A low-temperature 3D printing method of borosilicate bioglass/magnesium phosphate composite bone cement and its bone scaffold
A technology of magnesium phosphate bone cement and bioglass, which is applied in the field of borosilicate bioglass/magnesium phosphate composite bone cement and low-temperature 3D printing of bone scaffolds, which can solve the problems that the mechanical properties cannot meet the needs of hard tissue bone scaffolds.
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Embodiment 1
[0049] Prepare 30ml of 1mol / L nitric acid for later use, add 18ml of ethanol to the beaker, then add 45g of calcium nitrate and 9ml of prepared nitric acid into the beaker and let it stand. 50ml of ethyl orthosilicate and 3.45ml of tributyl phosphate were dropped into the beaker and stirred for two hours. Then add 32ml of tributyl borate dropwise into the beaker, continue to stir for 2h, and age for 12h. The obtained gel-like solid was placed in a drying oven and dried at 80° C. for 12 h. Afterwards, it was taken out and calcined for two hours at 600° C. to obtain a glass powder. After the powder is cooled to room temperature, put it into a ball mill to grind for 2 hours, and store it in a bag.
[0050] Accurately weigh 10g of glass powder, 16.212g of magnesium oxide, and 13.759g of potassium dihydrogen phosphate through a balance, mix them in a bowl, and manually grind for 10 minutes. Measure 17ml of polyethylene glycol into a beaker, then add the mixed solids into the bea...
Embodiment 2
[0054] Prepare 20ml of 0.5mol / L nitric acid for later use, add 12ml of ethanol to the beaker, then add 30g of calcium nitrate and 6ml of prepared nitric acid into the beaker and let it stand still. 33ml of ethyl orthosilicate and 2.295ml of tributyl phosphate were dropped into the beaker and stirred for two hours. Then add 21ml of tributyl borate dropwise into the beaker, continue to stir for 4h, and after aging for 24h, place the obtained gel-like solid in a drying oven and dry at 70°C for 8h. After that, it was taken out and calcined at 800°C for 1 hour to obtain glass powder. After the powder is cooled to room temperature, put it into a ball mill to grind for 2 hours, and store it in a bag.
[0055] Accurately weigh 15g of glass powder, 24.32g of magnesium oxide, and 20.65g of potassium dihydrogen phosphate through a balance, put them in a bowl after mixing, and manually grind for 15 minutes. Measure 25.5ml of polyethylene glycol into a beaker, then add the mixed solids i...
Embodiment 3
[0059] Prepare 40ml of 1.5mol / L nitric acid for later use, add 24ml of ethanol to the beaker, then add 60g of calcium nitrate and 12ml of prepared nitric acid into the beaker and let it stand. 66ml of ethyl orthosilicate and 4.59ml of tributyl phosphate were dropped into the beaker and stirred for 4h. Then add 42ml of tributyl borate dropwise into the beaker, continue to stir for 4h, and after aging for 36h, place the obtained gel-like solid in a drying oven and dry at 70°C for 9h. After that, it was taken out and calcined at 900° C. for 1 hour to obtain glass powder. After the powder is cooled to room temperature, put it into a ball mill to grind for 2 hours, and store it in a bag.
[0060] Accurately weigh 30 g of glass powder, 48.64 g of magnesium oxide, and 41.3 g of potassium dihydrogen phosphate through a balance, mix them in a bowl, and manually grind for 20 minutes. Measure 51ml of polyethylene glycol into a beaker, then add the mixed solids into the beaker in small ...
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