Abstract
To better understand the effect of nano-TiO2 (NT) on polymer-sulphoaluminate cement composite coating (PSCC), the rheological, mechanical, water-repellent and photocatalytic properties were systematically investigated. The results reveal that NT can not only improve the workability and mechanical properties but also give PSCC satisfactory photocatalytic property. The optimum content of NT is 0.4–0.6%. It can enhance rheological properties leading to a better workability. NT, as an active site, can optimize network structure between polymer and cement hydration, leading to bond and tensile strength of PSCC increase by 59 and 25%, respectively. Moreover, it can sharply decrease the water absorption by 17.6%. In addition, the RhB degradation ratio of PSCC can reach 76.1% under 5 h UV radiation when the content of NT is 0.6%. Therefore, PSCC modified by NT has such advantages as both flexibility and rigidity, excellent water-repellent property and promising photocatalytic property.
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Acknowledgements
This Research is supported by the National Key Research and Development Plan of China (No. 2016YFB0303505), the National Natural Science Foundation of China (Nos. 51602126 and 51672108), China Postdoctoral Science Foundation (No. 2017M622118), State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology) (No. SYSJJ2018-12), the 111 Project of International Corporation on Advanced Cement-based Materials (D17001) and University of Jinan Postdoctoral Science Foundation (No. XBH1716).
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Zhao, P., Wang, H., Wang, S. et al. Assessment of Nano-TiO2 Enhanced Performance for Photocatalytic Polymer-Sulphoaluminate Cement Composite Coating. J Inorg Organomet Polym 28, 2439–2446 (2018). https://doi.org/10.1007/s10904-018-0923-7
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DOI: https://doi.org/10.1007/s10904-018-0923-7