Nano Precipitated Aluminum Hydroxide

New heights in nano functional materials - Nano Precipitation Aluminum Hydroxide (NPAH) is a high-performance nanoscale inorganic functional material (chemical formula Al(OH)₃) prepared through an integrated process of "micro interface confined precipitation+gradient crystallization+membrane coupling purification". Its core advantage lies in achieving "triple ultimate control" - precise particle size locking in the 10-100nm range, with a purity of over 99.998% and a dispersion uniformity of 99.8%.

Nano precipitated aluminum hydroxide has completely broken the industry shackles of "severe aggregation of nanomaterials and poor processability", and its usage rate in new energy batteries, electronic packaging, high-end flame retardants, biomedicine and other fields has been increasing year by year. It is particularly suitable for high-end scenarios such as precision coatings, thin film extrusion, lithium battery separators, which require strict material refinement requirements, and has become the core material for downstream enterprises to achieve product performance transition and import substitution.

Core strengths

1. Micro interface confined precipitation technology: atomic level control of particle size and morphology

-Accurate and controllable particle size: By regulating the local supersaturation change rate (dS/dt), the growth of crystal nuclei is locked in the nonlinear response range. The particle size can be precisely customized in the 10-100nm range, with D50 fluctuation range of ≤± 2nm and Span value of ≤0.7 (industry average ≥1.2);

-Uniform and regular morphology: generates sheet-like or spherical single trihydrate alumina crystal form, with a stable specific surface area of 60-120m²/g, thermal decomposition temperature fluctuation of ≤±2℃, and batch consistency of flame retardant performance of 99.6%;

-Green and efficient production: Supercritical CO₂ is used as an atomization medium to achieve millisecond level transient dehydration, increasing water resource utilization by 90%, reducing wastewater discharge by 95%, and reducing energy consumption per ton of product by 30% compared to traditional processes.

Search adaptation: Do you need precise particle size nano aluminum hydroxide? Micro interface confinement technology achieves 10nm particle size control, meeting high-end requirements such as electronic packaging and precision coatings!

2. Block copolymer coating modification: achieving molecular level interface compatibility

-Leap in dispersion stability: One end of the copolymer molecular chain is anchored to the surface hydroxyl group of the nanoparticle, and the other end forms an entropy increasing compatible system with the polymer matrix. The proportion of aggregates is ≤ 0.2%, and the dispersion uniformity in the polymer matrix reaches 99.8%. There is no secondary aggregation after 96 hours of storage;

-Interface bonding strength enhancement: interface shear strength increased by 2.3 times, tensile strength retention rate ≥ 92% under 60% filling amount, impact strength increased by 45%, completely solving the problem of high filling and brittleness of nanomaterials;

-Multi functional integration: Introducing flame retardant and enhancing functional groups into the copolymer chain segment, forming a synergistic flame retardant system with nano ATH. The addition amount of 28% can reach UL94 V-0 level, reducing the filling amount by 27% compared to traditional ATH.

3. Gradient membrane coupling purification technology: ultimate control of impurity content

The integrated process of "proton exchange membrane electrolysis gradient crystallization membrane separation" is adopted to achieve selective and precise removal of impurity ions, achieving electronic grade purity standards:

-The impurity content approaches zero: Fe₂O₃≤0.3ppm，SiO₂≤0.5ppm，Na₂O≤1.2ppm, chloride ion content<5ppm, total impurity content ≤3ppm, purity reaches 99.998%, far exceeding industrial grade standards (impurity content ≥ 50ppm);

-High insulation performance: insulation resistance ≥10¹⁵Ω·cm, dielectric constant ≤ 2.6, meeting the insulation requirements of high-end applications such as electronic packaging and lithium battery separators;

-No harmful residues: The entire process is free of acid-base additives, avoiding the introduction of impurities in traditional processes. The product meets pharmaceutical grade biocompatibility standards (cytotoxicity ≤ level 1).

Search adaptation: Does the impurity of electronic/pharmaceutical grade nano aluminum hydroxide exceed the standard? Gradient membrane coupling technology achieves ppm level impurity control, with dual certification in semiconductor and biomedicine!

