Mechanical and morphological properties for sandwich composites of wood/PVC and glass fiber/PVC layers
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Author list: Mongkollapkit N., Kositchaiyong A., Rosarpitak V., Sombatsompop N.
Publisher: Wiley
Publication year: 2010
Journal: Journal of Applied Polymer Science (0021-8995)
Volume number: 116
Issue number: 6
Start page: 3427
End page: 3436
Number of pages: 10
ISSN: 0021-8995
eISSN: 1097-4628
Languages: English-Great Britain (EN-GB)
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Abstract
This work manufactured sandwich composites from glass fiber/poly(vinyl chloride) (GF/PVC) and wood/PVC layers, and their mechanical and morphological properties of the composites in three GF orientation angles were assessed. The effects of K value (or viscosity index) of PVC and Dioctyl phthalate (DOP) loading were of our interests. The GF/PVC was used as core layer whereas wood/ PVC was the cover layers. The experimental results indicated that PVC with low K value was recommended for the GF/ PVC core layer for fabrication of GF/WPVC sandwich composites. The improvement of PVC diffusion at the interface between the GF and the PVC core layer was obtained when using PVC with K value of 58. This was because it could prevent de-lamination between composite layers which would lead to higher mechanical properties of the sandwich composites, except for the tensile modulus. The sandwich composites with 0- GF orientation possessed relatively much higher mechanical properties as compared with those with 45- and 90- GF orientations, especially for the impact strength. Low mechanical properties of the sandwich composites with 45- and 90- GF orientation angles could be overcome by incorporation of DOP plasticizer into the GF/PVC core layer with the recommended DOP loadings of 5-10 parts per hundred by weight of PVC components. ฉ 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 3427-3436, 2010.
Keywords
processing, thermoplastics
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