Photosensitive resin-based carbon source/silicon carbide ceramic slurry, method for preparing porous carbon/silicon carbide green body, structural member and preparation method of structural member

A technology of silicon carbide ceramics and photosensitive resin, applied in the direction of additive processing, etc., can solve the problems that it is difficult to increase the carbon content of porous carbon/silicon carbide blanks, difficult to obtain high solid content slurry, and high viscosity of the mixture, and achieve high The effect of active light curing accuracy, high molding dimensional accuracy and high solid content
CN111116205AInactive Publication Date: 2020-05-08CHINA BUILDING MATERIALS ACAD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA BUILDING MATERIALS ACAD
Publication Date
2020-05-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention mainly aims to provide a photosensitive resin-based carbon source / silicon carbide ceramic slurry, a method for preparing a porous carbon / silicon carbide green body, a reaction sintered silicon carbide structural member and a preparation method of the reaction sintered silicon carbide structural member. The photosensitive resin-based carbon source / silicon carbide ceramic slurry comprises 50-70% of photosensitive resin and 30-50% of a powder material; the powder material comprises silicon carbide powder and phenolic resin powder; and the photosensitive resin comprises a monofunctional monomer, a bifunctional monomer, a trifunctional monomer, a photoinitiator, an adhesion promoter and a polymer dispersant. The preparation method of the porous carbon / silicon carbide green body comprises the following steps: preparing the photosensitive resin-based carbon source / silicon carbide ceramic slurry, carrying out photocuring 3D printing molding, and carrying out vacuum biscuiting; and carrying out high temperature siliconizing sintering. The technical problem to be solved is that a high-density and high-strength reactive sintering silicon carbide structural member can be manufactured, the density of the structural member is greater than or equal to 2.7 g / cm<3>, and the bending strength is greater than or equal to 270.0 MPa, so that the structural member is practical.
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Description

technical field

[0001] The invention belongs to the technical field of silicon carbide ceramics manufacturing, and in particular relates to a method for preparing a photosensitive resin-based carbon source / silicon carbide ceramic slurry, a porous carbon / silicon carbide green body, a reaction sintered silicon carbide structural part and a preparation method thereof. Background technique

[0002] Silicon carbide (SiC) is a ceramic material with excellent performance, which has the advantages of high strength, high stiffness and high stability, and is widely used in aerospace, semiconductor and nuclear industries. However, silicon carbide is a covalent bond compound with a strong Si-C bond, which is difficult to process because of its high hardness; while traditional molding processes, such as grouting molding, dry pressing molding and gel injection molding, etc., are difficult to prepare high-precision and complex structures. Silicon carbide components have certain limitations...

Claims

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