Three-dimensional photocuring 3D printing high-density high-strength lunar soil ceramic and preparation method thereof

A stereo light curing and 3D printing technology, applied in the direction of additive processing, can solve the problems of low density and strength of simulated lunar soil ceramics, achieve low density and strength, improve mechanical strength, improve dispersion and The effect of rheology

Active Publication Date: 2021-12-21
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the low density and strength of 3D printing simulated lunar soil ceramics after sintering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides stereolithography 3D printing high-density and high-strength lunar soil ceramics and its preparation method, specifically as follows:

[0029] 1. Mix 100 parts by mass of simulated lunar soil powder, 0.3 parts by mass of magnesia, 0.7 parts by mass of sodium oxide, 100 parts by mass of absolute ethanol and 100 parts by mass of zirconia grinding balls into the ball milling tank, at 250r / min Ball milled for 2 hours, dried, and then sieved in a 100-mesh sieve to obtain simulated lunar soil powder mixed with flux.

[0030] 2. Add 7 parts by mass of silane coupling agent (KH570) to 30 parts by mass of ethanol aqueous solution (mass ratio of deionized water and absolute ethanol: 1:10), adjust the pH of the ethanol aqueous solution to 4-5 with glacial acetic acid , and then heated to 60° C. and mechanically stirred for 4 hours to obtain a hydrolyzed solution of the silane coupling agent. Mix the hydrolyzed solution of silane coupling agent with 100 pa...

Embodiment 2

[0034] This embodiment provides stereolithography 3D printing high-density and high-strength lunar soil ceramics and its preparation method, specifically as follows:

[0035] 1. Mix 100 parts by mass of simulated lunar soil powder, 5 parts by mass of potassium oxide, 10 parts by mass of calcium oxide, 100 parts by mass of absolute ethanol and 100 parts by mass of zirconia grinding balls into the ball milling tank, at 250r / min Ball milled for 2 hours, dried, and then sieved in a 100-mesh sieve to obtain simulated lunar soil powder mixed with flux.

[0036] 2. Add 7 parts by mass of silane coupling agent (KH570) to 30 parts by mass of ethanol aqueous solution (mass ratio of deionized water and absolute ethanol: 1:10), adjust the pH of ethanol aqueous solution to 4-5 with glacial acetic acid, Then heated to 60° C. and mechanically stirred for 4 hours to obtain a hydrolyzed solution of the silane coupling agent. Mix the hydrolyzed solution of silane coupling agent with 100 parts by...

Embodiment 3

[0040] This embodiment provides stereolithography 3D printing high-density and high-strength lunar soil ceramics and its preparation method, specifically as follows:

[0041] 1. Mix 100 mass parts of simulated lunar soil powder, 2 mass parts of potassium oxide, 3 mass parts of calcium oxide, 100 mass parts of absolute ethanol and 100 mass parts of zirconia grinding balls into the ball mill jar, / min ball milled for 2 hours, dried, and then sieved in a 100-mesh sieve to obtain simulated lunar soil powder mixed with flux.

[0042] 2 Add 4 parts by mass of stearic acid, 100 parts by mass of simulated lunar soil powder mixed with flux, 100 parts by mass of absolute ethanol and 100 parts by mass of zirconia grinding balls into a ball mill jar for mixing and ball milling for 4 hours, and then Dry and sieve to obtain the modified simulated lunar soil powder mixed with flux.

[0043] 3. Mix 70 parts by mass of modified simulated lunar soil powder mixed with flux, 0.7 parts by mass of...

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Abstract

The invention discloses three-dimensional photocuring 3D printing high-density high-strength lunar soil ceramic and a preparation method, and relates to the technical field of aerospace 3D ceramics. According to the preparation method of the three-dimensional photocuring 3D printing high-density high-strength lunar soil ceramic, simulated lunar soil is treated with a fluxing agent in advance, so that melting of some components in the lunar soil is promoted, and liquid-phase sintering of a green body is promoted; and then any one of a silane coupling agent, stearic acid or oleic acid is further used for modifying the premixed powder to obtain modified simulated lunar soil powder, so that the dispersity and rheological property of slurry are improved, the mechanical strength of a lunar soil sintered body can be effectively improved, and the problem that the density and strength of the simulated lunar soil after sintering are low is solved.

Description

technical field [0001] The invention relates to the technical field of aerospace 3D ceramics, in particular to a three-dimensional light-cured 3D printed lunar soil ceramic with high density and high strength and a preparation method. Background technique [0002] The moon is the closest celestial body in the solar system and the only natural satellite to the earth. It is rich in mineral resources and is a relay station and outpost for human beings to go further into space. To this end, various countries plan to establish scientific research bases and human settlements on the moon, but the cost of transporting building materials from the earth to the moon is extremely expensive and inefficient. Researchers envisage using the natural soil on the moon's surface as a raw material for building a lunar base, and additive manufacturing technology is currently one of the most promising methods for in-situ manufacturing on the moon. However, there are very few real lunar soils curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/622C04B35/626C04B35/632C04B35/634C04B35/64B33Y10/00B33Y70/10
CPCC04B35/01C04B35/622C04B35/62605C04B35/632C04B35/64C04B35/63456C04B35/63452B33Y70/10B33Y10/00C04B2235/6026C04B2235/77C04B2235/96
Inventor 伍尚华陈浩明聂光临黎业华
Owner GUANGDONG UNIV OF TECH
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