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Aluminum oxide slurry used for the photocuring technique and a preparing method thereof

A kind of aluminum oxide and light-curing technology, applied in the direction of additive processing, etc., can solve the problems of inability to form complex structural parts, part design limitations, etc., and achieve the effect of effective technical support and promotion of development

Inactive Publication Date: 2018-05-15
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main methods of manufacturing alumina ceramic parts include extrusion molding, injection molding, slip casting, tape casting, and gel injection molding, etc. However, the traditional alumina forming methods are too limited in part design and cannot form complex structural parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Select Al 2 o 3 The powder is 79g, the powder particle size is 0.5μm~4μm, d50=2.5μm, the purity is 99.99%, select 0.040g MgO and 0.79g ammonium polyacrylate. Will Al 2 o 3 Put the powder, MgO and ammonium polyacrylate into a ball mill jar and stir evenly. Select Al with a diameter of 6mm 2 o 3 Grinding ball, its quality is 79g, mixes evenly with the solid powder in the ball mill jar. Set the parameters of the ball mill: the speed is 400r / min, forward and reverse operation alternately, the one-way operation time is 25min, the interval stop time is 5min, and the total operation time is 5h.

[0037] After the powder ball milling is completed, remove the balls, add 20g HDDA monomer to the powder, add 0.59g stearic acid, and finally add 0.15g benzoin dimethyl ether. Stir the above powder, monomer, compatibilizer and photoinitiator until the slurry becomes paste. Then, put it into a ball mill and mix the slurry. Slurry mixing process: rotating speed is 300r / min, forw...

Embodiment 2

[0039] Select Al 2 o 3 The powder is 79g, the particle size of the powder is 0.5μm-3μm, d50=2.5μm, the purity is 99.99%, 0.063g of MgO and 0.79g of ammonium polyacrylate are selected. Will Al 2 o 3 Put the powder, magnesium oxide and ammonium polyacrylate into a ball mill jar and stir evenly. Select Al with a diameter of 6mm 2 o 3 Grinding ball, its quality is 80g, mixes evenly with the solid powder in the ball mill jar. Set the parameters of the ball mill: the speed is 390r / min, forward and reverse operation alternately, the one-way operation time is 27min, the interval stop time is 3min, and the total operation time is 6h.

[0040] After the powder ball milling is completed, remove the balls, add 20g of HDDA monomer to the powder, add 0.79g of stearic acid, and finally add 0.20g of benzoin dimethyl ether. Stir the above powder, monomer, compatibilizer and photoinitiator until the slurry becomes paste. Then, put it into a ball mill and mix the slurry. Slurry mixing p...

Embodiment 3

[0042] Select Al 2 o 3 The powder is 79g, the particle size of the powder is 0.9μm-4μm, d50=3μm, the purity is 99.99%, 0.079g of MgO and 0.79g of ammonium polyacrylate are selected. Will Al 2 o 3 Put the powder, MgO and ammonium polyacrylate into a ball mill jar and stir evenly. Select Al with a diameter of 6mm 2 o 3 Grinding ball, its quality is 87g, mixes evenly with the solid powder in the ball mill jar. Set the parameters of the ball mill: the speed is 410r / min, forward and reverse operation alternately, the one-way operation time is 25min, the interval stop time is 5min, and the total operation time is 5h.

[0043] After the powder ball milling is completed, remove the balls, add 20g HDDA monomer to the powder, add 0.99g stearic acid, and finally add 0.25g benzoin dimethyl ether. Stir the above powder, monomer, compatibilizer and photoinitiator until the slurry becomes paste. Then, put it into a ball mill and mix the slurry. Slurry mixing process: rotating speed ...

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Abstract

Aluminum oxide slurry used for the photocuring technique is disclosed. The slurry includes Al2O3 powder, a sintering aid the mass of which is 0.05-5% of the mass of the Al2O3 powder, a dispersing agent the mass of which is 1.0-2.0% of the mass of the Al2O3 powder, a compatilizer the mass of which is 0.75-1.25% of the mass of the Al2O3 powder, a monomer the mass of which is 25-30% of the mass of the Al2O3 powder, and a photoinitiator the mass of which is 0.75-1.25% of the mass of the monomer. The slurry has a high solid content and low viscosity and is uniform. A preparing method of the slurryis also disclosed.

Description

technical field [0001] The invention belongs to the technical field of alumina slurry, relates to an alumina slurry used in photocuring technology, and also relates to a preparation method of the alumina slurry. Background technique [0002] The emergence of a large number of fast, efficient and clean flexible manufacturing technologies represented by additive manufacturing has not only improved the level of product design and manufacturing, but also effectively solved the contradiction between individualization, small batch production and manufacturing costs, and promoted the traditional The development of the high-volume manufacturing mode to the personalized manufacturing mode. Photocuring technology is a technology with high precision and high material utilization rate in additive manufacturing. Its main principle is that photosensitive resin is used as raw material. Point scanning causes the thin layer of resin in the scanned area to undergo photopolymerization to caus...

Claims

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Application Information

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IPC IPC(8): C04B35/10B33Y70/00
CPCB33Y70/00C04B35/10C04B2235/3206C04B2235/3208C04B2235/3224C04B2235/3225
Inventor 许海嫚赵晓明徐天文
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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