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Citation: QIU Feng-Xian, YANG Dong-Ya, CAO Guo-Rong, JIANG Yan, HUANG Jin-Hua, LI Ping-Ping. Synthesis and Thermal-Optical Properties of Fluorine-containing Polyimide 1,3-BPA-6FDA-DR1[J]. Chinese Journal of Applied Chemistry, ;2007, 24(10): 1128-1131. shu

Synthesis and Thermal-Optical Properties of Fluorine-containing Polyimide 1,3-BPA-6FDA-DR1

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a School of Chemistry and Chemical Engineering;
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b Faculty of Science, Jiangsu University, Zhenfiang 212013;
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c Jiangsu Provincial Key Laboratory of Modern Agricultural Equipment and Technology, Zhenjiang

Corresponding author: QIU Feng-Xian,
Received Date: 16 October 2006
Available Online: 18 March 2007
Fund Project: 江苏省博士后科研资助计划项目(0602037B) (0602037B)江苏省高校自然科学基金(05KJB150016) (05KJB150016)江苏大学高级人才基金(06JDG015) (06JDG015)

A fluorine-containing polyimide was synthesized from 1,3-bis(4-aminophenoxy)benzene (1,3-BPA), 4,4'-(hexafluoroisopropylidene)diphthalic anhydride(6FDA) and dispersed red 1(DR1). The thermal properties and structure of the polymer were characterized by differential scanning calorimetry(DSC), thermal gravimetric analysis(TGA), UV-Vis and FT-IR. The glass transition temperature(T^g) and the temperature at which 5% mass loss of polyimide occurred were 238 and 287℃, respectively. The material has good thermal stability. The dn/dT and dβ/dT were -2.31×10^-4~-3.04×10^-4 and 2.56×10^-7~4.32×10^-7(different concentration, natural light), -3.08×10^-4 and 4.72×10^-7(436 nm)/℃, respectively. The compound may be used in new digital optical switches with low driving power and optical communication devices.
- polyimide,
- thermal-optic coefficient,
- dielectric constant,
- volume expansion coefficient
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