Abstract: Amorphous polymers containing preferential orientational molecular chromophore dipoles doped or chemically attachment to polymer macromolecules are a class of new molecular nonlinear optical materials, which also called molecular dipole polymer electret. In present paper，the effect of the thickness，aging condition and charging temperature on the charge stability of PTFE films are researched by means of corona charging, isothermal surface-potential and piezoelectricity modulus measurement etc. The electrostatic self-assembly of the host-quest type DR1/PMMA films on PTFE films which charging condition is 100℃,the thickness is 90μm. The effect of the thickness,doped concentration and preparation methods on the charge stability of the host-quest type DR1/PMMA films are discussed. The result shows that the charge stability of the film is the best which was prepared by the host-quest type DR1/PMMA solution in which doped concentration is 5% and volume is 1.5ml; piezoelectricity modulus is the highest which was prepared by the host-quest type DR1/PMMA solution in which doped concentration is 5% and volume is 0.5ml, reach to 25pC/N.
