Method for preparing transparent ceramic through one-time forming based on photocuring 3D printing technology

A 3D printing, transparent ceramic technology, applied in ceramic molding machines, manufacturing tools, rare earth metal halides, etc., can solve problems such as the inability to meet the molding requirements of large-sized ceramic components, the limitation of light-curing 3D printing technology, and the uneven size control. Achieve the effect of small internal curing shrinkage stress, ensure printing efficiency, and reduce the possibility of deformation and cracking

Pending Publication Date: 2022-07-29
嘉兴饶稷科技有限公司
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AI Technical Summary

Benefits of technology

This patented technique uses an organopolymers called epoxyethanol ester or poly(methylacetate)) instead of traditional photo sensitive materials like silver salt). It achieves higher levels of crystal growth compared to previous methods due to its use of lower volatility solvents. Additionally, it allows for better control over thickness and shape stability when making optical cerams through stereolithography techniques. Overall this new approach provides technical benefits such as enhanced mechanical properties, simplified manufacturing processes, less expensive raw material usage, greater precision, flexibility, etc., resulting in superior performance characteristics for various applications including medical devices.

Problems solved by technology

This patents describes different techniques for making opaque cerames: casting or liquid immersion technique; crystal growth technique called LCVD (Liquified Cake Liquifusion); and sterilization/paste filling technique. Each approach presents its own challenges when producing complicated ceramically dense parts like those requiring precise dimensions and tightly fitting surfaces.

Method used

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  • Method for preparing transparent ceramic through one-time forming based on photocuring 3D printing technology
  • Method for preparing transparent ceramic through one-time forming based on photocuring 3D printing technology

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described in further detail below. It should be understood that the descriptions of the embodiments of the present invention herein are not intended to limit the protection scope of the present invention.

[0027] The method for preparing transparent ceramics by one-time molding based on photocuring 3D printing technology provided by the present invention comprises the following steps:

[0028] STEP101: Provide oxide ceramic powder raw materials, the purity of the oxide ceramic powder is greater than 99.99%;

[0029] STEP102: Provide photosensitive resin, photoinitiator, dispersant, sintering aid, and grinding ball, wherein the photosensitive resin is an ethoxylated low-viscosity compound system and the viscosity of the photosensitive resin below 25°C is not high At 1000cps, the dispersant is a polymer-based dispersant with a pigment affinity group;

[0030]STEP103: Put the oxide ceramic powder raw materials, as we...

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Abstract

The invention discloses a method for preparing transparent ceramic through one-time forming based on a photocuring 3D printing technology. The method comprises the following steps: providing an oxide ceramic powder raw material; providing photosensitive resin, a photoinitiator, a dispersing agent, a sintering aid and grinding balls; putting the oxide ceramic powder raw material, photosensitive resin, a photoinitiator, a dispersing agent, a sintering aid and grinding balls into a ball milling tank, carrying out ball milling and mixing to obtain photosensitive ceramic slurry, and carrying out stirring and ball milling on the photosensitive ceramic slurry to increase the solid phase content of the photosensitive ceramic slurry to more than 55 vol%; providing photocuring 3D printing forming equipment; spraying and cleaning the surface of the biscuit by using the alcohol and pure water; carrying out glue removal on the biscuit; and sintering the degreased green body in a vacuum atmosphere at a high temperature, and annealing to obtain the unpolished transparent ceramic component. According to the method, the high-transmittance transparent ceramic can be directly obtained through vacuum sintering, and isostatic pressing treatment is not needed.

Description

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Claims

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Application Information

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Owner 嘉兴饶稷科技有限公司
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