Butyl rubber
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Does anyone know what the grades of butyl rubber are? Are different grades obtained after polymerization, or are different grades achieved through further processing of the polymerized butyl rubber? Another question is: how is the degree of polymerization of butyl rubber determined?
The degree of polymerization is determined based on the amount of C5 added, while the grade is determined by the Mooney value and unsaturation level! ! !
The grades of butyl rubber, like those of other rubbers, are determined based on parameters such as Mooney viscosity and volatile content.