A preparation method of 3D printing rapid prototyping nano zirconia material

A nano-zirconia, fast technology, applied in ceramic molding machines, manufacturing tools, etc., can solve the problems that restrict the promotion and popularization of 3DP molding technology, the molding accuracy of small parts is not high enough, and thin-walled parts are not easy to shape, etc., and achieve particle size distribution. The effect of narrow range, easy industrial production and low production cost

Inactive Publication Date: 2016-01-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3D printing technologies include 3DP technology, FDM fusion lamination molding technology, SLA stereolithography technology, SLS selective laser sintering technology, DLP laser molding technology and UV ultraviolet molding technology. The most widely used is FDM3D printing technology. This technology can be used in the home. It is easy to operate and the materials used are generally available. The products printed by this technology are also close to our daily necessities. The materials used are mainly environmentally friendly polymer materials. Such as: PLA, PCLPHAPBSPA ABSPCPS POM PVC, because this technology is generally printed on the desktop, the smell produced by the molten polymer material or the harmful substances produced by decomposition directly contact with our people, which is likely to cause safety problems
[0009] Due to the large particle size of the 3DP rapid prototyping material powder, it is difficult to form thin-walled parts, the forming accuracy of tiny parts is not high enough, and the surface has a relatively rough feeling; in addition, because the binder is not strong enough, there is a low strength of the formed part Not enough
In addition, the 3DP molding materials currently sold in the market are basically monopolized by foreign companies, and the price is high, which seriously restricts the promotion and popularization of 3DP molding technology in my country.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030](1) Nano zirconia pretreatment: In the grinder, add 17mL of 3-aminopropyltriethoxysilane and 83g of nano zirconia, turn on the grinder at 600 rpm, grind at room temperature 3h, obtain pretreatment nano zirconium dioxide;

[0031] (2) Preparation of polymer adhesive: In the reaction, add 72mL of tetrahydrofuran and 10mL of n-dodecanethiol, mix well, and when the temperature rises to 40±3°C, start to drop 31mL of methyl acrylate at a speed of 8 drops / min A mixed solution of ester and 0.5g of azobisisobutyronitrile, after the dropwise addition, raise the temperature to 60±2°C, react at constant temperature for 7 hours, stop heating and stirring, pour the mixed solution into deionized water to purify the polymer , after the mixed solution was allowed to stand for stratification, the supernatant was poured off, and the lower liquid was distilled to remove residual deionized water and solvent tetrahydrofuran to obtain a light yellow viscous liquid as a polymer adhesive.

[00...

Embodiment 2

[0034] (1) Nano zirconia pretreatment: In the grinder, add 10mL of 3-aminopropyltriethoxysilane and 90g of nano zirconia, turn on the grinder at 600 rpm, grind at room temperature 6h, obtain pretreatment nanometer zirconia;

[0035] (2) Preparation of polymer adhesive: In the reaction, add 62mL of tetrahydrofuran and 14mL of n-dodecanethiol, mix well, and when the temperature rises to 40±3°C, start to drop 35mL of methyl acrylate at a speed of 10 drops / min A mixed solution of ester and 1.0g of azobisisobutyronitrile, after the dropwise addition, raise the temperature to 60±2°C, react at constant temperature for 6h, stop heating and stirring, pour the mixed solution into deionized water to purify the polymer , after the mixed solution was allowed to stand for stratification, the supernatant was poured off, and the lower liquid was distilled to remove residual deionized water and solvent tetrahydrofuran to obtain a light yellow viscous liquid as a polymer adhesive.

[0036] (3)...

Embodiment 3

[0038] (1) Nano zirconia pretreatment: In the grinder, add 15mL of 3-aminopropyltriethoxysilane and 85g of nano zirconia, turn on the grinder at 600 rpm, grind at room temperature 5h, obtain pretreatment nano zirconium dioxide;

[0039] (2) Preparation of polymer adhesive: In the reaction, add 81mL of tetrahydrofuran and 5mL of n-dodecanethiol, mix well, and when the temperature rises to 40±3°C, start to drop 25mL of methyl acrylate at a speed of 5 drops / min A mixed solution of ester and 1.0g of azobisisobutyronitrile, after the dropwise addition, raise the temperature to 60±2°C, react at constant temperature for 8 hours, stop heating and stirring, pour the mixed solution into deionized water to purify the polymer , after the mixed solution was allowed to stand for stratification, the supernatant was poured off, and the lower liquid was distilled to remove residual deionized water and solvent tetrahydrofuran to obtain a light yellow viscous liquid as a polymer adhesive.

[00...

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Abstract

The invention discloses a preparation method of a rapid-prototyping nano-zirconium dioxide material for 3D printing. The invention is characterized in that the method contains the following steps: 1, nano-zirconium dioxide is pretreated by the use of 3-aminopropyltriethoxysilane; 2, tetrahydrofuran, dodecyl mercaptan methacrylate and azodiisobutyronitrile are used to synthesize a polymer adhesive; and 3, 56-72wt% of acetone is added, 21-35% of the pretreated nano-zirconium dioxide is added, 2-10% of the polymer adhesive is added, the total weight of the three components is 100%, intense agitation is carried out at room temperature, a reaction is carried out for 2-4 h, and spray drying is conducted to obtain the rapid-prototyping nano-zirconium dioxide material. The material is directly prototyped at the temperature of 120-150 DEG C and at the pressure of 2-8 MPa. The preparation method provided by the invention has advantages of simple preparation technology, easily-controlled condition and low production cost, and is easy for industrial production. Various shapes of components, thin-wall minimal parts, porcelain teeth and the like can be molded through a 3D printer.

Description

technical field [0001] The invention relates to a preparation method for 3D printing rapid prototyping powder material, which belongs to the field of rapid prototyping materials, in particular to a preparation method and molding of a 3D printing rapid prototyping nano zirconia material. Background technique [0002] Zirconium dioxide (chemical formula: ZrO 2 ) is the main oxide of zirconium, usually in the form of white odorless and tasteless crystals, insoluble in water, hydrochloric acid and dilute sulfuric acid. Usually contain a small amount of hafnium dioxide. The chemical properties are inactive, and the properties of high melting point, high resistivity, high refractive index and low thermal expansion coefficient make it an important high temperature resistant material, ceramic insulating material and ceramic sunscreen. The energy band gap is about 5-7eV. Zirconium dioxide is used to make metal zirconium and zirconium compounds, refractory bricks and crucibles, hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/634C04B35/486B28B1/00
CPCB28B1/00C04B35/486C04B35/62605C04B35/634C04B2235/6026
Inventor 李慧芝李冬梅庄海燕
Owner UNIV OF JINAN
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