Cement material and cement
一种粘固粉、粉体的技术，应用在医药科学、假体等方向，达到良好生物体适合性的效果
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Embodiment 1
[0135]
[0136] As a study of synthesis conditions, the synthesis of HAp9 hydroxyapatite) was carried out under the experimental conditions shown in Table 1.
[0137] The experimental parameters are the following five types.
[0138] Synthesis temperature (37, 50, 70°C),
[0139] Stirring speed (200, 400, 800rpm),
[0140] Reagent concentration (0.1M calcium hydroxide and 0.06M phosphoric acid, 0.5M calcium hydroxide and 0.3M phosphoric acid, 1.0M calcium hydroxide and 0.6M phosphoric acid, 2.0M potassium hydroxide and 1.2M phosphoric acid),
[0141] pH regulator (25% NH 4 OH, 1.5M NaoH, 1.5M KOH),
[0142] Phosphoric acid dripping speed (17, 4.2ml / min)
[0143]
[0144] A specific synthesis method is shown below.
[0145] First, prepare calcium hydroxide suspension 500cm 3 , drop phosphoric acid aqueous solution 500cm into it 3. The concentrations of calcium hydroxide and phosphoric acid were adjusted to Ca / P=1.67 (molar ratio). In addition, it is adjusted so tha...
Embodiment 2
[0163] 6 Powder preparation>
[0164] Using the synthetic conditions obtained in Example 1, the "freeze-dried HAp / IP" 6 Powder".
[0165] Using the resulting lyophilized HAp / IP 6 As for the powder, cement was produced in the same manner as in Example 1, and the compressive strength of the cement was measured. The results are shown in Table 2.
[0166]
[0167] Freeze-dried HAp / IP was measured using a laser diffraction / scattering particle size distribution analyzer LA-300 (manufactured by Horiba, Ltd.) 6 The median diameter and particle size distribution of the powder. Disperse the reagent in purified water and measure it with a flow cell. Freeze-dried HAp / IP 6 The median diameter of the powder is shown in Table 2, and the results of the particle size distribution measurement are shown in figure 1 middle.
[0168]
[0169] The surface coefficient (Specific surface area; SSA) of the freeze-dried HAp powder was measured by the BET method using a microparticle automati...
Embodiment 3
[0175] 6 Powder preparation>
[0176] Carry out wet synthesis identically with embodiment 2, after ripening, utilize suction filtration to reclaim HAp slurry, make slurry in 300cm 3 suspended in acetone, and then recovered by suction filtration again. The recovered HAp slurry was air-dried until the acetone disappeared, and then dried in a dryer set at 110 °C for two days. Except that, same as Example 2, 6 Powder>.
[0177] The resulting 110°C dried HAp / IP 6 The median diameter of the powder is shown in Table 2, and the results of the particle size distribution measurement are shown in figure 1 , the surface coefficient measurements are shown in the figure 2 , the X-ray diffraction pattern is shown in image 3 , half-value widths are shown in Table 2. Alternatively, use the resulting 110°C dried HAp / IP 6 As for the powder, cement was produced in the same manner as in Example 1, and the results of measuring the compressive strength of the cement are shown in Table 2.
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