What is WLF shift factor?
What is WLF shift factor?
If the Tg is chosen as the reference temperature, the shift factor for most amorphous polymers is given by the Williams-Landel-Ferry (WLF) equation (Williams et al., 1955). The shift factor can be related to the ratio of the relaxation time at temperature T to the relaxation time at the reference temperature.
What is the WLF equation used to calculate?
The WLF equation is typically used to describe the time/temperature behavior of polymers in the glass transition region. The equation is based on the assumption that, above the glass transition temperature, the fractional free volume increases linearly with respect to temperature.
What is time-temperature superposition rule?
The principle of time-temperature superposition states that the change in temperature from T to T0 is equivalent to multiplying the time scale by a constant factor aT which is only a function of the two temperatures T and T0.
What is the shift factor?
The shift factor is the percentage of shift that a plan can move if not completed on time. For example, if a maintenance plan is due Sept. A 0% shift will not allow the plan to move the due date.
What is the full form of WLF?
WLF. Department of Wildlife and Fisheries. Local State.
What factors affect glass transition temperature?
Increase in pressure of surrounding leads to decrease in free volume and ultimately high Tg. Other factors like branching, alkyl chain length, bond interaction, flexibility of polymer chain, film thickness etc. also have significant impact on glass transition temperature of polymers.
What is the WLF last of us?
Washington Liberation Front
The Washington Liberation Front (WLF), informally called Wolves, are a militant paramilitary organization and an antagonistic faction that exists in The Last of Us Part II. They are located in Seattle, and are currently at war with the Seraphites for control of the area.
What is master curve in rheology?
The master curve shows the time dependence (in terms of frequency) of the material at a constant reference temperature To; the temperature de- pendence of the viscoelastic properties is shown by the variation of the shift factor with tempera- ture.
What are the factors that shift the demand curve?
Factors that can shift the demand curve for goods and services, causing a different quantity to be demanded at any given price, include changes in tastes, population, income, prices of substitute or complement goods, and expectations about future conditions and prices.
What does w/l f mean?
WLF
| Acronym | Definition |
|---|---|
| WLF | We Love Fine (clothing retailer) |
| WLF | Viva La Figa (MotoGP motorcycle races) |
| WLF | Williams-Landel-Ferry (polymer science equation) |
| WLF | Watch List Filtering (software) |
Who are the wolves Last of Us 2?
The Washington Liberation Front (WLF), informally called Wolves, are a militant paramilitary organization and an antagonistic faction that exists in The Last of Us Part II. They are located in Seattle, and are currently at war with the Seraphites for control of the area.
What is WLF shift factor? If the Tg is chosen as the reference temperature, the shift factor for most amorphous polymers is given by the Williams-Landel-Ferry (WLF) equation (Williams et al., 1955). The shift factor can be related to the ratio of the relaxation time at temperature T to the relaxation time at the reference…