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

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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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.

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