Journal
MATERIALS LETTERS
Volume 139, Issue -, Pages 275-278Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.10.061
Keywords
Multilayer structure; Porosity; Polymers; POE; Foam; Sound absorption
Funding
- National Natural Science Foundation of China [51273132, 51227802, 51121001]
- New Century Excellent Talents in University (NCET) [NCET-13-0392]
- National Institute of Clean-and-Low-Carbon Energy
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Poly (ethylene-co-octene) foaming materials with alternating multilayered structure were successfully prepared through multilayer co-extrusion. Poly (ethylene-co-octene) was micro-crosslinked and fully cured before and after the foaming process with co-extrusion. The effects of the layer number on foam morphology and density of poly (ethylene-co-octene) foaming materials were investigated, It was found that with increasing the layer number, the cell size was reduced while the density was not obviously changed. Meanwhile, this technique provided the new idea to obtain the poly (ethylene-co-octene) foaming material with excellent sound absorption. The results indicated that the foam/film alternating multilayered structure could improve the sound absorption efficiency of the foaming sheet, which was increased with increasing the layer number and decreasing of cell size. (C) 2014 Elsevier B.V. All rights reserved.
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