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Synthesis of High Conductivity Polyaniline Composites

Author: HuangYanWei
Tutor: Yao
School: Tianjin University
Course: Materials Science
Keywords: polyaniline in-situ synthesis conductivity nanometer anticorrosion
CLC: TB332
Type: Master's thesis
Year: 2006
Downloads: 1034
Quote: 4
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Abstract


Because of the low cost, flexible doping conducting, light in weights and diversification in structure, Polyaniline has widespread application in such regions as light emitter diode, sensor, solar cell, rechargeable battery, electromagnetic interference shielding, metal anticorrosion and so on.In this dissertation polyaniline conjugated conducting polymer with different texture and properties are prepared, using （NH4）2S2O8 /HCL and （NH4）2S2O8 /R-C6H4-SO3H solution system,the molecular structure of undoped polyaniline is characterized.Polyaniline with different conductivity can be gotten by changing the acid concentration, contents of different materials（carbon nanotube and nano-TiO2） are also studied.To manufacture the integrated conductive network with freely dispersed carbon nanotubes and get transparent conducting coating with excellent transparence and conductivity,it was necessary to self-assemble the free conductive carbon nanotubes into an integrated conductive network effectively in the resin.The paper initiatively introduced a special method of self-assembling the carbon nanotubes by means of conducting po1yanilines which themselves can be self-assembled in the resin system,synthesize one kind of carbon nanotube nanocomposite fibrils capsulated by a layer of conducting polyaniline. Through in-situ synthesized PANi-DBSA composite materials, influence of contents to final structure and property of composites is studied, then high conductive and heat-resistant PANI is prepared. The successful synthesis of the nanocomposite fibrils with fine microscopic structure not only forges a solid basis for both the further self-assembly conductive carbon fibrils and the excellent transparent conducting coatings but also paves the way for the self-assembling all kinds of nanofibrils for versatile applications.Nano-TiO2 material has light size and big relative surface accumulation because of its’unique light, electricity, magnetism performance.This assertation synthesize PANi/TiO2 composites in acid environment, eleltric performance is studied, relative investigation in biodegrade is also studied.Traditional anticorrosion coating certainly did not completely solve the corrosion problem, because majority coatings are easy to chap, scratch, thus cause the metal to expose in the corrosion environment. Even if in the coating, the pinhole does not continuously exist, it also can destroy anticorrosion performance for coating film,

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Composite materials > Non-metallic composite materials
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