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Method for preparing glass through 3D printing stereolithigraphy

A photocuring molding and 3D printing technology, applied in the field of material manufacturing, can solve the problems of unguaranteed mixing uniformity and difficulty in obtaining glass with uniform composition, achieve uniform size distribution, and solve the effect of uneven doping

Pending Publication Date: 2020-04-17
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing photocuring molding technology is based on directly adding a single powder raw material into the photosensitive resin, and mechanically mixing it uniformly. For 3D printing of multi-component materials or multi-system materials, each component is evenly mixed in the system. The degree cannot be guaranteed, so it is difficult to obtain glass with uniform composition

Method used

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  • Method for preparing glass through 3D printing stereolithigraphy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation of laser gain glass, concrete method and steps are as follows:

[0035] With 34.3 g of absolute ethanol as a solvent, 35.9 g of tetraethyl orthosilicate and 19.6 g of deionized water were added and mixed uniformly, and the pH value of the solution was adjusted with nitric acid. Weigh 0.293g of erbium nitrate pentahydrate and add it, and stir evenly at 30°C to 80°C to obtain a clear solution;

[0036] Heat the solution at 60°C to 150°C, remove part of the inorganic solvent and organic solvent ethanol, and obtain a sol with a viscosity greater than 50cp, which is used as a 3D printing precursor;

[0037] Mix the sol with the organic resin (50wt%: 50wt%) and stir evenly. The organic resin is in the form of adding raw materials, which is initiated by 53.3wt% propylene glycol acrylate, 44.7wt% hydroxyethyl methacrylate and 2wt% photoinitiated Agent azodiisopropyl imidazoline (referred to as AIP, VA-061 initiator). Ultrasonic stirring is uniform, and a...

Embodiment 2

[0042] A preparation of aluminosilicate multi-component glass, the preparation method and steps are as follows:

[0043] First prepare the glass 3D printing precursor. Take 34.3g of absolute ethanol as a solvent, mix 35.9g of tetraethyl orthosilicate and 19.8g of deionized water evenly, weigh 3.325g of AlCl 3 Add it into the solution, add dropwise ethylenediamine to adjust the pH value of the solution to be alkaline, and prepare a clear solution;

[0044]Heat the solution at 30°C to 120°C to remove most of the solvent to obtain a sol with a viscosity greater than 50cp;

[0045] The sol is mixed with resin (45wt%: 55wt%), and the resin is added in the form of raw materials, consisting of 50wt% 1,6 ethylene glycol diacrylate, 47wt% bisphenol A epoxy acrylate polyester acrylate and 3wt% % of azobisisobutyronitrile (AIBN) composition. Vibrate and stir to obtain a multi-component glass 3D printing paste with a viscosity of 30cp-100cp;

[0046] Pour the glass 3D printing slurry ...

Embodiment 3

[0050] A preparation of fluorescent borosilicate glass, the preparation method and steps are as follows:

[0051] Take 31.7g of absolute ethanol as a solvent, take 26.1g of ethyl orthosilicate, 11.3g of tributyl borate and 18.8g of deionized water and mix evenly, weigh 0.759g of cerium trichloride heptahydrate and add it to the solution, add ethyl orthosilicate dropwise Diamine adjusts the pH value of the solution to be alkaline, and prepares a clear solution;

[0052] Heat the solution at 30° C. to 120° C. to remove part of the solvent to obtain a sol with a viscosity greater than 50 cp.

[0053] The sol and resin are evenly mixed, and the glass preform is obtained by 3D printing according to the set three-dimensional graphics; the porous glass green embryo is obtained after degreasing and removing the organic resin at a low temperature of 100 ° C to 500 ° C; the transparent and dense luminous glass is obtained by sintering at a high temperature of 1175 ° C. Other concrete p...

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Abstract

The invention discloses a method for preparing glass through 3D printing stereolithigraphy, belonging to the technical field of material manufacturing. The method comprises the following steps: mixingorganic molecules containing silicon elements, an organic solvent, deionized water and salt doped with metal ions for a reaction to obtain one or more metal ion-doped three-dimensional network framework solutions containing silicon-oxygen and the like; applying light or heat for further hydrolysis and condensation and carrying out aging to obtain a precursor of an inorganic component material for3D printing; then mixing the precursor with organic resin to prepare mixed slurry for 3D printing; carrying out printing, and then conducting drying and low-temperature degreasing treatment to removeorganic resin in a prefabricated glass body and to form a porous green glass body with nanopores; and carrying out sintering at high temperature to obtain a compact and transparent glass sample withuniform components. According to the invention, the uniformity of the glass sample reaches an atomic level, and the problem of non-uniform doping in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of material manufacturing, and relates to a method for preparing glasses with different components through 3D printing photocuring. Background technique [0002] Glass is the foundation and an important part of the optoelectronic technology industry. It is widely used in optical instruments, optical communications, laser devices and other fields, mainly depending on its excellent physical and chemical properties such as light transmission, mechanical properties and electrical insulation. In the preparation of glass, the traditional high-temperature melting method is very easy to introduce impurities, resulting in extremely high loss of glass, thereby affecting its optical properties, and its shape is limited by the molding method and molding mold, which often requires subsequent processing and increases the production cost; Other emerging preparation methods such as PCVD (Plasma Vapor Deposition) have extrem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/06C03C3/06C03C3/062C03C3/064C03C3/076C03C3/083C03C3/089C03C3/095B33Y70/00B33Y80/00
CPCC03B19/06C03C3/095C03C3/062C03C3/06C03C3/083C03C3/089C03C3/064C03C3/068C03C3/076B33Y70/00B33Y80/00C03B2201/34C03B2201/32C03B2201/30C03B2201/10C03C2201/10C03C2201/3423C03C2201/3476C03C2203/20C03C2203/52
Inventor 王璞王锦航郑保罗刘宇
Owner BEIJING UNIV OF TECH
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