球磨法——一种制备氧化石墨烯改性水泥基材料的可替代性分散方法

景国建; 叶正茂; 李成; 崔健; 王树贤; 程新

doi:10.1016/S1872-5805(19)60032-6

球磨法——一种制备氧化石墨烯改性水泥基材料的可替代性分散方法

doi: 10.1016/S1872-5805(19)60032-6

1.
济南大学材料科学与工程学院, 山东济南 250022;
2.
济南大学建筑材料制备与测试技术重点实验室, 山东济南 250022

基金项目: 国家自然科学基金（51772129，51702118，U1806222）；高层次人才启动基金（济南大学，511-1008395）；山东省高等学校科技计划项目（J18KA016）；国家重点研发计划（2016YFB0303505）；111国际合作项目-先进水泥基材料（D17001）.

详细信息

通讯作者:
叶正茂.E-mail:mse_yezm@ujn.edu.cn;程新.E-mail:ujn_chengxin@ujn.edu.cn

中图分类号: TQ127.1⁺1
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- 文章访问数: 630
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- 被引次数: 0
出版历程
- 收稿日期: 2019-10-02
- 录用日期: 2020-01-03
- 修回日期: 2019-11-29
- 刊出日期: 2019-12-28

A ball milling strategy to disperse graphene oxide in cement composites

1.
School of Materials Science & Engineering, University of Jinan, Jinan 250022, China;
2.
Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, Jinan 250022, China

Funds: National Natural Science Foundation of China (51772129, 51702118, U1806222); Start-up Funding for High-Level Talents (University of Jinan, 511-1008395); Shandong Province Higher Educational Science and Technology Program (J18KA016); National Key Research and Development Program (2016YFB0303505); 111 Project of International Corporation on Advanced Cement based Materials (D17001).

摘要

摘要: 氧化石墨烯的分散性对水泥基材料的性能有着重要的影响。目前，最普遍的分散方法是利用超声和分散剂先将氧化石墨烯分散在水中，进而与水泥颗粒搅拌成型。本文介绍了一种球磨的策略来改进氧化石墨烯在水泥基体中的分散性。分散的过程是将氧化石墨烯、水泥熟料和二水石膏在行星磨中进行研磨混合。结果表明：氧化石墨烯改性的水泥浆体抗压强度提高。球磨过程对氧化石墨烯的形貌影响不大，但引入了很多的缺陷。氧化石墨烯可以加速水泥水化，细化水泥石的孔结构。球磨法可以作为一种制备氧化石墨烯改性水泥基材料的新方法。
- 氧化石墨烯 /
- 水泥基体 /
- 球磨策略 /
- 抗压强度 /
- 水化行为
Abstract: Ball milling was used to improve the dispersion of GO in a cement matrix in a planetary ball mill. Results indicated that the process had a negligible effect on the morphology of the GO but led to a 6.8% increase of the number of defects it contained. By adding 0.03 wt.% GO to the cement paste, its compressive strength increased by 9%, and the heat of hydration was increased 28%. The addition of GO accelerated the cement hydration, and decreased the porosity and pore size of the resulting cement paste, which were ascribed to the defects developed during ball milling and the functional groups on the GO that acted as nucleation sites for crystal growth during hydration. Ball milling provided an alternative method for the fabrication of GO-reinforced cement-based composites.
- Graphene oxide /
- Cement matrix /
- Ball milling strategy /
- Compressive strength /
- Hydration behavior

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