Study On The Synthesis,Performances Of Coal\Polyaniline Of Different Lithotypes

Coal is a kind of mixture which is mainly constituted by cross-linked network macromolecule. Different lithotypes have different structures of chemistry and physics. This paper systemically studies and compares the preparing conditions and polymerizing mechanism of coal/polyanilines (CP) of different lithotypes in adding-acid system and in not adding-acid system by utilizing different structure characteristics of different lithotypes. In adding-acid system:The resistivities of different lithotypes' CP tend towards being constant and equal when weight percentage of aniline exceeds 50%;Because of the structure difference of different lithotypes,the polymerizing places and processes are different;The resistivities of vituain/PAn and fusain/PAn reach the lowest point respectively when (NtLOiSiOg / An is 0.6,1.0;The resistivities of CP decline fast and tend towards being constant along with the reduction of diameter of coal. In not adding-acid system:The resistivities of different lithotypes'CP decline evenly;It is found on the crossed experiment of CP,that (NFLSaOg / An mole proportion is the most important factor to influence output ratio of CP and the weight percentage of aniline is the most important factor to influence resistivities of CP. According to the result of the crossed experiment of CP. Choose an optimum condition on the basis of that to go on an amplification experiment whose product become the raw and processed materials with which the influence between the adding of DBS A as the second dopant and the conductivity of CP is studied. It's found doping effect is best under 40C temperature and that DBSD/PAn weight percentage is 1.7. At last resistiveity-temperature of CP is studied. It is found CP has positive resistiveity-temperature characteristic.