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OALib Journal期刊
ISSN: 2333-9721
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纳米sio2对硅酸三钙基骨水泥性能的影响
DOI: 10.3969/j.issn.1671-7627.2011.04.007, PP. 28-33
Keywords: 纳米sio2,硅酸三钙,骨水泥
Abstract:
研究纳米sio2对硅酸三钙(ca3sio5,简称c3s)基骨水泥性能的影响。结果表明:纳米sio2的掺入,可以加快c3s的水化进程，但延缓了浆体的凝结。纳米sio2与ca(oh)2反应生成较低n(ca)／n(si)的csh凝胶,降低了固化体中ca(oh)2的含量。纳米sio2与ca(oh)2反应生成的csh凝胶呈网络交织状结构,既可对固化体起到密实填充作用,又可增强固化体的胶凝性能,从而提高固化体的力学性能。固化体中ca(oh)2的含量随纳米sio2掺入量增加而降低;当sio2掺入量达到6％时,固化体中csh凝胶的平均n(ca)／n(si)开始降低。
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