期刊
RSC ADVANCES
卷 5, 期 94, 页码 77027-77036出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra12637a
关键词
-
资金
- National High Technology Research and Development Program (863 Program) of China [2015AA033802]
- National Science Foundation of China [21074017]
Many efforts have been devoted to tailoring the architecture of phthalonitrile (PN) polymers in recent years. Herein, we disclose a series of novel PN oligomers (PBP-Phs) bearing heteroaromatic phenyl-s-triazine moieties, serving as thermally stable segments in the polymer backbones. With bis(4-[4-aminophenoxy]phenyl)sulfone as a curing additive, PBP-Phs displayed commendable processability. After curing at high temperatures (up to 375 degrees C), the resulting networks (Th-PBPs) exhibited high glass transition temperatures ranging from 294 degrees C to 400 degrees C and outstanding thermal stability with a weight retention of 95% in N-2 lying between 538 degrees C and 582 degrees C; the overall thermal properties were closely connected with the oligomer molar weights. Additionally, the feasibility of producing Th-PBPs reinforced with unidirectional continuous carbon fibers (CF) was evaluated. The results show that CF/Th-PBP laminates possess high flexural strength (1339-1855 MPa) and interlaminar shear strength (71.8-92.2 MPa).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据