Applications
Natural Brucite (MAG-325) for Industrial Rubber Systems
Cost-Sensitive Mineral Flame Retardant Selection Guide for High-Loading Rubber Applications
Qingdao Pengfeng New Material Co., Ltd. supplies MAG-325 natural brucite (magnesium hydroxide mineral) for use in industrial rubber compounds, mining conveyor belt systems, and selected flame-retardant filler applications.
MAG-325 is a naturally occurring magnesium hydroxide mineral processed for industrial use, designed for high filler loading rubber and coating systems where cost structure and bulk mineral requirements are key formulation considerations.
Application Scope
MAG-325 brucite is commonly utilized across several high-volume matrix fields:
- Mining conveyor belt rubber compounds
- Industrial rubber products and mechanical goods
- Flame-retardant rubber compounding formulations
- Cementitious and mineral-filled functional coating systems
- Industrial filler systems requiring high-purity magnesium-based minerals
- General bulk mineral reinforcement and matrix building systems
Product Specifications (MAG-325 Brucite)
The table below details the integrated physicochemical specifications and typical industrial mineral purity thresholds for the MAG-325 grade:
| Mineral Parameter Category | Specification Range / Value Fact |
| Product Identity Name | Magnesium Hydroxide (Natural Brucite Ore Mineral) |
| Model Grade Designation | MAG-325 |
| Mg(OH)₂ Active Component Content | ≥ 85.0% |
| Median Particle Size (D50 Distribution) | ~ 12.0 μm |
| Thermal Dehydration Temperature Onset | ~ 330°C |
| Loss on Ignition (LOI Range Boundary) | ≥ 28.0% |
| Moisture Content Threshold | ≤ 0.50% |
| Silicon Dioxide (SiO₂ Mineral Impurity) | ≤ 13.0% |
| Aluminum Oxide (Al₂O₃ Mineral Impurity) | ≤ 5.0% |
| Physical Appearance State | Fine white uniform mineral powder |
| Chemical CAS Registration Number | 1309-42-8 |
Technical Selection Considerations
When optimizing formulations with industrial-grade natural brucite minerals, technical screening targets:
- Active Mg(OH)₂ content boundaries (natural ore grade standardization)
- Particle size distribution control (centered at D50 ~12 μm to prevent process friction)
- Moisture verification limits (≤ 0.50% ensuring bubble-free elastomer curing)
- Mineral silica/alumina impurity profile management (SiO₂ and Al₂O₃ weight ratios)
- Bulk density packing suitability during dense high-filler loading stages
- Polymer matrix mastication and processing shear compatibility in rubber compounds
- System raw material cost structure optimization targets
Sample Supply and Technical Documentation
Qingdao Pengfeng New Material Co., Ltd. provides verification materials via international supply chains:
- MAG-325 physical laboratory evaluation samples supplied on request for compound verification
- Standard product specification certificate documentation packages
