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
ecause of the high cost of construction and operation of large test equipment, it is impractical to test at the higher thicknesses at which products are used. For purposes of this practice, it is acceptable to estimate the thermal resistance at any thickness from the thermal resistivity obtained from tests on the product at the minimum test thickness (see 4.7.1) and at the density expected for the proposed thickness.
In principle, any of the standard methods for the determination of thermal resi

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