STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION*

ZHANG Xingyuan; FURUKAWA; Takeo

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STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION*

Papers | Updated：2021-06-21

- STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION*
- STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION*
- 高分子科学（英文版） 1994年12卷第1期页码：12-21
- Affiliations：
  
  1.   Department of Materials Science and Engineering
  2.   University of Science and Technology of China
  3.   Hefei 230026
  4.   Department of Chemistry
  5.   Science University of Tokyo
  6.   Japan
- Author bio：
- Funds：
- DOI：
  中图分类号： O631.3
- 纸质出版：1994-03-20
- Accepted：
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[1]张兴元,FURUKAWA,Takeo.STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION[J].Chinese Journal of Polymer Science,1994,{4}(01):12-21.

ZHANG Xingyuan, FURUKAWA, Takeo. STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION*[J]. 1994, 12(1): 12-21.
[1]张兴元,FURUKAWA,Takeo.STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION[J].Chinese Journal of Polymer Science,1994,{4}(01):12-21. DOI：

ZHANG Xingyuan, FURUKAWA, Takeo. STUDIES ON THE CHAIN STRUCTURAL EFFECT OF PVDF AND VDF (52)/TrFE(48) COPOLYMER BY MEANS OF THE METHOD OF DIELECTRIC RELAXATION*[J]. 1994, 12(1): 12-21. DOI：

摘要

正

Through improvements on a fully commercial and automatic system measuring frequency andtemperature spectra of the complex elastic

dielectric

and piezoelectric constants of polymerfilms

the precision for measuring complex dielectric constants achieved 2‰ from original 1%.The complex dielectric constants of PVDF

VDF （95 ）/VF （5）

VDF （52）/TrFE （48） and VDF（47. 5）/TrFE（47. 5）/HeFP （5） over a range of-120-140℃

10-2-10

Hz were measured bythe described system. The diminution of chain regularity due to 5mol% vinyl fluoride in the chainof PVDF led to disappearing of α-relaxation and increase in T

（3℃） of VDF （95）/VF （5）.Because of the spatial impediment of 5mol% HeFP in copolymer chain

the Curie point of VDF（52）/TrFE（48） decreased by 30℃ and T

by 3℃. The behavior of dielectric relaxation indicatedthat 5mol% vinyl fluoride and HeFP made the relaxation strength of noncrystalline regionreduced

the activation energy of local relaxation increased and the relaxation time prolonged respectively.

Abstract

Through improvements on a fully commercial and automatic system measuring frequency andtemperature spectra of the complex elastic

dielectric

and piezoelectric constants of polymerfilms

the precision for measuring complex dielectric constants achieved 2‰ from original 1%.The complex dielectric constants of PVDF

VDF （95 ）/VF （5）

VDF （52）/TrFE （48） and VDF（47. 5）/TrFE（47. 5）/HeFP （5） over a range of-120-140℃

10-2-10

Hz were measured bythe described system. The diminution of chain regularity due to 5mol% vinyl fluoride in the chainof PVDF led to disappearing of α-relaxation and increase in T

（3℃） of VDF （95）/VF （5）.Because of the spatial impediment of 5mol% HeFP in copolymer chain

the Curie point of VDF（52）/TrFE（48） decreased by 30℃ and T

by 3℃. The behavior of dielectric relaxation indicatedthat 5mol% vinyl fluoride and HeFP made the relaxation strength of noncrystalline regionreduced

the activation energy of local relaxation increased and the relaxation time prolonged respectively.

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