| 盐酸沉淀法制备纳米SiO_2/粉煤灰微珠复合颗粒 | |
| 魏征 ; 杨冰 ; 赵鸣 ; 姚有为 ; 杨玉芬 ; 盖国胜 ; WEI Zheng ; YANG Bing ; ZHAO Ming ; YAO Youwei ; YANG Yufen ; GAI Guosheng | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 粉煤灰微珠 水玻璃 纳米SiO2 功能化改性 核壳结构 fly ash cenoshpere water glass nano SiO2 functionalization core-shell structure TQ127.2 TQ536 |
| 其他题名 | Preparation of nano SiO_2/cenosphere composites by chemical precipitation |
| 中文摘要 | 以工业级粉煤灰微珠和模数为3.3的水玻璃溶液为原料,采用盐酸沉淀法,利用非均相形核沉积原理,在微米级粉煤灰颗粒表面包覆一层纳米SiO2颗粒.通过扫描电子显微镜、X射线衍射仪、傅里叶转换红外线光谱仪等对包覆产物进行表征,制备得到了具有"核-壳"结构的微珠/SiO2复合结构颗粒,同时SiO2包覆层是以Si-O-Si键的形式结合于微珠表面并不断生长.对这种二级结构复合颗粒进行有机疏水改性,通过"涂敷法"构建超疏水性表面,表面平均接触角为152.4°,达到超疏水性能要求.; The industrial fly ash cenoshpere and water glass solution(the modulus is 3.3)were used as raw materials to coat a layer of nano SiO2particles on the surface of fly ash cenospheres by means of chemical precipitation and heterogeneous nucleation.A core-shell structured nano SiO2/cenoshpere composites was prepared which was confirmed by SEM,XRD and FTIR. The SiO2layer nucleated and grew on the surface of cenosphere by Si-O-Si bond.The super-hydrophobic surface of the composites was formed by treating the composites with organic reagent.The average contact angle for the prepared surface is 152.4�which indicates that the prepared surface is super hydrophobic. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/141703]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 魏征,杨冰,赵鸣,等. 盐酸沉淀法制备纳米SiO_2/粉煤灰微珠复合颗粒[J],2016, 2016. |
| APA | 魏征.,杨冰.,赵鸣.,姚有为.,杨玉芬.,...&GAI Guosheng.(2016).盐酸沉淀法制备纳米SiO_2/粉煤灰微珠复合颗粒.. |
| MLA | 魏征,et al."盐酸沉淀法制备纳米SiO_2/粉煤灰微珠复合颗粒".(2016). |
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