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首页> 外文期刊>Journal of Applied Polymer Science >Thermal Diffusivity of an Epoxy System as a Function of the Hardener Content
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Thermal Diffusivity of an Epoxy System as a Function of the Hardener Content

机译：环氧树脂体系的热扩散率与硬化剂含量的关系

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摘要

The influence on the thermal diffusivity of the changes induced on the macromolecular network of an epoxy-amine system by different hardener/resin ratios was experimentally investigated.For each hardener/resin ratio,the open photoacoustic cell technique was used to measure the thermal diffusivity.The thermal diffusivity data was correlated with the evolution of the characteristic infrared absorption bands of the opoxy and amine components using a fast Fourier transform spectrometer.The results show a sharp transition in the thermal diffusivity values at the beginning of the amine-rich domain,corresponding to a transformation from a rigid network to an amine saturated deformable structure.It is concluded that the open photoacoustic cell technique can be a useful monitoring tool for structural characterization and molecular evolution during the curing of this kind of system.
机译：实验研究了不同固化剂/树脂比例对环氧胺体系大分子网络的变化对热扩散系数的影响。对于每种固化剂/树脂比例，采用开放光声电池技术测量其热扩散系数。使用快速傅里叶变换光谱仪将热扩散率数据与环氧和胺成分的特征红外吸收带的演变相关联，结果表明，富胺域开始处的热扩散率值发生了急剧变化，相应结论是，开放光声细胞技术可以作为一种有用的监测工具，用于在此类系统固化过程中进行结构表征和分子演化。

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