NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing rubber manufacturers with not only high-quality products but also the technical knowledge to utilize them effectively. Light magnesium oxide is a prime example, and understanding its technical specifications is key to optimizing rubber formulations. This article delves into the critical technical parameters that define the performance of magnesium oxide in rubber applications.

The primary component of magnesium oxide, MgO content, is a fundamental indicator of its purity and efficacy. Higher MgO content generally signifies a purer product, leading to more predictable and potent performance as a vulcanizing agent, anti-scorch agent, or acid absorber. Grades suitable for rubber applications typically boast MgO content above 90%, with specialized grades exceeding 97%. For instance, LW-04, commonly used in rubber, often features an MgO content of 93% or higher.

The iodine absorption value is another crucial parameter, reflecting the surface area and reactivity of the magnesium oxide. A higher iodine absorption value generally indicates a more active and reactive material, which can translate to improved anti-scorching capabilities and faster cure rates. For rubber applications, iodine absorption values typically range from 120 to 150 mgI2/gMgO, depending on the specific grade and desired effect. Choosing a magnesium oxide with a suitable iodine absorption value is essential for controlling scorch safety and vulcanization kinetics.

Stack density, often measured in g/ml, provides insight into the particle packing and bulkiness of the magnesium oxide powder. Lower stack densities, typically below 0.25 g/ml for light magnesium oxide, often correlate with lighter, more dispersed particles, which can facilitate easier mixing and better dispersion within the rubber matrix. This improved dispersion is critical for achieving uniform property enhancement across the entire rubber compound.

Other important specifications include the percentage of residue greater than 100 mesh, which indicates the fineness of the powder, and the loss on ignition, which reflects residual moisture and volatile matter. Low levels of impurities, such as calcium oxide (CaO) and iron (Fe), are also critical, especially for light-colored rubber products where these impurities could affect color consistency. For example, specific grades designed for tire manufacturing might have CaO content below 1.5% and Fe content below 0.13%.

At NINGBO INNO PHARMCHEM CO.,LTD., we offer detailed technical data sheets for each of our magnesium oxide products, allowing manufacturers to make informed decisions. Whether you are looking for magnesium oxide for tyre manufacturers or for general rubber compounding, understanding these technical parameters is the first step towards achieving optimal results. Our commitment as a leading chemical auxiliary and catalyst provider means we equip our clients with the necessary information to successfully integrate our products.

By carefully selecting magnesium oxide grades based on these technical parameters, rubber manufacturers can effectively control scorch, optimize vulcanization, and enhance the overall performance and durability of their products. Partner with NINGBO INNO PHARMCHEM CO.,LTD. for expert advice and high-quality magnesium oxide solutions.