Zhongmei Magnesium Industry has been deeply involved in the development of magnesium based inorganic materials for over ten years, focusing on the systematic application of functional powders such as magnesium carbonate, magnesium oxide, and magnesium hydroxide in rubber, plastics, coatings, and adhesives. Our products have passed ROHS, REACH, and ISO quality system certifications and are widely used in rubber product factories, additive formula companies, and modified material enterprises.

We offer:

·Selection of magnesium carbonate powder with multiple particle sizes, whiteness, and porous structures;

·Customizable surface treatment, dispersibility, and specific surface area as needed;

·Provide a complete set of certifications such as COA, MSDS, customs export information, etc;

·Flexible packaging forms (15kg kraft paper bag, ton bag, vacuum bag) suitable for domestic and international markets.

Magnesium carbonate - a functional inorganic additive for upgrading the processing performance and aging resistance of rubber/plastics

In modern polymer material manufacturing, processing efficiency, rheological control, and aging resistance have become important indicators for measuring the comprehensive performance of rubber and plastic materials. With the continuous promotion of automobile lightweighting, electronic cable safety, and environmental protection of building materials, material companies are increasingly relying on green, non-toxic, and controllable reactive inorganic additives to optimize their formulation systems. The rubber/plastic specific magnesium carbonate (MgCO3) series products launched by Zhongmagnesium Magnesium Industry have good processing aid functions, pH buffering performance, thermal stability, and antioxidant delayed aging effects. They can be widely used in rubber mixing, plastic modification, masterbatch pre dispersion, elastomer processing, and aging sensitive formula systems to improve product quality and production efficiency.

✅  1、 Multi functional additives for improving rubber/plastic processing performance

1. Improve mixing efficiency and fluidity

Magnesium carbonate plays a lubricating, debonding, and interface filling role in rubber mixing and plastic extrusion processes, effectively reducing Mooney viscosity, improving flowability, and processing smoothness. It is particularly suitable for high filling formulations, TPE elastomers, PVC extrusion, and rubber rolling/injection processes.

2. Improve the compatibility of filler dispersion and proportioning

MgCO3 has good specific surface area and adsorption capacity, and can be used as a dispersing and synergistic agent for lightweight fillers and fillers, helping talc powder, carbon black, barium sulfate, and white carbon black to be evenly distributed in polymer systems, improving product strength and apparent consistency.

3. Improve material thermal stability and molding consistency

In thermoplastic materials such as PP, PE, and PVC, magnesium carbonate plays a role in decomposition heat absorption and thermal buffering, significantly reducing the risk of pyrolysis and minimizing molding defects such as bubbles, burnt edges, and warping.

✅  2、 Delaying aging and improving the weather/heat resistance of products

Magnesium carbonate can be used as an antioxidant and acid neutralizing agent in rubber and plastic formulations to enhance the aging resistance and lifespan of products in long-term use or high temperature and high humidity environments

·Neutralizing formula acidic by-products (such as peroxides, sulfates, fatty acids) to prevent acidic degradation;

·In vulcanized rubber, it plays a role in buffering pH, stabilizing cross-linking structure, and resisting scorching;

·When applied to white or light colored products, it can also reduce photo aging and UV yellowing;

·In halogenated plastics such as PVC, MgCO3 can adsorb and release HCl to prevent chain breakage and mechanical property degradation.