Thermo gravimetric study of coal in the presence of polymers showed that availability of high asphalt-resinous components -asphaltenes and resins benzene within the temperature of 360 -443 0 С in the content was reduced. The optimum catalytics of coal hydrogenation is the compositions on the basis of Pd / C, at which there was the greatest absorption of hydrogen and Co / C, where the hydrogenation rate was maximum.
The purpose of this study is the development and investigation of gas-generating composition based on potassium chlorate for the destruction of a stone. The thermodynamic analysis of the energy characteristics of the studied gasgenerating compositions was carried out. Influence of various amounts of nano-aluminium on features and regularities of burning and ignition of pyrotechnic gas-generating composition on the basis of potassium chlorate was studied. By results of thermodynamic calculation and experimental work the optimum gas-generating composition for destruction of a stone -KClO3-72 %, polyethylene -17%, nano -aluminium Alex-11% was chosen. The carried-out polygon tests on the destruction of a stone had shown high efficiency of use of this gas-generating composition for destruction of a stone.
This work is devoted to the development of pyrotechnic delay mixtures from a titanium matrix reinforced with carbon nanotubes using a combination of preliminary mechanical activation and thermal explosion. The phase and structural transformations of the Ti-CNTs mixtures were analyzed by microscopy and X-ray diffraction. The combustion temperature is practically independent of pressure, it remains constant over the entire range of argon pressure. These delay compositions are not sensitive to different mechanical influences. It is proved that certain amount of CNTs added to delay composition can increase delay precision and further doing so achieved less temperature dependence. The retardant compositions BaCrO4 + Ti / CNT containing carbon nanotubes have the improved characteristics of the retardant composition, such as delay accuracy, combustion stability. The developed retarding compositions are safe in production and at all stages of circulation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.