ICCAS OpenIR
Synthesis and characterization of highly optical transparent and low dielectric constant fluorinated polyimides
Tao, Liming; Yang, Haixia; Liu, Jingang; Fan, Lin; Yang, Shiyong
2009-11-27
Source PublicationPOLYMER
ISSN0032-3861
Volume50Issue:25Pages:6009-6018
AbstractMultitrifluoromethyl-substituted aromatic diamines, 1,1-bis[4-(4'-amino-2'-trifluoromethylphenoxy)phenyl]-1-(3 ''-trifluoromethylphenyl)-2,2,2-trifluoroethane (12FDA) and 1,1-bis[4-(4'-amino-2'-trifluoromethylphenoxy)phenyl]-1-[3 '',5 ''-bis (trifluoromethyl)phenyl]-2,2,2-trifluoroethane (15FDA) were synthesized, which were employed to react with various aromatic dianhydrides to yield a series of highly fluorinated polyimides. The fluorinated polyimides synthesized showed great solubility with inherent viscosities of 0.47-0.69 dL/g. The strong and tough polyimide films exhibited good thermal stability with the glass transition temperature (T(g)) of 209-239 degrees C and outstanding mechanical properties with the tensile strengths of 88-111 MPa and tensile modulus of 2.65-3.17 GPa. Dielectric constants of as low as 2.49 and low moisture absorptions (0.17-0.66%) were measured. The fluorinated polyimide films (710 pm in thickness) also showed highly optical transparency with light transmittance at 450 nm of as high as 97.0% and cutoff wavelength of as low as 298 nm. The average refractive indices and birefringence of the fluorinated polyimide films were measured in the range of 1.5060-1.5622 and 0.0036-0.0095, respectively. PI-7 and PI-8 exhibited low light-absorption in the near-infrared region, especially at the optocommunication wavelength of 1310 run and 1550 run. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordFluorinated Polyimides High Transparency Dielectric Properties
DOI10.1016/j.polymer.2009.10.022
Indexed BySCI
Language英语
WOS IDWOS:000272284100018
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:110[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66994
Collection中国科学院化学研究所
Corresponding AuthorYang, Haixia
AffiliationChinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Tao, Liming,Yang, Haixia,Liu, Jingang,et al. Synthesis and characterization of highly optical transparent and low dielectric constant fluorinated polyimides[J]. POLYMER,2009,50(25):6009-6018.
APA Tao, Liming,Yang, Haixia,Liu, Jingang,Fan, Lin,&Yang, Shiyong.(2009).Synthesis and characterization of highly optical transparent and low dielectric constant fluorinated polyimides.POLYMER,50(25),6009-6018.
MLA Tao, Liming,et al."Synthesis and characterization of highly optical transparent and low dielectric constant fluorinated polyimides".POLYMER 50.25(2009):6009-6018.
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