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Conductive polymethyl methacrylate composite material and preparation method of the conductive polymethyl methacrylate composite material

A technology of polymethyl methacrylate and composite materials, which is applied to conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problem of lack of polar groups on the surface of carbon nanotubes, easy agglomeration and winding of carbon nanotubes, and weak affinity. and other problems, to achieve the effect of good conductivity, good durability and good compatibility

Active Publication Date: 2011-09-14
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the lack of polar groups on the surface of carbon nanotubes has a weak affinity with the polymer matrix
Therefore, how to solve the problem of carbon nanotubes being easy to agglomerate and entangle and are difficult to disperse, and how to improve the compatibility between carbon nanotubes and the matrix have become the focus and difficulty of related research.

Method used

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  • Conductive polymethyl methacrylate composite material and preparation method of the conductive polymethyl methacrylate composite material
  • Conductive polymethyl methacrylate composite material and preparation method of the conductive polymethyl methacrylate composite material
  • Conductive polymethyl methacrylate composite material and preparation method of the conductive polymethyl methacrylate composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At room temperature, weigh 2.5 g of carbon nanotubes and 2.5 g of aniline in a three-necked flask, mechanically stir for 15 minutes, and sonicate for 10 minutes, then add 0.1 g of hexadecane. Another 0.1 g of sodium cetyl sulfate was added into a beaker filled with 45 g of distilled water, and mechanically stirred for 15 minutes. Next, the solution in the beaker was poured into the above three-neck flask, mechanically stirred for 15 minutes, and ultrasonically homogenized for 10 minutes. Add 6.25g ammonium persulfate / 10g aqueous solution dropwise to initiate the polymerization reaction of aniline, and stop the reaction after 4 hours to obtain a dark green solution; centrifuge, wash with ethanol and water three times respectively, and obtain a modified carbon nanotube conductive powder. Next, 0.1 g of the conductive powder was dissolved in 5 g of methyl methacrylate and 10 g of N,N-dimethylformamide, and 0.3 g of hexadecane was added, and stirred and ultrasonicated for 1...

Embodiment 2

[0043] The same reaction steps as in Example 1, the mass ratio of modified carbon nanotube powder to methyl methacrylate is 10:100.

[0044] Depend on image 3 The TEM electron micrograph shows that the modified carbon nanotubes are well dispersed in polymethyl methacrylate and cross each other to form a network structure; and no carbon nanotubes are found in the place where polymethyl methacrylate does not exist , indicating that the modified carbon nanotubes have good compatibility with polymethyl methacrylate.

[0045] Using a four-probe resistivity tester, the conductivity of the composite material was measured to be 6.96×10 -3 S / cm.

Embodiment 3

[0047] The same reaction steps as in Example 1, the mass ratio of modified carbon nanotube powder to methyl methacrylate is 14:100.

[0048] The modified carbon nanotubes are well dispersed in polymethyl methacrylate and cross each other to form a network structure.

[0049] Using a four-probe resistivity tester, the electrical conductivity of the composite material was measured to be 4.202 S / cm.

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Abstract

The invention discloses a conductive polymethyl methacrylate composite material and a preparation method of the conductive polymethyl methacrylate composite material. The conductive polymethyl methacrylate composite material is mainly prepared by mixing polymethyl methacrylate, polyaniline and carbon nano tubes in a certain weight ratio. The conductivity of the conductive polymethyl methacrylate composite material can be regulated by changing the content of the added modified carbon nano tubes; the compatibility of the modified carbon nano tubes and the polymethyl methacrylate is good, therefore the combination is firm, dissipation or losing can not be caused by friction and washing, and the durability is excellent; the modified carbon nano tubes are not apt to agglomerate and is dispersed uniformly in the polymethyl methacrylate, therefore the conductivity is remarkable and the conductive polymethyl methacrylate composite material can be used for a long time in low-temperature and low-humidity environment; and the preparation technology of the conductive polymethyl methacrylate composite material is simple and easy to control, and various plastic molding technologies and techniques are suitable to apply.

Description

technical field [0001] The invention relates to the field of material preparation, and relates to a conductive polymethyl methacrylate composite material capable of obtaining stable and durable conductive properties and a preparation method thereof. Background technique [0002] Polymethyl methacrylate sheet is commonly known as acrylic sheet, its wear resistance is close to that of aluminum, and it is resistant to corrosion by many chemicals. Acrylic sheets have good printability and spraying properties. Using appropriate printing (such as silk screen) and spraying processes can give acrylic products ideal surface decoration effects. Therefore, they are widely used in aviation, automobiles, electronics, medical, chemical, building materials, bathroom and Advertising signs and other industries are widely used, such as: cosmetic display racks, mobile phone display racks, watch display racks, glasses display racks, badges, gift boxes, signs, signs, jewelry boxes, jewelry boxes...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08K9/04C08K7/00C08K3/04H01B1/24C08G73/02C08F120/14C08F2/44
Inventor 王磊王化王若溪田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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