Method for preparing calcium polyphosphate / tricalcium phosphate two-phase biological ceramic
A technology of tricalcium phosphate and calcium polyphosphate, applied in the field of preparation of ceramic materials
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Embodiment 1
[0027] 1. Add Ca(H 2 PO 4 ) 2 ·H 2 O is heated up to 500°C, kept warm, then heated up to 1100°C with a heating rate of 10°C / min and kept warm to melt it, then quenched in cold water to obtain glassy amorphous CPP, ball milled, dried, and set aside.
[0028] 2. Amorphous CPP powder and HAP powder were mixed at a weight ratio of 0.12, and the mixed powder was ball milled with ethanol as a medium at a speed of 300 rpm for 12 hours, dried, passed through a 150-mesh sieve, and set aside.
[0029] 3. Weigh 10 grams of the above CPP / HAP mixed powder, put it into a mortar, add 3 milliliters of 2 wt % polyvinyl alcohol (PVA) aqueous solution, mix and granulate. Fill the granulated powder mm cylindrical stainless steel mold, after dry pressing, dry at 80°C for 3 days.
[0030] 4. The dried sample was sintered at 1200°C for 2 hours to obtain a dual-phase composite ceramic with a component composition of about 97wt% β-TCP and 3wt% amorphous CPP. The compressive strength is 150% of ...
Embodiment 2
[0032] 1. Add Ca(H 2 PO 4 ) 2 ·H 2 O is heated up to 500°C, kept warm, then heated up to 1100°C with a heating rate of 10°C / min and kept warm to melt it, then quenched in cold water to obtain glassy amorphous CPP, ball milled, dried, and set aside.
[0033] 2. Amorphous CPP powder and HAP powder were mixed at a weight ratio of 0.15, and the mixed powder was ball-milled with ethanol at a speed of 300 rpm for 12 hours, dried, passed through a 150-mesh sieve, and set aside.
[0034]3. Weigh 10 grams of the above CPP / HAP mixed powder, put it into a mortar, add 3 milliliters of 2 wt % polyvinyl alcohol (PVA) aqueous solution, mix and granulate. Fill the granulated powder mm cylindrical stainless steel mold, after dry pressing, dry at 80°C for 3 days.
[0035] 4. The dried sample was sintered at 1300° C. for 2 hours to obtain a dual-phase composite ceramic with a component composition of about 95 wt % β-TCP and 5 wt % amorphous CPP. The compressive strength is 250% higher tha...
Embodiment 3
[0037] 1. Add Ca(H 2 PO 4 ) 2 ·H 2 O is heated up to 500°C, kept warm, then heated up to 1100°C with a heating rate of 10°C / min and kept warm to melt it, then quenched in cold water to obtain glassy amorphous CPP, ball milled, dried, and set aside.
[0038] 2. Amorphous CPP powder and HAP powder were mixed at a weight ratio of 0.30, and the mixed powder was ball-milled with ethanol as a medium at a speed of 300 rpm for 12 hours, dried, passed through a 150-mesh sieve, and set aside.
[0039] 3. Weigh 10 grams of the above CPP / HAP mixed powder, put it into a mortar, add 3 milliliters of 2 wt % polyvinyl alcohol (PVA) aqueous solution, mix and granulate. Fill the granulated powder mm cylindrical stainless steel mold, after dry pressing, dry at 80°C for 3 days.
[0040] 4. The dried sample was sintered at 1350° C. for 2 hours to obtain a dual-phase composite ceramic with a component composition of about 82 wt % of β-TCP and 18 wt % of amorphous CPP. The compressive strengt...
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