High temperature viscosity

Note the smaller range of temperaaire for SO2 and H2O. This was due to lack of high temperature viscosity data. ... 

High shear/high temperature viscosity test, to assess the oil s capability for resisting shear, and so retaining its viscosity, at high temperatures. 

A similar process allows reacting triethyl phosphate and phosphorous pentoxide to form a polyphosphate in an organic solvent [871]. An excess of 1.3 moles of triethyl phosphate with respect to phosphorous pentoxide is the most preferred ratio. In the second stage, a mixture of higher aliphatic alcohols from hexanol to decanol is added in an amount of 3 moles per 1 mole phosphorous pentoxide. Aluminum sulfate is used as a crosslinker. Hexanol results in a high-temperature viscosity of the gel, while maintaining at a pumpable viscosity at ambient temperatures [870]. 

Weintraub, M., Corey, P.E. High Temperature Viscosity of Gases Estimated Quickly, Chemical Engineering, Oct. 23, 1967, p. 204. 

Bradley, T. D., and Mitchell, J. R. (1988). The determination of the kinetics of polysaccharide thermal degradation using high temperature viscosity measurements. Carbohydr. Chem. 9 257-267. 

Better low- and high-temperature viscosity characteristics Better cold starts Less evaporative loss Greater life... 

High-temperature viscosity measurements at elevated pressure for 0.62KN03 0.38Ca(N03)2 were fitted to the usual three-parameter Doolittle equation with a Tq that had a linear dependence on pressure as in (7.8). 

HIGH TEMPERATURE VISCOSITIES OF POLAR GAS MIXTURES. AMMONIA AND METHYLAMINE. PH. D. THESIS. 

HIGH TEMPERATURE VISCOSITIES AND INTERMOLECULAR FORCES OF QUASI-SPHERICAL MOLECULES. 

TABLE 52.9. Molecular weights and high temperature viscosity of vacuum Irradiated PTFE [104]. 

Since the scrap rubber was highly crosslinked during vulcanization, the rubber particles are not soluble In asphalt even at high temperatures. Thus, RACs containing 5% rubber can be produced with very modest Increases in the high temperature viscosity. However, the rubber particles are swollen as components of the asphalt mixture are imbibed and at the concentrations of rubber additive proposed by the ISTEA legislation, a substantial increase in the viscosities of the binders Is observed (Table 3). Crumb rubber particles enhance the viscosity more... 

As one might expect, vulcanized rubber can also Improve elasticity (Increase the storage modulus) of the asphalt binder and strengthen the asphalt - aggregate bond at high temperatures. A comparison of G7sin 6, G", a characteristic ratio, and high temperature viscosity for a series of rubber mixtures prepared from AC-10 and... 

For some years, in competition with other polymers, EPMs have been used as additives for lubricating oils becoming what is known as oil viscosity improvers by increasing the high-temperature viscosity and reducing the low-temperature viscosity. Compared to other polymers, EPMs are more stable to shear forces and do not leave carbonaceous deposits. The most suitable have been found to be those with low molecular weight and narrow MWD. 

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