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Ceramic photocuring slurry and preparation method thereof

A light-curing, ceramic technology, applied in the field of materials, can solve problems such as affecting the stability of the paste and printing stability, and achieve the effects of avoiding uneven printing performance, good storage stability, and high anti-settling properties.

Active Publication Date: 2020-06-12
深圳市光韵达增材制造研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a ceramic light-curing slurry, which aims to solve the problem that the existing ceramic light-curing slurry cannot achieve a balance between viscosity and storage stability, which seriously affects the stability of the slurry and printing stability.

Method used

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  • Ceramic photocuring slurry and preparation method thereof

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preparation example Construction

[0030] The embodiment of the present invention also provides a preparation method of ceramic light-cured slurry, including:

[0031] Weigh raw materials according to the following weight percentages: 50%-80% of ceramic powder, 0.05%-0.4% of the first dispersant, 18.2%-49.55% of resin and 0.4%-2.4% of the second dispersant;

[0032] modifying the surface of the ceramic powder with the first dispersant to obtain a modified ceramic powder;

[0033] The modified ceramic powder, resin and second dispersant are mixed to obtain.

[0034] In a preferred embodiment of the present invention, the step of modifying the surface of the ceramic powder with the first dispersant to obtain a modified ceramic powder specifically includes:

[0035] The first dispersant is added into the organic solvent, and after mixing well, the ceramic powder is added, ball milled and pre-dried to obtain a modified ceramic powder.

[0036] In the embodiment of the present invention, the specific type of organ...

Embodiment 1

[0045] Measure 160g of absolute ethanol in a beaker, add 0.2g of stearic acid, ultrasonically dissolve, then pour into a ball mill jar, add zirconia grinding medium, then add 200g of alumina ceramic powder, and mill in a ball mill at 240rpm for 3h , dried at 100°C after discharge to make modified ceramic powder;

[0046] Measure 30g propoxylated neopentyl glycol diacrylate in a ball mill jar, then weigh 2.5g BYK111 dispersant, add zirconia grinding medium, then mix evenly, then add 150g modified ceramic powder, and place it in a planetary ball mill , ball milled at 180rpm for 19h, then added 2g of high molecular weight dispersant Solsperse 39000, and then ball milled at 240rpm for 3.5h to obtain the product.

Embodiment 2

[0048] Measure 160g of absolute ethanol in a beaker, add 1g of lauric acid, ultrasonically dissolve it, then pour it into a ball mill jar, add zirconia grinding media, then add 200g of alumina ceramic powder, mill it in a ball mill at 240rpm for 3h, and get out After drying at 100°C, the modified ceramic powder is made;

[0049] Measure 30g of cyclotrimethylolpropane methylal acrylate in a ball mill jar, then weigh 4.6g of Disper655 dispersant, add zirconia grinding medium, then mix evenly, then add 150g of modified ceramic powder, place on planetary In a type ball mill, ball mill at a speed of 180 rpm for 19 hours, then add 1.1 g of high molecular weight dispersant Solsperse 39000, and then ball mill at a speed of 240 rpm for 3.5 hours to obtain the product.

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Abstract

The method is suitable for the technical field of materials. The invention provides ceramic photocuring slurry and a preparation method thereof. The ceramic photocuring slurry comprises the followingraw materials in percentage by weight: 50%-80% of ceramic powder, 0.05%-0.4% of a first dispersing agent, 18.2%-49.55% of resin and 0.4%-2.4% of a second dispersing agent, wherein the surface of the ceramic powder contains hydroxyl, and the ceramic photocuring slurry is prepared by the following steps: modifying the surface of the ceramic powder by using a first dispersing agent to obtain modifiedceramic powder; and mixing the modified ceramic powder, resin and a second dispersing agent. The surface of the ceramic powder is modified through the first dispersing agent; the affinity between theceramic powder and the resin is better; and meanwhile, the second dispersing agent is matched for use, so that the storage stability of the slurry can be better, it can be guaranteed that the slurryhas enough high sedimentation resistance, and the adverse phenomena that the printing performance is not uniform due to sedimentation of the slurry in the printing process and the like are avoided.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a ceramic light-cured slurry and a preparation method thereof. Background technique [0002] Ceramic light-curing molding is a new molding method that does not rely on molds and can quickly and efficiently prepare ceramic devices with fine structures. Its principle is based on the fact that ultraviolet lasers are irradiated on the surface of ceramic slurry with photosensitive properties to stimulate free radical polymerization. Make the area scanned by the laser form a solidified layer; then the cured layer is lowered by a platform height, and the uncured slurry is re-spread on the cured layer, and the laser is irradiated and cured again, and then the platform is lowered again, and the material is laid...Through this layer by layer The method of curing and bonding finally forms a ceramic green body with a certain shape and structure, and then degreases, sinters, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/626C04B35/632C04B35/634C04B35/14C04B35/48
CPCC04B35/10C04B35/6264C04B35/632C04B35/634C04B35/14C04B35/48
Inventor 陆青肖坦顾成言肖华军
Owner 深圳市光韵达增材制造研究院
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