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Photocuring 3D printing dipping reinforced ceramic core and preparation method thereof

A ceramic core and 3D printing technology, which is applied in the direction of additive processing, can solve the problems of low strength and low bending strength of ceramic cores, and achieve the effects of improving mechanical properties, ensuring open porosity, and strengthening sintered necks

Active Publication Date: 2022-01-21
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For light-cured 3D printing ceramic cores, since ceramic cores require a high open porosity, during the process of degreasing and sintering, the bonding part (sintering neck) between ceramic particles is limited, making the ceramic type Low core strength (e.g. low flexural strength)

Method used

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  • Photocuring 3D printing dipping reinforced ceramic core and preparation method thereof
  • Photocuring 3D printing dipping reinforced ceramic core and preparation method thereof
  • Photocuring 3D printing dipping reinforced ceramic core and preparation method thereof

Examples

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preparation example Construction

[0034] The embodiment of the present invention provides a method for preparing a light-cured 3D printing impregnated reinforced ceramic core, such as figure 1 As shown, it includes the following steps:

[0035] 1) Prepare a photocurable 3D printing ceramic core slurry.

[0036] This step includes: mechanically mixing the reinforcing agent and the mineralizer to obtain a mixed powder; keeping the photocurable resin premixed solution at a temperature of 60-120° C. for heat preservation and stirring, and slowly adding the mixed powder into it while stirring, and heat preservation and stirring for 3 -4h, to obtain photocured 3D printing ceramic core slurry.

[0037] Wherein, the photocurable 3D printing ceramic core slurry includes 50-80 parts by weight of a strengthening agent, 10-30 parts by weight of a mineralizer, and 20-40 parts by weight of a photocurable resin premix. Among them, the strengthening agent is SiO 2 、Al 2 o 3 one or both of them. The particle size of the ...

Embodiment 1

[0070] This example prepares a photocurable 3D printing ceramic core, wherein the raw materials used and the parts by weight are as follows: 50 parts by weight of strengthening agent, 30 parts by weight of mineralizer, and 20 parts by weight of photocurable resin premix (wherein , in the photocurable resin premix, the volume fraction of the photosensitive resin is 80%, and the volume fraction of the diluent is 20%). The strengthening agent is SiO with a particle size of 80 μm 2 powder and 50μm Al 2 o 3 Powder (SiO2 Powder and Al 2 o 3 The mass ratio of the powder is 7:1); the mineralizer is ZrO with a particle size of 10nm 2 Powder; photosensitive resin is mixed with tricyclodecanyl dimethanol diacrylate and octadecyl acrylate with a volume ratio of 3:2; diluent is 1,6-hexanediol diacrylate; ceramic precursor The resin solution is obtained by mixing polysiloxane, polycarbosilane, and 1,6-hexanediol diacrylate at a volume ratio of 1:1:10, and the viscosity of the ceramic p...

Embodiment 2

[0083] This example prepares a photocurable 3D printing ceramic core, wherein the raw materials used and the parts by weight are as follows: 60 parts by weight of strengthening agent, 10 parts by weight of mineralizer, and 30 parts by weight of photocurable resin premix (wherein , in the photocurable resin premix, the volume fraction of the photosensitive resin is 60%, and the volume fraction of the diluent is 40%). The strengthening agent is SiO with a particle size of 50 μm 2 powder and 100μm Al 2 o 3 Powder (SiO 2 Powder and Al 2 o 3 The mass ratio of the powder is 1:8); the mineralizer is ZrSiO with a particle size of 50nm 2 Powder and K 2 O powder (ZrSiO 2 Powder and K 2 The mass ratio of O powder is 1:1); the photosensitive resin is mixed with propoxylated neopentyl glycol diacrylate and alkoxylated pentaerythritol tetraacrylate in a volume ratio of 1:3; the diluent is three Propylene glycol diacrylate; the ceramic precursor resin solution is obtained by mixing ...

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Abstract

The invention relates to a photocuring 3D printing dipping reinforced ceramic core and a preparation method thereof, and the preparation method of the photocuring 3D printing dipping reinforced ceramic core comprises the following steps of: 1) preparing a photocuring 3D printing ceramic core slurry; 2) performing photocuring 3D printing treatment on the photocuring 3D printing ceramic core slurry to obtain a ceramic core biscuit; 3) subjecting the ceramic core biscuit to degreasing and sintering treatment to obtain a photocuring 3D printing ceramic core body; 4) subjecting the photocuring 3D printing ceramic core body to infiltration treatment and drying treatment to obtain an infiltrated photocuring 3D printing ceramic core body; wherein the photocuring 3D printing ceramic core body is subjected to infiltration treatment by adopting a ceramic precursor resin solution; and 5) subjecting the photocuring 3D printing ceramic core body obtained after infiltration to re-sintering treatment, thus obtaining the photocuring 3D printing dipping reinforced ceramic core. The photocuring 3D printing dipping reinforced ceramic core has excellent strength.

Description

technical field [0001] The invention relates to the technical field of additively manufactured ceramic materials, in particular to a light-cured 3D printing impregnated reinforced ceramic core and a preparation method thereof. Background technique [0002] Aeroengines and heavy-duty gas turbines are developing toward high thrust-to-weight ratio and high power, which requires an increase in the temperature before the vortex of the engine (ie, the temperature before the turbine). In order to increase the temperature before the vortex, the existing technology has developed from the original polycrystalline blades to the current single crystal blades, and from the manufacture of solid blades to the manufacture of hollow blades. front temperature. Due to the limitation of the melting point of the metal, the improvement of the temperature resistance of alloy materials has encountered a bottleneck, and the complex air-cooled inner cavity structure of the blade has become an import...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622C04B35/632C04B35/64C04B35/10C04B35/63C04B41/84B33Y10/00B33Y70/10
CPCC04B35/14C04B35/622C04B35/632C04B35/64C04B35/10C04B35/6303C04B41/4983C04B41/84C04B41/009B33Y10/00B33Y70/10C04B2235/3217C04B2235/6026C04B2235/5436C04B2235/96C04B2235/3418C04B2235/3244C04B2235/3427C04B2235/3201C04B41/4961C04B41/46C04B41/4535
Inventor 梁静静李乔磊李金国周亦胄孙晓峰
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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