Synthesis And Performance Research Of Conductive Polymer Materials

Polymer materials used as a structural material because of its light weight, easy processing,heat resistance, corrosion resistance and fine mechanical properties, have been extensivelyapplied in many fields. With the fast development of information technology, all kinds offunctional polymer materials emerge as the times require, and the conductive polymer materialsare one of the most outstanding one. Conductive polymer material is divided into structuralconductive material and composite material. With the large number of experiments and researchafter90’s, conductive polymer materials has been gradually used into practical application.In this paper, four different types of conductive polymer materials were prepared accordingto four aspects. The influences of the synthesis and preparation on the structures and propertieswere studied, which were characterized through SEM, TEM, IR, DTG and conductivity meter.the conclusions are as follows:1. conductive phenol formaldehyde resin was obtained by heat treatment of aniline-phenolformaldehyde （APF） resin doped with different contents of a modifier （ZnCl₂）. The influences ofthe contents of ZnCl₂, the ratio of raw materials, synthesis temperature, and curing temperatureon product conductivity were also studied respectively. The researchresults showed that:1. Thestructure of PF-resin contained ZnCl₂microsphere;2. In IR curve, the nitrogen element wasfound in the PF-resin matrix;3. When resin-ZnCl₂mass ratio was1:3, and the speed of heattreatment,1℃/min, and the curing temperature,180℃, the conductivity of the cured materialcould increase to7.8×10^-5S/cm.2. phenolic resin pyrolysis carbon materials were prepared by different heat treatments withaniline phenolic resin as precursor, under the protection of nitrogen gas. The research resultsshow that: aniline phenolic resin pyrolysis carbon materials were constructed by three-dimensio-nal network of carbon skeleton structure. With0.5℃/min heating rate up to900℃andmaintaining2h, the specific surface area was70m²/g, and the conductivity of the anilinephenolic resin pyrolysis carbon materials was8.63S/cm. 3. The experiments used chemical oxidation method for preparing polyaniline dark greenpowder which doped protonic acid, and studied the varieties of the products conductivity and theyield under different conditions. The research results show that:1. Different process conditionson product conductivity has great effect but relatively low on the yield;2. When APS and anilinemonomer molar ratio was1:1, the reaction temperature30℃, doped APS solution in25min, andthe reaction time was15h, the conductivity of the polyaniline could increase to5.39S/cm.4. the rare earth doped polyaniline materials were obtained by the immersion of theeigenstate polyaniline and anthanum chloride, cerium chloride mixture in acetone. Themorphology and molecular structure were characterized by SEM and infrared spectrum analysis.The best conditions of preparing the highest conductivity of the materials were also recordedthrough mass experimental statistics. The research results show that:1. The rare earth elementsdoped polyaniline were constructed by three dimensional rod-like network structure throughSEM. They had higher porosity compared to polyaniline;2. Rare earth elements affected onlythe quinoid structure of imine, which accepts a proton into=NH+structure, so the dopingprocess could be regarded as a pseudo protonation process;3. when doping time was24h, boththe conductivity of the two kinds of doped polyaniline reached their maximum of4.29×10-3S/cm...