Journal article
Effects of Hygrothermal Conditions and UV Radiation on UHMWPE Fibers/Nanofiber—Epoxy Composites
Journal of composite materials, Vol.41(24), pp.2897-2914
12/2007
Handle:
https://hdl.handle.net/2376/115938
Abstract
Nanofiber-epoxy with reactive graphitic nanofibers (r-GNFs) showed an improvement in adhesion properties in ultra-high molecular weight polyethylene (UHMWPE) fibers/epoxy resin composite (bundle/tow form) in our previous experiments. In this study, moisture absorption characteristics of pure-epoxy, nanofiber-epoxy materials and their UHMWPE bundle composites were investigated under hygrothermal aging and UV conditions. For the matrix specimens the weight gain deviated from Fick's law, and thus, a two-stage model, which includes both diffusion and structural relaxation, was applied to analyze the moisture absorption behaviors. For the bundle composites the results indicated that the weight gain showed compatibility with Fick's law. The UHMWPE fiber composite with nanofiber-epoxy containing 0.3 wt% r-GNF loading resulted in the lowest rate of water absorption. Bundle composites were also exposed to accelerated UV aging conditions. The UV test results showed that the plateau stress and ultimate tensile strength of the bundle composites have been reduced. However, the ductility of the UHMWPE composites was increased due to the plasticization in hygrothermal aging tests.
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Details
- Title
- Effects of Hygrothermal Conditions and UV Radiation on UHMWPE Fibers/Nanofiber—Epoxy Composites
- Creators
- S Jana - Department of Mechanical Engineering and Applied Mechanics North Dakota State University, Fargo, ND 58105, USAW.H Zhong - Department of Mechanical Engineering and Applied Mechanics North Dakota State University, Fargo, ND 58105, USA
- Publication Details
- Journal of composite materials, Vol.41(24), pp.2897-2914
- Academic Unit
- Mechanical and Materials Engineering, School of
- Identifiers
- 99900548141501842
- Language
- English
- Resource Type
- Journal article