GAS TRANSPORT PROPERTIES OF A POLYIMIDE BASED ON 2, 2-BIS (3, 4-DECARBOXYPHENYL) HEXAFLUOROPROPANE AND meta-PHENYLENEDIAMINE

XU Zhikang; XU Youyi; Springer Jürgen

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GAS TRANSPORT PROPERTIES OF A POLYIMIDE BASED ON 2, 2-BIS (3, 4-DECARBOXYPHENYL) HEXAFLUOROPROPANE AND meta-PHENYLENEDIAMINE

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- GAS TRANSPORT PROPERTIES OF A POLYIMIDE BASED ON 2, 2-BIS (3, 4-DECARBOXYPHENYL) HEXAFLUOROPROPANE AND meta-PHENYLENEDIAMINE
- Vol. 16, Issue 1, Pages: 86-90(1998)
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- Published：20 March 1998
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XU Zhikang, XU Youyi, Springer Jürgen. GAS TRANSPORT PROPERTIES OF A POLYIMIDE BASED ON 2, 2-BIS (3, 4-DECARBOXYPHENYL) HEXAFLUOROPROPANE AND meta-PHENYLENEDIAMINE[J]. 1998, 16(1): 86-90.
DOI：

XU Zhikang, XU Youyi, Springer Jürgen. GAS TRANSPORT PROPERTIES OF A POLYIMIDE BASED ON 2, 2-BIS (3, 4-DECARBOXYPHENYL) HEXAFLUOROPROPANE AND meta-PHENYLENEDIAMINE[J]. 1998, 16(1): 86-90. DOI：

摘要

By means of a vacuum time-lag method

gas transport properties of apolyimide based on 2

2- bis (3

4- decarboxyphenyl ) hexafluoropropane dianhydride (6FDA )and meta- phenylenediamine (mPDA ) have been measured as a function of upstream pres-sure and temperature. The results show that no gas-induced plasticization occurs for thispolyimide in the upstream pressure range from 1 atm to 20atm. The temperature depen-dence of P and D can be described by the Arrhenius equations. The activation energies of permeation and diffusion were obtained for the gas/polymer pair studied and correlated with the size of penetrant gas.

Abstract

By means of a vacuum time-lag method

gas transport properties of apolyimide based on 2

2- bis (3

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