Preparation method of sea urchin-like multi-whisker hydroxyapatite reinforced dental restoration resin modified by sol-gel method
A sol-gel method and hydroxyapatite technology, which is applied in dental preparations, dentistry, dental prosthesis, etc., can solve problems such as poor interface bonding strength, achieve good mechanical properties, simple modification methods, and improve roughness Effect
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Embodiment 1
[0035] A preparation method of sea urchin-like multi-whisker hydroxyapatite reinforced dental restoration resin:
[0036] (1) Add 0.4M calcium nitrate tetrahydrate and 0.4M disodium ethylenediaminetetraacetate to 400mL deionized water successively and mechanically stir until completely dissolved, then gradually add 0.24M dodecahydrate and disodium hydrogen phosphate. The pH of the solution was adjusted to 12.5 with NaOH. Then, the above solution was placed in an oil bath equipped with a reflux device, and reacted at 105° C. for 60 minutes. The reaction product was centrifuged and washed three times with deionized water, and dried in a vacuum oven (70° C., 2 h), finally obtaining sea urchin-like multi-whisker hydroxyapatite.
[0037](2) Add 200mL of ethanol and 4mL of deionized water into a 250mL beaker, and after ultrasonic treatment for 20min, add 6g of the USHA obtained, and continue ultrasonic dispersion for 25min. Transfer to a magnetic stirrer at a rotational speed of 2...
Embodiment 2
[0048] (1) Add 0.4M calcium nitrate tetrahydrate and 0.4M disodium ethylenediaminetetraacetate to 400mL deionized water successively and mechanically stir until completely dissolved, then gradually add 0.24M dodecahydrate and disodium hydrogen phosphate. The pH of the solution was adjusted to 12.5 with NaOH. Then, the above solution was placed in an oil bath equipped with a reflux device, and reacted at 105° C. for 60 minutes. The reaction product was centrifuged and washed three times with deionized water, and dried in a vacuum oven (70° C., 2 h), finally obtaining sea urchin-like multi-whisker hydroxyapatite.
[0049] (2) Add 50 mL of ethanol and 1 mL of deionized water into a 250 mL beaker, and after ultrasonic treatment for 10 min, add 1.5 g of the USHA obtained, and continue ultrasonic dispersion for 25 min. Transfer to a magnetic stirrer at a rotational speed of 250r / min, then add 1.75mL of ammonia water and 1.5mL of ethyl orthosilicate dropwise in sequence, and react a...
Embodiment 3
[0053] (1) Add 0.4M calcium nitrate tetrahydrate and 0.4M disodium ethylenediaminetetraacetate to 400ml deionized water successively and mechanically stir until completely dissolved, then gradually add 0.24M dodecahydrate and disodium hydrogen phosphate. The pH of the solution was adjusted to 12 with NaOH. Then, the above solution was placed in an oil bath equipped with a reflux device, and reacted for 90 minutes at a temperature of 105°C. The reaction product was centrifuged and washed three times with deionized water, and dried in a vacuum oven (70° C., 2 h), to finally obtain sea urchin-shaped multi-whisker hydroxyapatite.
[0054] (2) Add 200mL of ethanol and 4mL of deionized water into a 250mL beaker, and after ultrasonic treatment for 20min, add 6g of the USHA obtained, and continue ultrasonic dispersion for 25min. Transfer to a magnetic stirrer at a rotational speed of 250r / min, then sequentially add 7mL of ammonia water and 6mL of ethyl orthosilicate dropwise, and rea...
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