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对纳米蒙脱土(OMMT)进行改性,用改性后的蒙脱土对环氧丙烯酸酯(EA)涂层进行改性,并对改性后的OMMT/EA涂层进行了力学性能和热性能测试。研究表明,加入质量分数2%改性蒙脱土的OMMT/EA涂层性能最好。OMMT的加入可提高涂层的拉伸性能、附着力和硬度,并有效提高EA涂层的玻璃化温度,降低其线性热膨胀系数。电镜和XRD分析表明,OMMT在OMMT/EA涂层中以单层片层均匀分布。将涂有该涂层的光纤布拉格光栅(FBG)传感器埋入复合材料中,经一定温度与压力成型后,与涂有未改性EA涂层的FBG传感器采集到的信号进行对比,发现改性后涂层可明显降低FBG传感器信号滞后现象。
The nano-montmorillonite (OMMT) was modified, the epoxy acrylate (EA) coating was modified with modified montmorillonite, and the modified OMMT / EA coating was tested for mechanical properties and Thermal performance test. The research shows that the OMMT / EA coating with the mass fraction of 2% modified montmorillonite is the best. The addition of OMMT can improve the tensile properties, adhesion and hardness of the coating, and effectively increase the glass transition temperature of the EA coating and reduce its linear thermal expansion coefficient. Electron microscopy and XRD analysis showed that OMMT was uniformly distributed in the monolayer layer in the OMMT / EA coating. The optical fiber Bragg grating (FBG) sensor coated with the coating is buried in the composite material, and after a certain temperature and pressure are formed, compared with the signals collected by the FBG sensor coated with the unmodified EA coating, it is found that the modification After the coating can significantly reduce the FBG sensor signal hysteresis.