渡槽保温材料的制备与性能研究  

Preparation and Properties of Thermal Insulation Material for Aqueduct

作　　者：李文超[1] 余剑英[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉430070

出　　处：《武汉理工大学学报》2009年第4期37-40,共4页Journal of Wuhan University of Technology

基　　金："十一五"国家科技支撑计划(2006BAB04A05)

摘　　要：以玻化微珠为保温骨料,研究了玻化微珠、海泡石纤维、可再分散乳胶粉对渡槽保温材料性能的影响,并根据渡槽运行极限工况计算了保温层厚度与渡槽侧壁内外温差之间的关系。研究表明:玻化微珠掺量为45%,海泡石纤维掺量为6%,可再分散乳胶粉掺量为1.2%时,保温材料的综合性能优异,制得的渡槽保温材料导热系数为0.079W/(m.K),抗压强度和粘结强度分别为2.0 MPa和0.23 MPa,计算表明该材料用于渡槽保温适宜厚度为3 cm。The thermal insulation material for aqueduct is prepared by using glazed hollow bead as the thermal insulation aggregate. The effect of glazed hollow bead, sepiolite fibre, and re-dispersible latex powder on the properties of the thermal insulation material for aqueduct were investigated. And the relationship between thickness of the thermal insulation material and temperature difference between surface and interior of the sidewall of the aqueduct was calculated in limit working condition. The results show that the thermal insulation material exhibits excellent comprehensive properties when the content of glazed hollow bead is 45%, sepiolite fiber is 6% and the re-dispersible latex powder is 1.2%. The thermal conductivity, the compressive strength and the bonding strength of the thermal insulation material is 0. 079 W/（m-K）, 2.0 MPa and 0.23 MPa, respectively. And the suitable thickness of the thermal insulation material used for aqueduct is 3 cm.

关 键 词：渡槽 保温材料 玻化微珠 温度应力 

分 类 号：TU279.72[建筑科学—建筑设计及理论]