Synthesis and Properties of Cross-Linkable High Molecular Weight Fluorinated Copolyimides

IMR OpenIR

	Synthesis and Properties of Cross-Linkable High Molecular Weight Fluorinated Copolyimides
	H. Y. Yao; Y. H. Zhang; Y. Liu; K. Y. You; S. Y. Liu; B. J. Liu; S. W. Guan
	2014
发表期刊	Journal of Polymer Science Part a-Polymer Chemistry
ISSN	0887-624X
卷号	52 期号:3 页码:349-359
摘要	A series of novel high molecular weight fluorinated co-polyimides (Co-PIs) containing styryl side chain based on 1,3-bis(2-trifluoromethyl-4-aminophenoxy)-5-(2,3,4,5-tetrafluorophenoxy)benzene (6FTFPB) were successfully synthesized. The weight-average molecular weights (M(w)s) and polydispersities of the co-polyimides were in the range 8.93-10.81 x 10(4) and 1.33-1.82, respectively. The co-polyimide film showed excellent solubility in organic solvents, high tensile properties (tensile strength exceeded 91 MPa), excellent optical transparency (cutoff wavelength at 332-339 nm and light transparencies above 89% at a wavelength of 550 nm), and high thermal stability (5% thermal weight-loss temperature up to 510 degrees C). The casting and spinning films could be cross-linked by thermal curing. The cured films show better combination property (including excellent resistance to solvents) than that of co-polyimides. For instance, the glass transition temperature of Co-PI-1 (the molar weight ratio of 6FTFPB was 30%) increased from 217 to 271 degrees C, the tensile strength enhanced from 94 to 96 MPa, the 5% thermal weight-loss temperature improved from 514 to 525 degrees C. Moreover, after cured, Co-PI-1 film also has a coefficient of thermal expansion (CTE) value of 60.3 ppm degrees C-1, low root mean square surface roughness (R-q) at 4.130 nm and low dielectric constant of 2.60. (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 349-359
部门归属	[yao, hongyan ; zhang, yunhe ; liu, yu ; you, kaiyuan ; liu, shanyou ; liu, baijun ; guan, shaowei] jilin univ, alan g macdiarmid inst, changchun 130012, peoples r china. [liu, yu] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; guan, sw (reprint author), jilin univ, alan g macdiarmid inst, qianjin st 2699, changchun 130012, peoples r china. ; guansw@jlu.edu.cn
关键词	Crosslinking Fluoropolymers Polyimides Solubility Transparency Refractive Index Wave-guide Devices Polyimide Oligomers Optical-properties Orientation Films
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72422
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Yao,Y. H. Zhang,Y. Liu,et al. Synthesis and Properties of Cross-Linkable High Molecular Weight Fluorinated Copolyimides[J]. Journal of Polymer Science Part a-Polymer Chemistry,2014,52(3):349-359.
APA	H. Y. Yao.,Y. H. Zhang.,Y. Liu.,K. Y. You.,S. Y. Liu.,...&S. W. Guan.(2014).Synthesis and Properties of Cross-Linkable High Molecular Weight Fluorinated Copolyimides.Journal of Polymer Science Part a-Polymer Chemistry,52(3),349-359.
MLA	H. Y. Yao,et al."Synthesis and Properties of Cross-Linkable High Molecular Weight Fluorinated Copolyimides".Journal of Polymer Science Part a-Polymer Chemistry 52.3(2014):349-359.