High Whiteness ATH

High whiteness ATH (Aluminum Trihydroxide) flame retardant, also known as high-purity grade product of aluminum hydroxide (Al(OH)₃), is an inorganic halogen-free flame retardant material prepared through an integrated process of "controllable precipitation in-situ modification precision purification". The core purity covers three levels: 4N (99.99%), 5N (99.999%), and 6N (99.9999%), achieving triple flame retardant synergy of heat absorption and cooling, gas dilution, and oxygen barrier film formation. The smoke density during combustion is ≤ 35, and there is no toxic gas release, fully meeting the upgrading of global environmental regulations and high-end material performance requirements. Specially designed for high-end fields such as electronics and electrical, new energy, semiconductors, aerospace, etc.

Core strengths

1. Ultra pure purification process: achieving semiconductor level impurity control

Breakthrough the purity bottleneck of traditional wet process technology, adopt the triple process of "gradient precipitation microwave purification ion exchange", and construct a comprehensive impurity removal system:

-Principal component purity: 4N grade Al(OH)₃ ≥ 99.99%, 5N grade ≥ 99.999%, 6N grade ≥ 99.9999%, Al₂O₃ content ≥ 64.5% (6N grade);

-Strict control of key impurities: Fe≤3ppm, Na ≤ 5ppm, Si ≤ 2ppm, Cl ⁻ ≤ 10ppm, far superior to industry standards (Fe ≤ 50ppm, Na ≤ 300ppm);

-Low conductivity characteristics: resistivity ≥ 10¹⁰Ω·m, dielectric constant stable at 2.8-3.0 (1MHz), meeting the insulation requirements of semiconductor and high-frequency communication equipment.

2. Precise control of nanoscale particle size: balancing flame retardant efficiency and processability

Using the technology of "seed crystal induced nucleation+AI process control", precise customization of particle size from submicron to nanometer level is achieved:

-Particle size range: D50=0.1μm-1.0μm, with a minimum of 0.08 μ m (nanometer level), batch CV value (coefficient of variation) ≤ 3.5%, far better than the industry average of 7.8%;

-Spheroidization optimization: through the spray granulation high temperature crystallization process, the sphericity is ≥ 0.92, the specific surface area is 40-50 m ²/g, and the dispersion stability in the polymer matrix is improved to more than 96 hours;

-Low filling and high flame retardant: 6N grade products can achieve UL94 V-0 grade with a low addition of 32% in EVA and epoxy resin, reducing the filling amount by 25% compared to conventional ATH and significantly preserving the mechanical properties of the substrate.

3. In situ gradient modification technology: solving the pain points of interface compatibility

Innovatively develop the "dual functional coupling agent gradient coating" process to achieve chemical bonding between ATH and substrate:

-Modified system: inner layer anchored with amino silane, outer layer hydrophobic modified with long-chain alkyl silane/phosphate ester, water contact angle increased from 68 ° to 110 °, moisture absorption rate ≤ 0.1%;

-Compatibility breakthrough: When the filling amount in PVC, PP, and epoxy resins reaches 65%, the tensile strength retention rate is ≥ 88%, and the impact strength decreases by ≤ 8%, far exceeding industry standards (tensile strength retention rate ≥ 75%);

-Function expansion: Customizable flame retardant+self-cleaning, flame retardant+high thermal conductivity composite functions, suitable for special scene requirements (such as aerospace composite materials, power battery insulation layers).

4. Green closed-loop production: in line with the global dual carbon strategy

Constructing a green process system of "low alkali precipitation closed-loop water circulation low-temperature roasting" to achieve a win-win situation for both environment and benefits:

-Energy consumption optimization: The comprehensive energy consumption per ton of product has been reduced to 1.35 tons of standard coal, a 25% decrease compared to traditional processes, and carbon emissions have been reduced by more than 30%;

-Resource recycling: The reuse rate of production wastewater is ≥ 95%, and the recovery rate of by-products such as red mud reaches 72%, which meets the requirements of circular economy;

-No harmful emissions: The production process releases no heavy metals or volatile organic compounds (VOCs), and has passed the highest level certification of ISO 14001 environmental management system.

5. Collaborative flame retardant formula: customized adaptation to segmented scenarios

Develop a collaborative system of ATH with phosphorus based, nitrogen based, and nano LDH to meet the personalized needs of high-end fields

-Specialized for semiconductor packaging: flame retardant+low dielectric+high temperature resistance (280 ℃), certified by SEMI semiconductor materials;

-Special for power batteries: flame retardant+high thermal conductivity (thermal conductivity ≥ 1.2W/(m · K)), thermal runaway delay time ≥ 30 minutes;

-Dedicated for rail transit: low smoke and low toxicity (CO generation<800ppm · min), meeting the EN45545-2:2025 R22 standard.

Application scenarios

1. Semiconductor and Electronic Packaging

-Application scenarios: 12 inch silicon wafer CMP polishing solution, semiconductor packaging resin, electronic component casing;

-Core value: 6N purity meets the requirements of semiconductor grade impurities, stable dielectric performance, flame retardancy, and ensures the efficiency of electronic signal transmission;

2. New energy vehicles and power batteries

-Application scenarios: power battery diaphragm coating, battery pack insulation layer, charging gun cable, lightweight interior parts;

-Core value: High thermal conductivity+resistance to high and low temperatures (-40 ℃~120 ℃), passing thermal runaway diffusion testing, with a single power battery pack consumption of 5.2kg;

3. 5G infrastructure and high-frequency communication

-Application scenarios: 5G base station casing, high-frequency transmission cables, LTCC low-temperature co fired ceramic substrates;

-Core values: Low dielectric constant (2.8-3.0), low loss factor, meeting the needs of 5G high-frequency signal transmission, with a flame retardant rating of UL94 V-0;

4. Aerospace and high-end manufacturing

-Application scenarios: Carbon fiber epoxy composite materials, aircraft interior parts, aerospace equipment flame retardant coatings;

-Core values: High mechanical performance retention rate (tensile strength ≥ 20MPa when filled with 60%), aging resistance meets aviation grade standards;

-Search intention adaptation: Which is the best aerospace flame retardant material? Customized ATH solution balances flame retardancy, weight reduction, and reliability!

5. Rail Transit

-Application scenarios: high-speed rail/subway interior panels, high-voltage cables, braking components;

-Core value: Low smoke, low toxicity, non corrosive gas, passed the latest EN45545-2:2025 standard, smoke density ax ≤ 150;

Frequently Asked Questions (FAQ)

Q1: What is the difference between high whiteness ATH and regular ATH?

A1: Difference: ① Whiteness: High whiteness ATH whiteness ≥ 99.5%, conventional ATH whiteness ≤ 98%, the former can meet the aesthetic needs of high-end products; ② Impurities: High whiteness ATH iron, titanium and other colored impurities have extremely low content, avoiding the appearance of color spots and black spots in the product. Conventional ATH impurities have high content; ③ Adaptability: High whiteness ATH is treated with crystal structure high light and modification, resulting in better dispersion without affecting the glossiness and transparency of the substrate. Conventional ATH can easily cause the substrate to become gray and rough.

If you are a supplier of green and environmentally friendly high-purity ATH, high whiteness ATH, high whiteness aluminum hydroxide flame retardant, halogen-free high whiteness flame retardant substrate, Taixing will be your good partner, and we will provide the lowest price cooperation!