The company now has 10 domestic advanced production lines for mixing butyl rubber, with an annual output of 10000 tons. The patented formula is provided by Qingdao University of science and technology. After special process flow, its products have excellent adhesion, weather resistance, aging resistance and excellent waterproof and sealing properties.
It is mainly used for waterproof butyl tape coating, single-sided and double-sided self-adhesive waterproof coiled material coating, lap tape coating, etc., and can be produced according to the color specified by customers.
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.