Compression permanent deformation of rubber raw rubber products

The size of the compression permanent deformation of various raw rubber in the following order:BR Secondly, the rubber content of the high and low. High rubber content (60% or more), less filler, vulcanised vulcanised rubber crosslinking bonds in the space mesh structure of the gap is large, easy to collapse after stress, compression permanent deformation is greater. The rubber content is low (below 30%), filler more, after vulcanisation of the curing rubber space mesh structure of the gap is small. Stiffness after the force is large, not easy to deform, so its compression permanent deformation is smaller. The compression permanent deformation of medium rubber content is in the middle, between the two.