Composites Part C: Open Access | |
Filler surface adsorption of mesogenic epoxy for LC Epoxy/MgO composites with high thermal conductivity | |
Miyuki Harada1 Saki Ota2 | |
[1] Corresponding author.;Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan; | |
关键词: Polymer composites; Liquid crystalline epoxy; Thermal conductivity; Surface treatment; | |
DOI : | |
来源: DOAJ |
【 摘 要 】
Mesogenic epoxies were adsorbed onto the surface of an MgO filler treated with an amino-silane coupling agent and the epoxy-adsorbed MgO filler was dispersed into the liquid crystalline (LC) epoxy matrix resin to develop a high thermal conductivity composite. The effect on the interfacial interaction and the free volume of the LC epoxy composite was investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD), and positron annihilation lifetime spectroscopy (PALS). The thermal conductivity of the obtained composite (3.16 W/(m∙K)) was remarkably higher than that of the nonadsorbed MgO system (1.93 W/(m∙K)) at almost the same content of 44–45 vol%. This significant improvement of the thermal conductivity can be attributed to the highly ordered structural formation that was induced by the π-π interaction effect of the mesogenic moieties between the adsorbed epoxies and the matrix resin.
【 授权许可】
Unknown