Energetic nanofluid fuel has caught the attention of the field of aerospace liquid propellant for its high energy density(HED), but it suffers from the inevitable solid-liquid phase separation problem. To resolve this...Energetic nanofluid fuel has caught the attention of the field of aerospace liquid propellant for its high energy density(HED), but it suffers from the inevitable solid-liquid phase separation problem. To resolve this problem, herein we synthesized the high-Al-/B-containing(up to 30%(mass)) HED gelled fuels, with low-molecular-mass organic gellant Z, which show high net heat of combustion(NHOC), density, storage stability, and thixotropic properties. The characterizations indicate that the application of energetic particles to the gelled fuels obviously destroys their fibrous network structures but can provide the new particle-gellant gelation microstructures, resulting in the comparable stability between 1.0%(mass) Z/JP-10 + 30%(mass) Al or B and pure JP-10 gelled fuel. Moreover, the gelled fuels with high-content Al or B exhibit high shear-thinning property, recovery capability, and mechanical strength, which are favorable for their storage and utilization. Importantly, the prepared 1.0%(mass) Z/JP-10 + 30%(mass) B(or 1.0%(mass) Z/JP-10 + 30%(mass) Al) shows the density and NHOC 1.27 times(1.30) and 1.43 times(1.21)higher than pure JP-10, respectively. This work provides a facile and valid approach to the manufacturing of HED gelled fuels with high content of energetic particles for gel propellants.展开更多
WT4”BZ]Synthesis of stabilizing agents-methanol-epoxy propane(PO)-ethylene oxide(EO), glycerine-PO-EO, diglycerol-PO-EO, sorbierite-PO-EO, hexahydroxymethylmelamine-PO-EO additives was described and effects of number...WT4”BZ]Synthesis of stabilizing agents-methanol-epoxy propane(PO)-ethylene oxide(EO), glycerine-PO-EO, diglycerol-PO-EO, sorbierite-PO-EO, hexahydroxymethylmelamine-PO-EO additives was described and effects of number and molecular weight of branched chains, molar ratio of PO and EO, crosslink density of stabilizing agents on fluidity in coal-oil mixture (COM) were discussed in this article When PO∶EO is equal to 2, molecular weight above 5000, the stabilizing agent having suitable crosslink density with more branched chains gives better fluidity in COM For hexahydroxymethyl melamine-PO-EO additive, when condensation of hexahydroxymethyl melamine in performed at pH=4 5 for 10min, copolymerization with PO and EO, and cross linking of copolymer by TDI to get polymer with MW 2 times higher than the copolymer, the maximum coal loading of 66% in COM can be展开更多
A new mechanism of saving energy and reducing pollution is brought forward by analyzing water characters and all factors which bring saving energy and reducing pollution in the combustion process of emulsification oil...A new mechanism of saving energy and reducing pollution is brought forward by analyzing water characters and all factors which bring saving energy and reducing pollution in the combustion process of emulsification oil. The theory shows that the reason of saving energy and reducing pollution is that emulsification oil can reduce surplus air ratio effectively. By this new theory, the reason of saving energy and reducing pollution in the combustion process of emulsification gasoline, emulsification diesel oil and emulsification heavy oil of W/O or O/W can be well explained, especially for that in a boiler with favorable combustion state. According to the theory, a good performace of the high soften-point pitch-water slurry combustion is gained.展开更多
基金support from the National Natural Science Foundation of China (22222808, 21978200)the Haihe Laboratory of Sustainable Chemical Transformations for financial support
文摘Energetic nanofluid fuel has caught the attention of the field of aerospace liquid propellant for its high energy density(HED), but it suffers from the inevitable solid-liquid phase separation problem. To resolve this problem, herein we synthesized the high-Al-/B-containing(up to 30%(mass)) HED gelled fuels, with low-molecular-mass organic gellant Z, which show high net heat of combustion(NHOC), density, storage stability, and thixotropic properties. The characterizations indicate that the application of energetic particles to the gelled fuels obviously destroys their fibrous network structures but can provide the new particle-gellant gelation microstructures, resulting in the comparable stability between 1.0%(mass) Z/JP-10 + 30%(mass) Al or B and pure JP-10 gelled fuel. Moreover, the gelled fuels with high-content Al or B exhibit high shear-thinning property, recovery capability, and mechanical strength, which are favorable for their storage and utilization. Importantly, the prepared 1.0%(mass) Z/JP-10 + 30%(mass) B(or 1.0%(mass) Z/JP-10 + 30%(mass) Al) shows the density and NHOC 1.27 times(1.30) and 1.43 times(1.21)higher than pure JP-10, respectively. This work provides a facile and valid approach to the manufacturing of HED gelled fuels with high content of energetic particles for gel propellants.
文摘WT4”BZ]Synthesis of stabilizing agents-methanol-epoxy propane(PO)-ethylene oxide(EO), glycerine-PO-EO, diglycerol-PO-EO, sorbierite-PO-EO, hexahydroxymethylmelamine-PO-EO additives was described and effects of number and molecular weight of branched chains, molar ratio of PO and EO, crosslink density of stabilizing agents on fluidity in coal-oil mixture (COM) were discussed in this article When PO∶EO is equal to 2, molecular weight above 5000, the stabilizing agent having suitable crosslink density with more branched chains gives better fluidity in COM For hexahydroxymethyl melamine-PO-EO additive, when condensation of hexahydroxymethyl melamine in performed at pH=4 5 for 10min, copolymerization with PO and EO, and cross linking of copolymer by TDI to get polymer with MW 2 times higher than the copolymer, the maximum coal loading of 66% in COM can be
文摘A new mechanism of saving energy and reducing pollution is brought forward by analyzing water characters and all factors which bring saving energy and reducing pollution in the combustion process of emulsification oil. The theory shows that the reason of saving energy and reducing pollution is that emulsification oil can reduce surplus air ratio effectively. By this new theory, the reason of saving energy and reducing pollution in the combustion process of emulsification gasoline, emulsification diesel oil and emulsification heavy oil of W/O or O/W can be well explained, especially for that in a boiler with favorable combustion state. According to the theory, a good performace of the high soften-point pitch-water slurry combustion is gained.
