Study On The Antistatic Properties Of Polypyrrole/PVC Composites

There are immeasurable impact on the processing of polymer materials and the use of products when the material was affected by static electricity.The mechanical properties of the polymer to be significantly reduced though added the traditional antistatic fillers In previous research,and it is too affected by the environment which the antistatic ability will be significantly reduced by the external force such as friction and stretching.The synthesis of polypyrrole nanowires is simple,the yield is abundant,and the linearity is continuous with a certain degree of toughness.The conductive network composed of polypyrrole(PPy)wire was used as an antistatic agent,and related studies were made on the impact of the mechanics,antistatic performance and antistatic stability of polymer materials represented by polyvinyl chloride(PVC).The interaction between the conductivity enhancers of different structures and the conductive network of polypyrrole and its effect on the conductivity of the network are explored.The main contents and conclusions of the research are as follows:1.A in-situ polymerization method was adopted to prepare a CNT-reinforced PPy network antistatic filler by adding CNT as a conductive reinforcement in the PPy network system.Different CNT-PPy fillers were prepared by controlling the content of CNT in PPy network.The results showed that the network in PPy system was not damaged by CNT.As the CNT content increases,the thermal stability of CNT-PPy increases.CNT as a reinforcement and template when PPy is polymerized,so that CNT-PPy forms a "cable" structure with CNT as the core and PPy as the shell.The prepared CNT-PPy filler was blended with PVC to prepare an antistatic composite material.The test shown that the mechanical tensile strength,antistatic ability,and antistatic stability of the composite material under tension are all stronger than that of PVC,which was reinforced by CNT PPy network has better conductivity and mechanical stability.2.Wo-dimensional reduced graphene was used as a reinforcement to broaden the electron transmission path and the stress transmission path on the original network structure of the PPy line,and improved the antistatic ability and mechanical properties of PVC.It is clear that the polymerization process of PPy on rGO reduces the oxygen-containing groups of rGO to a certain extent,promotes its re-graphitization,and makes it possess excellent electrical conductivity.It is explored that with the increase of filler addition and the increase of rGO content,the antistatic ability and mechanical strength of the prepared composite materials are improved to a certain extent.However,excessive addition will cause aggregation,leading to stacking of rGO and reducing the mechanical strength.3.Nano-Cu was reduced to prepare nano-Cu modified conductive network on PPy by in-situ way.The Nano-Cu modified PPy and PVC paste were blended to prepare antistatic composite materials,and the antistatic performance of composite materials was explored as a function of the metal content in the filler.The results shown that there was an N-Cu interaction between the in-situ reduced nano-Cu and PPy.Therefore,the nano-Cu-PPy/PVC composite material had excellent antistatic ability,and as the content of nano-Cu increases,the resistance of the composite material decreases.The conductivity of the original network and the enhancement of stress transmission ability can be achieved by adding different reinforcements.The composite filler improves the comprehensive performance which a PPy network as than the mainly media so that expands its application fields.Through the characterization and analysis of composite materials,As can be seen that PPy not only interacts with the reinforcement,but also interacts with the PVC matrix.The thermal stability,antistatic and mechanical properties of composite material has greatly improved.When the composite material was stretched under a force,the continuous PPy nanowire stacking and winding state was extended to expand the path.Which increase the conductive connection point and relieve the stress concentration,and increase the tensile stability of the composite material.