puristusvasteesta

Puristusvasteesta, or compression set, is a measurement of the permanent deformation of a material after it has been subjected to a compressive force for a specific period at a given temperature. It is a critical property for elastomeric materials, such as rubber, which are designed to return to their original shape after being deformed. When a material exhibits a high puristusvaste, it means it has undergone significant permanent change in its dimensions.

The puristusvaste is typically expressed as a percentage of the original thickness. A low puristusvaste indicates that the material has good elastic recovery and is suitable for applications where maintaining shape and sealing integrity is important. For example, in seals and gaskets, a high puristusvaste can lead to leakage. Factors influencing puristusvaste include the material's composition, the applied stress, the duration of compression, and the temperature during and after the compression test. Higher temperatures and longer compression times generally result in increased puristusvaste. Understanding puristusvaste is essential for selecting appropriate materials for demanding applications in industries like automotive, aerospace, and manufacturing.