期刊
POLYMER INTERNATIONAL
卷 70, 期 1, 页码 145-153出版社
WILEY
DOI: 10.1002/pi.6105
关键词
natural fibers; PET fiber; PVA fiber; acoustic emission testing; debonding; fiber fracture
资金
- Comet Program of Austria
- National Scientific Research Fund of Hungary (OTKA) [K 120039, FK 129270]
- Pro Progressio Foundation
Composites were prepared from a polypropylene homopolymer and four types of organic fibers, showing significant improvements in deformability and fracture resistance with PET and PVA fibers compared to traditional stiff fibers. Local deformation processes can be tracked by acoustic emission testing.
Composites were prepared from a polypropylene homopolymer and four types of organic fibers, wood, flax, poly(ethylene terephthalate) (PET) and poly(vinyl alcohol) (PVA). Mechanical properties were studied by tensile and impact testing, and structure by scanning electron microscopy. Local deformation processes were followed by acoustic emission testing. Composite strength changes in a wide range and depends on coupling. The deformability of the composites also varies considerably, more plastic deformation occurring in composites prepared with the PET and PVA fibers. Compared to traditional stiff fibers, fracture resistance can be improved significantly with PET and PVA fibers; impact strength as large as 30 kJ m(-2)can be achieved with PVA. (c) 2020 The Authors.Polymer Internationalpublished by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.
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