Low-shrinkage porous ceramic component, injection feed and preparation method thereof
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A technology of porous ceramics and low shrinkage, which is applied in the field of ceramics and can solve problems affecting the performance stability of porous ceramic products, inconsistent sintering shrinkage, and fluctuations in the size, internal pore size, porosity, strength, and water absorption of porous ceramic products. , to achieve the effect of reducing sintering shrinkage, reducing shrinkage, and avoiding shrinkage deformation
Active Publication Date: 2021-03-26
山东丁鼎科技发展有限公司 +1
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[0003] However, porous ceramics will inevitably shrink during debinding and sintering. The sintering shrinkage rate of general porous ceramics is 3-15%. Both will cause inconsistency in sintering shrinkage, which will lead to fluctuations in performance parameters such as the size, inter
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Embodiment 1
[0064] A low-shrinkage porous ceramic, including the following raw materials: SiC whiskers 40kg, low-temperature glass powder 5kg and ZrO 2 5kg, injection accelerator 5kg, injection matrix agent 5kg, injection filler 30kg, plasticizer 1kg, choose dibutyl phthalate in this embodiment, pore-forming agent 40kg.
[0065] The whisker length can be 3~30um, the whisker diameter can be 1~3um, the aspect ratio can be 1~30, and the injection accelerator can be one or both of stearic acid and oleic acid. Select stearic acid among them, the injection matrix can be one or more in high-density polyethylene, medium-density polyethylene, low-density polyethylene, polypropylene, select polypropylene in this embodiment, and the injection filler can be paraffin , acetal resin, select paraffin in the present embodiment, plasticizer can be one or more in dioctyl phthalate, dibutyl phthalate, diethyl phthalate The pore forming agent can be one or more of polymethyl methacrylate, starch, and carbon...
Embodiment 2
[0072] The difference with Example 1 is: SiC whisker 56kg, low temperature glass frit 7kg and ZrO 2 7kg, injection accelerator 1kg, injection matrix agent 20kg, injection filler 12kg, plasticizer 5kg, pore-forming agent 10kg.
Embodiment 3
[0074] The difference with embodiment 1 is: SiC whisker 48kg, low temperature glass frit 6kg and ZrO 2 6kg, injection accelerator 2.5kg, injection matrix agent 15kg, injection filler 21kg, plasticizer 2.5kg, pore-forming agent 25kg.
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Abstract
The invention relates to the field of ceramics, and particularly discloses a low-shrinkage porous ceramic component, an injection feed and a preparation method thereof. The porous ceramic component comprises inorganic framework whiskers, an inorganic bonding material and an inorganic filling material, and the inorganic framework whiskers comprise one or more of SiC whiskers, Al2O3 whiskers, SiO2 whiskers and AlN whiskers; the preparation method comprises the following steps: uniformly ball-milling the treated ceramic components, internally mixing with an injection accelerator, an injection skeleton agent, an injection filler and a plasticizer, adding into a granulator to prepare the injection feed after the internal mixing is completed, finally injecting the injection feed into a ceramic green body, discharging glue, and sintering to obtain the low-shrinkage porous ceramic. The low-shrinkage porous ceramic disclosed by the invention can be applied to the fields of electronic cigarettes, atomization medical treatment and atomization cosmetic instruments, and has the advantages of low shrinkage rate, controllable size, high product percent of pass and the like.
Description
technical field [0001] This application relates to the field of ceramics, and more particularly, it relates to a low-shrinkage porous ceramic. Background technique [0002] Porous ceramic is a ceramic material with high porosity prepared by forming and high-temperature sintering process. It has high temperature resistance, high pressure resistance, acid, alkali and organic medium corrosion resistance, good biological inertia, controllable pore structure and high Excellent porosity, long service life, small bulk density, large specific surface area, good product regeneration performance, etc., can be applied to precision filtration and separation of various media, high-pressure gas exhaust silencer, gas distribution and electrolytic diaphragm and electronic smoke Core and other fields. [0003] However, porous ceramics will inevitably shrink during debinding and sintering. The sintering shrinkage rate of general porous ceramics is 3-15%. Both will cause inconsistency in sin...
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