کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1403423 | 984823 | 2007 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Anisotropic and heterogeneous thermal expansion of polyethylene foam blocks: Effect of thermal treatments Anisotropic and heterogeneous thermal expansion of polyethylene foam blocks: Effect of thermal treatments](/preview/png/1403423.png)
Crosslinked closed cell polyethylene foams produced in blocks by compression moulding present an anisotropic and heterogeneous thermal expansion behaviour when the temperature is increased. This paper analyses the main reason for this particular behaviour and presents a way to reduce it by using thermal treatments.In order to perform this analysis, an experimental study on the cellular structure, lamellar distribution and thermal expansion is presented as a function of two kinds of thermal treatments. The experimental results have showed that the main factor controlling the foams thermal expansion is an anisotropic and heterogeneous cellular structure of the original foams. It has been also proved that an adequate thermal treatment allows homogenising the foams thermal expansion.
Journal: European Polymer Journal - Volume 43, Issue 10, October 2007, Pages 4474–4485