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Carbon particle dispersion and method for producing same

A manufacturing method and technology of dispersion liquid, which are applied in the preparation/purification of carbon, conductive materials dispersed in non-conductive inorganic materials, fibrous fillers, etc. As well as mechanical properties and other issues, to achieve the effect of good electrical conductivity and good heat resistance

Inactive Publication Date: 2014-07-09
TOPPAN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when this method is used, although the heat resistance and the compatibility with the resin are improved, the aggregation of the carbon particles cannot be sufficiently suppressed, and it is difficult to fully exert the electrical and mechanical properties of the carbon particles.

Method used

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  • Carbon particle dispersion and method for producing same

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Embodiment 1

[0075] Cellulose to which carboxyl groups were imparted by TEMPO oxidation treatment (carboxyl group content: 1.8 mmol / g) was prepared. The pH was adjusted to 10 using 1N sodium hydroxide while adding ion-exchanged water so that the total concentration of solid content as cellulose was 1%. These were processed with a stirrer (Osaka Chemical, absolute mill, 14000 rpm) for 1 hour to prepare a prepared liquid containing cellulose fibers. The obtained cellulose had a fiber width of 3 nm and a fiber length of 1.6 μm. 5 ml of the prepared liquid, 50 mg of carbon black, and 15 ml of ion-exchanged water were mixed and stirred with a stand mixer to prepare a carbon black dispersion. After stirring for one hour, the dispersion was allowed to stand. The dispersibility after the dispersion of carbon black proceeded for one hour and the dispersion stability after standing for one month were observed. Furthermore, 2 ml of the dispersion after dispersing for one hour was dropped onto a gl...

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Abstract

Provided are: a carbon particle dispersion having favorable dispersion and dispersion stability; and a method for producing the carbon particle dispersion. The dispersion is characterized by containing at least carbon particles, a fibrous polysaccharide having a carboxyl group, and a dispersion medium. The method for producing the dispersion is characterized by including, in the given order: a step for dispersing a polysaccharide having a carboxyl group in the dispersion medium to prepare a preparation containing the fibrous polysaccharide and the dispersion medium; and a step for dispersing the carbon particles in the preparation, preparing a dispersion containing the fibrous polysaccharide, the carbon particles, and the dispersion medium.

Description

technical field [0001] The present invention relates to a dispersion of carbon particles and a method for producing the same. Background technique [0002] Carbon black is industrial coal produced by thermally decomposing hydrocarbons and incompletely burning them, and has been used since ancient times as a black pigment utilizing its black color or a reinforcing material for rubber utilizing its high mechanical strength. And further developed nanoscale carbon materials such as fullerenes, carbon nanotubes, and carbon nanofibers. These carbon materials have attracted attention for their high electrical or thermal conductivity and unique optical properties, and will be used in applications including electrical conductivity Resins, materials for secondary battery electrodes, EMI shielding materials, and electronics for optoelectronic displays, as well as printing, energy, medical and other fields. [0003] However, carbon particles including carbon black have a large specific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C01B31/02C08K3/04C08L1/02C09C1/44
CPCC08B15/04C09C1/56C01P2004/61C01P2004/62C09D17/005C09D11/037C09D11/14C08K3/04C01B32/05H01B1/24C08L1/04
Inventor 西岛奈绪大森友美子木村光晴清水宏祐
Owner TOPPAN PRINTING CO LTD
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