不同条件下集成缓冲材料导热系数的研究

A Study on Thermal Conductivity of Integrated Cushioning Materials under Different Conditions

缓冲材料是高放废物处置库的最后一个人工屏障,其导热性是评估整个处置库热导性能的重要参数。文章则是针对缓冲材料在不同的含水率、干密度及不同含量条件下,采用基于瞬变平面热源法的Hot Disk热常数分析仪对集成缓冲材料的导热性能进行研究,结果表明,集成缓冲材料的导热系数与添加剂含量呈正比例增大,与含水率和干密度含量呈正相关性。

Cushioning material is the last artificial barrier of high-level radioactive waste repository,and its thermal conductivity is an important parameter to evaluate the thermal conductivity of the whole repository.In this paper,Hot Disk thermal constant ana原lyzer based on transient plane heat source method is used to study the thermal conductivity of integrated cushioning materials under different moisture content,dry density and different contents.The results show that the thermal conductivity of integrated cushioning materials is better than that of integrated cushioning materials.The thermal conductivity of the integrated cushioning material increases in direct proportion to the additive content,and it is positively correlated with the moisture content and the dry density content.