Preparation method of double gradient porous niti/hydroxyapatite composite material
A hydroxyapatite and composite material technology is applied in the field of preparation of double gradient porous NiTi/hydroxyapatite composite materials, which can solve the problems of unfavorable Ni ions for human health, reduce NiTi alloys and the like, and achieve the protection of biocompatibility, Improved strength and toughness, good biocompatibility
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example 1
[0022] 1. Preparation of NiTi / hydroxyapatite slurry
[0023] a. According to the number of parts by mass, put 20 parts of sodium stearate into 80 parts of absolute ethanol, then place the mixed solution in a constant temperature water bath at 60°C and stir to completely dissolve the sodium stearate, and prepare stearin with a concentration of 20%. Sodium bicarbonate-ethanol premix solution, and then keep warm in a constant temperature water bath at 60°C for later use.
[0024] b. In parts by mass, weigh 35.55 parts of hydroxyapatite with a particle size of 100 nm, 2.7 parts of NiTi with a particle size of 60 nm, 6.75 parts of polystyrene as a pore-forming agent with a particle size of 20 μm; 1.35 parts of polyethylene glycol as a dispersant, stearin 53.65 parts of sodium bicarbonate-ethanol premix, which was weighed and immediately placed in a constant temperature water bath at 60°C for future use.
[0025] c. Add 1.35 parts of dispersant polyethylene glycol to the 53.65 p...
example 2
[0030] 1. Preparation of NiTi / hydroxyapatite slurry
[0031] a. According to the number of parts by mass, put 20 parts of sodium stearate into 80 parts of absolute ethanol, then place the mixed solution in a constant temperature water bath at 70°C and stir to completely dissolve the sodium stearate, and prepare stearin with a concentration of 20%. Sodium acid-ethanol premixed solution, and then kept in a constant temperature water bath at 70°C for later use.
[0032] b. In parts by mass, weigh 47.4 parts of hydroxyapatite with a particle size of 100 nm, 3.6 parts of NiTi with a particle size of 60 nm, 9 parts of polystyrene as a pore-forming agent with a particle size of 20 μm; 3 parts of polyethylene glycol as a dispersant, stearin 37 parts of sodium bicarbonate-ethanol premixed solution, which was weighed and immediately placed in a constant temperature water bath at 70°C for future use.
[0033]c. Add 3 parts of dispersant polyethylene glycol to the 37 parts of sodium s...
example 3
[0038] 1. Preparation of NiTi / hydroxyapatite slurry
[0039] a. According to the number of parts by mass, put 20 parts of sodium stearate into 80 parts of absolute ethanol, then place the mixed solution in a constant temperature water bath at 65°C and stir to completely dissolve the sodium stearate, and prepare stearin with a concentration of 20%. Sodium acid-ethanol premixed solution, and then kept in a constant temperature water bath at 65°C for later use.
[0040] b. In parts by mass, weigh 39.5 parts of hydroxyapatite with a particle size of 100nm, 3 parts of NiTi with a particle size of 60nm, 7.5 parts of polystyrene as a pore-forming agent with a particle size of 20 μm; 2 parts of dispersant polyethylene glycol, stearic acid 48 parts of sodium-ethanol premixed solution, which was weighed and immediately placed in a constant temperature water bath at 65°C for future use.
[0041] c. Add 2 parts of dispersant polyethylene glycol to the 48 parts of sodium stearate-ethan...
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