The flammability characterization and thermal composition of polymers flame retarded by decabromodiphenylethane (DBDPE) and antimony trioxide (Sb2O3) were studied by cone calorimeter and thermogravimetry (TG). The res...The flammability characterization and thermal composition of polymers flame retarded by decabromodiphenylethane (DBDPE) and antimony trioxide (Sb2O3) were studied by cone calorimeter and thermogravimetry (TG). The results show that ABS/DBDPE/Sb2O3 has the similar flammability parameters and thermal composition curves to ABS/DBDPO/Sb2O3. It suggests that DBDPE/Sb2O3 has the similar flame retardant behavior to DBDPO/Sb2O3. The heat release rate (HRR) and the effect heat combustion (EHC) curves of polymers flame retarded by DBDPE/Sb2O3 all decrease, but the mass loss rate (MLR) curve slightly increase. It shows that the decrease of HRR is not due to the increase of char formation ratio but the generation of incombustible gases. The major flame retardant mechanism of DBDPE/Sb2O3 is gas phase flame retardant mechanism. Increasing content of Sb2O3 in DBDPE/Sb2O3 can improve the flame retardant property and thermal stability of acrylonitrile butadiene styrene. Sb2O3 has a good synergistic effect with DBDPE.展开更多
A novel analytical method with the guarded-hot-box （GHB） in investigating the thermal resistance of heat-resistant fabrics is described and the analytical method is also presented in this paper. The new apparatus is...A novel analytical method with the guarded-hot-box （GHB） in investigating the thermal resistance of heat-resistant fabrics is described and the analytical method is also presented in this paper. The new apparatus is capable of measure thermal resistance of the fabrics in high temperature up to an average applied temperature of 250~C. The maximum measurement error of the apparatus is 6.5% and relative error is less than 2.8% between the introduced method and standard given value. In the G/-IB method, air layer thickness is the most important factor that influences measurement value of thermal resistance of heat-resistant fabrics. Results show that the method is more accurate and efficient than GBl1048-89 one in measuring thermal resistance of heat-resistant fabrics.展开更多
基金Project(20574020) supported by the National Natural Science Foundation of China
文摘The flammability characterization and thermal composition of polymers flame retarded by decabromodiphenylethane (DBDPE) and antimony trioxide (Sb2O3) were studied by cone calorimeter and thermogravimetry (TG). The results show that ABS/DBDPE/Sb2O3 has the similar flammability parameters and thermal composition curves to ABS/DBDPO/Sb2O3. It suggests that DBDPE/Sb2O3 has the similar flame retardant behavior to DBDPO/Sb2O3. The heat release rate (HRR) and the effect heat combustion (EHC) curves of polymers flame retarded by DBDPE/Sb2O3 all decrease, but the mass loss rate (MLR) curve slightly increase. It shows that the decrease of HRR is not due to the increase of char formation ratio but the generation of incombustible gases. The major flame retardant mechanism of DBDPE/Sb2O3 is gas phase flame retardant mechanism. Increasing content of Sb2O3 in DBDPE/Sb2O3 can improve the flame retardant property and thermal stability of acrylonitrile butadiene styrene. Sb2O3 has a good synergistic effect with DBDPE.
基金Supported by Foundation of Innovation Fund of Doctoral Thesis(No.107 06 0019015)
文摘A novel analytical method with the guarded-hot-box （GHB） in investigating the thermal resistance of heat-resistant fabrics is described and the analytical method is also presented in this paper. The new apparatus is capable of measure thermal resistance of the fabrics in high temperature up to an average applied temperature of 250~C. The maximum measurement error of the apparatus is 6.5% and relative error is less than 2.8% between the introduced method and standard given value. In the G/-IB method, air layer thickness is the most important factor that influences measurement value of thermal resistance of heat-resistant fabrics. Results show that the method is more accurate and efficient than GBl1048-89 one in measuring thermal resistance of heat-resistant fabrics.
