The demand for halogen-free and environmentally friendly flame retardants is increasing in the fields of modern polymer materials, electronics and electrical engineering, building decoration, and new energy.

Among them, * * High purity ultrafine magnesium hydroxide * * relies on its excellent

Thermal stability, low smoke and non-toxic characteristics, and good synergistic flame retardant performance are becoming the preferred choice for many high-end flame retardant systems.

1、 Introduction to high-purity ultrafine magnesium hydroxide

**Magnesium hydroxide (Mg (OH) ₂) * * is an inorganic material widely used in flame retardant systems, with a decomposition temperature of up to 330 ° C,

It can absorb a large amount of heat during the thermal decomposition process, while releasing moisture, diluting combustible gases, and forming an insulation layer. Compared to ordinary hydrogen oxidation

Magnesium, after high-purity and ultra-fine particle size treatment, exhibits superior dispersibility, filling properties, and reactivity in material applications.

2、 Analysis of flame retardant advantages of high-purity ultrafine magnesium hydroxide

1. High thermal decomposition temperature, suitable for more high-temperature polymers

The thermal decomposition starting temperature of high-purity magnesium hydroxide is higher than 330 ° C, which is superior to aluminum hydroxide (about 220 ° C), making it widely used in material systems with higher thermal stability requirements such as polypropylene (PP), polyamide (PA), polyolefin elastomer (TPO), polycarbonate (PC), etc.

2. Heat release inhibition effect, significantly delaying combustion spread

The particle size of ultrafine magnesium hydroxide is controlled at<1 μ m, with a larger specific surface area and higher efficiency in releasing water vapor during thermal decomposition. It can absorb more combustion heat, reduce the surface temperature of the polymer, and effectively suppress flame spread.

3. Halogen free, low smoke, non-toxic, in compliance with environmental regulations

Unlike halogenated flame retardants, which release toxic and corrosive gases during combustion, high-purity magnesium hydroxide only releases water vapor during decomposition and does not produce harmful substances such as dioxins and hydrogen chloride, meeting international environmental standards such as RoHS, REACH, UL94, V-0, etc.

4. Can be used synergistically with other flame retardants to enhance overall performance

In many practical formulations, high-purity magnesium hydroxide can work synergistically with phosphorus based flame retardants, nitrogen based flame retardants, expansion type flame retardants, aluminum hydroxide, etc., to improve the flame retardant grade of materials without sacrificing mechanical properties and processing flowability.

5. Improve smoke density and carbon residue, and enhance safety level

Research has shown that the MgO protective layer formed by magnesium hydroxide after material combustion can effectively prevent oxygen diffusion, reduce smoke density, and promote the formation of dense residual carbon in the material, improving the thermal insulation performance and structural stability after combustion.

3、 Widely covered application areas

High purity ultrafine magnesium hydroxide has been widely used in:

Flame retardant sheath materials for wires and cables (such as CPE, EVA, PVC)

Diaphragm material and thermal control layer

Flame retardant modification of thermoplastic (PP/PE/PA)

Building insulation board and decorative materials

Electronic packaging, 5G communication equipment casing

Environmentally friendly coatings and ink flame retardant systems

4、 Market Trends and Development Directions

With the improvement of low smoke and halogen-free flame retardant standards in the European Union, North America, and major Asian countries, high-purity ultrafine magnesium hydroxide, as a green, efficient, and non-toxic environmentally friendly flame retardant, continues to expand its market share.

Future development directions include: magnesium hydroxide (improving compatibility with organic polymers)

Nano scale magnesium hydroxide and organic phosphorus synergistic flame retardant system

New composite flame retardant materials suitable for biobased plastics and biodegradable plastics

5、 Conclusion: Environmentally friendly and flame retardant, starting with choosing the right magnesium hydroxide

Medium magnesium ™ The high-purity and ultrafine magnesium hydroxide series products, after precise particle size control and high-temperature hydration purification process, have excellent stability, dispersibility, and flame retardant synergistic performance. They have been widely used in high-end industries such as cables, batteries, plastics, coatings, etc., and are an important step towards halogen-free flame retardancy and low-carbon environmental protection.