Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) polymer alloy/montmorillonite (MMT)nanocomposites have been prepared using direct melt intedrcalation technique.The thermal oxidative degradation of the polymer...Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) polymer alloy/montmorillonite (MMT)nanocomposites have been prepared using direct melt intedrcalation technique.The thermal oxidative degradation of the polymer alloy and the nanocomposites was studied by thermogravimetric analysis (TC).The kinetic evaluations were performed by the modelfree kinetic analysis and the multvariate nonlinear regression. Apparent kinetic parameters for the overall degradation were calculated. The results show that展开更多
The theory of three-dimensional discrete transfer radiation model is expounded in detail in this paper. The computer program has also been written using this method here. Two kinds of radiation heat transfer problemS...The theory of three-dimensional discrete transfer radiation model is expounded in detail in this paper. The computer program has also been written using this method here. Two kinds of radiation heat transfer problemS have been simulate with numerical method using the computer program, and the predictions carried out are quite in agreement with the exed results. It shows that the threedimensional discrete transfer radiation model is one of the suitable way to obtain heat flux and temperature in various applications.展开更多
Based on the basic idea of zone modeling method, a two-layer zone model is developed and programmed to calculate the fire growth and smoke spread in a multi-room building subjected to a fire.The related predictiVe equ...Based on the basic idea of zone modeling method, a two-layer zone model is developed and programmed to calculate the fire growth and smoke spread in a multi-room building subjected to a fire.The related predictiVe equations, numerical simulation method and sub-models implemented in this model are concisely described. A set of experimental data from Cooper’s work at NIST for a two-room compatment fire are chosen for comparison with the model and program, and the numerical results fundamentally agree well with the experimental data. Then, an example of numerical calculation of a two-story building fire is presented, and the relevant output results are given and analyzed.展开更多
文摘Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) polymer alloy/montmorillonite (MMT)nanocomposites have been prepared using direct melt intedrcalation technique.The thermal oxidative degradation of the polymer alloy and the nanocomposites was studied by thermogravimetric analysis (TC).The kinetic evaluations were performed by the modelfree kinetic analysis and the multvariate nonlinear regression. Apparent kinetic parameters for the overall degradation were calculated. The results show that
文摘The theory of three-dimensional discrete transfer radiation model is expounded in detail in this paper. The computer program has also been written using this method here. Two kinds of radiation heat transfer problemS have been simulate with numerical method using the computer program, and the predictions carried out are quite in agreement with the exed results. It shows that the threedimensional discrete transfer radiation model is one of the suitable way to obtain heat flux and temperature in various applications.
文摘Based on the basic idea of zone modeling method, a two-layer zone model is developed and programmed to calculate the fire growth and smoke spread in a multi-room building subjected to a fire.The related predictiVe equations, numerical simulation method and sub-models implemented in this model are concisely described. A set of experimental data from Cooper’s work at NIST for a two-room compatment fire are chosen for comparison with the model and program, and the numerical results fundamentally agree well with the experimental data. Then, an example of numerical calculation of a two-story building fire is presented, and the relevant output results are given and analyzed.
