Viscosity Pour point

Smith(7) and Fisher(8) recently published articles on the relationship of viscosity, pour point and alkyl chain length of primary alcohol ethoxylates(PAE) and SAE. The empirical equations proposed are in fairly good agreement with the authors obser-... 

VISCOSITIES, POUR POINTS, AND OXIDATIVE DEGRADATION TENDENCIES OF MAJOR LUBRICANT BASESTOCKS... 

Viscosity, Pour Points, Boiling Points, and Chemical Structure... 

Viscosity/pour point Is a measure of HFO resistance to flow. They have high viscosity (depending on the grade) and often require heating for handling and combustion. The minimum heating temperature is defined by the pour point. The viscosity is not an additive property therefore oil blends have to be determined experimentally. 

Depending on the type of crude oil, the adsorbed film at the interface can be either fluid or very viscoelastic and able to form a skin. Depending on the properties of the crude oil (e.g. API gravity (2), sulfur, salt and metals content, viscosity, pour point, etc.), the structure of the film can vary significantly. Therefore, the molecular packing, surface viscosity, surface elasticity and surface charge of the adsorbed film are very important parameters that determine various phenomena such as coalescence of emulsion droplets, as well as oil drop migration in porous media. 

What is the difference between Wax pour point and Viscosity pour point ... 

For oils containing wax, pour point is the temperature at which crystallization of wax has gone to such an extent that the oil will stop flowing if cooled furllier. This temperature is known as Wax pour point . For oils free from wax, xnir point is Ihe temperature at which the viscosity is so iiigh dial the. oil will slop (lowing, if cooled further, due to further iiKicase in viscosity. This temperature is known as Viscosity pour point . 

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