MDH Flame Retardant

MDH flame retardant (magnesium hydroxide) has the core advantages of halogen-free, low smoke, non-toxic, efficient smoke suppression and oxygen isolation. It is widely suitable for various fields such as electronics and electrical, new energy, engineering plastics, wires and cables, building materials, etc. The MDH flame retardant produced by Taixing has become a benchmark product in the halogen-free flame retardant market with its outstanding performance of "reducing addition, improving flame retardant efficiency, and reducing smoke density".

Core strengths

1. Multiple flame retardant mechanisms, exclusive adaptation for high temperature scenarios

The MDH flame retardant achieves comprehensive flame retardant protection through a triple synergistic mechanism of "heat absorption and cooling + oxygen isolation and smoke suppression + char layer protection," making it particularly suitable for high-temperature processing scenarios

- Efficient heat absorption and cooling: With an initial decomposition temperature of 340°C (far exceeding ATH's 220°C), a peak decomposition temperature of 430°C, and a heat absorption capacity of 1300J/g per unit mass (1.2-1.5 times that of traditional flame retardants), it can rapidly absorb combustion heat, inhibit the pyrolysis rate of the substrate, and block the combustion chain reaction at the source;

- Oxygen-blocking and smoke-suppressing synergy: The high-purity water vapor released by decomposition dilutes the concentration of flammable gases, while the generated nanoscale magnesium oxide (MgO) particles rapidly deposit to form a dense inorganic carbon layer, blocking oxygen and heat transfer. The smoke density ratio (SDR) is ≤140, significantly better than the national standard limit of 200, with no release of toxic gases such as hydrogen halides or dioxins;

2. Global compliance certification, full scenario security adaptation

The product adheres to the dual design concept of "environmental protection+safety", has passed global multi system certification, and is suitable for sensitive scenario applications:

-Zero halogen environmental protection characteristics: It does not contain restricted substances such as halogens, phosphorus, heavy metals, etc. It has passed the EU REACH SVHC 233 compliance screening and the US Prop 65 certification, meeting the pollution control requirements of electronic information products and fully conforming to the global trend of zero halogen (the global zero halogen flame retardant rate has reached 78.6% by 2025);

-Full scenario safety: Acute oral LD ₅₀ ≥ 2000mg/kg, non irritating, non corrosive, classified as non hazardous chemicals, can be directly used as materials for children's products, food contact materials, hospitals/schools and other enclosed spaces, with safety far exceeding that of halogenated flame retardants;

-Environmentally friendly degradation: The product itself and its decomposition products (MgO, H ₂ O) are environmentally friendly substances that can be naturally degraded without causing pollution to soil or water bodies, in line with the concept of circular economy, and help customers improve their ESG performance.

3. Multi dimensional parameter customization, comprehensive scene coverage

Based on the needs of different industries, we provide a full range of products from industrial grade to electronic grade, with customizable core parameters such as particle size, purity, and modifier type

-Precise particle size control: D50 particle size can be customized within the range of 0.5-8 μ m, and nanoscale products (D50 ≤ 1 μ m) are suitable for electronic semiconductors, precision injection molded parts, while conventional products are suitable for large-scale application scenarios such as building materials and cables;

-Ultra high purity benchmark: Mg (OH) ₂ content ≥ 99.0% (electronic grade can reach 99.5%), strict control of impurity content (Fe ≤ 10ppm, CaO ≤ 0.05%, Cl ⁻ ≤ 20ppm), avoiding the influence of impurities on the electrical properties and aging resistance of the substrate, suitable for sensitive scenarios such as high-voltage cables and semiconductor packaging;

-Functional customization options: We provide functional products such as weather resistant, anti-static, and low dust types. Weather resistant products have stable performance in environments ranging from -50 ℃ to 200 ℃, while anti-static products can adjust their surface resistance to 10 ⁸ -10 ¹⁰ Ω, meeting the special needs of the new energy and electronics industries.

Application field

1. In the field of wires and cables (with a market share of 38%)

-High voltage/ultra-high voltage cable: used for XLPE and PVC cable insulation layer and sheath, suitable for processing technology above 300 ℃ at decomposition temperature, excellent electrical insulation performance, dielectric strength ≥ 20kV/mm, meets the technical requirements of the State Grid 500kV substation bidding, and has passed IEC 60332-1-2 flame retardant certification;

-Rail transit/new energy cables: Suitable for high-speed trains and high-voltage wiring harnesses of new energy vehicles, with stable performance in environments ranging from -40 ℃ to 125 ℃. The flame retardant rating reaches UL94 V0 (1.0mm), and the smoke toxicity meets the GB/T 20284 standard, ensuring the safety of personnel in enclosed spaces;

-Communication cable: It is used as the sheath material of optical fiber and cable. It has low smoke and halogen-free characteristics to avoid smoke blocking communication in case of fire, and has excellent weather resistance and aging resistance. Its service life is ≥ 20 years.

2. In the field of plastics and engineering plastics

-General plastic modification: used for PP, PE, EVA and other plastic films, injection molded parts, pipes, etc., adding 40% -60% can pass UL94 V0 certification, suitable for household appliance shells, plastic trays, building pipes, etc., widely used in household appliances such as washing machines and air conditioners;

-Engineering plastic reinforcement: Suitable for engineering plastics such as PA, PC, PBT, etc., used in automotive electronic components, aerospace interior parts, while improving flame retardant performance, retaining material high strength and high temperature resistance characteristics, meeting industry standards such as ISO 6722 and SAE J1128;

-Foam material flame retardant: used for EVA, PE foam shoe materials, insulation materials, achieving a balance between flame retardancy and lightweight, with an oxygen index (LOI) of ≥ 32%, meeting the safety requirements of children's products and building insulation materials.

3. Building materials field

-Fireproof coating/insulation material: As the core filler of expansion type fireproof coating, adding 30% -40% can make the fire resistance time of the coating ≥ 1.5 hours, suitable for steel structures and concrete buildings; Used for XPS/EPS insulation board, improving flame retardant level to B1 or above, low smoke density, and reducing building fire hazards;

-Fireproof doors and windows/decorative materials: used as filling materials for fireproof doors and windows, flame-retardant wallpaper, floor leather, to suppress the spread of flames and save time for personnel evacuation in a fire, in compliance with building flame-retardant standards such as GB 14907-2018 and UL 1709;

-Cable tray: Suitable for fiberglass and polyester cable trays, with the synergistic formula of "MDH+montmorillonite", the impact strength of the tray exceeds 5.5kJ/m2, solving the mechanical performance bottleneck of high filling systems. It has been successfully applied in major projects such as the 500kV substation in Xiong'an New Area.

If you are looking for MDH flame retardants and globally compliant flame retardants, Taixing will be your best partner, and we will provide the lowest price cooperation. Welcome to negotiate and connect!