| 摘要: |
| 使用硅烷偶联剂对氧化石墨烯进行功能化改性，并采用傅里叶红外光谱（FTIR）、拉曼光谱和X射线衍射（XRD）来表征氧化石墨烯改性前后结构变化；对功能化氧化石墨烯/聚氨酯涂层与普通聚氨酯涂层进行力学性能测试以及模拟风沙冲蚀试验.结果表明：硅烷偶联剂成功对氧化石墨烯进行了共价键改性，且改性后的功能化氧化石墨烯在聚氨酯中具有良好的分散性与相容性；涂层的硬度随着功能化氧化石墨烯含量的增大而先增加后降低；当功能化氧化石墨烯含量为05%时，涂层的冲蚀率明显降低，抗风沙冲蚀性能显著增强，模拟特强沙尘暴冲蚀后涂层的使用寿命要比普通聚氨酯涂层延长至少08a. |
| 关键词: 风沙环境 功能化氧化石墨烯 聚氨酯涂层 冲蚀机理 |
| DOI：103969/j.issn.1007 9629202103020 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（11862022；11162011；51468049；11662012）；内蒙古自治区自然科学基金资助项目（2018MS05047）；内蒙古自治区草原英才资助项目；内蒙古自治区青年科技英才支持计划项目 |
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| Wind Sand Erosion Resistance of Functional Graphene Oxide/Polyurethane Coatings |
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HAO Yunhong, MA Sihan, LI Jie, XUAN Jiaoyu, LIU Yanchen
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School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
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| Abstract: |
| Silane coupling agent was used to modify graphene oxide, and Fourier infrared spectroscopy(FTIR), Raman spectroscopy and X ray diffraction(XRD) were employed to characterize the structure changes of graphene oxide before and after modification. The functional graphene oxide/polyurethane coating and ordinary polyurethane coating were sent to mechanical performance test and simulated wind sand erosion test. The results show that the silane coupling agent is able to successfully modify the graphene oxide by covalent bonding, and the functional graphene oxide has good dispersibility and compatibility in polyurethane; the hardness of the coating increases first and then decreases with the increasing functional graphene oxide content; when the functional graphene oxide content is 05%, the erosion rate of the coating is significantly reduced, and the wind sand erosion resistance performance is significantly improved. After simulating extra strong sandstorm erosion, the service life is longer than ordinary polyurethane coating by at least 08 a. |
| Key words: aeolian environment functional graphene oxide polyurethane coating erosion mechanism |
