ABSORPTION OF WATER AT 100-DEGREES-C BY POLYURETHANE FOAM

被引：13
|
作者：
SABBAHI, A [1 ]
VERGNAUD, JM [1 ]
机构：
[1] UNIV ST ETIENNE, FAC SCI, MAT & CHEM ENGN LAB, 23 DR P MICHELON, F-42100 ST ETIENNE, FRANCE
来源：
EUROPEAN POLYMER JOURNAL | 1991年 / 27卷 / 08期
关键词：
D O I：
10.1016/0014-3057(91)90021-F
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The absorption of water at 100-degrees-C by polyurethane (PU) foam is described by considering transient diffusion with constant diffusivity. Sheets of PU foam are used, with a one-, di- or tri-dimensional transport of water through the sheet. Numerical models, with finite differences, are capable of following the process of absorption with good accuracy in all three cases. Two values of the diffusivity are obtained, the one for the transport through the thickness of the sheet, and the other through the other dimensions, parallel with the plane surface of the sheet.
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页码：845 / 850
页数：6
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