High Temperature Low Viscosity Polymide Adhesive

Triton Systems, Inc., with Prof. Ronald Baney of the University of Florida (formerly with Dow Corning), propose to meet the Air Force needs for new high performance adhesives for stealth aircraft with near zero shrinkage, by developing a new series of silicone adhesives. Near zero shrinkage will he obtained by the development of a new demonstrated benzoxazine ring opening cure; low moisture uptake and high thermal performance to > 250c is intrinsic for the silicone adhesive system; an added required adhesive strength will be obtained by the addition of new MQ tackifiers. These new silicone adhesives, performing at very low to very high temperatures (-50 to > 250c) and under extreme humidity conditions, will offer a major advancement for the design, performance and repair of military aircraft. This new generation if adhesives with near zero shrinkage, will not impart a stress and potential failure upon the adhesive bond after cure, and will maintain needed strength and thermal performance. We propose to develop silicone adhesives in contrast to polyimide adhesives because of their well known tendency to absorb low amounts of water, their low change of properties with temperature, their known remarkable thermal stability, and because of our unique path to near zero shrinkage. Successful completion of the proposed Phase I program and a subsequent Phase II program will result in a high temperature adhesive with zero shrinkage.