SFPC課題組透波復合材料研究成果發表在Composites Part A上.
Lin Tang, Zhiyong Yang, Yusheng Tang*, Junliang Zhang, Jie Kong and Junwei Gu*. Facile functionalization strategy of PBO fibres for synchronous improving the mechanical and wave-transparent properties of the PBO fibres/cyanate ester laminated composites. Composites Part A: Applied Science and Manufacturing, 2021, 150: 106622. 2020IF=7.664.（1區材料科學Top期刊）
（https://doi.org/10.1016/j.compositesa.2021.106622）
Abstract
A copolymer of P(S-co-BCB-co-GMA) synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization was coated on the surface of poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibres, followed by grafting 2, 2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (AHHFP) to obtain 6F-PBO@P-GMA fibres. The corresponding 6F-PBO@P-GMA fibres/modified cyanate ester wave-transparent laminated composites were then fabricated. The introduction of copolymer membrane and AHHFP reduces interfacial polarization and enhances the interfacial strength of the wave-transparent laminated composites. The corresponding flexural strength and interlaminar shear strength (ILSS) of the 6F-PBO@P-GMA fibres/modified cyanate ester wave-transparent laminated composites are 701.5 and 46.4 MPa, 12.9% and 19.3% higher than those of laminated composites reinforced by pristine PBO fibres, respectively. Meantime, the obtained wave-transparent laminated composites also possess the lowest complex permittivity, and wide high wave-transparent rate area at X-band (|T|2 >93.5%, thickness<2.10 mm).
通過可逆加成-斷裂鏈轉移(RAFT) 聚合合成的P(S-co-BCB-co-GMA) 共聚物涂覆在聚對苯撐苯并二噁唑（PBO）纖維表面，進而接枝2,2-雙（3-氨基-4-羥基苯基）六氟丙烷（AHHFP）得到6F-PBO@P-GMA纖維，再經高溫模壓制備6F-PBO@P-GMA纖維/改性氰酸酯樹脂層壓透波復合材料。共聚物膜和AHHFP的同步引入降低了層壓透波復合材料的界面極化并增強其界面強度。6F-PBO@P-GMA纖維/改性氰酸酯樹脂層壓透波復合材料的彎曲強度和層間剪切強度（ILSS）分別為701.5和46.4 MPa，比純PBO纖維/改性氰酸酯樹脂層壓透波復合材料的彎曲強度（621.5 MPa）和ILSS（38.9 MPa）分別提高了12.9%和19.3%。低于2.1 mm厚的6F-PBO@P-GMA纖維/改性氰酸酯層壓透波復合材料在X波段展示出高的透波率（|T|2>93.5%）。