纳米SiO<sub>2</sub>/PUA-EA布拉格光栅传感器涂层耐热性能评估

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纳米SiO₂/PUA-EA布拉格光栅传感器涂层耐热性能评估

1.
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
2.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

摘要: 对SiO₂/聚氨酯丙烯酸酯（PUA）-环氧丙烯酸酯（EA）复合材料及PUA-EA纯树脂体系进行热失重及热分解DSC对比分析。结果表明，SiO₂/PUA-EA热分解开始温度为143.8 ℃，在320 ℃出现大量失重现象，均高于PUA-EA体系。SiO₂/PUA-EA作为光栅涂层与裸纤和纯树脂涂层相比，更能准确监测复合材料固化过程，并且SiO₂/PUA-EA固化后残余应力约为128 kPa，低于之前报道。SEM显示，SiO₂/PUA-EA与光纤内核之间结合良好，未出现分层现象。
- SiO₂ /
- SiO₂/PUA-EA /
- 光栅涂层 /
- 固化检测 /
- 残余应力
Abstract: Compared with polyurethane acrylate (PUA)-epoxy acrylate (EA), the SiO₂/PUA-EA shows better thermal properties by thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC). The initial decomposition temperature is 143.8 ℃, and the most mass loss occur at 320 ℃ for SiO₂/PUA-EA, both of which are higher than those of pure resin. The SiO₂/PUA-EA can be used as coating for FBG monitoring for curing of composites accurately. The residual stress for hybrid materials is 128 kPa, lower than that reported previously. SEM shows that no delamination occurs between the SiO₂/PUA-EA and the core of optical fibers indicating their good binding.
- SiO₂ /
- SiO₂/PUA-EA /
- coating for FBG /
- monitoring for curing /
- residual stress