Nano-granules reinforced ultra-high molecular weight polyethylene artificial joint material and production method thereof
An ultra-high molecular weight, nanoparticle technology, applied in the field of materials for implanted devices, can solve the problems of difficulty in improving the wear resistance of UHMWPE and difficult long-term use, and achieve the effects of improving lubrication, wetting and reducing wear.
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Embodiment 1
[0023] Embodiment 1: select ultra-high molecular weight polyethylene powder for use, molecular weight is 3,000,000; Filling material is to use nanometer SiO 2 Powder (note: other nanoparticles with good biocompatibility are acceptable, such as metal and alloy particles), with a purity of 99% and an average particle size of 10nm.
[0024] The preparation process of the composite material is as follows:
[0025] (1) be that 100m sieve is screened to high molecular weight polyethylene powder with aperture;
[0026] (2) Use 1% KH-570 coupling agent to nano-SiO 2 Particle surface modification;
[0027] (3) the mass fraction is respectively 1%, 3%, 6%, 10% nano-SiO 2 The powder and the UHMWPE powder are wet-mixed in an ethanol solution in a ball mill, the speed of the ball mill is 200 rpm, and each mixing process is clockwise and counterclockwise for 30 minutes;
[0028] (4) Ultrasonic dispersion is carried out for 10 minutes to the powder after wet mixing, and then dried in a d...
Embodiment 2
[0033] Embodiment 2: select ultra-high molecular weight polyethylene powder for use, and molecular weight is 5,000,000; Filling material is tetragonal nanometer ZrO 2 Powder with a purity of 99.9% and an average particle size of 40nm.
[0034] The preparation process of the composite material is as follows:
[0035] (1) be that 100m sieve is screened to high molecular weight polyethylene powder with aperture;
[0036] (2) Use 1.5% KH-570 coupling agent to nanometer ZrO 2 Particle surface modification;
[0037] (3) the mass fraction is respectively 1%, 2%, 3%, 5% nanometer ZrO 2 The powder and the UHMWPE powder are wet-mixed in an ethanol solution in a ball mill, the speed of the ball mill is 200 rpm, and each mixing process is clockwise and counterclockwise for 30 minutes;
[0038] (4) Ultrasonic dispersion is carried out for 10 minutes to the powder after wet mixing, and then dried in a drying oven;
[0039] (5) Add the dried mixed powder into the mold, hot-press molding...
Embodiment 3
[0043] Embodiment 3: Select ultra-high molecular weight polyethylene powder, molecular weight is 5,000,000; Filling material is α crystal form nanometer Al 2 o 3 Powder with a purity of 99.9% and an average particle size of 80nm.
[0044] The preparation process of the composite material is as follows:
[0045] (1) be that 100m sieve is screened to high molecular weight polyethylene powder with aperture;
[0046](2) Use 3% KH-570 coupling agent to nanometer Al 2 o 3 Particle surface modification;
[0047] (3) the mass fraction is respectively 1%, 2%, 3%, 5%, 10% nanometer Al 2 o 3 The powder and the UHMWPE powder are wet-mixed in an ethanol solution in a ball mill, the speed of the ball mill is 200 rpm, and each mixing process is clockwise and counterclockwise for 30 minutes;
[0048] (4) Ultrasonic disperse the powder after wet mixing for 10 minutes, and then dry in a drying oven;
[0049] (5) Add the dried mixed powder into the mold, hot-press molding at a pressure o...
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