Density and Viscosity Measurements on the Ternary System of <i>exo</i>-Tetrahydrodicyclopentadiene (1) + <i>n</i>‑Decane (2) + Iso-Butanol (3) and Corresponding Binary Systems

exo-Tetrahydrodicyclopentadiene can serve as both the propellant and coolant in hypersonic vehicles. However, its applications are restricted by the poor properties of ignition and combustion to some extent. Fuel additives such as appropriate alcohols have the ability to overcome these deficits. Research on thermophysical properties of the mixtures composed of exo-tetrahydrodicyclopentadiene and fuel additives can provide important information for the research of fuel additives. In this work, densities and viscosities of the ternary system of exo-tetrahydrodicyclopentadiene (1) + n-decane (2) + iso-butanol (3) and three corresponding binary systems have been measured over the whole composition range in the temperature range from 293.15 to 333.15 K with an interval of 5 K and at pressure p = 0.1 MPa. The values of excess molar volumes (VmE) and viscosity deviations (Δη) of three binary systems and the ternary system were calculated and then fitted to the Redlich–Kister equation and four semi-empirical equations, respectively. The variations of VmE and Δη were explained from the viewpoints of intermolecular forces and structural effects. Furthermore, the Jouyban–Acree model was used to correlate the values of densities (ρ) and viscosities (η) of the studied mixtures with high accuracy

Density, Viscosity, Refractive Index, and Freezing Point for Binary Mixtures of 1,1′-Bicyclohexyl with Alkylcyclohexane

Experimental data of density, viscosity, refractive index, and freezing point have been measured for the binary mixtures of 1,1′-bicyclohexyl with methylcyclohexane, ethylcyclohexane, and butylcyclohexane at different temperatures from <i>T</i> = (293.15 to 318.15) K and the pressure <i>p</i> = 0.1 MPa. The values of density, viscosity, and refractive index at a given temperature, along with the freezing point, increase continuously versus the increasing mole fraction of 1,1′-bicyclohexyl in the binary mixtures. The excess molar volumes (<i>V</i>_m^E), the viscosity deviations (Δη), and the refractive index deviations (Δ<i>n</i>_D) are then calculated and are fitted to the Redlich–Kister equation. All of the <i>V</i>_m^E and Δη values are observed to be negative for these three binary systems over the whole composition range, which are discussed from the molecular interactions and structural effects. The fundamental data are provided for the preparation of advanced hydrocarbon fuels