted carbon nano-tube

A carbon nanotube and PA66 technology, which is applied in the field of preparation of polyamide 66 grafted carbon nanotubes, can solve problems such as poor dispersibility of carbon nanotubes, and achieve the effects of green reaction conditions, simple preparation method and simple method.

Active Publication Date: 2017-03-22
东莞和兴新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the present invention provides a preparation method of PA66 grafted carbon nanotubes, the purpose of which is to solve the problem of poor dispersion of carbon nanotubes in the PA66 matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation method of the PA66 grafted carbon nanotubes of the present embodiment, the steps are as follows:

[0018] (1) Put 1g of CNT powder into the chamber of the plasma processor for NH 3 Plasma modification, wherein the specific process conditions are that the power of the reaction is 150W, NH 3 The flow rate is 15mL / min, the pressure is 1kPa, the treatment time is 0.5h, and the surface aminated carbon nanotubes (CNT-NH 2 );

[0019] (2) Dissolve 1mL of 50% glutaraldehyde (0.005mol) into 100mL of water, then add 0.06g of CNT-NH2 (0.005mol) into the glutaraldehyde aqueous solution, stir and react for 6 hours at room temperature, and use Wash with ionized water, centrifuge, and dry to obtain aldylated carbon nanotubes (CNT-CHO);

[0020] (3) Dissolve 1g PA66 (0.005mol) into 100mL formic acid solution, then add 0.18g CNT-CHO (0.015mol) into the PA66 solution, stir and react for 8h, centrifuge the reacted product, wash with formic acid solution, ethanol Washin...

Embodiment 2

[0022] The preparation method of the PA66 grafted carbon nanotubes of the present embodiment, the steps are as follows:

[0023] (1) Put 1g of CNT powder into the cavity of the plasma processor for NH 3 Plasma modification, wherein the specific process conditions are that the power of the reaction is 260W, NH 3 The flow rate is 40mL / min, the pressure is 5kPa, and the treatment time is 2h to obtain surface aminated carbon nanotubes (CNT-NH2);

[0024] (2) Dissolve 1mL of 50% glutaraldehyde (0.005mol) into 100mL of water, then add 0.18g of CNT-NH2 (0.015mol) into the glutaraldehyde aqueous solution, stir and react for 8 hours at room temperature, and use deionized Washing with water, centrifugation, and drying to obtain aldylated carbon nanotubes (CNT-CHO);

[0025] (3) Dissolve 1g PA66 (0.005mol) into 100mL formic acid solution, then add 0.12g CNT-CHO (0.010mol) into the PA66 solution, stir and react for 12h, centrifuge the reacted product, wash with formic acid solution, eth...

Embodiment 3

[0027] The preparation method of the PA66 grafted carbon nanotubes of the present embodiment, the steps are as follows:

[0028] (1) Put 1g of CNT powder into the cavity of the plasma processor for NH3 plasma modification. The specific process conditions are that the power during the reaction is 200W, and the NH3 3 The flow rate is 30mL / min, the pressure is 3kPa, and the treatment time is 1h to obtain surface aminated carbon nanotubes (CNT-NH2);

[0029] (2) Dissolve 1mL of 50% glutaraldehyde (0.005mol) into 100mL of water, then add 0.12g of CNT-NH2 (0.010mol) into the glutaraldehyde aqueous solution, stir and react for 7 hours at room temperature, and use deionized Washing with water, centrifugation, and drying to obtain aldylated carbon nanotubes (CNT-CHO);

[0030] (3) Dissolve 1g of PA66 (0.005mol) in 100ml of formic acid solution, then add 0.06g of CNT-CHO (0.005mol) into the PA66 solution, stir and react for 10h, centrifuge the reacted product, wash with formic acid sol...

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Abstract

The invention discloses a method for preparing a PA66 grafted carbon nano-tube. The method comprises the following steps: aminating the surface of a carbon nano-tube by adopting an ammonia plasma technology to obtain CNT-NH2; (2) modifying the surface of the CNT-NH2 by utilizing dialdehyde compounds to formylate the CNT surface to obtain CNT-CHO; and reacting -NH2 on the PA66 surface with the formylated CNT-CHO to obtain the PA66 grafted CNT (PA66-CNT). The method for functionalizing the CNT surface is relatively simple, and can be used for keeping the completeness of the CNT body structure and solving the problem that CNT is easily agglomerated in the PA66 matrix, so that the crystallization performance of the PA66 is effectively improved, and the antistatic performance of the PA66 is remarkably improved. The method has the advantages of low cost, short preparation period, mild reaction conditions, environmental friendliness and the like, and has relatively wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of nylon composite material production, and in particular relates to a preparation method of polyamide 66 grafted carbon nanotubes. Background technique [0002] Polyamide 66 (PA66) is a high-temperature-resistant, high-strength high-performance polymer. It is the first of the five major engineering plastics. In addition to good mechanical strength, PA66 also has the characteristics of toughness, wear resistance, solvent resistance, and wide application temperature. It is widely used in machinery industry, transportation industry, automobile industry, electronics industry and other fields. However, PA66 has high resistance characteristics. When it contacts or rubs with other objects or materials, it is easy to generate static electricity and accumulate continuously. After the static electricity accumulates, the surface roughness of the nylon material will increase, which will make the surface of the nylon ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/00C08K7/24C08L77/06
CPCC08K7/24C08K9/00C08K9/04C08K9/08C08K2201/011C08L2201/04C08L77/06
Inventor 王延伟于翔徐茜陈垒田银彩杨秀琴宋会芬
Owner 东莞和兴新材料科技有限公司
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