ATH Flame Retardant

ATH (Aluminum Trihydroxide) flame retardant, a performance benchmark in the field of inorganic flame retardancy, is an inorganic halogen-free flame retardant filler prepared by high-precision precipitation method and crystal control technology. Its core flame retardant mechanism originates from triple synergistic effect: it absorbs 1050 J/g of high heat during thermal decomposition at 180-220 ℃, rapidly reducing the substrate temperature; The released water vapor dilutes the concentration of combustible gases and blocks the chain reaction of combustion; The residual dense alumina film forms a thermal and oxygen barrier to contain the spread of flames from the source. Widely adaptable to various substrates such as thermoplastic, thermosetting resin, rubber, coatings, etc., it has become the preferred flame retardant solution in high-end fields such as electronics and electrical, new energy, rail transit, and building materials.

Core strengths

1. Ultra fine particle size and bimodal distribution technology: balancing flame retardant efficiency and processability

Breaking through the problem of soaring melt viscosity caused by traditional ATH high filling, adopting the co production process of "airflow crushing+grading screening" to achieve precise particle size control:

-Submicron model (D50=0.5-1.0μm): The specific surface area is increased to 25-35 m ²/g, and the flame retardant efficiency is 30% higher than conventional products. The addition amount in EVA cable material can reach UL94 V-0 level as low as 38%;

-Dual peak particle size composite system (D50=0.3μm+1.2μm): By synergistically filling coarse and fine particles, the melt flow rate (MFR) is increased by 23% while ensuring high flame retardancy. It is suitable for efficient processing techniques such as injection molding and extrusion, and the scrap rate is reduced to below 0.8%;

-Nano level high-end model (D50≤0.5μm): For electronic packaging, optical thin films and other scenarios, it achieves a perfect balance between flame retardancy and transparency, with a dielectric strength of 25kV/mm, meeting the insulation requirements of precision electronic components.

2. Multi functional surface modification: solving the pain points of compatibility and mechanical properties

By using silane coupling agents and bio based fatty acid composite modification technology, the ATH surface was subjected to oleophilic treatment, achieving three major breakthroughs:

-Interface compatibility improved by 50%: perfectly integrated with polyolefin substrates such as PP, PE, PVC, etc., with a high filling (60% addition) and a tensile strength retention rate of 85%, the impact strength decreased by ≤ 10%;

-Significant enhancement of hydrophobicity: water contact angle ≥ 110 °, moisture absorption rate ≤ 0.15%, effectively avoiding clumping and performance degradation during material storage;

-Optimization of processing stability: The thermal stability has been improved to above 230 ℃, suitable for high-temperature processing substrates such as nylon 66 and polycarbonate, and the flame retardant level remains unchanged after repeated processing.

3. High purity refining process: suitable for high-end scenarios with strict requirements

Develop high-purity ATH products in response to strict restrictions on impurity content in fields such as electronics and rail transit

-The main content of Al(OH)₃ is ≥ 99.5%, the content of Al₂O₃ is ≥ 65.2%, the content of Fe₂O₃ is ≤ 50ppm, and the content of Na₂O is ≤ 0.03%, to eliminate the influence of impurities on the electrical properties and weather resistance of the material;

-Low conductivity characteristics: resistivity ≥100Ω·m, meeting the insulation requirements of high-end electronic components such as 5G base stations and lithium battery separators;

-High whiteness standard (L*≥96): Suitable for scenarios with high appearance requirements such as home appliance casings and building decoration materials, with excellent UV transparency and extended product service life.

4. Collaborative flame retardant formula: customized to meet the needs of segmented scenarios

Innovatively develop ATH and phosphorus based, nitrogen based, and nano layered double hydroxide (LDH) composite systems to achieve functional upgrades for different scenarios:

-Special for rail transit: Passed EN45545-2:2025 R22 certification, with CO generation<1000 ppm·min and total hydrogen halide release ≤ 5.0 g/m ² under 600 ℃ pyrolysis conditions;

-New energy vehicle specific model: Through battery thermal runaway diffusion testing, it maintains stable flame retardant performance in a wide temperature range of -40 ℃~120 ℃, and is compatible with key components such as battery insulation layer and charging cables;

-Low VOC environmentally friendly version: with a volatile organic compound content of ≤ 50ppm, it meets the strict environmental standards for mother and baby products, high-end home appliances, and other scenarios.

Application scenarios

1. Electronic and Electrical Engineering and 5G Infrastructure

-Application scenarios: 5G base station casing, data cables, electrical switches, lithium battery separators;

-Core values: Low smoke and halogen-free, high insulation, meeting the IEC 60332 cable flame retardant standard, suitable for high-frequency transmission environments, with an annual demand growth rate of 21.3%;

2. New energy vehicles

-Application scenarios: battery pack insulation layer, charging gun cable, interior parts (seats, door panels), wiring harness;

-Core value: high and low temperature resistance (-40 ℃~120 ℃), anti-aging, single set of power battery pack up to 4.5kg, passing UL94 V-0 and thermal runaway test;

-Search intention adaptation: How to choose flame retardant materials for new energy vehicles? Customized ATH solution balances safety and lightweight, reducing overall costs by 15%!

3. Rail Transit

-Application scenarios: train interior panels, braking components, high-voltage cables, seals;

-Core Value: Compliant with the latest EN45545-2:2025 standard, smoke density ax ≤ 200, toxicity index (TI) ≤ 3.2, ensuring passenger safety in fire scenarios;

4. Green buildings

-Application scenarios: A-level insulation materials, fireproof coatings, PVC flooring, FRP products;

-Core Value: Meets GB/T 2408-2021 Building Fire Protection Standards, reduces CO emissions by 30% in fires, has no corrosive gases, and is compatible with insulation substrates such as polyurethane and polystyrene;

-Search intention adaptation: environmentally friendly flame retardants for construction? High whiteness ATH combines fire resistance and decorative properties, certified as a green building material!

Frequently Asked Questions (FAQ)

Q1: What is the difference between ATH flame retardants and halogenated flame retardants?

A1: Difference: ① Environmental friendliness: ATH is halogen-free and phosphate free, in line with global halogen-free policies, and will not release toxic hydrogen halide gases; The combustion of halogenated flame retardants releases toxic gases, which have been restricted for use in most countries. ② Safety performance: ATH has low smoke density and low smoke toxicity, which can reduce the risk of suffocation in case of fire; Halogen flame retardants have high smoke volume and toxicity. ③ Long term stability: ATH has long-lasting flame retardant properties and is not easily precipitated; Halogen flame retardants are prone to migration and precipitation, leading to a decline in the flame retardant performance of the product. ④ Cost: ATH has low raw material costs and a comprehensive usage cost that is more than 32% lower than halogenated flame retardants.

If you are looking for a cost-effective ATH supplier? Taixing will be your best partner!