High Loading Grade Aluminum Hydroxide

High Loading Aluminum Hydroxide (HL-ATH) is a high-performance inorganic halogen-free flame retardant developed through directional crystal optimization, composite wet modification, and narrow particle size distribution design to address industry pain points such as sudden drops in substrate mechanical properties, high processing viscosity, and poor dispersion caused by traditional high filling of aluminum hydroxide. It is the best material for achieving high flame retardant levels and low-cost formulations in fields such as wire and cable, rubber products, green buildings, and new energy auxiliary materials.

Core strengths

1. Directional crystal structure optimization: reducing high filling processing resistance from the root

Using seed induced nucleation technology, customized development of sheet-like+spherical composite crystal high load ATH, compared to traditional amorphous ATH:

-The friction between particles is reduced by 40%, the viscosity of the composite material melt is reduced by 35%, there is no sticking or breakage phenomenon in extrusion and injection molding, and the processing efficiency is improved by 25%;

-The sheet-like crystal form forms a "layer barrier network" in the substrate, which increases the flame retardant efficiency by 20%. Under 80% filling amount, UL94 V-0 level+IEC 60332-3C cable flame retardant dual certification can be achieved;

-Crystal regularity ≥ 95%, batch performance deviation ≤ 2%, suitable for industrial large-scale production needs.

2. Composite wet modification: achieving a leap in interfacial compatibility properties

Breaking through the shortcomings of uneven coating and poor compatibility in traditional dry modification, the wet modification process of oleic acid+Span series composite non-ionic surfactants is adopted. After constant temperature stirring, vacuum filtration, and precise coating, three core improvements are achieved:

-Surface oleophilic reconstruction: The water contact angle has been increased from the original 25 ° to 118 °, with an activation index of ≥ 98% and a moisture absorption rate of ≤ 0.08%. It achieves molecular level compatibility with non-polar substrates such as PP, EVA, and rubber, without aggregation or precipitation;

-Interface bonding strength enhancement: The modifier forms stable ionic bonds with the ATH surface, increasing the interfacial shear strength by 2.5 times. The retention rate of substrate fracture elongation at 70% filling is ≥ 85%, completely solving the problem of high filling induced brittleness;

-Green and environmentally friendly process: The biodegradation rate of the modifier is ≥ 90%, the reuse rate of production wastewater is ≥ 95%, there are no VOC or heavy metal emissions, and it is in line with the global dual carbon strategy.

3. Narrow particle size distribution design: constructing a high filling and dense filling system

Adopting multi-stage airflow crushing+AI intelligent grading technology, the particle size D50 is accurately controlled within 2-8μm, with a Span value ≤ 0.8, D90/D10≤2.5， Far superior to the industry average:

-Large, medium, and small particles are tightly packed, with a 30% increase in filling density, and the processing fluidity and formability of the substrate can still be guaranteed under 80% high load;

-No coarse particle impurities, avoiding equipment wear during processing, and preventing defects such as pitting and scratches on the substrate surface, improving the appearance qualification rate of finished products;

-We can customize the particle size distribution according to the characteristics of the customer's substrate, to meet the processing needs of different scenarios such as wire and cable sheaths, rubber pipes, fireproof coatings, etc.

4. Low impurity precise control: balancing high load and high stability

Adopting gradient precipitation+ion exchange purification process, the content of key impurities such as Fe, Na, Si is strictly controlled, and the purity of the main component Al(OH)₃ is ≥ 99.9%:

- Fe₂O₃≤30ppm,Na₂O≤15ppm,SiO₂≤20ppm, chloride ion content<10ppm, resistivity ≥ 10 ¹⁰Ω· m, meeting the high insulation requirements of wires, cables, and electronic auxiliary materials;

-When the high whiteness L value is ≥ 96, there is no need to add additional whitening agents when applied in building decoration and household appliance rubber parts, balancing flame retardancy and appearance;

-Excellent thermal stability, no significant weight loss below 300 ℃, no decomposition or bubbles during processing, ensuring the processing stability of high filling systems.

