Study on Flame Retardant and Rheological Properties of PBS/DOPO/g-C3N4 Composites
PBS/DOPO/g-C3N4 blend composites were prepared by mixing polybutylene succinate(PBS)and DOPO/g-C3N4 through melting method.The properties of the composites were studied by oxygen index instrument,infrared spectrometer and advanced rotational rheometer.The results showed that as the mass fraction of DOPO/g-C3N4 in the system increased,the oxygen index increased from 22 to above 25,and the vertical combustion grade increased from non-grade to V-1 and V-0 grades.It can be seen that the addition of DOPO/g-C3N4 improved the flame retardant performance of PBS,with DOPO/g-C3N4 being added to PBS,the composite melt changed from shear thinning to shear thicken-ing.The composite melt was a typical non-Newtonian fluid.The apparent viscosity deceased as the temperature increased.The non-Newtonian index of the PBS/DOPO/g-C3N4 melt also increased with DOPO/g-C3N4 being introduced into the system.The non-Newtonian index approached to 1.0 when the ratio of DOPO/g-C3N4 was 10％.
NETL
NSTL
万方数据
