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Out-life characteristics of im7/977-3 composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hou, Tan-Hung Martin, Richard E. Maryanski, Michael Sutter, James K. Schlea, Michelle Schiferl, Zack R. Miller, Sandi G. Scheiman, Daniel A. Gardner, John M. |
| Copyright Year | 2010 |
| Description | The capability to manufacture large structures leads to weight savings and reduced risk relative to joining smaller components. However, manufacture of increasingly large composite components is pushing the out-time limits of epoxy/ carbon fiber prepreg. IM7/977-3 is an autoclave processable prepreg material, commonly used in aerospace structures. The out-time limit is reported as 30 days by the manufacturer. The purpose of this work was to evaluate the material processability and composite properties of 977-3 resin and IM7/977-3 prepreg that had been aged at room temperature for up to 60 days. The effects of room temperature aging on the thermal and visco-elastic properties of the materials were investigated. Neat resin was evaluated by differential scanning calorimetry to characterize thermal properties and change in activation energy of cure. Neat resin was also evaluated by rheometry to characterize its processability in composite fabrication. IM7/977-3 prepreg was evaluated by dynamic mechanical analysis to characterize the curing behavior. Prepreg tack was also evaluated over 60 days. The overall test results suggested that IM7/977-3 was a robust material that offered quality laminates throughout this aging process when processed by autoclave. |
| File Size | 1214596 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110016110 |
| Archival Resource Key | ark:/13960/t8jd9vd26 |
| Language | English |
| Publisher Date | 2010-10-11 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Fabrication Prepregs Carbon Fibers Temperature Effects Epoxy Resins Curing Aging Materials Elastic Properties Laminates Aircraft Structures Room Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
