The use of Magnesium Oxides in the Rubber Industry is very important to many halogenated and nonhalogenated elastomers for numerous reasons. Also, Magnesium Oxides are available in many different grades with their corresponding properties. Choosing between these grades to perform a particular function can be difficult. With the basic understanding of these oxides’ properties and performance characteristics, the compounder can confidently make the proper choice and even develop new solutions for challenging problems. The intent of this literature is to familiarize the reader with the different types, properties, grades/forms, functions, applications, and Magnesium Oxide’s effects on the compound’s processing properties.
Magnesium Oxides (MgOs) have been utilized in the Rubber Industry for more than 100 years. Shortly after the discovery of sulfur vulcanization in 1839, MgO and other inorganic oxides proved to accelerate the slow cure rate of sulfur used alone. It was not until the early 1900s when organic accelerators were developed and replaced magnesium and other oxides as primary accelerators in curing systems. MgO consumption decreased until the early 1930s during the birth of a new synthetic elastomer which used this oxide extensively to stabilize and neutralize (acid scavenge)
the compound – polychloroprene (CR). Even now, at the beginning of the next century, the primary use of MgO in the rubber industry is...
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