A kind of gel centrifugal molding method of ceramic embryo body

A ceramic embryo body and centrifugal molding technology, which is applied to ceramic molding machines, auxiliary molding equipment, manufacturing tools, etc., can solve the problems of difficult distribution of ceramic particles, low ceramic density, and plain embryo cracks, etc., to achieve simple molding process, High material utilization, no cracks inside the effect

Active Publication Date: 2017-07-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that ceramic particles are difficult to distribute evenly in the existing ceramic green body molding method, and agglomeration is easy to occur, and the plain green body has cracks and a small amount of holes left, resulting in low density of ceramics after sintering, and provides A kind of gel centrifugal molding method of ceramic embryo body

Method used

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  • A kind of gel centrifugal molding method of ceramic embryo body
  • A kind of gel centrifugal molding method of ceramic embryo body
  • A kind of gel centrifugal molding method of ceramic embryo body

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Experimental program
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specific Embodiment approach 1

[0026] Specific Embodiment 1: This embodiment is a gel centrifugal molding method for ceramic embryos, which is specifically completed according to the following steps:

[0027] 1. Prepare a mixed solution: dissolve the organic monomer and crosslinking agent in deionized water, add a dispersant, and then perform ultrasonic treatment to obtain a mixed solution;

[0028] The mass ratio of the organic monomer described in step 1 to the crosslinking agent is 1:(0.08~0.12);

[0029] The mass ratio of organic monomer and deionized water described in step 1 is 1:(10~100);

[0030] The mass ratio of dispersant described in step 1 and deionized water is 1:(50~1000);

[0031] 2. Preparation of slurry: Add ceramic powder to the mixed solution obtained in step 1, and then ball mill for 8h-24h at a ball-to-material ratio of 3:1 and a ball milling speed of 190r / min-260r / min to obtain a slurry;

[0032] The mass ratio of the ceramic powder described in step 2 to the mixed solution obtained...

specific Embodiment approach 2

[0040] Embodiment 2: The differences between this embodiment and Embodiment 1 are: the power of the ultrasonic treatment in step 1 is 50W-200W, and the ultrasonic time is 5min-20min. Others are the same as the first embodiment.

specific Embodiment approach 3

[0041] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the particle size of the ceramic powder in Step 2 is 0.1 μm˜10 μm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a gel centrifugation shaping method of a ceramic embryo body, and aims at solving the problems that ceramic particles are difficultly distributed evenly and easily conglomerated, cracks and a small quantity of holes are formed in basic embryos, and therefore compactness of ceramic after being sintered is low in an existing ceramic embryo body shaping method. The gel centrifugation shaping method of the ceramic embryo body includes: firstly, dissolving organic monomers and cross linking agents in deionized water, and then adding dispersant, performing ultrasonic treatment, adding ceramic powder, performing ball milling, adding an initiating agent, performing stirring and centrifugation, and then performing solidification so as to obtain a solidified embryo body; releasing the solidified embryo body from a mold, and then drying the solidified embryo body so as to obtain the ceramic embryo body. By using the gel centrifugation shaping method of the ceramic embryo body, compactness of the obtained ceramic embryo body can reach 55%-80%, and basic embryos are even in microstructure, compact in stacking, and not provided with the cracks or inside defects. Simultaneously, the gel centrifugation shaping method of the ceramic embryo body is high in usage rate, and simple in forming process and suitable for industrialization, and can be used to obtain the ceramic embryo body.

Description

technical field [0001] The invention relates to a molding method of a ceramic blank. Background technique [0002] Ceramic materials have excellent properties such as high strength and high temperature resistance, and are becoming an excellent structural material and functional material, especially nano-ceramics have excellent strength and toughness, and have broad development prospects. Ceramic particles, especially nano-ceramics, have small particle size and large surface energy. It is difficult to prepare high-density, less-defective, and uniform-structured ceramic blanks. High-density and uniform-structured blanks can be sintered and densified at low temperatures. , which improves the performance of ceramics while reducing equipment requirements. Therefore, it has become a key technology to prepare high-density, less-defective, uniform-structured blank bodies. [0003] In order to solve the above problems, the developed ceramic blank molding technologies mainly include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/20
CPCB28B1/20B28B17/026C04B35/624C04B35/6303C04B35/632C04B35/63424C04B35/63468C04B35/63488
Inventor 邓贤柱胡平张东洋
Owner HARBIN INST OF TECH
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