Butyl rubber has low cohesion and poor self-adhesive property. The rubber is easy to be broken, and the process of regrouping into a whole is very slow. Therefore, higher mixing temperature and longer mixing time are required during mixing. During the mixing process, 2ylyy114wfm paid attention to the change of mixing temperature in time and strictly controlled the mixing temperature to avoid the influence of too high or too low temperature on the quality of mixed rubber and finished products. When butyl rubber is mixed by internal mixer, the mixing temperature is generally controlled at 150 ° C to promote the uniform dispersion of the compounding agent.
Internal mixer mixing: when mixing butyl rubber with internal mixer, properly increase the rubber loading capacity, which is greater than 10% - 20% of natural rubber; The pressure of upper top bolt is higher than that of lower top bolt during mixing. When the amount of compounding agent used in the formulation of butyl rubber products is large, two-stage mixing method or reverse mixing method can be used for the mixing process.
