The rubber crosslink structure

Through the branched chain link between rubber macromolecule chain into a three-dimensional space net type macromolecule, forming crosslink structure. Crosslinking key type and crosslink density is the most important parameters in the crosslinking structure, respectively has the structure of crosslinked key and junction in what density distribution between the molecular chain of rubber.Crosslinked rubber after various physical properties have larger change, which is the most significant performance affected by crosslinking density modulus and the hardness, because of the crosslinking of chain and chain sliding between the junction between the inhibition of polymer chain, modulus and hardness increased with the increase of crosslinking density increased;Crosslinking density and tensile strength and tear strength relationship is relatively complex, the scope of a certain degree of crosslinking, with a peak performance.Greatly influenced by crosslinking key type of fatigue resistance and heat oxygen aging performance.Due to the effect of fracture rearrangement of the sulfur exist many keys, contains a lot of sulfur vulcanized rubber network key fatigue resistance performance is good, and the key to higher carbon carbon to improve heat vulcanized rubber crosslinking key oxygen aging performance.

silane crosslinker AC-510
(source:http://www.ac-chem.net/news/the-rubber-crosslink-structure-8ab5.html)