High-solid-phase-content aluminum oxide photosensitive ceramic material and preparation method thereof

A technology of alumina ceramics and photosensitive ceramics, applied in the field of 3D printing, can solve the problems of increasing energy consumption, difficult to promote the process, unable to meet different needs and so on

Active Publication Date: 2021-03-19
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the post-processing process of the green body is very cumbersome. First, in order to make a complex and precise high-density ceramic body, the green body must be dried in a liquid drying method; secondly, vacuum is used to reduce defects such as deformation, cracking, and foaming of the green body. / The two-step degreasing method of atmosphere protection degumming and air degumming is used for degumming, which increases energy consumption and makes it difficult to promote the process
[0005] In summary, the above-mentioned composite photosen

Method used

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  • High-solid-phase-content aluminum oxide photosensitive ceramic material and preparation method thereof
  • High-solid-phase-content aluminum oxide photosensitive ceramic material and preparation method thereof
  • High-solid-phase-content aluminum oxide photosensitive ceramic material and preparation method thereof

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Example Embodiment

[0039]The present invention has a preparation method of a high-solid phase content of alumina photochane material to improve the solid content and reduce viscosity and solve the dispersion uniformity of the powder in ceramic photosensitive material, pretreatment of ceramic powder and in the powder and photosensitive pre- The mixture is mixed to add a particular dispersant; and adjust the pretreatment of the surfactant and the mass ratio of the dispersant to prepare a ceramic photosensitive material in different states of the phase content, including the following steps:

[0040] S1: Disperse the alumina ceramic powder to the surfactant dilution for modification treatment, drying, spherical milling to obtain modified ceramic powder;

[0041] The step S1 includes:

[0042] First, the surfactant (unsaturated organic acid, carboxylic acid, oleic acid, etc., preferably oleic acid) and anhydrous ethal are mixed in a ratio of from 1: 30 to 50, and then alumina powder is added. In the sol...

Example Embodiment

[0054] Example 1

[0055] (1) Alumina ceramic powder modification: 80 g of alumina powder (0.2 to 3 μm, purity of 99.9%), 0.8 g of oleic acid, 160 g of anhydrous ethanol, 1, 1 to add oleic acid and absolute ethanol first The mixture is mixed and stirred, and then alumina powder is added to the surfactant dilution, and the magnetic force is mixed at 70 ° C for 30 min; after the end, the modified powder is washed clean, dried at 80 ° C; finally put the powder ball for 1 ~ 2h, the speed is 200R / min, resulting in modified aluminum oxide powder.

[0056] (2) Preparation of photosensitive premix: an octyl acrylate is separated from octase, ethoxylated trimethylpropane trisyl acrylate 8.7 g, trihydroxymethyl propane trikacrylate 3.3 g, 1,6-hexanediol Di-acrylate 0.16 g, 2,2,4-trimethylglycol isobutyl ester 4.4 g, photoinitiator (184) 0.26 g; 1.6 g dispersant (polyester amide), polymerization agent is proportionally added In the beaker, ultrasonic dispersion of 20 min at 25 ° C, a photo...

Example Embodiment

[0058] Example 2

[0059] (1) Alumina ceramic powder modification: 800 g of alumina powder (0.2 to 3 μm particle size), 99.9%), 32 g oleic acid, 1600 g of anhydrous ethanol; first add oleic acid and anhydrous ethanol to cone bottles Uniform and stirred, then the alumina powder was added to the surfactant dilution, and the magnetic stirring was stirred at 70 ° C for 30 min; after the end, the modified powder was washed clean, dried at 80 ° C; finally put the powder ball for 1 to 2 h, and the rotational speed is 200R. / min, resulting in modified alumina powder.

[0060] (2) Preparation of photosensitive premix: 32.92 g of trihydroxymethyl propane trikacrylate, ethoxylated trimethylpropane trisyl acrylate, 32.92 g, 1,6-adiparachenegol Dikacrylate 1.64 g, 2,2,4-trimethylglycolis isobutyl ester 43.9 g, 2.6 g of Sabin double methyl ether (photoinitiator 651); 16G dispersant (polyester amide) and proportional The polymerization agent was added to the beaker, and the ultrasound was dispe...

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Abstract

The invention discloses a high-solid-phase-content aluminum oxide photosensitive ceramic material and a preparation method thereof. The preparation method comprises the following steps of: dispersingaluminum oxide ceramic powder into a surfactant dilute solution for modification treatment, and then performing drying and ball milling to obtain modified ceramic powder; mixing photosensitive resin,a plasticizer, a polymerization inhibitor, a dispersing agent and a photoinitiator to prepare a photosensitive premixed solution; and adding the modified ceramic powder into the premixed solution, fully dispersing the substance, and removing bubbles to obtain the high-solid-phase-content aluminum oxide photosensitive ceramic material. The ceramic photosensitive materials with the same solid phasecontent and different states are prepared so as to meet different requirements of various ceramic 3D printing.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a photosensitive ceramic material with high solid content of alumina and a preparation method thereof. Background technique [0002] High-performance ceramics are indispensable key materials for the development and application of modern high-end technology due to their excellent properties such as high hardness, high compressive strength, good wear resistance, high temperature resistance and acid and alkali corrosion resistance, and have been widely used in aerospace , biomedicine, machinery, electronics, energy, chemical industry and other industrial technology fields. However, with the rapid development of industrial technology and the continuous expansion of material application fields, traditional ceramic manufacturing technology cannot meet the needs of rapid manufacturing of high-end products. The 3D printing process is simple, the processing cost is low, a...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/626B33Y70/10B33Y10/00
CPCC04B35/10C04B35/62635B33Y70/10B33Y10/00
Inventor 谭鸿迪王莉刘正中施森王科王宁卢秉恒
Owner XI AN JIAOTONG UNIV
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