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Composite modified conductive engineering plastic and preparation method thereof

A technology of engineering plastics and composite modification, applied in conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of unstable volume resistivity, poor mechanical properties, rough surface, etc., to improve mechanical properties and gloss. , The effect of enhancing conductivity and improving dispersibility

Inactive Publication Date: 2011-02-16
SHENZHEN HALCYON NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, although the carbon black-filled nylon conductive polymer commonly used at present can achieve a certain degree of conductivity, its volume resistivity is unstable, its mechanical properties are poor, and its surface is relatively rough, which is prone to "powder falling" phenomenon, which limits its application. scope

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In terms of parts by weight, weigh 0.5 parts of dry carbon nanotubes, 5 parts of dry micron-sized conductive carbon powder, and 94.5 parts of dry nylon, and add the above three components to an extrusion temperature of 150 ° C, extrusion pressure In a 200Mpa extruder, and blended for 10 minutes at a shear rate of 20 rpm, the extrudate was cooled slowly, and pelletized after cooling and molding.

Embodiment 2

[0049] In terms of parts by weight, weigh 5 parts of dry nano-zinc oxide, 25 parts of dry micron-sized conductive carbon powder, and 70 parts of dry nylon, and add the above three components until the extrusion temperature is 180 ° C and the extrusion pressure is In a 300Mpa extruder, and blended for 3 minutes at a shear rate of 50 rpm, the extrudate was cooled slowly, and pelletized after cooling and molding.

Embodiment 3

[0051] In terms of parts by weight, weigh 5 parts of dry micron-sized conductive carbon powder and 6 parts of alkyd resin monomer, stir evenly, initiate resin monomer polymerization, and obtain conductive carbon powder originally filled with conductive carbon powder dispersed in polymerization The composite polymer material is dried and granulated to obtain conductive carbon powder / resin masterbatch. The prepared conductive carbon powder / resin masterbatch contains 5 parts by weight of resin.

[0052] The alkyd resin monomer includes diethylene glycol, glycerin, trimethylolpropane, adipic acid and soy oil, and the contents of each component are as follows in parts by weight: adipic acid: 80%; glycerin: 8%; Trimethylolpropane: 5%; Soybean Acid: 4%; Diethylene Glycol: 3%.

[0053] Add the conductive carbon powder / resin masterbatch obtained from the above reaction and 0.5 parts of dry carbon nanotubes and nano-zinc oxide mixture into 89.5 parts of dry nylon, mix the above three c...

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Abstract

The invention relates to a composite modified conductive engineering plastic of carbon nanotubes or nano-ZnO and conductive carbon powder and a preparation method thereof. The engineering plastic comprises the following components by weight percent: 0.5%-5% of nanoscale conductive material, 5%-25% of micro-scale conductive carbon powder and the balance plastic. In the method of the invention, conductive carbon powder is dispersed in the resin monomer to be polymerized, then polymerization is initiated to obtain conductive carbon powder / resin master batch; by adopting the in-situ dispersion polymerization technology, conductive carbon powder is easier to disperse in the micromolecular organic monomer and polymerization is initiated on the basis of good dispersion to obtain the composite macromolecular material which is filled with conductive carbon powder and has good distribution performance. The prepared conductive carbon powder / resin master batch can be conveniently mixed with plastic.

Description

【Technical field】 [0001] The invention belongs to the technical field of polymer engineering materials, and relates to a composite modified conductive engineering plastic and a preparation method thereof, in particular to a composite modified conductive engineering plastic of carbon nanotubes or nanometer zinc oxide and conductive carbon powder and a preparation method thereof. 【Background technique】 [0002] The electronic communication industry is a very important high-tech industry in the country, which is closely related to national security and people's lives. Polymer materials are closely related to the electronic communication industry. Electronic communication products not only require a large number of polymer material insulators, but also widely use conductive polymer materials. Conductive polymer materials can shield computers, communication network equipment, printers, digitizers and other equipment from electromagnetic waves to prevent information leakage. In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/04C08L67/08C08K13/06C08G63/672C08L101/00C08L77/00B29B9/06C08K9/04B29C47/92C08K3/22H01B1/24B29C48/92
CPCB29C48/04B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 胡军辉赖华林张贵州陈军曾伟华
Owner SHENZHEN HALCYON NEW MATERIALS
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