Summary
This technical report discusses the dimensional stabilization of polyester-based polymers used in electronic components, particularly in mechanical devices like relays and switches. The report outlines how the dimensions of these molded products can change due to heat application, which can adversely affect their performance. The authors, IMAIZUMI Toyohiro and OTANI Osamu, present findings on the effectiveness of coarsening polymer crystal sizes through a preliminary heat treatment process. This process is shown to improve thermal stability and suppress shape changes in molded products. The report details the experimental methods used, including linear expansion measurements and X-ray diffraction analysis, to evaluate the effects of heat treatment on the dimensional stability of the polyester polymers. Results indicate that heat treatment can significantly reduce dimensional changes by altering the crystal structure of the polymers, thereby enhancing their performance in electromechanical applications.
