A composite thermal insulator based on xonotlite and perlite

WenNi, Zichun Yang and Deping Chen Civil and Environmental Engineering school, University of Science and Technology Beijing, Beijing 100083, China; Naval Engineering University, Wuhan, 430033

摘 要：<正>A low cost thermal insulating material can be produced by compounding an active xonotlite slurry, fired-perlite, HOMOPAN fibers and glass fibers. The maximum service temperature of the product is 800C; linear shrinkage after 800℃×16 h firing is0.9%; the cold crushing strength is 1.56 MPa; the flexural strength at ambient temperature is 0.81 MPa; the thermal conductivity atambient temperature （25℃） is 0.056 and 0.128 W/（m·K） at 800℃. The production cost of such a composite is only 1/3 of that of thenormal xonotlite thermal insulators. It can substitute the normal xonotlite thermal insulators on most occasions with a similar cost to that of normal perlite products.

关键词：