Flame Retardant Grade Aluminum Hydroxide

Flame retardant grade aluminum hydroxide, abbreviated as ATH, is a high-purity inorganic flame retardant filler (main component Al(OH)₃) prepared by precise crystallization through the Bayer process. The particle size is controlled in the range of 0.5μm-40μm. Its core value lies in balancing flame retardant efficiency, material compatibility, and environmental safety. It is widely applicable to various substrates such as PVC, PE, EVA, rubber, coatings, etc. It is a fire safety core material in the fields of electronics and electrical engineering, new energy, construction, transportation, etc.

Core strengths

1. Triple flame retardant mechanism, with excellent safety and efficiency

-Heat absorption and cooling: The decomposition reaction (2Al(OH)₃→Al₂O₃+3H₂O) is initiated within the temperature range of 180-200 ℃. Each kilogram of product absorbs 1960kJ of heat, rapidly reducing the surface temperature of the material and delaying the thermal decomposition of the polymer;

-Dilution suffocation: The water vapor produced by decomposition dilutes the concentration of combustible gases and oxygen, inhibits the combustion chain reaction, and carries away some smoke particles;

-Barrier protection: The residual dense alumina film covers the surface of the material, forming a thermal insulation and oxygen barrier protective layer, interrupting the combustion conduction path.

2. Ultra refinement and surface modification technology to solve the problem of high filling

In response to the problem of material brittleness caused by high addition of traditional ATH (40% -60%), an air flow crushing wet modification co production process is adopted to achieve:

-Accurate particle size control: D50≤1.0μm ultra-fine model, with a 40% improvement in dispersion uniformity and a 35% increase in flame retardant efficiency compared to conventional products. The minimum addition amount can be reduced to 35% and still reach UL94 V-0 level;

-Surface modification upgrade: Silane/biobased modification treatment improves compatibility with substrates such as polyolefins and epoxy resins by 50%, with a tensile strength retention rate of over 85% and a decrease in impact strength controlled within 10%;

-Low impurities and high purity: Na₂O content ≤ 0.03%, iron content ≤ 50ppm, resistivity ≥ 100Ω·m, meeting the insulation requirements of electronic grade materials.

3. Environmental protection throughout the entire lifecycle, in line with global compliance standards

-Zero halogen and zero heavy metal: certified by EU REACH, RoHS, and US TSCA, eliminating the generation of persistent pollutants such as dioxins;

-Low carbon production: adopting an integrated upstream and downstream circulation process, with direct supply of sodium aluminate solution pipeline, reducing energy consumption by 15% per ton, and reducing carbon emissions by 22% compared to the industry average level;

-Recyclability: End products can be recycled through thermal cracking technology after disposal, with a 45% increase in substrate utilization rate, in line with the requirements of the "dual carbon" strategy.

Application field

1. Electronic and Electrical Engineering and 5G Infrastructure

-Application scenarios: 5G base station casing, cable insulation sheath, electrical switch sockets, lithium battery separators;

-Core values: low conductivity, high insulation, meeting the IEC 60332 cable flame retardant standard, smoke density rating (SDR) ≤ 45, suitable for high temperature operation environment of 5G equipment, with an annual demand growth rate of 21.3%.

2. New energy vehicles

-Application scenarios: battery pack insulation layer, interior parts (seats, door panels), charging cables;

-Core value: Through thermal runaway diffusion testing, a single set of Kirin battery packs can consume up to 4.5kg, with aging resistance that meets environmental cycling requirements of -40 ℃~120 ℃, and halogen-free characteristics that comply with automotive recycling regulations.

3. Green buildings

-Application scenarios: fireproof coatings, flame-retardant carpet backing adhesive, FRP products, A-level insulation materials;

-Core value: Complies with the A-level standard of China's General Code for Building Fire Protection, has significant smoke suppression effect, reduces CO emissions by 30% in fires, and is compatible with insulation substrates such as polyurethane and polystyrene.

4. Rubber and plastic products

-Application scenarios: conveyor belts, sealing rings, PVC pipes, artificial stone slabs;

-Core Value: Dual function of filling and reinforcement, 25% improvement in wear resistance, excellent processing flowability, 15% increase in extrusion speed, and reduced production energy consumption.

Frequently Asked Questions (FAQ)

Q1: What is the difference between flame-retardant aluminum hydroxide and conventional aluminum hydroxide?

A1: Difference: ① Flame retardant performance: Flame retardant products undergo crystal shape control and interface modification, resulting in higher flame retardant efficiency, better smoke suppression effect, and less degradation of substrate performance under high filling; Conventional products have low flame retardant efficiency and are prone to substrate brittleness; ② Purity: The purity of flame-retardant products is ≥ 99.7%, with extremely low impurity content to avoid affecting the performance of the substrate; The purity of conventional products is mostly between 95% and 98%, with high impurity content; ③ Processing adaptability: Flame retardant products have lower oil absorption values and better dispersibility, making them suitable for high-speed automated production lines; Conventional products have poor dispersion, which can easily cause equipment blockage and product defects.

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