POLYACRYLAMIDE GELS FILLED WITH FERROMAGNETIC ANISOTROPIC POWDER - A MODEL OF A MAGNETOMECHANICAL DEVICE

被引：11

作者：

KLAPCINSKI, T ^{[1
]}

GALESKI, A ^{[1
]}

KRYSZEWSKI, M ^{[1
]}

机构：

[1] POLISH ACAD SCI,CTR MOLEC & MACROMOLEC STUDIES,PL-90363 LODZ,POLAND

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1995年 / 58卷 / 06期

关键词：

D O I：

10.1002/app.1995.070580606

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The concept of a magnetomechanical system able to show permanent magnetization if compressed or to deform in a uniform magnetic field, is presented. The system design is based on polyacrylamide gel filled with demagnetized hard ferrite particles. The ferrite filled gel is deformed by plane strain compression and magnetized while compressed. The orientation of individual magnetized particles was randomized upon compression release. Such samples exhibit no magnetic moment if decompressed and produce magnetic field intensity from 3 to 30 G if compressed. The samples exposed to external uniform magnetic field show macroscopic contraction or expansion of up to 40% of the initial dimensions. The most efficient ferrite was neodymium ferrite in the form of flakes. (C) 1995 John Wiley & Sons, Inc.

引用

页码：1007 / 1013

页数：7

共 7 条

[1]

ATHEY SW, 1966, NASA SP5038

[2]

BAE YH, 1988, 3RD WORLD BIOM C KYO

[3]

BOZORTH RM, 1964, FERROMAGNETISM

[4] MAGNETIZATION BEHAVIORS IN A CHAIN OF DISKS [J].

ISHII, Y ;

ANBO, H ;

NISHIDA, K ;

MIZUNO, T .

JOURNAL OF APPLIED PHYSICS, 1992, 71 (02) :829-835

[5]

KUHN W, 1950, NATURE, V210, P514

[6] CHEMICAL VALVES AND GEL ACTUATORS [J].

OSADA, Y .

ADVANCED MATERIALS, 1991, 3 (02) :107-108

[7] ELECTRICALLY ACTIVATED MECHANOCHEMICAL DEVICES USING POLY-ELECTROLYTE GELS [J].

OSADA, Y ;

HASEBE, M .

CHEMISTRY LETTERS, 1985, (09) :1285-1288

← 1 →