论文部分内容阅读
为研究铂-全氟磺酸(Pt-PFSA)复合材料的传感特性,首先,测试了在阶跃激励和正弦激励下,Pt-PFSA复合材料的响应输出电压;然后,采用化学镀方法,将铂原子沉积在由Nafion溶液制备的0.4mm厚的Nafion阳离子交换膜的两个表面上;最后,考察了含水量对Pt-PFSA复合材料输出电压的影响,预测了正弦激励下PtPFSA复合材料的传感性能,进行了不同频率的正弦激励实验。结果表明:采取保湿措施后,含水量变化导致的输出电压降低幅度低于5%;在阶跃激励信号下,当Pt-PFSA复合材料的应变为0.1%时,输出电压具有时延;给出了Pt-PFSA复合材料的灵敏系数表达式,当正弦激励信号频率为5.9Hz时,复合材料的灵敏系数为3.555 8mV/0.2%,得到的实验结果与预测吻合较好。研究为Pt-PFSA复合材料传感性能模型的建立奠定了基础。
In order to study the sensing characteristics of Pt-PFSA composites, the response output voltage of Pt-PFSA composites was tested under step excitation and sinusoidal excitation. Then, by electroless plating method, Platinum atoms were deposited on both surfaces of 0.4mm thick Nafion cation exchange membranes prepared from Nafion solution. Finally, the effect of water content on the output voltage of Pt-PFSA composites was investigated. It was predicted that the PtPFSA composites Sensing performance, conducted a different frequency sine excitation experiment. The results show that the output voltage decreases by less than 5% due to the change of water content when the moisture content is taken, and the output voltage has a delay when the strain of Pt-PFSA composite material is 0.1% under the step excitation signal. The sensitivity coefficient of Pt-PFSA composites is 3.555 8mV / 0.2% when the frequency of sine excitation signal is 5.9Hz. The experimental results are in good agreement with the prediction. The research laid the foundation for the establishment of the sensing performance model of Pt-PFSA composites.