Flow Testing of Cytec FM300 and FM300-2K Structural Adhesives
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION MELBOURNE (AUSTRALIA)
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The flow of Cytec FM300 and FM300-2K structural film adhesives was examined using flow tests employing an autoclave or by using dead-weights to apply pressure. The effect of ageing the adhesive at room-temperature was examined for periods of up to 60 days. FM300 adhesive was found to show minimal changes in flow and it was difficult to determine the adhesive age from the flow test results. The effects of ageing on FM300 are most likely to appear in the results of mechanical tests such as the short overlap shear test. FM300-2K showed a more consistent change in flow with age. The flow of FM300-2K changed markedly over the ageing period about 30-40 change in area flow and decreased in an almost linear fashion with age. This makes it viable to determine the effects of ageing on FM300-2K based on the results of flow tests. Both types of pressure application autoclave and dead-weights are suitable for flow testing and offer key advantages and disadvantages. If an autoclave is available it is preferable to perform flow tests at 100 kPa.
- Adhesives, Seals and Binders
- Laminates and Composite Materials
- Test Facilities, Equipment and Methods