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Method for preparing carbon nanotube/polybenzoate composite

A technology of carbon nanotubes and composite materials, which is applied in the preparation field of composite material technology, can solve problems such as weak impact and wear resistance, low mechanical properties, and poor interface bonding performance, and achieve improved impact and wear properties, simple process, The effect of improving mechanical properties and tribological properties

Inactive Publication Date: 2011-09-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology only simply blends polytetrafluoroethylene, high temperature resistant resin and polyphenylene ester, and at the same time, the mechanical properties of polytetrafluoroethylene and high temperature resistant resin reinforced materials are relatively low
Therefore, after blending and preparing composite materials, there are disadvantages such as poor interfacial bonding performance, low comprehensive mechanical properties, and weak impact and wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The raw materials used include: POB, CGZ-351 type produced by Zhonghao Chengdu Chenguang Chemical Research Institute; carbon nanotubes: multi-walled carbon nanotubes produced by Shenzhen Nanometer Port Co., Ltd., and the rare earth solution is prepared according to the following weight percentages:

[0025] Lanthanum chloride: 0.5%, ethanol: 98.2%, ammonium chloride: 1%, urea: 0.3%

[0026] First, carbon nanotubes are pretreated and surface modified. Add 1 g of multi-walled carbon nanotubes (MWNTs) and 200 ml of mixed acid (volume ratio of concentrated sulfuric acid to concentrated nitric acid 3:1) into a flask and heat to reflux, keep boiling for 2 hours, then transfer it to a beaker. Suction filtration was performed with a filter membrane with a pore size of 0.22 μm, and the carbon nanotubes after suction filtration were dried in a vacuum oven at 100° C. for 6 hours to obtain multi-walled carbon nanotubes containing active groups such as -OH, -COOH.

[0027] Next, pr...

Embodiment 2

[0031] The raw materials used include: POB, CGZ-351 type produced by Zhonghao Chengdu Chenguang Chemical Research Institute; carbon nanotubes: multi-walled carbon nanotubes produced by Shenzhen Nanometer Port Co., Ltd., and the rare earth solution is prepared according to the following weight percentages:

[0032] Cerium chloride: 0.7%, ethanol: 98%, ammonium chloride: 1%, urea: 0.3%

[0033]First, carbon nanotubes are pretreated and surface modified. Add 3g of multi-walled carbon nanotubes (MWNTs) and 200ml of mixed acid (volume ratio of concentrated sulfuric acid to concentrated nitric acid: 3:1) into the flask and heat to reflux, keep boiling for 3 hours, then transfer it to a beaker. Suction filtration was performed with a filter membrane with a pore size of 0.22 μm, and the carbon nanotubes after suction filtration were dried in a vacuum oven at 100° C. for 8 hours to obtain multi-walled carbon nanotubes containing active groups such as -OH, -COOH.

[0034] Next, prepare...

Embodiment 3

[0039] The raw materials used include: POB, CGZ-351 type produced by Zhonghao Chengdu Chenguang Chemical Research Institute; carbon nanotubes: multi-walled carbon nanotubes produced by Shenzhen Nanometer Port Co., Ltd., and the rare earth solution is prepared according to the following weight percentages:

[0040] Lanthanum oxide: 0.9%, ethanol: 97.4%, ammonium chloride: 1.5%, urea: 0.2%

[0041] First, carbon nanotubes are pretreated and surface modified. Add 5 g of multi-walled carbon nanotubes (MWNTs) and 200 ml of mixed acid (volume ratio of concentrated sulfuric acid to concentrated nitric acid 3:1) into the flask and heat to reflux, keep boiling for 2.5 hours, then transfer it to a beaker. Suction filtration was performed with a filter membrane with a pore size of 0.22 μm, and the filtered carbon nanotubes were dried in a vacuum oven at 100° C. for 5.5 hours to obtain multi-walled carbon nanotubes containing active groups such as -OH, -COOH.

[0042] Next, prepare an aq...

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Abstract

The invention relates to a method for preparing carbon nanotube / polybenzoate composite, which belongs to the technical field of the composite and comprises the following steps: carrying out polycondensation reaction on an oxidized and modified carbon nanotube and ethylene diamine tetraacetic acid solution, carrying out chemical complexing reaction on the product of reaction and rare earth solution to generate an activated carbon nanotube, blending the activated carbon nanotube with polybenzoate solution with ultrasound waves to prepare carbon nanotube / polybenzoate blend, cold pressing the carbon nanotube / polybenzoate blend, and sintering to form the carbon nanotube / polybenzoate composite. The process for preparing the carbon nanotube / polybenzoate composite is simple and can better improve the carbon nanotube and polybenzoate matrix interface binding force and further improve the comprehensive mechanical properties and tribological properties of the carbon nanotube / polybenzoate composite.

Description

technical field [0001] The invention relates to a preparation method in the technical field of composite materials, in particular to a preparation method for treating carbon nanotube / polyphenylene ester composite materials with a rare earth ethylenediaminetetraacetic acid solution. Background technique [0002] Polyphenylene is a new type of high-temperature-resistant special engineering plastic developed in the 1970s. It has high thermal stability, good electrical insulation and excellent chemical resistance. It has the largest thermal conductivity among plastics. It can maintain high mechanical rigidity in a wide temperature range, resists compression creep, is easy to machine cutting, has high load-bearing capacity and good self-lubricating property, does not damage the mating parts, and the dynamic friction coefficient of molded parts is 0.16~0.32, oil-free lubrication is possible. Among all polymer materials, polyphenylene has the best comprehensive properties such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08K9/04C08K9/02C08K7/00C08K3/04
Inventor 程先华程海正俞亮孙志永韦山
Owner SHANGHAI JIAO TONG UNIV
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