Experimental investigation into stamping of woven CF/PP laminates: Influences of molding temperature on thermal, mesoscopic and macroscopic properties

Sun, G; Kong, X; Wang, Z; Luo, Q; Li, Q

Experimental investigation into stamping of woven CF/PP laminates: Influences of molding temperature on thermal, mesoscopic and macroscopic properties

Sun, G Kong, X Wang, Z Luo, Q

Li, Q

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Composite Structures, 2021, 263, pp. 1-18
Issue Date:: 2021-05-01

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Field	Value	Language
dc.contributor.author	Sun, G
dc.contributor.author	Kong, X
dc.contributor.author	Wang, Z
dc.contributor.author	Luo, Q https://orcid.org/0000-0001-5727-9290
dc.contributor.author	Li, Q
dc.date.accessioned	2022-06-02T05:49:43Z
dc.date.available	2022-06-02T05:49:43Z
dc.date.issued	2021-05-01
dc.identifier.citation	Composite Structures, 2021, 263, pp. 1-18
dc.identifier.issn	0263-8223
dc.identifier.issn	1879-1085
dc.identifier.uri	http://hdl.handle.net/10453/157880
dc.description.abstract	This study aimed to investigate the influences of stamping temperature (or molding temperature) on thermal properties of matrix, mesoscopic structures of fabric and effective macroscopic mechanical properties of composite materials through experimental characterization. The plain woven carbon fiber/polypropylene composite laminates were prepared by hot stamping at 190 °C, 220 °C and 250 °C, respectively. Thermal study was performed using differential scanning calorimeter and thermogravimetric analysis. The mesoscopic properties were characterized through microscope and scanning electron microscope (SEM). Tensile test and short beam shear test were conducted to evaluate macroscopic properties of the material. Effects of fabric structure on the crack initiation and propagation as well as local strain concentration of thermoplastic composite were investigated in detail using digital image correlation (DIC) technique. Relationships of process parameters, thermal characteristics, mesoscopic fabric structures and macroscopic mechanical properties of the carbon fiber reinforced polypropylene (CF/PP) materials were explored under different stamping temperatures. The experimental results revealed that with increase in processing temperature, the crystallinity of polypropylene (PP) matrix increased, and the interfacial adhesion between fiber and resin became strong, leading to increase in tensile modulus. Due to the change of resin viscosity, the aspect ratio, crimp angle and gap size of the fiber bundles also vary. The interfacial debonding was a main failure mode in CF/PP composites. This study is anticipated to provide fundamental understanding in how to tailor effective properties of composites through manufacturing process.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Composite Structures
dc.relation.isbasedon	10.1016/j.compstruct.2020.113507
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering
dc.subject.classification	Materials
dc.title	Experimental investigation into stamping of woven CF/PP laminates: Influences of molding temperature on thermal, mesoscopic and macroscopic properties
dc.type	Journal Article
utslib.citation.volume	263
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-06-02T05:49:36Z
pubs.publication-status	Published
pubs.volume	263

Abstract:

This study aimed to investigate the influences of stamping temperature (or molding temperature) on thermal properties of matrix, mesoscopic structures of fabric and effective macroscopic mechanical properties of composite materials through experimental characterization. The plain woven carbon fiber/polypropylene composite laminates were prepared by hot stamping at 190 °C, 220 °C and 250 °C, respectively. Thermal study was performed using differential scanning calorimeter and thermogravimetric analysis. The mesoscopic properties were characterized through microscope and scanning electron microscope (SEM). Tensile test and short beam shear test were conducted to evaluate macroscopic properties of the material. Effects of fabric structure on the crack initiation and propagation as well as local strain concentration of thermoplastic composite were investigated in detail using digital image correlation (DIC) technique. Relationships of process parameters, thermal characteristics, mesoscopic fabric structures and macroscopic mechanical properties of the carbon fiber reinforced polypropylene (CF/PP) materials were explored under different stamping temperatures. The experimental results revealed that with increase in processing temperature, the crystallinity of polypropylene (PP) matrix increased, and the interfacial adhesion between fiber and resin became strong, leading to increase in tensile modulus. Due to the change of resin viscosity, the aspect ratio, crimp angle and gap size of the fiber bundles also vary. The interfacial debonding was a main failure mode in CF/PP composites. This study is anticipated to provide fundamental understanding in how to tailor effective properties of composites through manufacturing process.

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http://hdl.handle.net/10453/157880