2 Micron Magnesium Hydroxide

The 2-micron magnesium hydroxide (Mg(OH)₂) produced by Taixing precisely controls the median particle size (D50) of magnesium hydroxide (MDH) within a narrow distribution range of 2.0±0.3 microns. Non-toxic, halogen-free, low-smoke, and environmentally friendly, it achieves an unprecedented optimal balance between flame retardancy efficiency, material mechanical property retention, processing fluidity, and overall cost. It is widely applicable in modified plastics, new energy, wires and cables, environmental protection, and high-end building materials.

Core strengths

1. The "critical size effect" of flame retardant efficiency:

·At a scale of 2 microns, the specific surface area of particles significantly increases, allowing for more thorough contact with polymers. The reaction is more synchronous and intense during thermal decomposition, resulting in an increase of approximately 15-25% in heat absorption and cooling efficiency.

·The residual carbon (MgO layer) formed after combustion is denser and more continuous, greatly enhancing the barrier effect.

2. "Enhancement turning point" of mechanical properties:

·When the particle size is less than 3 microns, the particles gradually transition from "defects" to "strengthening points" in the polymer. 2 micron particles can effectively trigger silver lines and prevent their expansion, and can even increase tensile and bending moduli without sacrificing toughness.

·Far superior to the serious damage caused by coarse particles to impact strength, it also avoids the performance instability caused by nanoparticle aggregation.

3. The "best window" for processing fluidity:

·Compared to submicron or nano particles, 2-micron particles have lower specific surface area and surface energy, greatly reducing the energy required for resin encapsulation and the internal friction between particles.

·At the same filling amount, the melt flow index (MFI) can be increased by 30-50% compared to using 5-micron fillers, and the filling ability is significantly improved.

Technical parameter table (2-micron magnesium hydroxide)

Note: We support personalized services such as particle size adjustment (1.8-2.2 μ m) and modifier customization based on the specific substrate, processing technology, and target scenario of the customer. We can provide technical support for the entire process of small-scale and pilot testing.

Application field

1. Modified plastics and engineering plastics field

-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 for 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.

2. In the field of wires and cables

-New energy vehicle cables: used for high-voltage wire harnesses and charging station cables of new energy vehicles, with a decomposition temperature suitable for processing technology above 300 ℃, excellent electrical insulation performance (dielectric strength ≥ 20kV/mm), stable performance in an environment of -40 ℃ -125 ℃, and passing IEC 60332-1-2 flame retardant certification.

-Rail Transit/Communication Cable: 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. It has been successfully applied in multiple international rail transit projects.

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

3. Environmental governance field

-Acidic wastewater treatment: As an environmentally friendly neutralizing agent, the reaction is gentle when neutralizing acidic wastewater, with pH fluctuations of ≤± 0.3. The adsorption capacity for heavy metal ions (Pb ² ⁺, Hg ² ⁺, Cr ⁶ ⁺) is ≥ 120mg/g, and the adsorption rate is fast (reaching adsorption equilibrium time ≤ 30min). The treated wastewater can meet the GB 8978-1996 discharge standard.

-Flue gas desulfurization: used for flue gas desulfurization in industrial boilers and power plants, with a desulfurization efficiency of ≥ 95%. Compared with limestone desulfurization, the amount used is reduced by 30%. The by-products can be recycled and reused without secondary pollution, which meets the requirements of environmental protection policies.

-Soil remediation: Used for the remediation of heavy metal contaminated soil, it fixes heavy metal ions through adsorption and chemical precipitation, reduces soil heavy metal migration, and the remediated soil can meet agricultural land standards.

4. Other high-end fields

-Pharmaceutical excipients: Used as raw materials for antacids, pharmaceutical preparations for relieving excessive stomach acid (such as gastric mucosal protectants, acid fast chewable tablets), with a pH value of 9.2-9.8 in a 10% aqueous solution, gently neutralizing stomach acid without affecting intestinal microbiota balance, in compliance with USP (United States Pharmacopeia) and Ph.Eur. (European Pharmacopeia) standards.

-High end building materials: used for expansion fireproof coatings and high-end insulation boards. Adding 30% -40% can make the coating have a fire resistance time of ≥ 1.5 hours. The insulation board has a flame retardant rating of B1 or above, low smoke density, and is suitable for commercial buildings, hospitals, schools, and other public places.

-Electronic heat dissipation material: The sheet-like structure can form an efficient thermal conductivity path, and after composite with polymer materials, the thermal conductivity is increased to 1.2W/(m · K) or above, which is suitable for the heat dissipation needs of 5G base stations and electronic components, ensuring long-term stable operation of equipment.

Frequently Asked Questions (FAQ)

Q1：What is the core difference between 2-micron magnesium hydroxide and products at the nanoscale or above 5 microns?  

A1: The core difference lies in performance balance and application scenarios: ① Nano scale products (D50 ≤ 1 μ m) have a large specific surface area but are prone to agglomeration, high processing difficulty, and high cost, making them suitable for high-end scenarios such as precision electronics; ② The 2-micron product balances "specific surface area and dispersibility", and can adapt to most scenarios without complex processing, with the best cost performance ratio; ③ Products with particle size greater than 5 microns have poor dispersibility and require high addition levels to meet performance requirements, making them suitable for low-end filling and extensive flame retardant scenarios.

Q2：Are there any special requirements for the storage and transportation of 2-micron magnesium hydroxide products?   

A2: Storage should meet the conditions of "dry, ventilated, and cool": temperature should be controlled at 5-35 ℃, relative humidity should be ≤ 70%, avoid moisture and direct sunlight, and stay away from acidic substances; No special qualifications are required during transportation (non hazardous chemicals) to prevent packaging damage and rain. The packaging is made of 25kg laminated woven bags (with PE inner film) or 1000kg ton bags, which are moisture-proof and leak proof.

If you are looking for 2 micron magnesium hydroxide, 2 μ m magnesium hydroxide, precise particle size magnesium hydroxide, environmentally friendly magnesium hydroxide, modified magnesium hydroxide, Taixing will be your best partner, and we will offer the lowest price for each!