Accession Number : ADA308141

Title :   Experimental Evaluation of the Adhesive Degradation and Corrosion Potential of Silicone Fluids.

Descriptive Note : Final rept.,

Corporate Author : BATTELLE COLUMBUS DIV OH

PDF Url : ADA308141

Report Date : 27 JAN 1995

Pagination or Media Count : 120

Abstract : The Aerospace Guidance and Metrology Center located at Newark Air Force Base repairs and maintains navigation and guidance equipment for the United States Air Force and other components of the Department of Defense. During repair, the components are cleaned with solvents to remove hydrocarbons and other low molecular weight organic and metal organic compounds. It is important that these cleaning fluids not degrade the physical properties of the metal substrates and/or epoxy components. The Air Force has identified two environmentally compatible cleaning fluids, OS-10 and OS-30 as substitutes for the currently used CFC-113 and 1,1,1-trichloroethane solvents that are ozone layer destroying chemicals. This program assessed the corrosion and adhesive degradation potential of OS fluids on the adhesives and metal substrates used in Air Force inertial navigation and guidance systems. Bulk specimens of the adhesives and lap shear specimens were prepared and exposed under controlled conditions for up to 16 hours. Bare metals were also exposed to the solvents. Adhesive properties and the metal corrosion potential were evaluated and compared with the effects of the control solvents, 1,1,1-trichloroethane and CFC-113, on the same materials. The results show that OS-10 and OS-30 have an insignificant impact on the adhesives and metals. In all cases, the change in properties induced by OS-10 and OS-30 were less than the effects observed using the control solvents.

Descriptors :   *CORROSION, *DEGRADATION, *FLUIDS, *OZONE LAYER, *ADHESIVES, *SILICONES, TEST AND EVALUATION, SHEAR PROPERTIES, CONTROL, METALS, IMPACT, CHEMICALS, PHYSICAL PROPERTIES, DESTRUCTION, ADHESION, SUBSTRATES, AEROSPACE SYSTEMS, REPAIR, FLUORINE, SOLVENTS, CLEANING COMPOUNDS, AIR FORCE FACILITIES, INERTIAL NAVIGATION, EPOXY COMPOUNDS, HALOGENATED HYDROCARBONS, ETHANES, METROLOGY, CHLORINE.

Subject Categories : Organic Chemistry
      Physical Chemistry
      Adhesives, Seals and Binders
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE