Preparation method of fluorinated hydroxyapatite (HA) composite material with uniform porous structure
A technology of fluorinated hydroxyapatite and composite materials, which is applied in the field of nanomaterials, can solve the problems that block repair and replacement cannot be applied, and achieve the effects of dense and firm tissue growth, enhanced thermal stability, and accelerated repair
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Embodiment 1
[0026] The fluorinated hydroxyapatite produced by the sol-gel method is used, and then compounded with polymethyl methacrylate to form a porous composite material. The specific implementation and characterization methods are as follows.
[0027] 0) Preparation of Ca 10 (PO 4 ) 6 (OH) 0.8 f 1.2 :
[0028] i) Calcium nitrate solution and diammonium hydrogen phosphate are made into 0.2mol / L homogeneous solution with pure water respectively, and the pH of the solution is adjusted to 11 with ammonia water;
[0029] ii) Ammonium fluoride was prepared into a homogeneous solution with a concentration of 0.2 ml / L with pure water, and the pH value was adjusted to 11 with ammonia water.
[0030] iii) Add diammonium hydrogen phosphate solution dropwise to calcium nitrate solution at a speed of 0.5mL / s to generate hydroxyapatite, then add ammonium fluoride solution at the same speed to generate fluorinated hydroxyapatite; Stir and adjust the pH to 11, and the stirring process lasts for...
Embodiment 2
[0038] The fluorinated hydroxyapatite produced by the sol-gel method is used, and then compounded with polymethyl methacrylate to form a porous composite material. The specific implementation and characterization methods are as follows.
[0039] 1) Add 0.8g Ca 10 (PO 4 ) 6 (OH) 0.6 f 1.4 , 0.5g polymethyl methacrylate, and 1g sodium lauryl sulfate are placed in a small beaker and stirred to make them fully mixed. Make the porous structure produced by PMMA more uniform.
[0040] 2) Dissolve 0.2g of ammonium bicarbonate in 1.5mL of pure water, shake continuously to dissolve completely; first dissolve evenly and then mix with powder, the foaming process is more uniform, and the generated micropores are also uniform.
[0041] 3) drying the obtained gel at a temperature of 70° C. to form a uniform nano-sized pore structure on the surface and inside of the material.
[0042] 4) Sinter the dried material in a melting furnace, heat to 600°C at a rate of 10°C / min, control the hea...
Embodiment 3
[0045] The fluorinated hydroxyapatite produced by the sol-gel method is used, and then compounded with polymethyl methacrylate to form a porous composite material. The specific implementation and characterization methods are as follows.
[0046] 1) Add 0.8g Ca 10 (PO 4 ) 6 (OH) 0.4 f 1.6 , 0.8g polymethyl methacrylate, and 1g sodium lauryl sulfate are placed in a small beaker and stirred to make them fully mixed. Make the porous structure produced by PMMA more uniform.
[0047] 2) Dissolve 0.3g of ammonium bicarbonate in 1.5mL of pure water, shake continuously to dissolve completely; first dissolve evenly and then mix with powder, the foaming process is more uniform, and the micropores produced are also uniform.
[0048] 3) drying the obtained gel at a temperature of 70° C. to form a uniform nano-sized pore structure on the surface and inside of the material.
[0049] 4) Sinter the dried material in a melting furnace, heat to 600°C at a rate of 10°C / min, control the heat...
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