In the laboratory the butyl rubber and polybutene are mixed in a dualarm sigma blade mixer for approximately 20 min. Dry ingredients are incrementally added in the order listed while mixing. The sealant is dumped, rested 24 h, and extruded. Note: This sealant is a low-cost alternative to asbestos-containing systems and is suggested for use in metal building systems and automotive applications.
地址：山东省烟台市开发区南昌大街48号
