Views: 0 Author: Sibyl Publish Time: 2025-11-29 Origin: Site
Not all magnesium oxide (MgO) boards are the same. The difference lies in the curing process. We understand that the strength of MgO board begins at the molecular level. Every material has a critical moment that determines its strength—the stage where the raw material transforms into a more advanced, higher-performance substance. For magnesium oxide (MgO) boards, this critical moment is curing.
When magnesium oxide reacts with water and a binder (usually magnesium minerals), it doesn’t simply harden; it undergoes a chemical transformation. The slurry forms a dense, interwoven crystalline structure—this is the root of the gap between high-performance boards and inferior imitations.
Two common MgO board variants (and their distinct crystal structures) illustrate this:
Its crystallization relies on two needle-like crystal phases:
① 5·1·8 phase (5Mg(OH)₂·MgCl₂·8H₂O)
This is the main crystalline phase of the MOC plate, consisting of 5 magnesium hydroxide molecules, 1 magnesium chloride molecule, and 8 water molecules. Its needle-like rod-shaped structure forms a dense crystal network through hinge-like connections, giving the material high strength and corrosion resistance.
② 3·1·8 phase (3Mg(OH)₂·MgCl₂·8H₂O)
This is another important crystalline phase, composed of 3 magnesium hydroxide molecules, 1 magnesium chloride molecule, and 8 water molecules. This crystal also exhibits a needle-like rod-shaped morphology, and together with the 5·1·8 phase, it forms the mechanical framework of the MOC.
Its crystallization uses two fibrous/crystal phases:
① 5·1·7 phase (5Mg(OH)₂·MgSO₄·7H₂O)
This is the main crystalline phase of MgO board, composed of 5 magnesium hydroxide molecules, 1 magnesium chloride molecule, and 7 water molecules. These crystals interweave and overlap in the system, forming a three-dimensional network structure. This structure, similar to plant roots or a bird's nest, effectively encapsulates other components, providing excellent mechanical strength and toughness.
② 5·1·3 phase (5Mg(OH)₂·MgSO₄·3H₂O)
This is another important crystalline phase, composed of 5 magnesium hydroxide molecules, 1 magnesium oxide molecule, and 3 water molecules. This crystal also exhibits a needle-like or rod-like morphology, forming the mechanical framework together with the 5·1·7 phase.
| Feature | Magnesium Chloride Board | Magnesium Sulfate Board |
|---|---|---|
| Main Crystal | 5·1·8 needle-like | 5·1·7 fibrous |
| Secondary Crystal | 3·1·8 needle-like | 5·1·3 needle-like |
| Strength | High | More High, more impact-resistant |
| Moisture Resistance | Moderate | Superior |
| Fire Resistance | Excellent | Excellent |
| Typical Uses | Walls, ceilings | Ceilings, Floors, walls, industrial |
Curing is the turning point that makes or breaks an MgO board’s performance. A precise curing process unlocks these key traits:
Fire ResistanceThe dense crystalline structure won’t burn or degrade at high temperatures. Instead, it absorbs and disperses heat, slowing fire spread.
Moisture ResistanceUnlike porous, moisture-prone plaster, the tight molecular structure prevents expansion, warping, or mold growth.
⚒️ Superior StructureHigh-density crystalline components stabilize the board at the molecular level—no instability, just impact resistance and dimensional consistency.
Environmentally FriendlyUnlike cement (made in high-emission kilns), MgO crystallization occurs naturally, with fewer emissions and no toxic resins.
Optimal crystallization isn’t accidental. The quality of curing determines whether a board lasts decades or fails under stress.
At BULU, we engineer every board to achieve perfect crystallization—so you get maximum strength, durability, and reliability.
Not all magnesium oxide is created equal. BULU: Superior quality, durable.
