Abstract
In the design of advanced thermoset GFRP composites, balancing the processabilities of the resin and the comprehensive properties of final GFRP composites is the key. In this paper, phthalonitrile/phenolic epoxy (PNP/PEP) copolymers with well processabiliy have been designed for the GFRP composites. The resulted PNP/PEP GFRP composites not only exhibit high mechanical properties at room temperature; but also show excellent high-temperature mechanical performance. After 300 oC/72h aging, the flexural strength retention ratios maintains over 93% while those of flexural modulus is near to 100%. Advanced PNP/PEP GFRP composites can be employed in some critical circumstances that need high mechanical properties and service temperatures.
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