Prepn process of nanometer carbon black modified conductive plastic

A technology of conductive plastic and nano-carbon black, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of material performance being greatly affected, and achieve the effects of avoiding a large number of agglomerations, reducing stress concentration points, and improving performance

Inactive Publication Date: 2007-11-07
广州迈迪瑞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

However, its finished products are limited to black, and have a great impact on the material properties, requiring supporting modification technology

Method used

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  • Prepn process of nanometer carbon black modified conductive plastic
  • Prepn process of nanometer carbon black modified conductive plastic

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Effect test

Embodiment 1

[0024] Embodiment one: the preparation of the conductive plastic modified by nano-carbon black of the present invention

[0025] The preparation method of a kind of nano carbon black modified conductive plastic of the present invention, as shown in Figure 2, comprises the following steps:

[0026] A, select 30nm nano-scale carbon black as the conductive carrier, the treatment method is as follows: get 7.5% by weight of powdery carbon black and 7.5% by weight of columnar carbon black in a high-speed mixer, atomize with an atomizer Add the coupling agent of 0.5% by weight and the dispersing oil of 0.5% by weight, the coupling agent and the dispersing oil are all diluted with white mineral oil of 9% by weight, mixed for 15 minutes to obtain the processed carbon black ;

[0027] B. In a high-speed mixer, add 25% PE powder by weight, add the processed carbon black obtained in step A under high-speed stirring, and mix the two for 10 minutes; mix the powdery material in the extruder...

Embodiment 2

[0032] Embodiment two, the improved method of adjusting material softness and hardness

[0033] According to the requirements of different products, in the step C described in Example 1, GPPS, that is, general-purpose polystyrene, can also be added when mixing. The amount added is generally about 20%, which is used to adjust the softness and hardness of the material. If the material is soft, it can be adjusted to the required level with GPPS.

[0034] Test items

[0035] It can be seen that the conductive plastic obtained according to the preparation method of the present invention is comparable to similar products of Capote Corporation in the United States in terms of melt index, density, elongation, bending strength, heat distortion temperature, softening point, Rockwell hardness, etc. Ratio, the above properties are all close, and better than the products of domestic manufacturers; but the conductivity is better than (that is, the surface resistance is less than)...

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Abstract

The present invention relates to preparation process of nanometer carbon black modified conductive plastic. The preparation process includes the following steps: selecting nanometer carbon black powder of 30 nm level size as the conducting carrier, treating carbon black with coupling agent and dispersing oil, mixing the treated carbon black with polyethylene powder, extruding the mixture in an extruder to obtain conducting mother material containing carbon black in 30 %, mixing the conducting mother material with HIPS and SBS, extruding the mixture in an extruder to pelletize, stoving and packing. The nanometer carbon black modified conductive plastic has high conducting performance and good dispersing effect.

Description

technical field [0001] The invention belongs to the field of new materials and relates to a preparation method of conductive plastics. Background technique [0002] As we all know, plastic is composed of many disordered macromolecules. After electrification, when the current increases, a messy network will be formed inside the plastic, and it will stop conducting electricity immediately. Not only that, plastics are often used as insulating substrates, and the wide application of plastics in electrical and electronic is based on this. However, in the mid-1980s, scientists discovered that certain structures of plastics have semiconducting properties and can also transmit electric current. Conductive carriers are added to the plastic, and when filled to a certain extent, the plastic is also conductive. Conductive plastics have the density of plastics, the conductivity of metals and the processability of plastics, as well as the chemical and electrochemical properties that met...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/00B29C47/40H01B1/24C08L53/02C08L25/06
Inventor 田小明
Owner 广州迈迪瑞新材料科技有限公司
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