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Surface-modified zirconium oxide injection molding solvent degreasing feed as well as preparation method and application thereof

A technology of surface modification and injection molding, which is applied in the field of injection molding of zirconia ceramics, can solve problems such as swelling, cracks, and complicated process technology, and achieve the effect of good support, good compatibility, and uniform mixing

Pending Publication Date: 2020-06-05
长裕控股集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Zirconia ceramic injection molding solvent degreasing feed is very strict in the selection of binder, and the process is complicated, prone to swelling, cracks and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The surface of the zirconia powder is modified, and the specific implementation steps are:

[0035] Step 1, mixing zirconia and pure water in a container at a mass ratio of 1:3 to form a mixed zirconia slurry;

[0036] Step 2, adding ammonia water to the zirconia slurry, stirring while adding, adjusting the pH value within the range of 8±0.5 to form an alkaline zirconia slurry;

[0037] Step 3, drying the zirconia slurry in an oven to remove moisture to obtain modified zirconia powder.

Embodiment 2

[0039] The modified zirconia powder prepared in Example 1 and the binder are batched in a mass ratio of 82:18, wherein, in the binder, stearic acid, polypropylene, high-density polyethylene, polystyrene, styrene The weight ratio of thermoplastic elastomer, fully refined paraffin, and diethylene glycol dibenzoate is 3:8:10:7:8:61:3, and weighed according to the proportion to obtain the feed composition of this embodiment.

Embodiment 3

[0041] The ratio of the modified zirconia powder prepared in Example 1 to the binder is 83:17, wherein, in the binder, polysorbate, low-density polyethylene, linear low-density polyethylene, polyurethane thermoplastic elastomer, The weight ratio of microcrystalline paraffin, carnauba wax, and diethylene glycol dibenzoate is 6:17:18:15:30:8:6, and they are weighed according to the proportion to obtain the feed composition of this embodiment.

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PUM

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Abstract

The invention belongs to the technical field of zirconium oxide ceramic injection molding, and particularly relates to surface-modified zirconium oxide injection molding solvent degreasing feed as well as a preparation method and an application thereof. A feed is prepared from modified zirconium oxide powder and a binder, and the mass ratio of the modified zirconium oxide powder to the binder is (82-91): (9-18); wherein the mass ratio of a surfactant to skeleton resin to elastomer resin to a lubricating aid to a plasticizer in the binder is (3-6): (25-35): (8-15): (38-61): (3-6); after modification, the surface of the zirconium oxide powder is alkaline, and the zirconium oxide powder can be better combined with an acidic surfactant. According to the invention, the adopted binder has good compatibility, the skeleton binder has good supporting performance on the strength of a green body at a high temperature, and the binder adopts a plurality of different components, so that the use requirements of different products can be met; meanwhile, the preparation method provided by the invention is more beneficial to uniform mixing of the modified zirconium oxide powder and the binder.

Description

technical field [0001] The invention belongs to the technical field of injection molding of zirconia ceramics, and in particular relates to a surface-modified zirconia injection molding solvent degreasing feedstock and a preparation method and application thereof. Background technique [0002] Structural ceramics refer to a class of advanced ceramic materials mainly combined by ionic bonds and covalent bonds, which have excellent properties such as high strength, high hardness, high temperature resistance, wear resistance, and corrosion resistance. This kind of material has been widely used at home and abroad, covering chemical industry, metallurgy, machinery and other fields and people's daily life. In the past 20 years, structural ceramics have been used more and more in high-tech fields such as aerospace, communication electronics, biomedicine, and national defense. Zirconia, as an excellent representative, has attracted widespread attention. [0003] Solvent extraction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/626C04B35/48C04B35/632C04B35/634
CPCC04B35/62605C04B35/62655C04B35/48C04B35/62695C04B35/632C04B35/63408C04B35/63496C04B35/63488C04B35/63456C04B2235/6022C04B2235/616C04B2235/656C04B2235/6567C04B2235/77C04B2235/96
Inventor 李志强刘策杨瑶刚付珂高笑王德昌
Owner 长裕控股集团股份有限公司
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