Wanfeng Light Active Magnesium Oxide is produced from high-purity magnesite through a controlled low-temperature activation process. The product features high activity, fine particle size, large specific surface area, low bulk density, and excellent dispersibility, making it a highly effective functional additive for various rubber compounds.

1. Key Functions & Advantages

• Accelerates vulcanization

Active MgO regulates the acidity of the vulcanization system and neutralizes acidic by-products, enabling a faster and more stable curing process.

• Improves heat resistance & aging performance

MgO captures acidic substances generated during vulcanization, minimizing polymer chain degradation and significantly enhancing heat resistance, weatherability, and aging stability of rubber products.

• Enhances dimensional stability

It helps reduce porosity, shrinkage, and deformation during vulcanization, ensuring better shape retention and surface quality.

• Strengthens mechanical properties

Appropriate addition of MgO improves:

• Tensile strength

• Elastic recovery

• Tear resistance

• Compression set performance

• Essential for Fluoroelastomers (FKM)

Magnesium oxide is a critical component in FKM curing systems. Used together with CaO, it enhances:

• Crosslinking density

• Compression set

• Chemical resistance

• High-temperature durability

2. Suitable Rubber Systems

Wanfeng Light Active MgO is widely used in:

• Fluoroelastomer (FKM)

• Chloroprene rubber (CR)

• Nitrile rubber (NBR)

• Natural rubber (NR)

• SBR, EPDM and other synthetic rubbers

• Acid-acceptor systems for special elastomers

3. Recommended Dosage

• General rubber compounds: 2–10 phr

• FKM formulations: 10–15 phr, depending on the system

4. Product Advantages (Wanfeng Supply Highlights)

• High purity: MgO ≥ 97–99%

• High reactivity

• Excellent dispersion and stable particle distribution

• Consistent batch quality

• Customizable SSA and bulk density based on customer requirements