Preparation method for calcium polyphosphate-tricalcium phosphate bone bracket
A technology of tricalcium phosphate bone and calcium polyphosphate, applied in medical science, prosthesis and other directions, can solve the problems of high porosity of porous ceramics, poor control of pore shape, poor mechanical strength of porous bodies, etc., to achieve high efficiency and cost. low cost effect
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Embodiment 1
[0025] 1. Weigh 0.1g of PVA, put it into a 50ml beaker, place it in an oven at 110°C, take it out after 60 minutes, cool it to room temperature, filter it with gauze, and set it aside.
[0026] 2. Weighing 8 grams of TCP / CPP composite ceramic powder with a mass ratio of 20.0, 0.45 grams of methylcellulose powder, mechanically mixing; adding 15 milliliters of the above-mentioned PVA solution, 3% H 2 o 2 2 ml, mixed by ball milling, the ball milling speed is 300 rpm, and the ball milling time is 4 hours.
[0027] 3. The resulting slurry was poured into a plastic mold and dried by a four-step drying method, namely drying at 28°C for 1 day, drying at 35°C for 1 day, drying at 45°C for 1 day, and drying at 60°C for 1 day.
[0028] 4. The porous green body is placed in a crucible after demoulding, and placed in a programmed temperature-controlled high-temperature sintering furnace for sintering. The heating program is 0-300°C for 3 hours, 300-600°C for 1 hour, and the heating rate ...
Embodiment 2
[0030] 1. Weigh 0.1g of PVA, put it into a 50ml beaker, place it in an oven at 110°C, take it out after 60 minutes, cool it to room temperature, filter it with gauze, and set it aside.
[0031] 2. Weighing 8 grams of TCP / CPP composite ceramic powder with a mass ratio of 15.0, 0.6 grams of methylcellulose powder, mechanically mixing; adding 10 milliliters of the above-mentioned PVA solution, 3% H 2 o 2 5 milliliters, 2 milliliters of deionized water, mixed by ball milling, ball milling speed 350 rpm, ball milling time 6 hours.
[0032]3. The resulting slurry was poured into a plastic mold and dried by a four-step drying method, namely drying at 28°C for 1 day, drying at 35°C for 1 day, drying at 45°C for 1 day, and drying at 60°C for 1 day.
[0033] 4. After demoulding, the porous green body is placed in a crucible and sintered in a programmed temperature-controlled high-temperature sintering furnace. The heating program: 0-300°C for 3 hours, 300-600°C for 1 hour, and the heat...
Embodiment 3
[0035] 1. Weigh 0.1g of PVA, put it into a 50ml beaker, place it in an oven at 110°C, take it out after 60 minutes, cool it to room temperature, filter it with gauze, and set it aside.
[0036] 2. Weighing 8 grams of TCP / CPP composite ceramic powder with a mass ratio of 25.0, 0.75 grams of methylcellulose powder, mechanically mixing; adding 3 milliliters of the above-mentioned PVA solution, 3% H 2 o 2 3 milliliters, 12 milliliters of deionized water, mixed by ball milling, ball milling speed 400 rpm, ball milling time 4 hours.
[0037] 3. The resulting slurry was poured into a plastic mold and dried by a four-step drying method, namely drying at 28°C for 1 day, drying at 35°C for 1 day, drying at 45°C for 1 day, and drying at 60°C for 1 day.
[0038] 4. The porous green body is placed in a crucible after demoulding, and then sintered in a program temperature-controlled high-temperature sintering furnace. The heating program: 0-300°C for 3 hours, 300-600°C for 1 hour, and the ...
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