No abstract

In this paper, two kinds of adhesive polystyrene with different proportions and one retardant polystyrene board were studied by test of non combustibility, calorific value and single combustion test. By analysis and comparison, on the premise of the roughly same cost and thermal conductivity, adhesive polystyrene materials showed much less fire risk than that of the polystyrene board.

The absorptions of CO2on the 1-butyl-3-methylimidazolium acetate ([Bmi [Ac]) with different substituents are calculated systematically at GGA/PW91 level. Three hydrogen bonds are formed between [A and cations of 1-n-[Bmi [A ([NBmi+) and 1-tert-[Bmi [A ([TBmi+). The interaction between CO2and the [NBmi [A by a C-O bond is much weaker than that with the [TBmi [A by forming a O...O...C...C four member-ring. The chemisorption of CO2on the ion pairs of [NBmi [A is much weaker than that on the [TBmi [A, resulted from the absorption energies analysis. The frontier molecular orbitals shows the electronic density overlap between absorbed CO2and the [A in CO2-[NBmi [A is much weaker than that in [TBmi [A. Therefore, the chemisorption of CO2on the ion pair of [NBmi [A is much weaker than that on the [TBmi [A. The ionic liquids based [NBmi+can be used repetitively, and the adsorbed CO2would be easier desorbed.

In this paper, the development of indoor fire and burning characteristics of thedecorative materials and toxic fumes produced were analyzed. In addition, toxicitytests were made on the typical decorative materials based on animals exposedexperiment. As a result, such as calcium silicate board and gypsum board areall up to AQ1, other decoration materials, carpet, toxicity levels of otherdecoration materials such as carpet,wood and fabrics are from ZA3 to ZA1，which are quite differentof the same type material, and accordingly, the fire hazard of those materialsare also different significantly.

In this paper, the coal ash /refractory samples were sintered in the furnace at certain temperature for 20h. Then three tests were made by visual observation method, XRD analysis of the coal ash and electromagnetic vibration of the coal ash/ refractory samples respectively in this paper to determine the critical temperature of three coal ashes on the corundum based refractories. Finally, the result shows that the electromagnetic vibration test is the most effective method with a better discriminabiltity on slagging intensity to determine the critical temperature of the coal ash slagging on the refractory. And furthermore, it advances a new and reliable method to determine the critical temperature on the refractories.