| Summary: | 碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系博碩士班 === 106 === In this study, organic modified silicate cement composites (SCs) were fabricated by using general mixing method, where commercial SC, water, coarse perlite (CP), concrete foaming agents, and organic modified CP as well as aerogel/coarse perlite (ACP) acted as substrate, medium, insulation aggregate, foaming agents, and organic modified aggregates, respectively. The ACPs were prepared by using negative pressure absorption method. The mechanic properties, thermal insulation and energy saving characteristics of SCs were studied by scanning electron microscope (SEM), fourier transform infrared spectrometer (FTIR), thermogravimetric analyzer (TGA), specific surface area and porosimetric analyzer (BET), contact angle, thermal conductivity analyzer, and compression strength instrument. Results showed that the addition of concrete foaming agents can effectively increase the number of void in the SC, resulting in the thermal conductivity and compressive strength are reduced. During the CP modification process, the cellular porous structure of CP can be destroyed, leading in an increase in the thermal conductivity, however, the compressive strength of SC is significantly increased due to the broken CP structure refill into to the gaps in the SC. The ACP can be successfully prepared by the negative pressure absorption method. As for thermal insulation and energy-saving analysis, SC-Phenyltrimethoxysilane-ACP (20 wt%) composite exhibits higher compressive strength (3.76 kgf/cm2), lower thermal conductivity (0.102 W/m·K), and higher energy saving rate (68.49%) than those of SC-ACPs after cured at 200°C.
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