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注浆成型-常温常压干燥制备隔热块体材料
Authors
张明灿
曾人杰
Publication date
20 September 2011
Publisher
Abstract
以二氧化硅气凝胶为基体,二氧化钛为红外遮光剂,E玻纤为骨架制备出有一定压缩强度的隔热块体材料;分别测样品的压缩强度R、热导率λ和常温(25℃)体积电阻率ρ。结果表明:pH=8~9时,含水料浆的分散情况较好;经过730℃处理0.5h的样品,与美国材料与试验协会的标准ASTM C533—85比较,R值0.41MPa符合,密度D=151kg.m-3较低;样品在常温和480℃时,常压下的热导率λn分别为0.036W.m-1.K-1和0.061W.m-1.K-1,低于或远低于一般隔热材料。同时系统研究了以水泥熟料为黏结剂、采用注浆成型-常温常压干燥制备隔热块体材料,原料和样品都无毒,制备工艺简单,成本低,容易实现产业化
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Last time updated on 16/06/2016