High performance phthalonitrile/phenolic epoxy (PNP/PEP) copolymers and their GFRP composites

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Yang, Xulin^1 ; Li, Kui^1 ; Xu, Mingzhen^1 ; Liu, Xiaobo^1

Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu

611731, China^1

关键词: Comprehensive properties;    Flexural modulus;    High mechanical properties;    High temperature;    Mechanical performance;    Phthalonitriles;    Service temperature;    Strength retention;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/4/042012/pdf
DOI  :  10.1088/1755-1315/170/4/042012

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

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.