Schmelzviskosität

Schmelzviskosität refers to the resistance of a molten material to flow. It is a fundamental property in understanding and processing materials like polymers, metals, and ceramics in their liquid state. Higher Schmelzviskosität indicates that the material flows more sluggishly, while lower Schmelzviskosität means it flows more easily. Several factors influence this property, including temperature, molecular weight and structure of the material, and the presence of additives or fillers. As temperature increases, the Schmelzviskosität of most materials decreases, as the increased thermal energy overcomes intermolecular forces. For polymers, longer molecular chains or more complex structures generally lead to higher Schmelzviskosität. The measurement of Schmelzviskosität is crucial in various industrial applications such as injection molding, extrusion, and casting, as it dictates processing parameters like pressure and speed required to shape the material.