Properties of GC/PTFE wave-transparent composites infused by bisphenol A dicyanate (BADCy) ester resin

Melted bisphenol A dicyanate ester (BADCy) resin was infused into GC/PTFE wave-transparent composites to improve the mechanical properties of GC/PTFE composites. The influence of the infusing process, the porosity of GC/PTFE composite and the content of infused BADCy resin on the dielectric and mechanical properties of GC/PTFE composites was studied. The fracture surfaces of the broken specimens were also examined by scanning electron microscopy (SEM). It is found that when the porosity of GC/PTFE composite is 25%, the GC/PTFE composites infused by BADCy under 85 °C and vacuum state (0.01MPa) possess optimum mechanical properties and good dielectric properties. And the wet/hot investigation shows that the GC/PTFE composites infused by BADCy resin possess excellent anti-environment properties.