Mechanical Characterization of Glass Fiber Shape Memory Polymer (GFSMP) Composites
摘要
Smart composites made up of flexible, shape memory polymer resin system are light weight and possess high strain, shape memory, energy absorption, and other multifunctional capabilities. So, the flexible composites are good alternate to the existing epoxy resin-based composites which are brittle in nature. In the present study, an acrylate-based UV light curable shape memory polymer (SMP) resin along with glass fabric is used to make glass fiber shape memory polymer (GFSMP) composite laminate, and its mechanical behaviors are evaluated through experimental approach. A two-component SMP resin system is synthesized using tert-butyl acrylate (tBA) as monomer and Poly (ethylene glycol) dimethacrylate (PEGDMA) as cross linker. Further, DMPA (di methoxy phenyl aceto phenone) photo initiator is employed to activate the photo polymerization. The synthesized SMP resin system is then reinforced with bidirectional glass fabric to fabricate fiber composite laminate. Initially, the mechanical properties of the composites are evaluated under quasi-static loading to estimate the elastic modulus and its strength properties. Subsequently, tests are carried out under dynamic loading in Dynamic Mechanical Analyzer (DMA) to evaluate the storage modulus, loss modulus, and damping properties which clearly demonstrate the capability of glass fiber–SMP composite laminate to use in vibration suppression applications.