Carbon powder

A technology of carbon powder and magnetic powder, which is applied in the field of carbon powder, can solve the problems of poor viscosity, inability to obtain a homogeneous mixture, inability to micronize resin, etc., and achieve good effect of resin micronization and viscosity reduction

Inactive Publication Date: 2014-05-07
GUANGDONG GUANGHAIDA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when high-pressure fluids containing dissolved resin and carbon dioxide are mixed, a uniform mixture cannot be obtained because the viscosity of the two is poor. If the viscosity of the mixture cannot be lowered, as a result, when the mixture is sprayed from the nozzle, the mixture The particles will be solidified before forming, and the resin cannot be finely granulated

Method used

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Embodiment Construction

[0014] Below in conjunction with specific embodiment, the present invention is further elaborated:

[0015] The particle forming method of the present invention comprises the following steps:

[0016] (1) Dissolve the high-pressure fluid and the pressure-deformable material in contact, and obtain a dissolved mixture with a viscosity below 100 mPa·s in a static mixer; (2) Use a nozzle to spray the dissolved mixture.

[0017] The pressure deformation material and the high pressure fluid may be formed into a premix and mixed to a suitable viscosity.

[0018] The pressure deformation material is polyester resin, phenol resin, polystyrene resin, and polylactic acid resin.

[0019] 1. The high-pressure fluid described is carbon monoxide (highly toxic, use as little as possible), carbon dioxide, a mixture of air and nitrogen, or an inert gas (such as argon), ethane (although ethane is an organic substance, it will gasify at room temperature. , it is not necessary to produce liq...

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PUM

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Abstract

The invention provides a resin particle forming formula capable of enabling resin to be better pelletized and a product preparation method. The resin particle forming formula and the product preparation method are utilized to preparation a carbon powder. The carbon powder is prepared from resin particles, a magnetic powder and a colorant, wherein the particles are made from a pressure distortion material, the pressure distortion material is contacted with a high-pressure fluid and is dissolved to obtain a dissolved-state mixture with the viscosity below 100mPa.s in a static mixture, and the dissolved-state mixture is sprayed out by utilizing a nozzle to obtain the particles. With the adoption of the resin particle forming formula and the product preparation method, as the high-pressure fluid is contacted with the pressure distortion material, and the pressure generated by the high-pressure fluid prompts the pressure distortion material to be plasticized, the high-pressure fluid and the pressure distortion material are homogeneously mixed, the viscosity is lowered, and good resin pelletizing effect is obtained.

Description

technical field [0001] The present invention relates to a carbon powder. Background technique [0002] The composition of the resin and its additives is made into carbon powder in the form of particles through the steps of melting, kneading, solidification and pulverization. The problem of poor electrification and fixation performance. [0003] In order to solve this problem, in the toner manufacturing process in recent years, the colored resin solution is generally emulsified and dispersed to form an emulsion with non-water-soluble organic solvents such as polyester resins and colorants. After discharging, colored resin particles are formed, and after agglomeration, carbon powder particles can be obtained. This method will discharge a large amount of organic solvent and is not environmentally friendly enough. Now there are also some ideas of directly using liquid carbon dioxide instead of organic solvents without using organic solvents. At this time, the dissolved po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L25/06C08L67/04C08K3/04C08J3/12
Inventor 童华东
Owner GUANGDONG GUANGHAIDA IND
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