New process for making bio-material
    55.
    发明专利
    New process for making bio-material 审中-公开
    制作生物材料的新工艺

    公开(公告)号:JP2008100905A

    公开(公告)日:2008-05-01

    申请号:JP2007271338

    申请日:2007-10-18

    Abstract: PROBLEM TO BE SOLVED: To obtain glass having a large size and containing CaO and P 2 O 5 . SOLUTION: A crack-free glassy object is formed by forming an aqueous or water-containing dispersion, adding P 2 O 5 and CaO, adding an acid in order to reach a pH-value of 2±0.5, adding tetraethyl ortho-silicate (TEOS), titrating the sol by means of ammonium hydroxide till pH 4.1±0.2, pouring the sol so obtained into a mold, substituting a solvent in the gel pores with an aprotic solvent, setting gel in a pressure chamber, fluxing an inert gas into the pressure chamber, heating the pressure chamber over a programmed time period to achieve pre-determinate temperature and pressure values lower than the relevant critical value of the gel solvent, evaporating the solvent, depressurizing the pressure chamber, washing by an inert gas, cooling the dried gel, taking out the gel from the pressure chamber and heating at a prefixed temperature to sinter. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题:获得具有大尺寸并含有CaO和P 2 5 的玻璃。

    解决方案:通过形成含水或含水分散体,加入P 2 5 和CaO,依次加入酸形成无裂纹玻璃状物体 达到2±0.5的pH值,加入原硅酸四乙酯(TEOS),用氢氧化铵滴定溶胶至pH 4.1±0.2,将得到的溶胶倒入模具中,置换凝胶孔中的溶剂 使用非质子溶剂,在压力室中凝固凝胶,将惰性气体向压力室中通入,在编程的时间段内加热压力室,以达到低于凝胶溶剂相关临界值的预定温度和压力值, 蒸发溶剂,减压压力室,用惰性气体洗涤,冷却干燥的凝胶,从压力室取出凝胶,并在预定温度下加热烧结。 版权所有(C)2008,JPO&INPIT

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