Relation between volumetric changes of unsaturated polyester resin and surface finish quality of fiberglass/unsaturated polyester composite panels

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DOIResolve DOI: http://doi.org/10.1002/pc.21157
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TypeArticle
Journal titlePolymer Composites
ISSN0272-8397
Volume32
Issue9
Pages14731480; # of pages: 8
SubjectComposite parts; Cure shrinkage; Dimensional changes; Experimental investigations; High quality surface; Low profile additives; Polyester composites; Resin cure shrinkage; Surface finishes; Thickness variation; Unsaturated polyester resin; Volumetric changes; Curing; Esters; Finishing; Polymer blends; Resin transfer molding; Shrinkage; Thermal expansion; Unsaturated polymers; Polyester resins
AbstractResin dimensional changes, including cure shrinkage and thermal expansion, highly influence the surface finish quality of composite parts. Low profile additives (LPA) are commonly incorporated in unsaturated polyester (UP) resins to compensate for resin shrinkage and obtain a high quality surface finish. In this study, the dimensional change of an UP resin with different LPA contents was characterized. Both resin cure shrinkage and resin thermal expansion were measured. A simple methodology was then developed to estimate the surface finish quality of panels, manufactured by resin transfer molding (RTM), based on the prediction of part thickness variation during the process. Results show good agreement with the experimental investigations. © 2011 Society of Plastics Engineers.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21271514
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Record identifier275b19e8-1112-4325-92de-ce1ff1228329
Record created2014-03-24
Record modified2016-05-09
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