NDLI: Chemoviscosity modeling for thermosetting resins, 2

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Chemoviscosity modeling for thermosetting resins, 2

Content Provider	NASA Technical Reports Server (NTRS)
Author	Hou, T. H.
Copyright Year	1985
Description	A new analytical model for simulating chemoviscosity of thermosetting resin was formulated. The model is developed by modifying the Williams-Landel-Ferry (WLF) theory in polymer rheology for thermoplastic materials. By assuming a linear relationship between the glass transition temperature and the degree of cure of the resin system under cure, the WLF theory can be modified to account for the factor of reaction time. Temperature dependent functions of the modified WLF theory constants were determined from the isothermal cure data of Lee, Loos, and Springer for the Hercules 3501-6 resin system. Theoretical predictions of the model for the resin under dynamic heating cure cycles were shown to compare favorably with the experimental data reported by Carpenter. A chemoviscosity model which is capable of not only describing viscosity profiles accurately under various cure cycles, but also correlating viscosity data to the changes of physical properties associated with the structural transformations of the thermosetting resin systems during cure was established.
File Size	703550
Page Count	39
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850026930
Archival Resource Key	ark:/13960/t3pw1ch6b
Language	English
Publisher Date	1985-08-01
Access Restriction	Open
Subject Keyword	Composite Materials Viscosity Temperature Dependence Polymer Chemistry Rheology Curing Reaction Time Mathematical Models Thermosetting Resins Chemical Properties Thermoplasticity Autoclaving Glass Transition Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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