期刊
TEXTILE RESEARCH JOURNAL
卷 83, 期 4, 页码 426-437出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0040517512454183
关键词
fiber; fabric formation; environmental sustainability; properties; materials
资金
- ECOTEXCOMP: Research and development of textile structures useful as reinforcement of composite materials with marked ecological character [IPT-310000-2010-037]
- Ministerio de Ciencia e Innovacion within the Plan Nacional de Investigacion Cientifica, Desarrollo e Innovacion Tecnologica
- European Union
- Operational Programme on R + D + i
- IMPIVA [IMIDIC/2010/137, IMDEEA/2011/167]
- European Union through Valencian Community
In this work, the wet-laid technique has been used to obtain flax nonwovens thermally bonded with different contents of polyvinyl alcohol (PVA) and bicomponent polyamide 6/copolyamide (PA6/CoPA) fibers in the 10-30 wt.% range. Scanning electron microscopy has been used to evaluate the formation of interlock points through melted polymer and flax fibers. Volume porosity has been estimated through determination of thickness and surface mass. Tensile strength and elongation at break have been determined on longitudinal (preferential) and transversal directions to evaluate anisotropy. The sound absorption properties of stacked sheets of flax: PVA and flax: PA6/CoPA nonwovens have been evaluated. In addition, the thermal insulating properties of individual nonwovens have been obtained. Mechanical characterization shows slight anisotropy. The absorption coefficient is interesting in the medium frequencies range, and relatively low thermal conductivity and thermal resistance values are obtained with these nonwovens (in the 0.020-0.025Wm(-1) K-1 range for flax: PVA nonwovens and in the 0.09-0.10Wm(-1) K-1 range for flax: PA6/CoPA nonwovens). By taking into account these features, these nonwoven substrates could find interesting applications as sound absorbers and/or thermal insulation materials in technical applications.
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