Study on Flame Retardance of Epoxy Resin Containing Piperazine Pyrophosphate Intumescent Flame Retardant
The flame retardant polyethylene(PE)was prepared by adding an APP-free intumescent flame retardant(TC-100)and surface treated TC-100.The effect of dosage on flame retardance in PE/TC-100 was studied.The brittle section morphology was studied by scanning electron microscopy(SEM).The results showed that the addition of flame retardant TC-100 and surface-treated TC-100 can significantly improve the flame retardant performance of PE.When the mass fraction of TC-100 reaches 30%,the material can reach the UL-94 V-0 level,and the oxygen index LOI can reach 30.3%;When the mass fraction of surface-treated TC-100 reaches 30%,the material can reach UL-94 V-0 level,and the oxygen index LOI can reach 34.7%.Surface-treated TC-100 can improve the dispersion in PE matrix and reduce the influence of flame retardant on PE tensile properties.
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