Study on the Methods for Measuring Closed Cell Content of Cellular Glass and Its Thermal Insulation Performance

摘要

The methods of measuring the closed cell content of cellular glass by automatic densimeter were studied. The effect of test pressure on the measured closed cell content was investigated to optimize the test pressure. The results showed that cell structure of cellular glass can distort or even damaged with the increase of test pressure. The influence of closed cell content on the insulation property was analyzed by measuring thermal conductivity. Closed cell content affects the insulation property of the cellular glass significantly.