电活性高分子材料
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• Q2: What is electro-active materials?
• Q3: What is electro-active polymers
• Q4: What can be done in the electro-active polymer application
Section one: Introduction of electro-active polymer
• Electret: The insulation material is polarized by various methods and the polar state is can been kept for a relative long time, the material is called electret.
electret • Applications of polymeric electret.
Q1: What is electret?
Q2:What is polymeric electret?
Q3:What is different between electret and magnet?
Definition of polymeric electret
The structure of polymeric electret
1.Polarlization electret: The polarized material
by electric field in that dipole structure is
rotated by the electric field force . It is
polymeric electrets • Electro-chromic polymer, • Electro-luminescent polymer. • Modified electrode by polymer
Section two: Electrets and piozoelectric and pyroelectric effects
• Definition of polymeric electret • The structure of polymeric electret • Mechanisms of piezoelectric and
pyroelectric effects • The preparation methods of polymeric
• Tip2: Electric effect: electrochrห้องสมุดไป่ตู้mic, electroluminescence, electro-polarlization, electrostriction
• Tip3: The structure and composition are changed by the electric parameters.
• Pyroelectric effect: the material show a voltage change when its temperature changed
• Electricity-sound conversion(electroacoustic effect): electric wave is conversed to sound wave by a piezoelectric material
The chapter four: Electroactive polymers
• Q1:What is electro-activity?
• Tip1: Electric parameters: Voltage, Potential, Current, Frequency, Phase (active electric parameters). Resistance, capacitance, Inductance (passive electric parameters)
• Polymeric electret: the electret compose of polymeric materials
The electric properties of polymeric electrets
• Piezoelectric effect: the material show a voltage change when it be pressed to by a force (transformation), or show a transformation when it is put on a voltage.
• The showing properties: conductivity, color, light, electricity, magnetism, thermo-properties and size change.
Types of electro-active polymer
• Polymeric dielectrets material, • piezoelectric polymer, pyroelectric polymer,
• Definition about electro-active polymer • Types of electro-active polymer
Definition about electro-active polymer
• These polymeric materials can respond a electric parameter by showing a special chemical or physical property because of their composition, structure, configuration, conformation and supermolecular structure changed.