ASTM C687测定松填建筑绝热材料热阻的标准规范
日期:2012-02-13 19:01
lation either by chemical reaction or the application of binders or adhesives, nor does it consider the effects of structures, containments, facings, or air films.
1.3 Since this practice is designed for reproducible product comparison, it measures the thermal resistance of an insulation material which has been preconditioned to a relatively dry state. Consideration of changes of thermal performance of a hygroscopic insulation by sorption of water is beyond the scope of this practice.
1.4 The sa
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