SUPER-HYDROPHOBIC ELECTROTHERMAL EPOXY RESIN COMPOSITE MATERIAL AND PREPARATION AND SELF-REPAIRING METHOD THEREFOR
申请人:SOOCHOW UNIVERSITY
公开号:US20200392299A1
公开(公告)日:2020-12-17
Superhydrophobic electrothermal epoxy composites, their preparation and a self-healing method are disclosed. 1,4,5-oxadithiepane-2,7-dione and methylhexahydrophthalic anhydride were mixed and cured with epoxides to get self-healable epoxy resins; carbon nanotube/self-healable epoxy resin prepolymers were coated on self-healable epoxy resins and cured to get electrothermal epoxy composites; modified superhydrophobic copper powders were adhered on electrothermal epoxy composites and cured to get a kind of superhydrophobic electrothermal epoxy composites. The thermal resistance of superhydrophobic electrothermal epoxy composites is superior to existed technical solutions and they can simultaneously repair cracking and delamination and the healed samples still exhibit excellent superhydrophobicity. These merits of superhydrophobic electrothermal epoxy composites provided in this invention can meet the harsh requirements of self-healing and removing ice on surfaces of wind turbine blades, suggesting good abilities of guaranteeing service safety and lifespan of wind turbine blades.
本发明揭示了超疏水电热环氧复合材料,它们的制备方法以及一种自修复方法。将1,4,5-噁二硫丙烷-2,7-二酮和甲基己氢酞酸酐与环氧树脂混合并固化,得到可自修复的环氧树脂;碳纳米管/可自修复环氧树脂预聚物涂覆在可自修复环氧树脂上并固化,得到电热环氧复合材料;修改后的超疏水铜粉粘附在电热环氧复合材料上并固化,得到一种超疏水电热环氧复合材料。超疏水电热环氧复合材料的热阻优于现有技术解决方案,它们可以同时修复开裂和剥离,并且修复后的样品仍然表现出优异的超疏水性。本发明提供的超疏水电热环氧复合材料的这些优点可以满足风力涡轮叶片表面自修复和除冰的严格要求,表明其具有保障风力涡轮叶片使用安全和寿命的良好能力。