4. Multi functional customized modified system: adapted to meet the needs of all scenario applications

Develop four customized modification systems based on the characteristics of different downstream substrates to achieve precise functional matching:

-Silane titanate composite modification: suitable for polyolefin and EVA systems, improves processing flowability, increases melt flow rate by 35%, suitable for film extrusion and cable material production;

-Organic phosphorus synergistic modification: adapted to epoxy resin and polyurethane systems, flame retardant efficiency increased by 30%, total heat release (THR) reduced by 65%, meeting high-end flame retardant needs such as rail transit and aerospace;

-Hydrophilic modification: retaining the surface hydroxyl groups of nanoparticles, suitable for water-based coatings and biopharmaceutical fields, with a dispersion stability of up to 72 hours without precipitation;

-Thermal conductive modification: Introducing nano thermal conductive fillers to increase the thermal conductivity to 1.8W/(m·K), suitable for insulation layers of new energy battery packs and high-power electronic heat dissipation materials.

Search adaptation: Do different substrates require exclusive nano ATH? Multi functional customized modified system achieves precise matching, balancing decentralization and application performance!

Application scenarios

1. New energy batteries and lithium battery materials: dual guarantee of safety and performance improvement

-Application scenarios: lithium battery separator coating, thermal insulation layer for power battery packs, modification of positive electrode materials, electrolyte additives;

-Core value: Nano precipitation ATH is used as a membrane coating material to enhance the thermal stability (temperature resistance above 180 ℃) and puncture strength of membranes, and suppress thermal runaway; After modifying the positive electrode material, the capacity retention rate of the battery after 2000 cycles is ≥ 85%, and the thermal runaway temperature is increased from 220 ℃ to 280 ℃. It is supplied in bulk to CATL and BYD;

2. Electronic packaging and precision electronics: high-end domestic substitution for core materials

-Application scenarios: semiconductor packaging adhesive, MLCC ceramic capacitors, 5G base station casings, flame retardant coatings for circuit boards;

-Core value: 99.998% high purity and ppm level impurity control, ensuring stable dielectric performance of electronic components, dielectric constant ≤ 2.6, insulation resistance ≥ 10 ¹⁵Ω· cm, achieving import product substitution, with a domestic high-end market share of over 60%;

3. High end flame retardant and rubber products: efficient and environmentally friendly flame retardant upgrade

-Application scenarios: Low smoke halogen-free cable materials, interior of rail transit, high-end flame-retardant plastics, flame-retardant films;

-Core value: Block copolymer modified products have excellent compatibility with substrates such as EVA and PP, maintaining good flexibility even with a 60% filling amount. The tensile strength retention rate is ≥ 92%, meeting the strict flame retardant standard of IEC 60332-3C, reducing the combustion smoke density by 52%, and passing the EN45545-2:2025 rail transit low smoke and low toxicity standard;

4. Biopharmaceuticals and high-end coatings: balancing performance and biocompatibility

-Application scenarios: vaccine adjuvants, drug carriers, high-end water-based coatings, precision coatings;

-Core values: Pharmaceutical grade purity and biocompatibility (cytotoxicity ≤ level 1), as a vaccine adjuvant, can increase immunogenicity by 30%; Easy dispersion and smooth application in high-end coatings, with a 1-level increase in coating adhesion and a 40% improvement in wear resistance performance;

5. New energy vehicles and photovoltaics: adapting to extreme environmental demands

-Application scenarios: interior of new energy vehicles, photovoltaic cable materials, insulation layer of battery packs, flame-retardant components of charging piles;

-Core value: Stable performance in a wide temperature range of -40 ℃ to 120 ℃, interface peel strength attenuation rate of less than 5% after 100 thermal cycles, high thermal conductivity products with a thermal conductivity of ≥1.8W/(m·K), effectively reducing battery temperature rise, and passing extreme environmental testing for new energy vehicles;

Frequently Asked Questions (FAQ)

Q1: What is the difference between nano precipitated aluminum hydroxide and ordinary nano ATH?

A1: Difference: ① Particle size uniformity: The particle size distribution SPAN of nano precipitated ATH is ≤ 0.8, while ordinary nano ATH is mostly above 1.5; ② Dispersion: Nano precipitation ATH can achieve monodispersity, while ordinary nano ATH is prone to form hard aggregates; ③ Purity: The total amount of impurities in nano precipitated ATH is ≤ 1ppm, while the content of ordinary nano ATH impurities is mostly above 10ppm. Only the former can meet the needs of cutting-edge fields.

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