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Production method of heat-stable ceramic mold

A ceramic mold and thermal stability technology, which is applied in the production of ceramic materials, clay products, household appliances, etc., can solve the problems of poor thermal stability, high thermal expansion coefficient, unstable size, etc., and achieve good thermal stability, low thermal expansion coefficient, Dimensional stabilization effect

Inactive Publication Date: 2019-05-07
雷小毛
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Problems solved by technology

[0007] The technical problem mainly solved by the present invention is to provide a preparation method of a thermally stable ceramic mold for the poor thermal stability and high thermal expansion coefficient of ceramic molds currently on the market, which easily lead to unstable dimensions during use.

Method used

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  • Production method of heat-stable ceramic mold

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preparation example Construction

[0027] Preparation of modified glass fiber: mix glass fiber, chloroacetic acid solution with a mass fraction of 25%, isopropanol, and sodium hydroxide solution with a mass fraction of 10% in a mass ratio of 7:3:4:1, and then put into a beaker, and blow nitrogen into the beaker until all the air is replaced. Under the protection of nitrogen, heat up to 40°C, stir and react for 30 minutes, and obtain modified glass fibers.

[0028] Preparation of modified inorganic substances: collect kaolin, put it into a pulverizer, pulverize it for 1 hour, then put it into a grinder, and grind it for 1 hour to obtain kaolin powder. The kaolin powder and the above-mentioned modified glass fiber are mixed in a mass ratio of 2 : 1 mixed to obtain the fermentation substrate, put the fermentation substrate into the fermenter, then add river bottom sludge with 7% of the fermentation substrate mass and 5% distilled water of the fermentation substrate mass to the fermenter, seal and ferment for 1 week...

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Abstract

The invention relates to a production method of a heat-stable ceramic mold, and belongs to the technical field of mold material preparation. Glass fibers used as a raw material reacts with a chloroacetic acid solution and isopropanol to form carboxymethyl cellulose, kaolin powder and the modified glass fibers are blended and fermented to obtain modified inorganic substances, crushed sorghum stalksundergo alkaline leaching treatment to decompose lignin in the sorghum stalks, nitrogen and carbon elements contained in the sorghum stalks are reacted in the high-temperature and high-pressure cooking process to generate silicon nitride, furfural produced by hydrolysis and subsequently added phenol are reacted to produce phenolic resin, the phenolic resin has good adhesion and can firmly bond all the components in the ceramic mold, and the phenolic resin and the silicon nitride are mixed together to greatly improve the high temperature resistance of the adhesive, so the produced ceramic moldhas the advantages of good heat stability, low heat expansion coefficient and broad application prospect.

Description

technical field [0001] The invention relates to a method for preparing a thermally stable ceramic mold, which belongs to the technical field of mold material preparation. Background technique [0002] Mold is an indispensable important equipment in modern industry. Molds are various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. Widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The quality of the mold directly affects the later casting the quality of. [0003] There are many types of molds, and the materials are also different. At present, the mold materials commonly used in production are mainly mold steel, cemented carbide and cermet, etc., because they a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/36C04B33/132
CPCY02P40/60
Inventor 雷小毛
Owner 雷小毛
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