面向旋转组件温度监测的量子点传感器性能强化研究

Research on Performance Enhancement of Quantum Dot Sensors for Temperature Monitoring of Rotating Components

全无机钙钛矿(Cs Pb Br3)量子点因其优异的光学性能在荧光温度传感器领域展现了巨大潜力。围绕高油污强干扰环境下滚动轴承内圈、保持架等旋转组件温度监测问题,针对原位生长策略不可控导致的Cs Pb Br3量子点荧光不均匀问题,提出基于静电纺丝原理制备包覆聚偏二氟乙烯(Polyvinylidene difluoride,PVDF)纤维膜的Cs Pb Br3量子点,结合正交试验法优化传感器制备工艺,并利用微观形貌表征分析手段验证其有效性。在此基础上,进一步提出利用有机硅树脂(Silicone resin,SR)涂覆工艺提升钙钛矿量子点传感器的热稳定性。最后,基于轴承保持架温度监测试验验证了静电纺丝技术结合SR涂覆工艺对于提升钙钛矿量子点传感器监测性能的有效性。

All-inorganic cesium lead halide perovskite(CsPbBr3) quantum dots have shown great potential in the field of fluorescence temperature sensors due to their excellent optical properties. Focusing on the non-uniform fluorescence of CsPbBr3 quantum dots caused by uncontrollable in-situ crystallization strategy which is revolved around the temperature monitoring problem of bearing rotating components(bearing inner ring, bearing cage, et al) under high oil pollution and strong interference environment, a preparation-optimization method of CsPbBr3 quantum dots coated with polyvinylidene difluoride(PVDF), whose effectiveness is verified by means of microscopic morphology characterization, is proposed based on electrospinning technology and orthogonal experiment method, What’s more, silicone resin(SR) coating process is used to improve the thermal stability of the perovskite quantum dot sensor. Finally, through temperature monitoring experiment of the bearing cage, it is demonstrated that the temperature monitoring performance of perovskite quantum dot sensor can be effectively enhanced by using electrospinning technology combined with SR coating process.