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Preparation method of porous extremely small curved structure aluminum oxide ceramics based on 3D printing

A technology of alumina ceramics and extremely small curved surfaces is applied in the field of porous ceramics to achieve the effects of convenient operation, low cost and accurate precision

Inactive Publication Date: 2019-04-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is still a certain gap between China's foam ceramics and foreign countries in terms of overall technical level.

Method used

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  • Preparation method of porous extremely small curved structure aluminum oxide ceramics based on 3D printing
  • Preparation method of porous extremely small curved structure aluminum oxide ceramics based on 3D printing
  • Preparation method of porous extremely small curved structure aluminum oxide ceramics based on 3D printing

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Effect test

example 1

[0028] 1. Use Rhinoceros, Grasshopper and other 3D modeling software to design the required porous structure, and obtain the structure model with the best porosity. The specific process is as follows: input the minimum surface function to Gyrido, the input terminal of the Grasshopper battery pack, realize the digital modeling process through the battery pack, and finally output the minimum surface model by Mesh.

[0029] 2. Configure the special slurry required for printing, use photosensitive resin as the solvent, add appropriate amount of alumina powder, binder, photoinitiator, and photopolymerizer in sequence, mix thoroughly and then perform ball milling.

[0030] 3. Use the designed BESK printer to print. First, import the printed model data into the Q3DP software designed with the printer, adjust the parameters and slice the model, and then adjust the substrate to be parallel to the bottom resin tank and determine the best starting position , to ensure that the curing eff...

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Abstract

The invention relates to a preparation method of porous extremely small curved structure aluminum oxide ceramics based on 3D printing, which belongs to the field of 3D printing technology as well as porous ceramics, filtering, thermoengineering and the like. The DLP (digital photocuring ) 3D printing technology has the advantages of high forming speed, high printing model precision and low cost. The preparation method provided by the invention is implemented by virtue of the following software and devices. A three-dimensional model is designed and optimized by using rhinoceros and grasshopper,Q3DP software is guided into the model to perform the slicing, the slurry is prepared according to a specific ratio to perform the ball milling, the slurry is poured into a BESK printer resin tank tostart printing, a printed blank is degreased and sintered in a medium-sized furnace according to specific parameters, and finally the porous extremely small curved surface structure aluminum oxide ceramics with high strength, uniformity in arrangement, uniformity in aperture, stable performance and high orderliness can be obtained.

Description

technical field [0001] The present invention relates to the fields of 3D printing technology and porous ceramics, filtration, thermal engineering, etc., especially the use of DLP (digital light curing) 3D printing technology to prepare porous ceramics with high strength, uniform pore size, stable performance and high order. Background technique [0002] Since the United States invented the use of ceramic slurry such as alumina and kaolin to successfully develop foam ceramics in 1978, and used them for aluminum alloy casting and filtration, countries such as Britain, Japan, Germany, and Switzerland have competed to carry out research, with increasingly advanced production technology and technical equipment. More and more mechanization and automation are developing, and a variety of materials have been developed for ceramic foam filters for different purposes. China carried out foam ceramics research work in the early 1980s. In the past 20 years, more than a dozen scientific ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/632C04B35/634B33Y10/00B33Y70/00C04B38/00C04B35/64
CPCB33Y10/00B33Y70/00C04B35/10C04B35/622C04B35/632C04B35/634C04B35/63444C04B35/64C04B38/00C04B2235/6562C04B2235/6565C04B2235/6567C04B38/0074C04B38/0067
Inventor 陈继民帅星安
Owner BEIJING UNIV OF TECH
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