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Conducing composite material and preparation method thereof

A technology of conductive composite materials and carbon nanotubes, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of limited application range, performance limitations, low efficiency, etc., to achieve increased antistatic performance, performance improvement, The effect of expanding the range of application

Inactive Publication Date: 2007-12-12
上海扬泽纳米新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the mature conductive polyamide (PA6, PA66) composite materials are mostly filled with copper fibers, carbon black, carbon fibers, etc. Although they have the functions of eliminating static electricity and anti-static, their efficiency is very low and their performance is limited. And due to the large amount of filler used, it will affect its mechanical properties such as tensile strength
Applications are limited

Method used

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  • Conducing composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of 1% carbon nanotube / nylon 6 (PA6) composite material:

[0032] 1. Preparation of mixture of caprolactam and carbon nanotubes:

[0033] Weigh 3.0 grams of caprolactam, 150 mg of 6-aminocaproic acid and 150 mg of benzoyl peroxide on an analytical day, mix them evenly and place them in an agate mortar, grind them into a white powder, and then add 30 mg of carboxyl single-walled carbon Nanotubes (65% concentrated nitric acid at 90° C., ultrasonic vibration, reflux for 3.5 hours) and mixed uniformly.

[0034] 2. Polycondensation of a mixture of caprolactam and carbon nanotubes:

[0035] Take a 25×150mm test tube with a side tube as a polycondensation tube, add the above-mentioned mixture of caprolactam and carbon nanotubes, and press it to the bottom of the test tube as far as possible with a glass rod. The side port of the polycondensation tube is used as the nitrogen outlet, and a rubber tube is connected to the water. Nitrogen was blown for 5 minutes, the...

Embodiment 2

[0038] Preparation of 2% carbon nanotube / nylon 6 (PA6) composite material:

[0039] 1. Preparation of a mixture of caprolactam and carbon nanotubes:

[0040] Weigh 3.0 grams of caprolactam, 150 mg of 6-aminocaproic acid and 150 mg of azobisisobutyronitrile with an analytical balance, mix them evenly and place them in an agate mortar, grind them into a white powder, and then add 60 mg of carboxylated single-walled carbon Nanotubes (65% concentrated nitric acid refluxed at 90°C for 3.5 hours) and mixed well.

[0041] 2. Polycondensation of a mixture of caprolactam and carbon nanotubes:

[0042] Same as Example 1, carbon nanotubes account for 2% of the polyamide weight in the composite material obtained, measure its electrical conductivity with four-probe method, and the measurement result is 10 -6 S / cm.

Embodiment 3

[0044] Preparation of 3% carbon nanotube / polyamide (PA6) composite material:

[0045] 1. Preparation of a mixture of caprolactam and carbon nanotubes:

[0046] Weigh 3.0 grams of caprolactam, 150 mg of 6-aminocaproic acid and 150 mg of sodium hydroxide with an analytical balance, mix them evenly and place them in an agate mortar, grind them into a white powder, then add 90 mg of carboxylated single-walled carbon nanotubes ( 65% concentrated nitric acid was refluxed at 90°C for 3.5 hours) and mixed evenly.

[0047] 2. Polycondensation of a mixture of caprolactam and carbon nanotubes:

[0048] Same as Example 1, carbon nanotubes account for 3% of the polyamide weight in the composite material obtained, measure its electrical conductivity with four-probe method, and the measurement result is 4 * 10 -6 S / cm.

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Abstract

The invention relates to a conductive complex material, comprising functional carbon nanopipe and polyamide. The weight of said carbon nanopipe is 0.1- 10% of that of polyamide, and said carbon nanopipe is carboxylate carbon nanopipe. The carboxyl in carboxylate carbon nanopipe is reacted with polyamide or amidol in polyamide monomer to generate amido bond. The invention is characterized in that the antistatic property of polyamide is improved, and the conductivity is avaliable, and the application range is enlarged, such as used as nylon rope, nylon bale, pad and nylon braid.

Description

technical field [0001] The invention relates to a conductive composite material and a preparation method thereof, relating to a composite material containing carbon nanotubes and a preparation method thereof, specifically, uniformly dispersing the nanotubes in a high molecular polymer and a preparation method thereof. Background technique [0002] Carbon nanotubes are a new type of one-dimensional nanomaterials. The diameter is generally several to tens of nanometers, while the length of carbon nanotubes is generally tens of nanometers to several microns. Carbon nanotubes have excellent mechanical and electrical properties, and microwave absorption. Performance and better thermal stability, is an ideal polymer additive. With its unique mechanical, electrical and chemical properties, unique quasi-one-dimensional tubular molecular structure and many potential application values ​​in future high-tech fields, it has become a research hotspot in the fields of chemistry, physics a...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08K7/00C08G63/78H01B1/24C08K3/04
Inventor 王江玲王犟平梁金栋
Owner 上海扬泽纳米新材料有限公司
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