Surface Treated ATH

Surface treated ATH (aluminum hydroxide) flame retardant is a high-performance inorganic halogen-free flame retardant that precisely modifies the surface by using silane, titanate, stearic acid, and composite functional group coupling agents to address industry pain points such as poor compatibility with organic substrates, easy agglomeration, and material mechanical property degradation caused by the strong polarity and hydrophilicity of native ATH. The product covers the entire particle size range of conventional micron level and ultrafine sub micron level, and is suitable for all fields such as wires and cables, new energy vehicles, 5G infrastructure, green buildings, rubber and plastic products, etc.

Core strengths

1. Silane coupling agent treatment ATH: exclusive for high-end electronics/new energy, high insulation and high stability

Using amino, epoxy, and methacryloyloxysilane (such as KH-550, KH-560, KH-570) for chemical bonding coating, the ATH water contact angle is increased from 68 ° to over 115 ° after treatment, with a moisture absorption rate of ≤ 0.1%. The interface bonding strength with epoxy resin, EVA, and PP is significantly enhanced, and the dielectric constant is stable at 2.8-3.0 (1MHz), with a resistivity of ≥ 10 ¹⁰Ω· m. It meets the high insulation, low dielectric, and high and low temperature resistance requirements of 5G high-frequency transmission materials, power battery separators, and electronic packaging adhesives. The addition amount of 35% can achieve UL94 V-0 level flame retardancy.

2. Titanium ester coupling agent treatment ATH: exclusive for rubber processing, high fluidity and high reinforcement

For PVC pipes, conveyor belts, sealing rings and other rubber extrusion/injection molding processes, single alkoxy and chelating titanium acid esters are used for surface treatment to reduce the cohesion between ATH particles, increase the melt flow rate (MFR) of composite materials by 23%, reduce the extrusion scrap rate to below 0.8%, and achieve dual effects of flame retardancy and filling reinforcement. The material's wear resistance is improved by 25%, and the tensile strength retention rate is 88%, which is suitable for the production of rubber products with high processing efficiency and high mechanical performance requirements.

3. Surface treatment with stearic acid ATH: universal, cost-effective, easy to process, and widely adaptable

By using the stearic acid saponification coating process, ATH surface is modified to achieve oleophilic properties. The process is mature and the cost is controllable. The treated product has excellent dispersibility in common substrates such as PE, ordinary PVC, and building coatings, with no agglomeration or precipitation during processing. The flame retardant level can reach UL94 V-1/V-0, meeting the needs of small and medium-sized batches and multi category universal flame retardant scenarios. It is a cost-effective choice for upgrading traditional flame retardant systems.

4. Composite functional group surface treatment ATH: high-end customized, multi performance integrated

For harsh scenarios such as new energy vehicle battery packs, rail transit interiors, aerospace composite materials, etc., a silane+titanate, coupling agent+lubricant composite treatment process is adopted to achieve "flame retardant+high thermal conductivity+aging resistance+low smoke toxicity" multi performance integration. After treatment, the ATH thermal conductivity is ≥1.2W/(m·K), and the performance is stable in a wide temperature range of -40 ℃~120 ℃. It meets the EN45545-2:2025 rail transit low smoke and low toxicity standard, with CO generation<800ppm · min and hydrogen halide release ≤5.0g/m².

Application field

1. Wire and cable: Low smoke halogen-free cable core material, compatible with global standards

Application scenarios: Insulation sheath of medium and high voltage cables, 5G base station feeders, new energy vehicle wiring harnesses, marine cables

Core value: Silane/composite treated ATH meets the IEC 60332-1-2 cable flame retardant standard, with low smoke, low toxicity, and aging resistance. It maintains good flexibility and processability even with a filling amount of 50-60% in the low smoke halogen-free polyolefin (LSZH) system, avoiding cable cracking and transmission signal attenuation. It is the first choice for compliant exports of domestic and foreign cable enterprises.

2. New energy vehicles: The battery pack and interior are flame-retardant, balancing safety and lightweight

Application scenarios: Thermal insulation layer of power battery pack, charging gun cable, seat interior, door panel substrate

Core value: ATH treated with composite functional groups has passed the battery thermal runaway diffusion test, with stable performance in a wide temperature range of -40℃~120℃. By adding (35%) in lightweight polyolefin substrates, it can achieve UL94 V-0 level, effectively reducing the weight of the battery pack. At the same time, it burns without toxic gases, ensuring driving safety. The standard dosage of a single power battery pack is 4.5kg.

3. 5G infrastructure and electronics: high insulation and low dielectric, suitable for high-frequency transmission

Application scenarios: 5G base station casing, high-frequency copper-clad laminate, electrical switch sockets, LED packaging adhesive

Core value: Ultra fine silane treated ATH has low dielectric loss, no signal attenuation under high-frequency transmission, resistivity ≥ 10 ¹⁰Ω· m, meets the high insulation requirements of electronic devices, good dispersion uniformity, avoids product leakage, short circuit and other problems caused by particle agglomeration, and adapts to the development trend of miniaturization and high precision of 5G equipment.

4. Green building: the core of environmentally friendly and flame-retardant building materials, in line with A-level fire prevention standards

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

Core value: The ATH treated with stearic acid/titanium ester meets the A-level standard of China's General Code for Building Fire Protection. It has good compatibility with polyurethane and polystyrene insulation substrates, no precipitation, a 30% reduction in CO emissions in fires, no corrosive gases, and high whiteness (≥ 95%) to meet the appearance requirements of building decoration materials.

5. 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

Core value: titanate treatment ATH can achieve dual functions of flame retardancy and filling reinforcement, improve the wear resistance and anti-aging performance of rubber and plastic products, increase the melt flow rate by 23%, increase the extrusion speed by 15%, reduce production energy consumption, and solve the pain point of traditional flame retardant "only flame retardancy, not reinforcement".

Frequently Asked Questions (FAQ)

Q1: What is the difference between surface treated ATH and untreated ATH?

A1: Difference: ① Compatibility: Surface treated ATH is coated with functional groups and has excellent compatibility with organic substrates. Untreated ATH is prone to "agglomeration and delamination" phenomena; ② Dispersion: The dispersion uniformity of surface treated ATH is ≥ 98%. Untreated ATH has poor dispersion, which can easily lead to defects in the product; ③ Mechanical properties: The retention rate of mechanical properties of surface treated ATH under high filling is ≥ 95%. Untreated ATH with high filling can easily lead to product brittleness; ④ Processability: Surface treated ATH has a lower oil absorption value, which can improve processing fluidity. Untreated ATH will increase processing difficulty.

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