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
apply, agreement between the requesting body and the testing organization.
Generally, thin sections of these materials are not uniform. Thus, the test thickness must be greater than or equal to the products representative thickness if the results are to be consistent and typical of use.
Note 1The representative thickness is specific for each product and is determined by running a series of tests in which the density is held constant but the thickness is increased. The representative thickness is
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