Zirconia ceramic injection molding catalytic degreasing feed as well as preparation method and application thereof

A zirconia ceramic and injection molding technology, which is applied in the field of zirconia ceramic injection molding catalytic degreasing feed and its preparation, can solve the problems of easy deformation of ceramic green bodies, and achieve the effects of good shape, avoiding agglomeration, and excellent mechanical properties

Pending Publication Date: 2022-02-08
长裕控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the water solvent degreasing feed for zirconia ceramic injection molding disclosed in patent CN202011579647.6 has improved the defect of the above-mentioned patented kerosene as a solvent for degreasing, the green body prepared by the feed can use water as a solvent when degreasing, which is more environmentally friendly, but Water degreasing still has the problem of easy deformation of ceramic green body

Method used

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  • Zirconia ceramic injection molding catalytic degreasing feed as well as preparation method and application thereof
  • Zirconia ceramic injection molding catalytic degreasing feed as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The raw material composition of zirconia ceramic injection molding catalytic degreasing feed is as follows: the mass ratio of zirconia powder to binder is 81:19; in the binder, polyoxymethylene, high-density polyethylene, microcrystalline wax, phthalic acid The weight ratio of esters is 72:18:6:4.

[0033] The preparation method and application method are:

[0034] (1) Internal mixing: Dry the zirconia powder at 100°C for 6 hours for pretreatment, set the temperature of the internal mixer at 170°C, and the stirring speed at 10r / min, add polyoxymethylene and high-density polyethylene, and mix 10min, then add zirconia powder and microcrystalline wax accounting for 2 / 3 of the total mass of zirconia powder, knead for 5min, add the remaining zirconia powder, knead for 15min, then add phthalate, mix Refining for 90 minutes to obtain the mixed lump feed;

[0035] (2) Granulation: Put the mixed lump feed into the granulator, set the temperature at 140°C, the extrusion speed a...

Embodiment 2

[0039] The raw material composition of zirconia ceramic injection molding alcohol solvent degreasing feed is as follows: the ratio of zirconia powder to binder is 83:17, and the binder includes polyoxymethylene, high-density polyethylene, ethylene vinyl acetate copolymer, phthalate The weight ratio of formic acid diester is 74:17:7:2.

[0040] The preparation method and application method are:

[0041] (1) Internal mixing: Dry the zirconia powder at 105°C for 8 hours for pretreatment, set the temperature of the internal mixer at 175°C, and the stirring speed at 15r / min, add polyoxymethylene and high-density polyethylene, and mix 8 minutes, then add zirconia powder and ethylene vinyl acetate copolymer accounting for 3 / 4 of the total mass of zirconia powder, knead for 8 minutes, add the remaining zirconia powder, knead for 20 minutes, and then add phthalic acid diester , kneading for 100min, to obtain a good mixed feed;

[0042] (2) Granulation: Put the mixed lump feed into th...

Embodiment 3

[0046] The raw material composition of zirconia ceramic injection molding alcohol solvent degreasing feed is: the ratio of zirconia powder to binder is 84:16, polyoxymethylene, polyvinyl alcohol, microcrystalline wax, dimethyl phthalate in the binder The weight ratio of esters is 75:16:6:3.

[0047] The preparation method and application method are:

[0048](1) Internal mixing: Dry the zirconia powder at 110°C for 8 hours for pretreatment, set the temperature of the internal mixer at 165°C, and the stirring speed at 10r / min, add polyoxymethylene and polyvinyl alcohol, and mix for 10 minutes , then add zirconia powder and microcrystalline wax accounting for 2 / 3 of the total mass of zirconia powder, knead for 10 minutes, add the remaining zirconia powder, knead for 20 minutes, then add dimethyl phthalate, mix Refining for 120min to obtain the mixed lump feed;

[0049] (2) Granulation: Put the mixed lump feed into the granulator, set the temperature at 145°C, the extrusion spee...

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Abstract

The invention belongs to the field of zirconia ceramic injection molding, and particularly relates to a zirconia ceramic injection molding catalytic degreasing feed as well as a preparation method and application thereof. The zirconia ceramic injection molding catalytic degreasing feed is prepared from 81-90 wt% of zirconia powder and 10-19 wt% of a binder; the binder is composed of a main binder, a lubricant, skeleton resin and a plasticizer, and the mass ratio of the main binder to the skeleton resin to the lubricant to the plasticizer is (70-80): (15-20): (3-8): (2-5). Aiming at the defects of existing thermal degreasing and solvent degreasing, the invention provides the zirconia ceramic injection molding catalytic degreasing feed, so that the degreasing time is greatly shortened, the degreasing process is safe and environment-friendly, and the production efficiency is greatly improved; the invention further provides a preparation method and application of the ceramic material. A ceramic product obtained after degreasing and sintering is excellent in mechanical property.

Description

technical field [0001] The invention belongs to the field of injection molding of zirconia ceramics, in particular to a catalytic degreasing feed material for injection molding of zirconia ceramics and its preparation method and application. Background technique [0002] The powder injection molding process is a new type of powder metallurgy injection process formed by the perfect combination of advanced injection molding technology and powder metallurgy technology. Its advantages are that it can manufacture high dimensional accuracy, one-time molding is particularly complicated, high degree of machining, and easy to realize continuous automatic production. Parts with such characteristics as "one of the most popular molding technologies" have been widely used in medical equipment, communication engineering, aerospace engineering, toys and other fields. [0003] The powder injection molding process includes four stages of batching and banburying, injection molding, debinding,...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/622C04B35/638
CPCC04B35/48C04B35/622C04B35/638C04B2235/6562C04B2235/6567C04B2235/658C04B2235/77C04B2235/96
Inventor 杨瑶刚王德昌
Owner 长裕控股集团有限公司
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