Flame Retardant Grade Magnesium Hydroxide

Flame retardant grade magnesium hydroxide is a high-performance halogen-free flame retardant material prepared by Taixing for modern polymer material fire safety challenges. The product has the core advantage of "precise decomposition at 340 ℃, 60% reduction in smoke density, and 20% reduction in addition", and is widely used in core fields such as polyolefins, engineering plastics, wires and cables, building materials, and new energy batteries. It is an environmentally friendly halogen-free, low smoke, low toxicity, and safer core material.

Core strengths

1. Triple synergistic flame retardant mechanism

Breaking through the limitations of traditional single flame retardant mechanisms, we have innovatively achieved triple synergy of "heat absorption and cooling+oxygen isolation and smoke suppression+carbon layer strengthening", resulting in a 35% increase in flame retardant efficiency compared to conventional products

-Efficient heat absorption and cooling: The initial decomposition temperature is 340 ℃ (suitable for high-temperature processing materials such as PP and PE, far exceeding ATH's 220 ℃), the peak decomposition temperature is 430 ℃, and the heat absorption per unit mass is 1300J/g, which is 1.2-1.5 times that of traditional flame retardants. It can quickly block the combustion chain reaction and provide sufficient safety window for high-temperature scenarios such as power batteries and high-voltage cables;

-Oxygen isolation and smoke suppression synergy: The high-purity water vapor released from decomposition dilutes the concentration of combustible gases, with a smoke density ratio (SDR) of ≤ 140, far exceeding the national standard limit of 200. There is no release of toxic gases such as hydrogen halides and dioxins, and the smoke toxicity reaches the safety level of GB/T 20284. It is suitable for closed public places such as hospitals and schools;

-Carbon layer enhanced protection: By using directional crystallization technology to shape regular hexagonal plate-like crystals (with a diameter to thickness ratio of 8:1), the decomposed magnesium oxide (MgO) particles quickly deposit, forming an inorganic carbon layer with a density increase of 40%. It can maintain structural integrity for ≥ 90 minutes in a 950 ℃ flame environment, effectively blocking heat and oxygen transfer, and meeting the strict fire resistance requirements of high-end building materials, aerospace, and other industries.

2. Customized modification technology, fully upgraded compatibility performance

Based on the characteristics of different substrates, the patented technology of "silane titanate composite coupling agent+plasma surface treatment" is adopted to solve the industry pain points of poor dispersibility and large mechanical performance loss of traditional flame retardants:

-Excellent dispersibility: activation index ≥ 98%, contact angle above 150 °, surface changes from hydrophilic to hydrophobic, excellent compatibility with polyolefins and engineering plastics such as PP, PE, EVA, PA, ABS, etc., dispersion uniformity improved by 40% in polymer substrates, no agglomeration or delamination phenomenon, and particle size distribution uniformity can be verified by laser particle size analyzer detection (D90/D10 ≤ 2.2);

-Mechanical performance retention: After modification, the product forms a stable chemical bond with the substrate, and the influence on the material's tensile strength, impact toughness, and elongation at break is controlled within 12%, with a retention rate of ≥ 88%. Even with 60wt% filling in the PP system, the tensile strength can still reach 18.5MPa, far exceeding the industry average of 14.2MPa, solving the core problem of "flame retardancy but product brittleness";

-Mechanical performance retention: After modification, the product forms a stable chemical bond with the substrate, and the influence on the material's tensile strength, impact toughness, and elongation at break is controlled within 12%, with a retention rate of ≥ 88%. Even with 60wt% filling in the PP system, the tensile strength can still reach 18.5MPa, far exceeding the industry average of 14.2MPa, solving the core problem of "flame retardancy but product brittleness";

-Optimization of processing efficiency: With an oil absorption value as low as 22mL/100g, it can increase the melt flow rate (MFR) of composite materials by more than 20%, reduce equipment energy consumption and mold wear during extrusion and injection molding processes, and increase production efficiency by 18%, especially suitable for automated large-scale production lines.

3. Dual guarantee of environmental protection and safety

Following the global trend of halogen-free policies, our products have passed full system compliance certification and are adapted to different market access requirements

-Zero halogen environmental characteristics: It does not contain restricted substances such as halogens, phosphorus, heavy metals, etc., fully complies with the EU REACH SVHC 233 compliance screening, US Prop 65, Japan CSCL, and China's "Key Control New Pollutant List (2025 Edition)" requirements, successfully replacing banned halogen flame retardants such as octabromoether, and avoiding export compliance risks;

-Full scenario safety: Acute oral LD ₅₀ ≥ 2000mg/kg, non irritating, non corrosive, classified as non hazardous chemicals, can be directly used in sensitive scenarios such as children's products, food contact materials, hospitals/schools, etc. The decomposition products are magnesium oxide (MgO) and water, both environmentally friendly substances that can be naturally degraded without secondary pollution;

-ESG adaptation advantages: The production process adopts a closed-loop water treatment system, with a wastewater recovery rate of 95% and energy consumption 20% lower than the industry average. It can provide a full lifecycle carbon footprint report to help customers improve their ESG performance and respond to the EU CBAM carbon border adjustment mechanism.

