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Introducing cellulose nanocrystals in sheet molding compounds (SMC)Author(s): Amir Asadi; Mark Miller; Sanzida Sultana; Robert J. Moon; Kyriaki Kalaitzidou
Source: Composites Part A: Applied Science and Manufacturing
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
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DescriptionThe mechanical properties of short glass fiber/epoxy composites containing cellulose nanocrystals (CNC) made using sheet molding compound (SMC) manufacturing method as well as the rheological and thermomechanical properties of the CNC-epoxy composites were investigated as a function of the CNC content. CNC up to 1.4 wt% were dispersed in the epoxy to produce the resin for SMC production. The addition of CNC in the resin increased its viscosity and slightly reduced the heat of reaction during the polymerization without altering the curing time and temperature and the effective pot life of the resin. The incorporation of 0.9 wt% CNC in the SMC composite resulted in increases in elastic modulus and tensile strength by 25% and 30% and in flexural modulus and strength by 44% and 33% respectively. Concentrations of CNC up to 0.9 wt% in the SMC composite did not alter the impact energy.
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CitationAsadi, Amir; Miller, Mark; Sultana, Sanzida; Moon, Robert J.; Kalaitzidou, Kyriaki. 2016. Introducing cellulose nanocrystals in sheet molding compounds (SMC). Composites: Part A. 88: 206-215.
KeywordsA. Cellulose, A. Polymer-matrix composites (PMCs), B. Mechanical properties, E. Moulding compounds
- Lightweight sheet molding compound (SMC) composites containing cellulose nanocrystals
- Improving the interfacial and mechanical properties of short glass fiber/epoxy composites by coating the glass fibers with cellulose nanocrystals
- Preparation of carboxylated lignin-based epoxy resin with excellent mechanical properties
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