Feasibility Study on the Development of Tough, Moisture-Resistant Laminating Resins.
GENERAL DYNAMICS SAN DIEGO CA CONVAIR DIV
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The objective of the program was to demonstrate the feasibility of using cyanate resins as laminating systems with projected cost, handleability, and processing requirements equivalent to 400K 260 deg F curing epoxies and to provide laminated structure of equivalent quality but with improved moisture resistance and toughness. Cyanate resins were found to be well suited for these applications. The program preceded from monomer synthesis, through formulation, blending, resin preparation, catalysis studies, prepreg preparation to laminate fabrication and test. The goal of the contract was met with fabrication of a graphite fiber reinforced laminate with 95 percent retention of the original 363K 180 deg F flexural strength and 70 percent retention of the 363K 180 deg F short beam shear strength after 500 hour exposure to 95 percent relative humidity at 324K 120 deg F. MM
- Polymer Chemistry
- Laminates and Composite Materials