论文部分内容阅读
一、概述导热系数是材料重要热物理性能之一,是鉴别材料保温性能好坏的主要标志,因此准确测定该参数是十分必要的。本文介绍的常低温双平板导热系数测定仪是用于测量导热系数为0.029～1.16W/m·K范围内的建筑材料和保温材料的仪器。仪器热板温度范围为40℃～-15℃。经过两年多的试
First, an overview Thermal conductivity is one of the important thermal physical properties of the material is to identify the main signs of material insulation performance is good or bad, so accurate determination of the parameters is very necessary. This article describes the often low-temperature dual-plate thermal conductivity meter is used to measure the thermal conductivity of 0.029 ~ 1.16W / m · K range of building materials and insulation materials instruments. Instrument hot plate temperature range of 40 ℃ ~ -15 ℃. After more than two years of trial