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膨胀珍珠岩是一种白色、多孔的粒状物料,由酸性火山玻璃熔岩(即珍珠岩)经过破碎、预热、焙烧而制成。其容重为0.1～0.15T/m~3,导热系数为0.04千卡/米·时·℃。由于具有保温性能好、容重轻、易成型和成本低等优点,是一种理想的保温冒口材料。 本试验对膨胀珍珠岩保温胃口的成份配比、成型工艺及保温性能进行了探讨。同时与膨胀蛭石保温冒口、发泡石膏保温冒口进行了比较。
Expanded perlite is a white, porous, granular material made from acidic volcanic glass lava (ie perlite) crushed, preheated and roasted. The bulk density of 0.1 ~ 0.15T / m ~ 3, the thermal conductivity of 0.04 kcal / m · ℃. Because of its good insulation properties, light weight, easy molding and low cost, it is an ideal thermal riser material. In this experiment, the ratio of the ingredients of the thermal insulation appetizer of expanded perlite, the molding process and the thermal insulation performance were discussed. At the same time with the expansion of vermiculite insulation riser, foam gypsum insulation riser were compared.