1, the effect of temperature
TPE materials of different temperature sensitivity varies, such as measuring financial means when you can measure several temperature, if the financial means vary greatly, it indicates TPE material viscosity on temperature sensitivity is high, suitable for extrusion material.

2, the impact of low molecular weight additives
Low molecular weight additives can reduce the force between macromolecular chains, and thus the viscosity decreases, making it easy filling molding. This is very good explanation, we can understand the small molecule additives into the added mineral oil.

3, the impact of molecular weight
With a TPE material may have a different molecular weight and molecular weight distribution, molecular weight greater the intermolecular forces stronger, reflected the greater the viscosity, the same time when the molecular weight of the narrow molecular weight distribution is often less viscous. Such as TPE on substrates with YH503T higher than the viscosity YH502.

4, shear rate
Effectively increasing shear rate of plastic can melt plastic viscosity decreased, but the impact of different plastics that are not the same shear rate, measured financial means when you can measure some pressure, if financial means very different words , indicating high sensitivity to shear viscosity of the material, suitable for injection molding material.

5, the effects of stress
Although the high injection pressure during the injection process can increase the injection speed to obtain a large shearing, it seems to reduce the viscosity favorable, but the physical meaning of pressure, the boost it will make the melt viscosity increases, the reason is very simple, large molecular chain to chain themselves between rock promoter superfluous, dictates that the intermolecular forces, increasing the pressure reduced mean molecular distances between the molecular chains due to the movement even more difficult, the overall flow viscosity also increases