Homogenizing preparation technique of zirconium oxide/aluminum oxide composite photo-sensitive paste based on SLA-3D (stereo lithography apparatus-three dimensional) printing

A SLA-3D, zirconia technology, applied in the direction of additive processing, can solve the problems of affecting the final quality of parts, difficulty in sintering and densification, unfavorable precision forming, etc., to achieve the advantages of sintering densification and shape accuracy, and solve the difficulty of powder dispersion. , the effect of maintaining dimensional accuracy

Active Publication Date: 2019-03-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The diameter of the ceramic particles used in this patent document is controlled in the range of 5-50um. The large particle size makes sintering and densification difficult. In order to realize the densification of 3D printed ceramic parts, a very high sintering temperature is required.
[0005] In summary, the above-mentioned composite photosensitive ceramic paste based on SLA-3D printing technology still has the following problems: the ceramic solid content in the paste is low, which is not conducive to precise forming on SLA 3D printing equipment; It is difficult to disperse evenly in the resin, which affects the final quality of the parts

Method used

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  • Homogenizing preparation technique of zirconium oxide/aluminum oxide composite photo-sensitive paste based on SLA-3D (stereo lithography apparatus-three dimensional) printing
  • Homogenizing preparation technique of zirconium oxide/aluminum oxide composite photo-sensitive paste based on SLA-3D (stereo lithography apparatus-three dimensional) printing
  • Homogenizing preparation technique of zirconium oxide/aluminum oxide composite photo-sensitive paste based on SLA-3D (stereo lithography apparatus-three dimensional) printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 As shown, a zirconia / alumina composite photosensitive paste homogenization preparation technology based on SLA-3D printing includes the following steps:

[0048] (1) Preparation of composite ceramic powder: 800g Al 2 o 3 , 200g ZrO 2 (particle size 0.02-5μm, purity 99.9%), 30g stearic acid (SA, chemically pure), 1500g ethanol (purity 99.5%) were mixed, ball milled for 10h, vacuum dried and sieved to obtain alumina / zirconia composite Ceramic powder, spare.

[0049] (2) Preparation of organic solution containing photosensitive resin: get prepolymer (ditrimethylolpropane acrylate) 35.2g, reactive diluent (propoxylated neopentyl glycol diacrylate) 140.8g, photoinitiator (1 -Hydroxycyclohexyl phenyl ketone) is 5% of the total mass of reactive diluent and prepolymer; the above photoinitiator, reactive diluent and prepolymer are placed in a beaker, and ultrasonically dispersed at 40 ° C for 2 hours to obtain a photosensitive Resin: 20 g of plasticizer (di...

Embodiment 2

[0053] A homogeneous preparation technology of zirconia / alumina composite photosensitive paste based on SLA-3D printing, including the following steps: (1) Preparation of composite ceramic powder: 500g Al 2 o 3 , 500g ZrO 2 (particle size 0.02-5μm, purity 99.9%), 10g oleic acid (OA, chemically pure), 2000g ethanol (purity 99.5%) were mixed, ball milled for 30 hours, vacuum dried and sieved to obtain alumina / zirconia composite ceramics Powder, spare.

[0054] (2) Preparation of organic solution containing photosensitive resin: get prepolymer (ethoxylated pentaerythritol tetraacrylate) 266.6g, reactive diluent (1,6-hexanediol diacrylate) 66.6g, photoinitiator (α- Hydroxyalkyl phenone) is 2% of reactive diluent and prepolymer gross mass; Above-mentioned photoinitiator, reactive diluent and prepolymer are placed in beaker, 0.5h is ultrasonically dispersed at 30 ℃, obtains photosensitive resin; Then, 1 g of plasticizer (phthalate), 5 g of polyoxyethylene polyoxypropanolamine eth...

Embodiment 3

[0058] A zirconia / alumina composite photosensitive paste homogenization preparation technology based on SLA-3D printing, comprising the following steps:

[0059] (1) Preparation of composite ceramic powder: 990g Al 2 o 3 , 100g ZrO 2 (particle size 0.02-5μm, purity 99.9%), 3g polyester polyol (chemically pure), 2000g ethanol (purity 99.5%) mixed, ball milled for 30h, dried in vacuum and sieved to prepare alumina / zirconia composite ceramics Powder, spare.

[0060] (2) Preparation of organic solution containing photosensitive resin: get prepolymer (ethoxylated trimethylolpropane triacrylate) 50.3g, reactive diluent (dipropylene glycol diacrylate) 75.6g, photoinitiator (benzoin bismethacrylate) ether) is 3% of the total mass of reactive diluent and prepolymer; the above-mentioned photoinitiator, reactive diluent and prepolymer are placed in a beaker, and are ultrasonically dispersed at 50°C for 1.5h to obtain a photosensitive resin; then plasticized Agent (phthalate) 1g, poly...

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Abstract

The invention belongs to the technical field of preparation of photo-sensitive ceramic paste, and particularly relates to a homogenizing preparation technique of a zirconium oxide / aluminum oxide composite photo-sensitive paste based on SLA-3D (stereo lithography apparatus-three dimensional) printing. The homogenizing preparation technique comprises the following steps of (1) adding a composite ceramic powder containing aluminum oxide and zirconium oxide into an ethanol solution containing a dispersant, performing ball milling and dispersing, drying, and screening, so as to obtain the zirconiumoxide / aluminum oxide composite ceramic powder; (2) mixing an active thinner, a pre-polymer and a photo-initiator to obtain a photo-sensitive premix solution; mixing the photo-sensitive premix solution and a plasticizer, so as to obtain an organic solution; (3) uniformly mixing the prepared composite ceramic powder in step (1) and the organic solution in step (2), slowly evaporating the solution,and finally obtaining the homogenizing composite ceramic photo-sensitive paste. The prepared homogenizing composite ceramic photo-sensitive paste has the advantages that the content of solid is greater than 75 wt%, and the dispersing uniformity of the composite ceramic powder in organic resin is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of preparation of photosensitive ceramic paste, in particular to a homogenization preparation technology of zirconia / alumina composite photosensitive paste based on SLA-3D printing. Background technique [0002] Ceramic SLA (Stereo Lithography Appearance) 3D printing technology based on the principle of stereolithography has the advantages of high forming quality, large size range of prepared parts, and density close to the theoretical value. It is one of the important trends in the development of ceramic 3D printing technology in the future. In the SLA-3D printing ceramic technology, the ceramic raw material is generally a mixed paste of powder solid particles and liquid photosensitive resin, diluted monomer and other additives. The composition and dispersion uniformity of the ceramic powder in the paste directly affect the performance of the final ceramic part, and play an important role in the entire 3D p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/632C04B35/634B33Y70/00
CPCB33Y70/00C04B35/10C04B35/632C04B35/63424C04B35/6346C04B35/63488C04B2235/3244C04B2235/6026
Inventor 邹斌邢宏宇刘晓艳付祥松
Owner SHANDONG UNIV
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