Degradation-controllable magnesium phosphate cement and preparation method and application thereof
A technology of magnesium phosphate bone cement and potassium dihydrogen phosphate, which is applied in medical science, prostheses, tissue regeneration, etc., can solve the problem of difficulty in matching the metabolic rate with the growth rate of new bone, unsatisfactory speed and controllable degradation, and water resistance. Insufficient performance and other problems, to achieve good application prospects, controllable degradation rate, high compressive strength
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[0035] Example 1
[0036] a. Put analytically pure magnesium hydroxide at 1500°C for 8 hours, cool it naturally in the furnace, grind, and pass through a 200-mesh sieve to obtain the required magnesium oxide powder;
[0037] b. Weigh the raw materials by mass percentage: 65% magnesium oxide powder, 15% potassium dihydrogen phosphate, 7% borax, and 13% deionized water;
[0038] c. Fully mix and stir the weighed potassium dihydrogen phosphate, borax and deionized water in step b;
[0039] d. Add the magnesium oxide powder weighed in step b to the mixed slurry in step c, and mix and stir quickly;
[0040] e. Put the slurry prepared in step d into a mold for molding, and place it in an environment of 20±2° C. and a relative humidity of 50±5% for curing to obtain the controllable degradable magnesium phosphate bone cement.
Example Embodiment
[0041] Example 2
[0042] a. Put analytically pure magnesium hydroxide at 1500°C for 8 hours, cool it naturally in the furnace, grind, and pass through a 200-mesh sieve to obtain the required magnesium oxide powder;
[0043] b. Weigh the raw materials according to mass percentage: magnesium oxide powder 65%, potassium dihydrogen phosphate 15%, borax 7%, deionized water 12%, chitosan 1%;
[0044] c. Fully mix and stir the weighed potassium dihydrogen phosphate, borax, chitosan and deionized water in step b;
[0045] d. Add the magnesium oxide powder weighed in step b to the mixed slurry in step c, and mix and stir quickly;
[0046] e. Put the slurry prepared in step d into a mold for molding, and place it in an environment of 20±2° C. and a relative humidity of 50±5% for curing to obtain the controllable degradable magnesium phosphate bone cement.
Example Embodiment
[0047] Example 3
[0048] a. Put analytically pure magnesium hydroxide at 1500°C for 8 hours, cool it naturally in the furnace, grind, and pass through a 200-mesh sieve to obtain the required magnesium oxide powder;
[0049] b. Weigh the raw materials according to mass percentage: magnesium oxide powder 65%, potassium dihydrogen phosphate 15%, borax 7%, deionized water 11%, chitosan 1%, hydroxypropyl methylcellulose 1%;
[0050] c. Mix and stir the weighed potassium dihydrogen phosphate, borax, chitosan, hydroxypropyl methylcellulose and deionized water in step b;
[0051] d. Add the magnesium oxide powder weighed in step b to the mixed slurry in step c, and mix and stir quickly;
[0052] e. Put the slurry prepared in step d into a mold for molding, and place it in an environment of 20±2°C and a relative humidity of 50±5% for curing to obtain the controllable degradable magnesium phosphate cement.
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