| 水玻璃粘结剂的固化和粉化机理研究 |
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| 引用本文： | 陈永.水玻璃粘结剂的固化和粉化机理研究[J].科学技术与工程,2010,10(1). |
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| 作者姓名： | 陈永 |
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| 作者单位： | 硅锆钛资源综合开发与利用海南省重点实验室,海南优势资源化工材料应用技术教育部重点实验室,海南大学,海口,570228 |
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| 基金项目： | 国家自然科学基金(50762003);;海南省自然科学基金(807009);;海南省教育厅项目(Hjkj2008-03)资助 |
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| 摘 要： | 以沙子为骨料,水玻璃作为黏结剂,三氯化铝作为固化剂,制备成大尺寸多孔沙砖,研究水玻璃黏结剂的固化机理和粉化机理。通过采用红外和X射线衍射仪测试在不同环境和不同固化时间黏结剂的结构变化和官能团变化,发现水玻璃凝胶在干燥环境不断脱水,其中的Si—O—Al键含量随时间延长而增加,形成稳定的网状交联结构;在潮湿环境,受到羟基作用使Si—O—Al键断裂而导致黏结剂粉化。
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| 关 键 词： | 水玻璃 粉化 红外 |
| 收稿时间： | 2009/9/29 0:00:00 |
| 修稿时间： | 2009/10/13 0:00:00 |
Mechanisms of solidification and pulverization of sodium silicate binder |
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| Chen Yong.Mechanisms of solidification and pulverization of sodium silicate binder[J].Science Technology and Engineering,2010,10(1). |
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| Authors: | Chen Yong |
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| Institution: | Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources/a>;Ministry of Education Key Laboratory of Application Technology of Hainan Superior Resources Chemical Materials/a>;Hainan University/a>;Haikou 570228/a>;P.R.China |
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| Abstract: | The solidification and powder mechanisms of sodium silicate binder were investigated using aluminum chloride as a curing agent.Through the analysis of functional group change and structure change of water glass binder in the dry and humid environment during different time,it was found that the number of Si-O-Al bond is increased as the time increase in dry enviroment,leading to increasing the strength of water glass binder.Whereas the Si-O-Al bond is damaged resulting in the pulverization of water glass bin... |
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| Keywords: | sodium silicate pulverization infrared |
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