Abstract It is proposed to transfer the capabilities of a high sensitivity photothermal technique, developed by the group and widely used in the study of thermal properties of ceramics, metals and glass, to the study of polymer composites. The technique uses a sensing beam for the measurement of the thermal response of the sample due to local effects induced by heating with a modulated pump laser. With a simple spatial sweep of the beams on the sample surface, information on a micrometric scale of the thermal diffusivity of the material, distribution of phases and pores is obtained. Post-process analysis allows calculating average values of relevant properties such as thermal diffusivity, degree of crystallinity and distribution of aggregates. These measurements are performed at low laser powers (of the order of micro watts) avoiding the damage of the studied samples and turning this technique into a powerful tool of non-destructive characterization.

中文翻译：

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光热显微镜在聚合物复合材料研究中的应用

摘要 建议将课题组开发并广泛用于陶瓷、金属和玻璃热性能研究的高灵敏度光热技术的能力转移到聚合物复合材料的研究中。该技术使用传感光束测量样品的热响应，这是由于用调制泵浦激光器加热引起的局部效应。通过对样品表面的光束进行简单的空间扫描，可以获得材料热扩散率、相和孔隙分布的微米级信息。后处理分析允许计算相关特性的平均值，例如热扩散率、结晶度和聚集体分布。