The Preparation And Properties Research Of Flame Retardant And Antistatic Polyurethare

In this article, the research mainly focused on the preparation and properties of flameretardant and antistatic polyurethare elastomers. The raw material, formula, syntheticmethod,etc was studied. Besides, we also explored the preparation process of fireretardant PU, antistatic PU and double anti-PU. And the effects of the mechanicalproperties, the oxygen index and the antistatic on the mechanical properties were studied respectively. All things considered, obtained the polyurethane elastomer with high flameretardant, excellent anti-static and mechanical properties.According to the results, it is found that the prepolymerization was the most suitableway to prepare the PU. For this preparation,256T/T-100was employed as the mainactive material to synthesize the performed polymer, while MOCA was used as the chainextender and the content of the performed polymer-NCO was setted at6%, resulting inthe best performed sample via this process. Besides, with the increase content of the fireretardants, the mechanical property was decreased, while the oxygen index was improved.However, synergistic fire-retardant effect and the improved performances of this preparedPU were also found due to the combination of the fire retardants.Doping antistatic agent had different effects for the mechanical properties of PU,while the antistatic performance of PU was improved through prepolymer method. As forthe antistatic agents, FeCl3performed better than that of the GL-SN regarding to theantistatic PU prepared by the prepolymerization method. However, samples generatedthrough this way showed a much significant mechanical decrease. The better mechanicalproperties of the products as well as the antistatic performance could be obtained byadjusting the ratio of GL-SN/FeCl3at3:1. The Rs and Rv of the antistatic agent was7.28×105and5.17×1010·cm respectively, could be gained if the content of the antistatic agent was2%.We also compared the influences of different kinds of antistatic agents (ACEF、ZnCl2、 AlCl3、 DD-01) in terms of the mechanical properties of PU if thehalf-prepolymerization method was employed. According to these results, we found thatthe PU sample which doped with DD-01had a better performance regarding the hardness,tensile intensity and tearing intensity, while surface resistive rate and volume resistive ratewere decreased intensively. The Rs and Rv of the antistatic agent was3.5×105and7.72×1010·cm respectively could be gained if the content of the antistatic agent was2%.However, ACEE doped sample had the worst mechanical property and antistaticperformance. According to the SEM images, it was found that DD-01had the bestcompatibility and dispersity among all the tested antistatic agents. On the contrary, ZnCl2was the worst one because there were patchy materials inside. ACEF and AlCl3bothranked at the middle level with a slightly aggregation inside the samples.The PU had the best integrative properties when the content of the antistatic agentFeCl3/GL-SN and the fire retardant TCPP/DBDPE was2%and20%respectively via theprepolymerization process. The hardness, tearing intensity, oxygen index, Rs, and Rv was88shore A,25.7MPa,69.0kN/m,31%,3.42x108,7.83x1010·cm, respectively.Similarly, the PU had the best integrative properties when the content of the antistaticagent DD-01and the fire retardant50A-2was1%and12%respectively via theprepolymerization. Correspondingly, the hardness, tearing intensity, oxygen index, Rs,and Rv was54shore A,12.1MPa,21.4kN/m,29%,5.17x108,1.53x1010·cm,respectively.