PRIMARY AND SECONDARY PYROELECTRICITY IN HIGHLY ORIENTED POLYVINYLIDENE FLUORIDE

被引：14

作者：

NIX, EL ^{[1
]}

NANAYAKKARA, J ^{[1
]}

DAVIES, GR ^{[1
]}

WARD, IM ^{[1
]}

机构：

[1] UNIV LEEDS,DEPT PHYS,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1988年 / 26卷 / 01期

关键词：

CRYSTALS - Orientation - PIEZOELECTRIC MATERIALS - PLASTICS SHEETS - Electric Properties - PYROELECTRICITY - Measurements;

D O I：

10.1002/polb.1988.090260107

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Measurements of the pyroelectric response in both free and constrained conditions are presented for low-draw ratio, high-draw ratio and voided from I polyvinylidene fluoride sheets. The results are used together with related data for the piezoelectric response and for the thermal expansion behavior to estimate the primary and secondary components of the total macroscopic pyroelectricity. For the high-draw ratio and voided sheets the primary response was approximately 90% of the total pyroelectricity compared with 40% for the low-draw ratio nonvoided sheet. It is proposed that the role of reversible temperature-dependent crystallinity is more pronounced in the high-draw samples. Previous NMR studies provide support for this conclusion.

引用

页码：127 / 140

页数：14