ASTM C1303闭室泡沫塑料绝缘长期热阻预测用标准试验方法
日期:2012-02-13 21:25
lations, production, and comparisons with other materials can be made.
Specifications C578, C591, C1029, C1126 and C1289 on rigid closed-cell foams measure thermal resistance after conditioning at 23 1C [73 2F] for 180 5 days from the time of manufacture or at 60 1C [140 2F] for 90 days. This conditioning can be used for comparative purposes, but is not sufficient to describe long-term thermal resistance. This requirement demonstrates the importance of the aging phenomena within this class
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