Magnesium Oxide Application in NBR (Nitrile Rubber)

Magnesium Oxide (MgO) is an essential additive in NBR (Nitrile Butadiene Rubber) formulations. It acts as an effective acid scavenger, activator, and stabilizer, helping to improve processing stability and final performance of NBR-based compounds.

Key Functions of MgO in NBR:

1. Acid Scavenger
   MgO neutralizes acidic by-products generated during NBR processing, preventing degradation and improving long-term material stability.

2. Vulcanization Activator
   When used together with ZnO, MgO enhances the vulcanization efficiency and ensures consistent cross-linking, leading to better mechanical strength.

3. Improves Heat and Aging Resistance
   MgO helps to enhance the thermal stability of NBR compounds, reducing hardening and cracking under high-temperature conditions.

4. Enhances Processing Performance
   It improves compound flowability, reduces scorch risk, and maintains stable Mooney viscosity during storage and mixing.

5. Improves Oil and Chemical Resistance
   Proper MgO addition helps maintain the inherent oil-resistant characteristics of NBR, making the final rubber compound more durable in aggressive environments.

Recommended Applications:
NBR seals, gaskets, hoses, conveyor belts, rubber rollers, and various industrial molded products.