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| SH固沙机理的微观探讨 | |
| 引用本文： | 王银梅,谌文武,韩文峰.SH固沙机理的微观探讨[J].岩土力学,2005,26(4):650-654. |
| 作者姓名： | 王银梅 谌文武 韩文峰 |
| 作者单位： | 1. 太原理工大学,太原,030024;兰州大学,资源环境学院,兰州,730000 2. 兰州大学,资源环境学院,兰州,730000 3. 兰州大学,资源环境学院,兰州,730000;天津城建学院,天津,300384 |
| 基金项目： | 国家863计划资助项目(No.2001AA322010) |
| 摘 要： | SH是新型高分子固化材料,可用于广大沙漠区固沙,为环境修复材料。采用红外光谱,扫描电镜结合电子能谱等现代分析方法,初步揭示了SH固沙的本质,从微观上探讨了SH固沙强度形成的机理。研究结果表明,SH与沙子结合以后,SH本身的官能团对沙子没有化学键的结合,只表现出微弱的氢键及范得华力的影响;固沙强度主要是物理化学作用而形成的。氢键作用、吸附作用和絮凝作用等赋予了沙子很好的机械强度和优良的耐水性能而达到固沙的目的。 |
| 关 键 词： | 高分子固化材料 固沙机理 红外光谱 扫描电镜 微观结构 |
| 文章编号： | 1000-7598-(2005)04-0650-05 |
| 收稿时间： | 2003-12-17 |
| 修稿时间： | 2003年12月17 |
Microstudy on mechanism of sand fixation with SH |
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| WANG Yin-mei,CHEN Wen-wu,HAN Wen-feng.Microstudy on mechanism of sand fixation with SH[J].Rock and Soil Mechanics,2005,26(4):650-654. | |
| Authors: | WANG Yin-mei CHEN Wen-wu HAN Wen-feng |
| Institution: | 1. Taiyuan University of Technology, Taiyuan 030024, China; 2. College of Earth and Environment, Lanzhou University, Lanzhou 730000, China; 3.Tianjin Institute of Urban Construction, Tianjin 300384, China |
| Abstract: | SH is a new polymer solidified material; it may be used for sand fixation in deserts. It is a repairing material for environment. In this paper, modern analytical methods have been used. These research methods include IR spectrum, scanning electron microscope (SEM) and X-ray energy dispersive spectrometer (EDS) techniques. Microstudy of the mechanism about sand fixation with SH has been made. The results show the importance of physicochemical action. This opens out the essence of sand fixation with polymer such as SH. The result indicates that the mechanism of sand fixation by SH is more complicated. It includes a set of physicochemical processes. After SH and sand being combined, the functional group of SH has no chemical bond to sand, it is only little hydrogen bond and Fan force influence of the strength. The strength of SH-fixated sand is the result of physicochemical action such as absorb, bridge, flocculate and ion exchange, etc. SH-fixated sand is not broken out in water, and resistance to wind erosion. |
| Keywords: | polymer solidified material sand fixation mechanism IR spectrum scanning electron microscope microstructure |
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