| 强化钠水玻璃粘结强度的新机制 |
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| 引用本文： | 王文清,黄乃瑜,许进,何泽芬.强化钠水玻璃粘结强度的新机制[J].华中科技大学学报(自然科学版),1994(9). |
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| 作者姓名： | 王文清 黄乃瑜 许进 何泽芬 |
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| 作者单位： | 戚墅堰机车车辆工艺研究所，华中理工大学材料科学与工程系 |
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| 基金项目： | 国家教委高等学校博士学科点专项科研基金 |
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| 摘 要： | 通过高倍透射电镜、电子探针、Ｘ射线衍射、扫描电镜等测试方法，对经过不同硬化工艺制得的钠水玻璃凝胶胶粒大小、结构、成分等进行了分析，发现强度高的胶粒细小、结构致密。认为强化钠水玻璃的粘结强度的机制在于抑制硬化过程中胶粒生长过大。采用能稳定或阻抑胶粒长大的化合物（有机或无机或复合物）有利于对钠水玻璃改性；使用有机酯类型的促硬剂、加热硬化、真空硬化等措施均有利于钠水玻璃凝胶的胶粒细化，有利于提高钠水玻璃砂的强度。
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| 关 键 词： | 钠水玻璃 胶粒大小 钠水玻璃改性 粘结强度 |
On the Improvement of the Bonding Strength of Sodium-Silicate-Bonded Sand |
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| Wang Wenqing, Huang Naiyu, Xu Jin, He Zefen.On the Improvement of the Bonding Strength of Sodium-Silicate-Bonded Sand[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1994(9). |
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| Authors: | Wang Wenqing Huang Naiyu Xu Jin He Zefen |
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| Institution: | Wang Wenqing; Huang Naiyu; Xu Jin; He Zefen |
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| Abstract: | The particle size,the structure and composition of the sodium silicate gel prepared by various hardening processes are investigated by means of TEM, electronic probe, X-ray diffraction and SEM,It has been found that no matter what the cured products are, thesmaller the particle size or the more compact the structure is,the higher the strength willbe. Hence,the crux of the matter is to inhibit the growth or to fine the particle size of thegel.Technical measures that can be taken include modifying the sodium silicate with suchsubstances as can stabilize the particle size or inhibit the growth of the particle during cur-ing,using ester as the hardener or performing heating or vacuum hardening. |
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| Keywords: | sodium silicate particle size of the gel modified sodium silicate bonding strength |
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