Application field

1. Wire and cable: Low smoke halogen-free cable core material, preferred for high filling and cost reduction

Application scenarios: Insulation sheath of medium and high voltage cables, 5G base station feeders, new energy vehicle wiring harnesses, low smoke halogen-free cables for ships

Core value: Maintaining good flexibility and aging resistance of cable materials under high filling levels of 60% -70%, meeting the strict flame retardant standards of IEC 60332-3C, low smoke density during combustion, no toxic gases, and significantly reducing resin usage. The formula cost is reduced by 15% -20%, making it the core choice for compliant exports of domestic and foreign cable enterprises.

2. Rubber and plastic products: integrated flame retardant reinforcement to improve processing efficiency

Application scenarios: PVC pipes/profiles, rubber conveyor belts, sealing rings, artificial stone slabs, polyolefin blow molded products

Core value: achieve the dual effect of flame retardancy and filling reinforcement under 70% -75% high filling, improve the abrasion resistance of rubber and plastic products by 30%, anti-aging performance by 25%, melt flow rate by 30%, extrusion speed by 20%, reduce production energy consumption, and solve the three major pain points of traditional flame retardants "only flame retardancy, no reinforcement, high filling and difficult processing".

3. Green building: A-level fireproof building material core, high filling and high cost-effectiveness

Application scenarios: A-level fireproof coatings, flame-retardant insulation boards, PVC flooring, FRP building products, building sealants

Core value: 75% -80% ultra-high filling significantly reduces the raw material cost of fire-resistant building materials, meets the A-level standard of China's "General Code for Building Fire Protection", reduces CO emissions by 40% in fires, has no corrosive gas release, high whiteness characteristics suitable for the appearance requirements of building decoration materials, and has excellent compatibility with insulation substrates such as polyurethane and polystyrene without any appearance.

4. New energy auxiliary materials: high flame retardancy and stability, suitable for lithium battery matching needs

Application scenarios: thermal insulation layer for power battery packs, interior substrates for new energy vehicles, auxiliary materials for lithium battery packaging, photovoltaic cable materials

Core value: With a high filling rate of 65% -75%, it combines high flame retardancy and high thermal conductivity (thermal conductivity ≥ 1.0W/(m · K)), with stable performance in a wide temperature range of -40 ℃~120 ℃. Through battery thermal runaway diffusion testing, it burns without toxic gases, ensuring the safety of lithium battery use. At the same time, its high insulation properties avoid problems such as leakage and short circuit, and adapt to the strict requirements of the new energy industry.

5. General flame retardant products: high filling to reduce costs, suitable for small and medium-sized batch production

Application scenarios: Daily rubber products, flame retardant toys, packaging flame retardant materials, low-voltage electrical enclosures

Core value: 60% -70% high filling content achieves the optimal balance between flame retardant grade and production cost, excellent processing performance, no need to adjust existing production equipment, can directly replace traditional aluminum hydroxide, helping small and medium-sized enterprises achieve flame retardant upgrades while reducing formula costs by 10% -15%.

Frequently Asked Questions (FAQ)

Q1: What is the difference between high load grade aluminum hydroxide and conventional aluminum hydroxide?

A1: Difference: ① Filling limit: The maximum filling ratio of high load level ATH can reach 65%, while conventional ATH is only 30% -40%; ② Performance degradation: The mechanical performance retention rate of high load level ATH under high filling is ≥ 90%. Conventional ATH with high filling is prone to product brittleness; ③ Cost advantage: High load ATH can significantly reduce resin usage, lower downstream product raw material costs by 25% -35%, and conventional ATH has limited cost reduction effect.

If you are looking for high load grade aluminum hydroxide, high filling ATH flame retardant, high load modified aluminum hydroxide, low viscosity high load ATH, high load ATH wire and cable special, Taixing will be your best partner, and we will provide the lowest price cooperation!