Brief introduction: Transient plane heat source method as an absolute coefficient of thermal conductivity measuring method, in theory, can achieve high accuracy of measurement. In the test sample size and other factors meet the test methods specified boundary conditions, the coefficient of thermal conductivity measurement range could theoretically unlimited. So for homogeneous material, the use of transient plane heat source method can yet be regarded as a kind of effective method to easy operation and high measuring accuracy, within the scope of temperature is not high (196 ℃ ~ 200 ℃), the method can be use as a standard method, and compared with other test methods together to form effective thermal conductivity of complement and mutual alignment, calibration can even be used with other test methods. Company produces the transient plane heat source method of coefficient of thermal conductivity test system is a kind of multi-function testing equipment, has the test block and fission materials as well as the function of the membrane material, also equipped with a vacuum cavity device, circulating oil bath temperature control system, gas pressure control system and multi-channel scanning switch device, so as to realize the under different temperature and atmosphere pressure measurement for multiple samples simultaneously. Technical indicators: Temperature range: - 269 ℃ ~ 250 ℃) (according to the temperature environment. Pneumatic control range: 3 pa ~ a standard atmospheric pressure, gas may be air, nitrogen, etc., volatility is less than + / - 1%. Channel number: 4 wire connection, a total of eight channels. Manual switch and computer program-controlled switches, can simultaneously measure up to 8 groups of sample. Form and the sample size: the largest sample size of 50 mm x 50 mm x 40 mm. Sample forms: solid, powder, paste, sheet, film, etc. Coefficient of thermal conductivity measurement range: 0.005 ~ 500 w/mK. Coefficient of thermal conductivity measurement precision, better than + / - 5%. Coefficient of thermal conductivity measurement repeatability: better than that of plus or minus 7%. Sheet sample test: the sheet thickness range 0.1 ~ 10 mm, coefficient of thermal conductivity measurement range of 10 ~ 500 W/mK. Film sample test: film thickness range of 0.01 ~ 2 mm, coefficient of thermal conductivity test range 0.005 ~ 10 W/mK
Brief introduction: Transient plane heat source method as an absolute coefficient of thermal conductivity measuring method, in theory, can achieve high accuracy of measurement. In the test sample size and other factors meet the test methods specified boundary conditions, the coefficient of thermal conductivity measurement range could theoretically unlimited.
