Method for improving bioactivity of block HA bio-material
A biological material and bioactive technology, applied in the field of bioceramic material preparation, can solve problems such as poor mechanical properties, limit wide application, and reduced activity, and achieve the effects of low cost, easy industrialization, and promotion of regeneration
Inactive Publication Date: 2017-02-15
SHANGHAI UNIV
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The invention discloses a method for improving the bioactivity of a block HA bio-material. The method comprises the following steps: preparing HA nano-powder through a precipitating technology, spreading the HA nano-powder on a female die of a compacting die, and compacting the HA nano-powder through using a microcomputer controlled pressure in order to form an HA block; carrying out high temperature sintering on the HA block at a temperature not lower than 1500 DEG C, and cooling the sintered HA block with furnace in order to decompose the sintered HA block; and placing the decomposed HA block and NaHCO3 in a closed box, placing the closed box in a high temperature furnace, heating the closed box to a temperature not higher than 900 DEG C according to a rate not lower than 4 DEG C/min, keeping the temperature for 3 h, and cooling the obtained material with the furnace. The closed regeneration box is placed in the decomposed HA block, so high temperature volatilization of H2O is avoided; and NaHCO3 is placed in the closed box, and the closed box is heated from room temperature to the NaHCO3 decomposition temperature in order to decompose NaHCO3 and provide H2O with the weight 2 and 4 times the required weight of H2O in order to meet requirements of regeneration environment of the HA block. The method for improving bioactivity of block HA bio-material is a method for regenerating the HA block through introducing H2O required by regeneration to a closed space.
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