|
个人信息Personal Information
研究员
博士生导师
硕士生导师
任职 : 高分子材料系副系主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：高分子材料. 高分子化学与物理. 功能材料化学与化工
办公地点：大连理工大学西部校区化工实验楼A407室
联系方式：Tel.: 0411-84986191
电子邮箱：liuch1115@dlut.edu.cn
Thermally stable phthalonitrile resins based on multiple oligo (aryl ether)s with phenyl-s-triazine moieties in backbones
点击次数：
论文类型：期刊论文
发表时间：2015-08-24
发表刊物：RSC ADVANCES
收录刊物：SCIE、EI、Scopus
卷号：5
期号：94
页面范围：77027-77036
ISSN号：2046-2069
摘要：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).