4. Multi dimensional parameter customization, comprehensive scene coverage

Based on the needs of different industries, we provide a full range of products from general grade to high-end customized grade, which can flexibly adjust core parameters such as particle size, modifier type, and synergistic system

-Precise particle size control: D50 particle size can be customized within the range of 0.5-8 μ m. Nano level products (D50 ≤ 1μm) are suitable for electronic semiconductors and precision injection molded parts, while conventional level products (D50=2-5μm) are suitable for large-scale application scenarios such as building materials and cables, balancing flame retardant efficiency and processing costs;

-Customization of synergistic system: We can provide various synergistic compound solutions such as "magnesium hydroxide+ATH", "magnesium hydroxide+graphene", "magnesium hydroxide+nitrogen based flame retardant", etc. The addition amount can be reduced to 25% -35% to achieve UL94 V0 level, further reducing customer raw material costs and processing difficulties;

-Functional options: Provides 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 to10⁸-10¹⁰Ω, 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 cables for new energy vehicles: used for high-voltage wire harnesses and charging station cables for new energy vehicles, suitable for processing at temperatures above 300 ℃, with excellent electrical insulation performance (dielectric strength ≥ 20kV/mm), stable performance in environments ranging from -40 ℃ to 125 ℃, certified with IEC 60332-1-2 flame retardant, and meeting the GB 38031-2020 power battery safety standard;

-Rail transit/communication cables: Suitable for high-speed trains, subway cable sheaths and insulation layers, with low smoke and halogen-free characteristics to avoid smoke obstructing escape and communication in case of fire, strong weather resistance, and a service life of ≥ 20 years. Successfully applied in multiple international rail transit projects;

-High voltage power cable: used for XLPE high-voltage cable insulation layer, with low impurity content (Fe ≤ 5ppm, Cl ⁻ ≤ 20ppm), to avoid insulation aging caused by ion migration, and meet the technical requirements of the State Grid 500kV substation bidding.

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% -55% can pass UL94 V0 certification, suitable for home appliance shells, plastic trays, car bumpers and other products, widely used in home appliances such as washing machines and air conditioners, with a mechanical property retention rate of ≥ 88%;

-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, and insulation materials. Through the synergistic compounding of "magnesium hydroxide+ATH", the addition amount can be reduced to 30% to achieve UL94 V0 level, achieving a balance between flame retardancy and lightweight. The oxygen index (LOI) is ≥ 32%, which meets 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 the flame retardant level to B1 or above, with low smoke density, reducing building fire hazards, and complying with GB 55037-2022 "General Code for Building Fire Protection";

-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, buy time for personnel evacuation in a fire, comply with building fire safety design specifications, suitable for commercial buildings, hospitals, schools and other public places;

-Cable tray: Suitable for fiberglass and polyester cable trays, with the synergistic formula of "magnesium hydroxide+montmorillonite", the impact strength of the tray exceeds 5.5kJ/m2, solving the mechanical performance bottleneck of high filling systems, and successfully applied in multiple international major construction projects.

4. In the field of new energy and electronic appliances

-Power battery materials: Suitable for lithium battery casing and battery pack flame retardant buffer materials, the decomposition temperature perfectly matches the battery operating temperature (-20 ℃ -60 ℃), avoiding the spread of fire when the battery loses control of heat. The peak heat release rate (PHRR) is below 150kW/m ², improving the safety performance of new energy vehicles and energy storage equipment;

-Electronic casing/accessories: used for household appliances such as televisions, computers, printers, etc., as well as protective casings for mobile phones and tablets. The flame retardant rating reaches UL94 V0 (1.0mm), which suppresses combustion in the event of a short circuit or fire, protects internal components, and does not release toxic gases. It complies with the RoHS 2.0 standard in the electronics industry;

-5G communication equipment: used for 5G base station enclosures and flame-retardant communication cables, with stable performance in high temperature and high humidity environments, excellent dielectric constant (ε≈ 4.5), ensuring long-term stable operation of communication equipment, and meeting the rigid requirements of 5G high-frequency materials for low dielectric performance.

If you are looking for flame-retardant magnesium hydroxide, Taixing will be your best partner!