Study On The Application Of Antibacterial, Flame And Antistatic Polypropylene

As the enhancement of science and technology and improvement in living standards, new functional requirements of the common plastic are also increasing. Function of polypropylene material which is the generic plastic has become a new research direction. The paper has investigated preparation of anti-bacterial polypropylene , flame retardant and anti-static polypropylene. And the novel organic tin macromolecular anti-bacterial agent has been synthesized.Polypropylene and inorganic silver anti-bacterial agent prepared antibacterial masterbatch,then antibacterial masterbatches and polypropylene produced anti-bacterial polypropylene. Research has shown that rare-earth activating inorganic silver antibacterial agent which has used silane and titanate coupling agent treating has prepared antibacterial polypropylene, the efficiency of antibacterial is the highest, reaching more than 95%.In addition, maleimide and tri-n-butyltin oxide for raw materials, reaction product and styrene copolymerize, generate a kind of organic tin macromolecular antibacterial N-TBTM/St,. then N-TBTM/St and polypropylene extrude, inject mold.The research has shown that the efficiency of antibacterial for N-TBTM is a little lower than for inorganic agent.The research paper has investigated that the effect of anti-static agents on the surface resistivity of polypropylene,the effect of the amount of flame retardant agent on the oxygen index and mechanical performance of polypropylene,and the results of the optimal compound of flame retardant agents established with suitable anti-static agent selected. Experimental results have shown that pentabromophenyl ethers and Sb₂O₃ have good synergy, Sb₂O₃ is synergistic agent, when mol ratio Br:Sb=3:1, oxygen index is 27.8.;Surface resistivity of polypropylene is 1 × 10¹²Î© when the content of anti-static agent is 2.5% .Notable point of the paper is the synthesize of the organic tin macromolecular anti-bacterial agent N-TBTM/St, initial decomposition temperature of the copolymer is above 330℃, heatstability is fine. N-TBTM/St and polypropylene has been extruded so that polypropylene has good anti-bacterial properties.