一、前言随着我国保温材料和建筑材料的扩大生产和使用,迫切要求我国自己定型生产测试精度高的导热系数测定仪器。为此由清华大学、河南建筑工程材料研究所和天津建筑仪器厂共同试制成功“双平板导热系数测定仪”,并于1980年通过了鉴定。 I. Introduction With the expansion of production and use of thermal insulation materials and building materials in our country, it is urgent to require our own stereotypes to produce thermal conductivity measurement instruments with high testing accuracy. To this end by the Tsinghua University, Henan Institute of Construction Materials and Tianjin Building Instrument Factory successful trial of “double flat thermal conductivity detector”, and in 1980 passed the appraisal.