ASTM C 1134 部分浸入后刚性热绝缘材料水分保持标准试验方法
日期:2012-02-08 15:46
t internal structure and porosity, such as cellular materials and fibrous materials, may not be directly comparable. Also, test results for specimens of different thickness may not be directly comparable because of porosity effects. The surface characteristics of a material also affect drainage. Specimens with rough surfaces may retain more surface water than specimens with smooth surfaces, and surface treatment during specimen preparation may affect water intake and retention. Therefore, result
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09/12 15:08