Nanometer titanium dioxide ceramic paste material for photocuring and preparation method thereof

A nano-titanium dioxide and light-curing technology, which is applied in the field of nano-titanium dioxide ceramic paste for light-curing and its preparation, can solve the problems of backward production technology, poor precision and performance of ceramic materials, etc., to reduce product shrinkage, improve stability, improve The effect of curing efficiency

Inactive Publication Date: 2020-04-17
NAT INST CORP OF ADDITIVE MFG XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is a traditional direct writing molding method, which does not involve the preparation of paste and light curing molding, and the production process is backward, and the precision and performance of the prepared ceramic materials are poor

Method used

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  • Nanometer titanium dioxide ceramic paste material for photocuring and preparation method thereof
  • Nanometer titanium dioxide ceramic paste material for photocuring and preparation method thereof

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preparation example Construction

[0034] A preparation method for light-curing nano-titanium dioxide ceramic paste, comprising the following steps:

[0035] Step 1), press TiO 2The powder quality is Y-glycidyl ether oxypropyl trimethoxysilane, sodium hexametaphosphate, Digo 685 wetting and dispersing agent, monomer, compatibilizer and photoinitiator; Y-glycidyl ether oxypropyl trimethoxy Silane as TiO 2 0.05% to 1.5% of powder mass, sodium hexametaphosphate is TiO 2 0.05% to 3% of the powder mass, Digo 685 wetting and dispersing agent is TiO 2 0.05% to 1.5% of the powder mass, the monomer content is TiO 2 17.0%~60.6% of powder mass, compatibilizer content is TiO 2 0.05% to 1.0% of the powder mass, and the photoinitiator content is 1.0 to 6.0 wt% of the monomer mass;

[0036] Step 2), TiO 2 Powder, compatibilizer, Y-glycidyl ether oxypropyltrimethoxysilane and sodium hexametaphosphate are mixed evenly, then added alcohol ball milling and drying to obtain prefabricated powder; specifically, TiO 2 Mix the ...

Embodiment 1

[0040] Step 1, TiO with d50=500nm 2 The mass added to the powder is TiO 2 Powder 0.5% stearic acid and mass TiO 2 Powder 2% sodium hexametaphosphate and mass TiO 2 Powder 1% Y-glycidyl etheroxypropyltrimethoxysilane is ball milled with alcohol, the ball milling time is 18 hours, the speed of ball milling is 360r / min, and then dried to obtain uniform prefabricated powder;

[0041] Step 2, take the mass as TiO 2 Tego 685 wetting and dispersing agent of powder mass 1wt%, mass is TiO 2 The monomer of powder quality 17wt%, quality is the photoinitiator of monomer quality 5wt%, and prefabricated powder is crossed 100 mesh sieves sieving process; Monomer adopts tripropylene glycol diacrylate (TPGDA), epoxy acrylate (EA ), dipentaerythritol hexaacrylate (DPHA) and trimethylolpropane triacrylate (TMPTA) are mixed in a mass ratio of 2:1:2:1; the photoinitiator adopts 2,2-dimethoxy-2-benzene Acetophenone and 2-isopropylthioxanthone are mixed in a mass ratio of 1:3 to obtain;

[004...

Embodiment 2

[0046] Step 1, TiO with d50=500nm 2 The mass added to the powder is TiO 2 Powder 0.1% stearic acid and mass TiO 2 Powder 0.06% sodium hexametaphosphate and mass TiO 2 Powder 0.06% of Y-glycidyl etheroxypropyltrimethoxysilane is ball-milled with alcohol for 19 hours at a speed of 370 r / min, and then dried to obtain a uniform prefabricated powder;

[0047] Step 2, take the mass as TiO 2 Tego 685 wetting and dispersing agent of powder mass 0.05wt%, mass is TiO 2 The monomer of powder quality 60.6wt%, quality is the photoinitiator of monomer quality 3wt%, and prefabricated powder is crossed 100 mesh sieves and sieves; Monomer adopts tripropylene glycol diacrylate (TPGDA), epoxy acrylate ( EA), dipentaerythritol hexaacrylate (DPHA) and trimethylolpropane triacrylate (TMPTA) are mixed in a mass ratio of 2.5:1:2:1; the photoinitiator is 2,2-dimethoxy-2- Phenylacetophenone and 2-isopropylthioxanthone are obtained by mixing at a mass ratio of 1:2;

[0048] Step 3, stir and mix th...

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Abstract

The invention discloses a nanometer titanium dioxide ceramic paste material for photocuring and a preparation method thereof. The nanometer titanium dioxide ceramic paste material comprises TiO2 powder, gamma-glycidyl ether oxypropyl trimethoxy silane, sodium hexametaphosphate, a Tego 685 wetting dispersant, a monomer, a compatilizer and a photoinitiator. According to the invention, the monomer with a specified content is added to serve as a dilution paste material, so viscosity effect is reduced, the paste material is prevented from being too thin, the hardness of a photocuring product is improved, and the shrinkage rate of the product is reduced; and high-functional-group resin in the monomer can increase curing depth and improve curing efficiency, and the photoinitiator is cooperativelyused with the monomer, so the action effect of the surface of paste and ultraviolet light is relatively violent, a surface layer of the paste can be initiated to undergo quick curing and to penetrateinto the paste, the stability of the reaction of the surface of the paste and the ultraviolet light is improved, the curing efficiency is further improved, and photocuring molding is facilitated.

Description

technical field [0001] The invention belongs to titanium dioxide (TiO 2 ) The technical field of paste preparation, in particular to a nano-titanium dioxide ceramic paste for photocuring and a preparation method thereof. Background technique [0002] The 3D printing of ceramic parts includes the process of configuring ceramic slurry, drawing 3D models and slicing, 3D printing molding, sintering and other processes. It can directly generate objects of any shape by adding materials based on computer graphics data without the need for original embryos and molds. , Simplify the manufacturing process of the product, shorten the resulting development cycle, improve efficiency and reduce costs. The technical characteristics of SLA stereolithography molding ceramics are: not only the cost is greatly reduced, but also the performance is stable, and it has the characteristics of high density of sterile ceramic products. Titanium dioxide is an n-type broadband semiconductor material....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/04C04B35/46C04B35/622C08F283/10C08F222/14C08F222/16
CPCC04B26/04C04B35/46C04B35/622C04B2111/00181C04B2235/6026C08F283/105C04B22/06C04B24/085C04B22/16C04B24/42C04B24/026C04B2103/408C04B24/008C08F222/16
Inventor 王克杰鲍崇高宋索成许海嫚赵纪元卢秉恒
Owner NAT INST CORP OF ADDITIVE MFG XIAN
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