Compression permanent deformation of rubber material is not the same concept as dimensional stability
The compression rate of permanent deformation is compressive deformation capacity determination of foaming material and rubber and other soft materials, it relates to the vulcanized rubber and elastic recovery, in particular are generally known height samples, according to the compression rate requirements compressed to a specified height and keep under specified conditions of temperature for a certain time, then lift let the free state under compression, sample response, measuring samples within the time specified in the height, and then through the formula to calculate the compression rate of permanent deformation.
In some ways, relatively close, but not a concept.
Dimensional stability generally refers to the material under the influence of mechanical force, heat or other external conditions, its shape does not change the size of the performance. More refers to the material after the product itself dimensional stability.
