NDLI: Evaluation of rtm370 polyimide composites by resin film infusion (rfi)

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Evaluation of rtm370 polyimide composites by resin film infusion (rfi)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kollmansberger, Ronald B. Yip, Thomas A. Chuang, Kathy C. Tsotsis, Thomas K.
Copyright Year	2014
Description	RTM370 imide oligomer based on 2,3,3',4'-biphenyl dianhydride (a-BPDA), 3,4'-oxydianiline (3,4'-ODA) and terminated with the 4-phenylethynylphthalic (PEPA) endcap has been shown to exhibit a low melt viscosity (10-30 poise) at 280 C with a pot-life of 1-2 h and a high cured glass-transition temperature (Tg) of 370 C. RTM370 resin has been successfully infused into fiberglass-stitched T650-35 carbon-fabric preforms (ranged from 3- to 6-mm thick) by resin film infusion (RFI). The resulting composite panels were inspected by ultrasonic C-scan and by photomicrographs before and after post-curing as a quality control. Mechanical tests such as unnotched compression (UNC), open-hole compression (OHC), and short-beam shear strength (SBS) at ambient and elevated temperatures were performed before and after isothermal aging at 288 C for 1000 h to assess high-temperature performance. Thermal cycling of RTM370 stitched composites was also conducted from -54 C to 288 C for up to 1600 cycles to evaluate the microcrack resistance of RTM370 polyimide composites fabricated by RFI.
File Size	740269
Page Count	11
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20140010361
Archival Resource Key	ark:/13960/t9b61kc8n
Language	English
Publisher Date	2014-06-02
Access Restriction	Open
Subject Keyword	Polyimide Polymer Matrix Composites Resin Film Infusion Microcracks Oligomers Polyphenyls Ambient Temperature Shear Strength Thermal Cycling Tests High Temperature Glass Transition Temperature Polyimide Resins Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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