Thermosetting bonding based ceramic additive production method and equipment

A ceramic and bonding technology, which is applied in the field of ceramic additive manufacturing and equipment based on thermosetting bonding, can solve problems such as the inability to realize the additive manufacturing of silicon carbide ceramic powder, hindering the solid phase crystallization reaction of ceramic particles, and weakening the strength of the material. , to achieve wide applicability, increase strength, and reduce raw material costs

Pending Publication Date: 2019-09-17
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this invention is that it introduces impurity elements different from the composition of ceramic particles, such as sodium, fluorine, phosphorus, iron, etc., which hinders the solid-phase crystallization reaction of ceramic particles, thereby weakening the strength of the material, or causing other performance problems. decline
At the same time, since these technologies need to use ultraviolet radiation to cure the adhesive, it is impossible to realize the additive manufacturing of absorbing materials such as silicon carbide or colored ceramic powders.

Method used

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  • Thermosetting bonding based ceramic additive production method and equipment
  • Thermosetting bonding based ceramic additive production method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of additive manufacturing method of alumina ceramics

[0061] 1) Model design and layering: Design the part model that needs to be printed, use computer software to layer, calculate the area that needs to be bonded for each layer, and generate a printer control program that includes the injection path of component B.

[0062] 2) Preparation of alumina ceramic powder raw material: select alumina ceramic powder with a particle diameter of 60 nm as the raw material.

[0063] 3) Determination of the dosage ratio of component A slurry: using bisphenol F glycidyl ether (BFDGE) as the epoxy resin monomer, it is determined through experiments that in the component A slurry, the epoxy resin monomer and alumina ceramic powder The mass ratio is 1:3.

[0064] 4) Use diethyltoluenediamine (DETDA) for component B, adjust the injection parameters of component B: the compressed gas pressure is 0.23MPa, the single compressed gas injection time is 110ms, component B is heated in ...

Embodiment 2

[0069] A kind of additive manufacturing method of silicon carbide ceramics

[0070] 1) model design and stratification: same as embodiment 1;

[0071] 2) Preparation of silicon carbide ceramic powder raw materials: mix β-SiC powder with a particle size of 100nm and trace C and B powders in a ratio of 100:3:1 as raw materials;

[0072] 3) Determination of the dosage ratio of component A slurry: use bisphenol F glycidyl ether (BFDGE) as the epoxy resin monomer, and determine through experiments, in the component A slurry, epoxy resin monomer and silicon carbide ceramic powder raw materials (The mixture prepared by step 2) has a mass ratio of 1:2.5.

[0073] 4) Use diethyltoluenediamine (DETDA) for component B, adjust the injection parameters of component B: the compressed gas pressure is 0.20MPa, the single compressed gas injection time is 110ms, component B is heated in the storage syringe The temperature is 80°C, and the diameter of a single droplet of component B ejected ac...

Embodiment 3

[0078] A kind of additive manufacturing method of ferrite ceramics

[0079] 1) The model design and layering, the calculation ratio of the adhesive, and the printing process can refer to Examples 1 and 2.

[0080] 2) Preparation of ferrite ceramic powder raw material: Manganese-zinc ferrite powder with brand PC40 was used as raw material.

[0081] 3) According to the aforementioned method, after the ceramic green body is printed and cleaned, the ceramic green body is placed in a sintering furnace, heated to 140°C, and kept for 3 hours to remove the moisture contained in it; then heated to 600°C in an air environment ℃, keep warm for 6 hours to remove the binder components; finally, heat to 1200 ℃ in an inert gas environment, keep warm for 5 hours, so that the manganese zinc ferrite powder is sintered into finished solid ceramic parts.

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Abstract

The invention relates to a thermosetting bonding based ceramic additive production method. The method comprises the steps: layering a mold for ceramic parts required to be printed, determining an area required to be bonded of each layer, and creating a printer control program; uniformly mixing an epoxy resin monomer with ceramic powder to form slurry with relatively good fluidity as component A slurry, wherein for a consumption ratio of the epoxy resin monomer and the ceramic powder, the proportion of the ceramic powder in the component A slurry should be as high as possible on the premise of meeting the requirements on fluidity so as to achieve that a final ceramic finished product is high in compactness and low in shrinking percentage; laying a layer of component A slurry on a working tray; spraying a hardener of epoxy resin as a component B to the area required to be bonded of the corresponding layer with a sprayer according to the program; heating the ceramic powder of the corresponding layer with a heating device; carrying out printing layer by layer until a complete ceramic green body is formed; carrying out washing clean; and carrying out high-temperature calcination. The invention simultaneously provides equipment achieving the method, i.e., a ceramic powder bonding printer.

Description

technical field [0001] The present invention relates to a molding method of ceramic materials, in particular to a ceramic material additive manufacturing method based on additive manufacturing technology, that is, three-dimensional article manufacturing technology. And on this basis, it relates to a device that applies the forming method to realize additive manufacturing of ceramic materials. Background technique [0002] Ceramic materials have the advantages of low density, high hardness, high heat resistance, high wear resistance, etc., and have excellent application prospects in a wide range of industrial fields, such as heat insulation, heat-resistant materials, ceramic bearings, etc. The traditional method of molding ceramic materials is to put ceramic raw materials, usually powder or slurry, into a mold for high-temperature sintering to form a blank, and then use mechanical cutting and grinding methods for finishing to obtain the final product. However, due to the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622B33Y10/00B33Y50/00B33Y70/00C04B35/10C04B35/565C04B35/38B28B1/00
CPCC04B35/622B33Y10/00B33Y50/00B33Y70/00C04B35/10C04B35/565C04B35/2658B28B1/00C04B2235/3272C04B2235/3284C04B2235/3262C04B2235/3418C04B2235/3244C04B2235/3206C04B2235/3225C04B2235/3873
Inventor 林彬王皓吉魏金花
Owner TIANJIN UNIV
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