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
there is no need to accelerate the aging process.
5.1.2 Physical gas diffusion phenomena occur in three dimensions. The one-dimensional form of the diffusion equations used in the development of this practice are valid only for planar geometries, that is, for specimens that have parallel faces and where the thickness is much smaller than the width and much smaller than the length.
Note 3Please see Appendix X3 for a discussion of the theory of accelerated aging via thin slicing.
Note 4Theoretic
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