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High temperature transfer molding resins: preliminary composite properties of peti-375
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Criss Jr., J. M. Hergenrother, P. M. Connell, J. W. Smith Jr., J. G. |
| Copyright Year | 2004 |
| Description | As part of an ongoing effort to develop materials for resin transfer molding (RTM) of high performance/high temperature composites, a new phenylethynyl containing imide designated as PETI-375 has been under evaluation. PETI-375 was prepared using 2,3,3 ,4 - biphenyltetracarboxylic dianhydride (a-BPDA), 1,3-bis(4-aminophenoxy)benzene and 2,2 - bis(trifluoromethyl)benzidine and endcapped with 4-phenylethynylphthalic anhydride. This material exhibited a stable melt viscosity of 0.1-0.4 Pa sec at 280 C. High quality, void-free laminates were fabricated by high temperature RTM using unsized T-650 carbon fabric and evaluated. After curing for 1 hour at 371 C, the laminates exhibited a glass transition temperature of approx. 375 C by thermomechanical analysis. The laminates were essentially void and microcrack free as evidenced by optical microscopic examination. The chemistry, physical, and composite properties of PETI-375 will be discussed. |
| File Size | 938338 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040074325 |
| Archival Resource Key | ark:/13960/t9964h85v |
| Language | English |
| Publisher Date | 2004-01-08 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Viscosity Anhydrides Oligomers Thermodynamics Stability Resin Transfer Molding Rheology Synthesis Chemistry High Temperature Carbon Glass Transition Temperature Imides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
