| 초록 |
A cardanol-based flame retardant, FR, was synthesized and characterized via 1H NMR. To investigate the flame retarding mechanism of FR in condensed-phase, the chemical structure of FR with temperature was analyzed using FTIR and TGA. The flame retardancy of neat PVC and flame retarded PVC was evaluated by LOI and UL 94 test. When 7 wt% FR was incorporated, it was achieved V-0 rating due to self-extinguishable property within 10s after ignition and no drips. To demonstrate the additional flame retarding mechanism, SEM images of residual char were recorded. Additionally, the effect of FR on melting behaviors and tensile properties was confirmed via DSC and UTM. These results shown that FR can act as flame retardant and plasticizer for PVC. |
