As professionals know, rubber products are often used in compression, so the compression resistance is one of the main properties that affect the quality of products. The compression resistance of rubber is generally measured by compression permanent deformation.
When the rubber is in the compression state, physical and chemical changes will inevitably occur. When the compression force is not available, these changes prevent the rubber from returning to the original state, and then compression permanent deformation will occur. The size of compression permanent deformation depends on the temperature and time of compression state and the temperature and time of height recovery.