Electrets In Engineering: Fundamentals and Applications

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Springer Science & Business Media, 31.08.2000 - 281 Seiten
Recently a new sphere in materials science· has formed which subject is structure and properties of electret materials used in engineering, medicine, biotechnology and other branches. It is characterized by specific methods of experimental investigations based on recording charge transfer, polarization and depolarization of dielectrics and involves original techniques and physico-mathematical aids where notions that exist at the interface of several natural and technical sciences are concentrated. It embraces a vast area of applications mainly in engineering, instrument making, electronics, medical technique, biotechnology, and etc., has a specialized technological base for electric polarization of dielectrics composed of uncommon technological methods, equipment and instrumentation. Apparently, future fundamental investigations in the domain of electret materials science are to be developed at the interface of computer of dielectrics. Elaboration of a simulation, physics and physical chemistry model for electric polarization of solid media with uneven charge density distribution, complicated by surface phenomena, outer electromagnetic, heat, chemical and other effects, presents a grave methodological problem. The simulation of structures in which polarization follows diffusion mechanism of chemically active molecules or their fragments, and the development of calculation methods for polarized charge relaxation and regularities of dielectric nonlinear properties, are the most urgent objectives of current research. Success in bioelectret effect studies is anticipated to result in profound widening of natural science knowledge.
 

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Inhalt

ELECTRET EFFECT AND ELECTRIC TECHNOLOGIES
1
11 POLARIZATION OF DIELECTRICS
2
1 1 2 Polar and nonpolar dielectrics
5
113 Polarization mechanisms
7
12 ELECTRET PROPERTIES AND PRODUCTION
13
122 Two types of electret charges
17
123 Electret materials
22
124 Electret properties
24
523 Metalpolymer electret wear
139
524 Wear monitoring control over friction
141
53 LUBRICANTS
146
532 Electrorheological suspensions used as lubricants
148
54 CERAMICS
154
541 Solid lubricant films
155
542 Composites based on ceramic matrix
158
543 Strengthening of ceramic articles surface layer
159

125 Thermally stimulated currents and metalpolymer electret formation
27
13 ELECTRIC FIELDS AS REFERRED TO MATERIALS TECHNOLOGY
33
131 Processing of mineral raw materials
34
132 Electrotechnologies for material processing
35
133 Coatings
38
134 Polymer and ceramic materials
41
REFERENCES
43
TRADITIONAL FIELDS OF ELECTRET APPLICATION
47
212 Acoustic transducers
53
213 Electric transducers
58
214 Optical transducers
61
215 Heat transducers
63
216 Electretbased radiation transducers
64
22 Energy Sources
66
23 Filters
68
24 Information Recording
70
REFERENCES
74
THE PRINCIPLES OF ENGINEERING ELECTRET MATERIALS DEVELOPMENT
77
32 OPERATION PROBLEMS
85
33 THE PROBLEMS OF EEM DEVELOPMENT
89
REFERENCES
90
ELECTRETS IN ANTICORROSION TECHNIQUES
91
412 Polymer effect on metal polarization kinetics in electrolyte solutions
95
413 Polymer electret permeability
96
42 POLYMER COATINGS
100
422 Discrete coatings
105
423 Electric technologies for coating formation
106
43 POLYMER FILMS
110
REFERENCES
116
ELECTRETS IN FRICTION JOINTS
117
512 Friction without lubrication
124
52 METALPOLYMER FRICTION JOINTS
126
521 Electrochemical processes at friction
127
522 Polymer tribopolarization
135
REFERENCES
163
ELECTRETS IN SEALING SYSTEMS
167
612 Phase permeation
170
62 ELECTRET SEALS
173
622 Wetting and spreading
175
623 Examples of designs
177
63 HERMETIC COATINGS
180
632 Hermetizing methods
183
633 Industrial applications
185
64 FILTERING MATERIALS
186
642 Modifications of meltblowing technology
190
643 Electret materials and articles
195
REFERENCES
201
BIOLOGICAL AND MEDICAL APPLICATIONS OF ELECTRETS
203
711 Contemporary trends in biotechnology
204
712 Bioelectret effect
208
713 Electric nature of biotechnological processes
210
714 Bioelectronics
214
715 Electret materials in biotechnology
218
72 APPLICATION OF ELECTRETS IN MEDICINE
223
722 Regulated drug transport
231
723 Electrotherapy
239
REFERENCES
244
ECOLOGICAL AND ECONOMIC ASPECTS OF ELECTRET APPLICATION
249
811 Charge relaxation
250
812 Effect of additions
252
813 Effect of irradiation
255
82 SPONTANEOUS ELECTRET EFFECTS
257
83 ELECTRET MATERIALS AND ECOLOGY
261
84 ECONOMIC ASPECTS OF ELECTRET APPLICATION
268
REFERENCES
272
INDEX
275
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