Rapidly solidified calcium phosphate cement composite material and its preparation method
A fast-setting calcium phosphate and composite material technology, applied in the intersection of materials science and biomedicine, can solve the problems of low strength, slow setting speed of calcium phosphate bone cement, poor mechanical properties, etc., and achieve high mechanical properties and shorten setting time. , good effect of biological electromagnetic effect
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Embodiment 1
[0018] 1) Analytical pure calcium hydrogen phosphate dihydrate (DCPD) was dried at 120°C for 10 h, and analyzed with analytically pure CaCO 3 The powder was mixed through a 200-mesh sieve by dry ball milling at a molar ratio (mol) of 2:1, and the mixed powder was calcined in a high-temperature sintering furnace to 1250°C. At room temperature, white loose α-tricalcium phosphate bone cement (α-TCP) powder was obtained;
[0019] 2) In terms of weight percentage, 99.4% α-tricalcium phosphate bone cement and 0.6% carbon nanotubes are mechanically milled to obtain bone cement composite powder;
[0020] 3) 100mg of chitosan with a degree of deacetylation of 95% was dissolved in 4.5ml of 0.1mol L -1 In hydrochloric acid, fully stir for 2 hours to obtain a clear solution; dissolve 500mg of β-sodium glycerophosphate in 0.5ml of deionized water, add dropwise to the chitosan solution at a volume ratio of 1:9, and stir while dripping , after the solution is mixed, continue to stir for 20...
Embodiment 2
[0026] 1) Analytical pure calcium hydrogen phosphate dihydrate (DCPD) was dried at 120°C for 10 h, and analyzed with analytically pure CaCO 3 The powder is mixed by ball milling in a 2:1 (mol) method and calcined in a high-temperature sintering furnace to 1250°C. After holding for 2 hours, it is quickly taken out, and cooled down to room temperature at a rate of 120°C / min to obtain white loose α-phosphoric acid. Tricalcium bone cement (α-TCP) powder;
[0027] 2) In terms of weight percentage, 99.5% α-tricalcium phosphate bone cement and 0.5% carbon nanotubes are mechanically milled to obtain bone cement composite powder;
[0028] 3) 90mg of chitosan with a degree of deacetylation of 95% was dissolved in 4.5ml of 0.1mol L -1 In hydrochloric acid, fully stirred for 2 hours to obtain a clear solution; 400mg β-sodium glycerophosphate was dissolved in 0.5ml deionized water, and was added dropwise to the chitosan solution according to the volume ratio of 1:9, and stirred while drip...
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