Shimonosono Taro, Hirata Yoshihiro, Nishikawa Kyohei, Sameshima Soichiro, Sodeyama Kenichi, Masunaga Takuro, Yoshimura Yukio
Department of Chemistry, Biotechnology, and Chemical Engineering, Kagoshima University, Kagoshima 890-0065, Japan.
Shirasu R&D Laboratory, Regional Resource Division, Kagoshima Prefectural Institute of Industrial Technology, Kagoshima 899-5105, Japan.
Materials (Basel). 2018 Mar 13;11(3):420. doi: 10.3390/ma11030420.
A zeolite (mordenite)-pore-phenol resin composite and a zeolite-pore-shirasu glass composite were fabricated by hot-pressing. Their thermal conductivities were measured by a laser flash method to determine the thermal conductivity of the monolithic zeolite with the proposed mixing rule. The analysis using composites is useful for a zeolite powder with no sinterability to clarify its thermal properties. At a low porosity <20%, the thermal conductivity of the composite was in excellent agreement with the calculated value for the structure with phenol resin or shirasu glass continuous phase. At a higher porosity above 40%, the measured value approached the calculated value for the structure with pore continuous phase. The thermal conductivity of the monolithic mordenite was evaluated to be 3.63 W/mK and 1.70-2.07 W/mK at room temperature for the zeolite-pore-phenol resin composite and the zeolite-pore-shirasu glass composite, respectively. The analyzed thermal conductivities of monolithic mordenite showed a minimum value of 1.23 W/mK at 400 °C and increased to 2.51 W/mK at 800 °C.
通过热压制备了沸石（丝光沸石）-孔隙-酚醛树脂复合材料和沸石-孔隙-白榴火山灰玻璃复合材料。采用激光闪光法测量它们的热导率，以根据所提出的混合规则确定整体沸石的热导率。对于没有烧结性的沸石粉末，使用复合材料进行分析有助于阐明其热性能。在低孔隙率<20%时，复合材料的热导率与具有酚醛树脂或白榴火山灰玻璃连续相结构的计算值高度吻合。在孔隙率高于40%时，测量值接近具有孔隙连续相结构的计算值。室温下，沸石-孔隙-酚醛树脂复合材料和沸石-孔隙-白榴火山灰玻璃复合材料的整体丝光沸石热导率分别评估为3.63 W/mK和1.70 - 2.07 W/mK。整体丝光沸石的分析热导率在400℃时显示出最小值1.23 W/mK，并在800℃时增加到2.51 W/mK。
