| NaOH激发无机聚合物的水热合成及其性能研究 |
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| 引用本文： | 李兆恒,陈晓文,张君禄,杨永民,王立华,汤跃. NaOH激发无机聚合物的水热合成及其性能研究[J]. 广东水利水电, 2016, 0(8): 7-12. DOI: 10.3969/j.issn.1008-0112.2016.08.002 |
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| 作者姓名： | 李兆恒 陈晓文 张君禄 杨永民 王立华 汤跃 |
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| 作者单位： | 1. 广东省水利水电科学研究院，广东省水利重点科研基地，广东 广州 510635; 华南理工大学，广东 广州 510640;2. 广东省水利水电科学研究院，广东省水利重点科研基地，广东 广州 510635;3. 成都建筑材料工业设计研究院有限公司,四川 成都,610051 |
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| 基金项目： | 广东省水利科技创新项目(2015-10)，中国博士后科学基金(2016M590776)。 |
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| 摘 要： | 以NaOH为碱性激发剂,粉煤灰与偏高岭土为前驱体材料进行研究,采用水热合成方法制备无机聚合物。通过单因素试验和正交试验,以强度为指标确定最佳水固比、 NaOH浓度、粉煤灰掺量、蒸养时间和温度。并研究了不同配比试样的抗压强度、流动性能,通过XRD分析其反应产物。结果表明,采用水热合成的方法可以显著提高无机聚合物的强度,同时在进行水热合成之前进行室温下的预养护有利于强度的提高。最优工艺参数为：粉煤灰掺量50%, NaOH溶液为10 mol/L,60℃热固化4 h后脱模,经室温养护24 h,在100℃蒸养24 h可制得地强度高达45．5 MPa聚合物材料。
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| 关 键 词： | 无机聚合物 水热合成 偏高岭土 粉煤灰 NaOH |
| 收稿时间： | 2016-07-08 |
| 修稿时间： | 2016-07-08 |
Hydrothermal Synthesis and Properties of Geopolymer Activated by NaOH |
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| LI Zhaoheng,CHEN Xiaowen,Zhang Junlu,YANG Yongmin,WANG Lihua and TANG Yue. Hydrothermal Synthesis and Properties of Geopolymer Activated by NaOH[J]. Guangdong Water Resources and Hydropower, 2016, 0(8): 7-12. DOI: 10.3969/j.issn.1008-0112.2016.08.002 |
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| Authors: | LI Zhaoheng CHEN Xiaowen Zhang Junlu YANG Yongmin WANG Lihua TANG Yue |
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| Affiliation: | Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Scientific Research Base, Guangzhou, 510635, China;South China University of Technology, Guangzhou 510640, China,Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Scientific Research Base, Guangzhou, 510635, China,Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Scientific Research Base, Guangzhou, 510635, China,Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Scientific Research Base, Guangzhou, 510635, China;South China University of Technology, Guangzhou 510640, China,Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Scientific Research Base, Guangzhou, 510635, China and Chengdu Design & research Institute of Building materials industry CO., LTD., Chengdu 610051, China |
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| Abstract: | In this research, the geopolymer materials are hydrothermally synthesized by using NaOH as alkali-activator, fly ash and metakaolin as raw materials. The optimal water-solid ratio, NaOH concentration, the content of fly ash, steam-curing temperature and steam-curing time are determined. At last, the compressive strength and the rheological properties of different formulas are char-acterized, and the reaction products are analyzed by XRD. The results of experimental indicated that before hydrothermal synthesis, curing at room temperature is benefit for strength development. Utilizing hydrothermal synthesis method could greatly improve the strength of geopolymer. Finally, the optimized gropolymer is prepared at the fly ash content 50%, NaOH concentration 10 mol/L, demoulded after thermo-curing for 4 hours at 60 ℃, cured at room temperature for 24 hours, and autoclaved 100℃ for 24 hours, and the compressive strength was about 45. 5MPa. |
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| Keywords: | Geopolymer Hydro-thermal synthesis Metakaolin Fly ash NaOH |
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