Ceramic composite material for artificial joint and preparation method thereof
A ceramic composite material, artificial joint technology, applied in the direction of prosthesis, tissue regeneration, medical science, etc., to achieve the effect of improving wear resistance, increasing dispersion, and avoiding agglomeration
Active Publication Date: 2022-01-28
CHANGZHOU WASTON MEDICAL APPLIANCE CO LTD
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Problems solved by technology
[0004] In order to solve the problem that the existing ceramic composite materials cannot have high strength and high toughness at the same time, the invention discloses a ceramic composite material for artificial joints and a preparation method thereof. The ceramic composite material improves the toughness of the ceramic material through alumina fibers
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[0022] The present invention is described in further detail now in conjunction with embodiment.
[0023] The preparation method of ceramic composite material for artificial joint is as follows:
[0024] (1) Take each component in proportion, add deionized water, stir to make a slurry, and then carry out ball milling to the above slurry in a ball mill to obtain a uniformly dispersed slurry;
[0025] (2) spray drying the uniformly dispersed slurry in step (1) to obtain granulated material;
[0026] (3) the granulated material in the step (2) is cold-pressed;
[0027] (4) Put the molded product in step (3) into the mold, and perform high-temperature calcination under vacuum or under the protection of inert gas. The calcination temperature is 1100-1300°C, and the time is 1-5h, and then take it out after natural cooling. .
[0028] In a specific embodiment, according to actual needs, the silane coupling agent KH550 can also be used to modify alumina, zirconia, alumina fiber, zin...
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Abstract
The invention belongs to the field of biological materials, and in particular relates to a ceramic composite material for artificial joints and a preparation method thereof. The ceramic composite material for artificial joints consists of the following components in parts by weight: 60-90 parts of alumina, 10-10 parts of zirconia 30 parts, 3-8 parts of alumina fiber, 0-2 parts of zinc oxide, 0-5 parts of calcium oxide, 0-5 parts of magnesium oxide, the zirconium oxide contains hafnium oxide impurities, and the hafnium oxide impurities account for Less than 5% of the total mass of zirconium. The alumina fiber added in the present invention has high elasticity and compressive strength, which is beneficial to increase the toughness of the ceramic composite material and reduce the possibility of ceramic composite material fragmentation; the alumina fiber is modified by KH550, which can be used in alumina The fiber is covered with a larger group, so that the fibers cannot be in close contact, and the amino group in KH550 is conducive to the dispersion of the modified fiber in water, avoiding agglomeration, and increasing the dispersibility of the alumina fiber in the slurry, thereby Increase the dispersion of fibers in ceramic composites.
Description
technical field [0001] The invention belongs to the field of biological materials, and in particular relates to a ceramic composite material for artificial joints and a preparation method thereof. Background technique [0002] So far, artificial joint technology has achieved great success, and the materials used in artificial joints mainly include metal, polymer and ceramic materials. Metal materials were first used as artificial joints, which have very good strength, toughness and formability, but due to their stress shielding, and poor biocompatibility and wear and corrosion resistance, it is easy to cause damage to surrounding areas. Chronic inflammation of tissues, etc., so metal materials are not the most suitable joint materials. Subsequent ultra-high molecular weight polyethylene causes bone inflammation, aseptic loosening and prosthetic shedding due to wear and tear debris generated during long-term use. As a result, new artificial joints need to be replaced. Theref...
Claims
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IPC IPC(8): C04B35/10C04B35/622C04B35/80
CPCC04B35/10C04B35/622A61L27/446A61L27/306A61L27/303A61L27/50C04B2235/3244C04B2235/5224C04B2235/3208C04B2235/3284C04B2235/3206C04B2235/96A61L2430/24H99Z99/00
Inventor 高崇勇王逸杰
Owner CHANGZHOU WASTON MEDICAL APPLIANCE CO LTD