Magnesium Hydroxide (Mg(OH)₂) is widely recognized as a highly efficient eco-friendly flame retardant for PVC wire and cable compounds. With excellent thermal stability, low smoke generation, and outstanding long-term performance, it has become an essential additive in modern halogen-containing and halogen-reduced cable formulations.

Superior Flame Retardancy and Smoke Suppression

Magnesium Hydroxide decomposes endothermically at elevated temperatures, releasing water vapor that cools the polymer matrix and dilutes combustible gases. This mechanism effectively slows flame propagation and significantly reduces smoke and toxic emissions—two critical requirements in cable safety.

In PVC applications, Mg(OH)₂ enhances:

• Flame retardant efficiency

• Char formation and thermal insulation

• Low-smoke and low-toxicity performance

• Electrical safety in high-temperature conditions

These advantages make it highly suitable for wire and cable products used in buildings, transportation, consumer electronics, and industrial installations.

Excellent Compatibility with PVC

Thanks to its stable particle morphology and controlled surface treatment, magnesium hydroxide disperses uniformly in PVC resin. This ensures:

• Smooth processing during extrusion

• Stable torque and reduced material scorching

• Improved mechanical strength and flexibility

• Better long-term electrical insulation properties

Our specially engineered grades of Mg(OH)₂ offer optimized particle size distribution and surface modification to achieve superior compatibility with various PVC cable formulations.

Environmental and Processing Benefits

As a non-toxic, halogen-free inorganic flame retardant, magnesium hydroxide meets stringent environmental regulations and cable industry standards. It provides:

• Eco-friendly composition

• No release of corrosive halogen gases

• Safer decomposition behavior than traditional additives

• Lower processing smoke compared with aluminum hydroxide

With a decomposition temperature above 330°C, Mg(OH)₂ allows wider processing windows for PVC cable extrusion compared with many common mineral flame retardants.

Applications in PVC Wire & Cable

Magnesium Hydroxide is widely used in:

• PVC power cables

• PVC communication and data cables

• Flame-retardant PVC sheathing compounds

• Flexible and rigid PVC insulation materials

• Low-smoke cable formulations

Its performance advantages help cable manufacturers meet international standards such as IEC, UL, GB/T, and RoHS.

Our Advantage

Our high-purity, high-whiteness magnesium hydroxide is produced with advanced technology to ensure:

• Consistent quality

• Precise particle control

• Low impurities

• Excellent dispersion and stability

• Strong flame-retardant efficiency in PVC systems

Custom grades are available for different extrusion requirements, mechanical properties, and surface-treatment needs.