ASTM C447评估隔热材料的最高使用温度的操作标准
日期:2012-02-13 17:53
techniques, may give some indication of changes in product characteristics throughout the service range. These results may also be used to bracket the temperature range within which a change has occurred (significant change in slope of curve).
Some properties of thermal insulations containing trapped gases other than air change with time, and at different rates, depending upon the age, thickness, facing and boundary conditions. Elevated temperature exposure accelerates these changes. Changes in
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