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	Semantic Scholar
Author	Chuang, Kathy C. Yip, Thomas A. Kollmansberger, Ronald B. Tsotsis, Thomas Karl
Copyright Year	2014
Abstract	ABSTRACT 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 (T g ) 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 un-notched 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.
Starting Page	13
Ending Page	13
Page Count	1
File Format	PDF HTM / HTML
Volume Number	53
Alternate Webpage(s)	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140010361.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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