Flame retardant aluminum phosphite

The flame retardant aluminum phosphite produced by TaiXing employs the core technology of high-temperature crystallization restructuring and silane coupling agent coating modification, creating a high-purity crystalline product. It forms an ultra-strong synergistic effect with phosphorus-based flame retardants such as aluminum diethylphosphinate (ADP). In materials like glass fiber-reinforced nylon (PA6/PA66) and polyester (PBT/PET), only a 5%-8% addition is required to achieve UL 94 V-0 flame retardancy. At the same time, it addresses industry challenges such as acidic corrosion, processing discoloration, and poor water resistance of traditional products, providing compliant and efficient flame retardant solutions for high-end fields like electronics, electrical equipment, new energy vehicles, and charging piles.

Product advantages

1. Upgraded crystalline structure, with comprehensive performance surpassing amorphous form

-Adopting gradient heating crystallization process (slowly heating to 350 ℃ for 5-10 hours), a stable hexagonal crystal structure is formed, and the thermal decomposition temperature is raised to above 410 ℃, far exceeding the amorphous aluminum phosphate (320 ℃), suitable for engineering plastics processing needs above 300 ℃, without decomposition or yellowing.

-The crystalline structure significantly reduces moisture absorption and acidity, with a water absorption rate of ≤ 0.3% (24-hour immersion test). The pH value of the aqueous solution remains stable at 4.5-5.5, avoiding corrosion of processing equipment and degradation of polymer substrates, and solving the problems of product brittleness and decreased electrical insulation caused by traditional products.

-Purity ≥ 99.5%, phosphorus content ≥ 30%, high proportion of effective flame retardant components, synergistic efficiency with flame retardants increased by 40% compared to amorphous products, significantly reducing the overall flame retardant system dosage.

2. Super synergistic flame retardant, low addition for efficient protection

-Forming a dual synergistic mechanism of "condensed phase carbonization+gas-phase flame suppression" with phosphorus based flame retardants such as diethylaluminum hypophosphite and ammonium polyphosphate (MPP): promoting the formation of a dense and continuous carbon layer on the substrate, increasing the density of the carbon layer by 50%, while capturing combustion free radicals and blocking chain reactions.

-Excellent performance in the glass fiber reinforced PA system: PA6+30% GF added 5.5% flame retardant aluminum phosphite+11% ADP, with a thickness of 1.6mm, can stably reach UL 94 V-0 level, and the limit oxygen index (LOI) is ≥ 34%, which is 25% less than the addition of a single ADP system.

-The halogen-free and low smoke characteristics are outstanding, and there is no release of corrosive gases such as hydrogen halides during combustion. The smoke density (DS, 4 minutes) is ≤ 150, and the smoke toxicity meets the EU EN 13501-1:2024 safety standard, improving the safety of fire scenarios.

3.Full dimensional compliance, breaking through global trade barriers

-Completely free of harmful substances such as halogens, heavy metals, and polybrominated diphenyl ethers (PBDE), it has passed the EU REACH 2025 SVHC list, RoHS 2.0 directive, US TSCA compliance assessment, and Chinese GB/T 2408-2021 halogen-free standard.

-The extractable content is ≤ 8ppm, with no risk of precipitation, meeting the long-term stability requirements for electronic and electrical products, and suitable for key components such as charging stations and high-voltage wiring harnesses.

-Waste products can be recycled through mechanical means, with no residual pollution from flame retardant ingredients, helping customers obtain green supply chain certification and carbon footprint labels for their products, and enhancing their competitiveness in the international market.

Application field

Electronics and Electrical

Connectors, sockets, switch housings

· Insulation and sheathing of electrical wires and cables

Charger housing, battery module casing

automotive industry

· New Energy Vehicle Battery Module Bracket

Interior trim parts (dashboard, door panels, seat components)

```Heat-resistant components around the engine```

building materials

Fireproof coatings, sealants

· Flame-retardant panels, thermal insulation materials

· Cable tray, pipe protection layer

Textiles and Home Furnishings

Flame-retardant curtains, carpets, and sofa fabrics

Protective workwear, tent materials

Engineering Plastics and Composite Materials

Flame-retardant modified materials such as PA6, PA66, PBT, PET, PP, PE, and EPDM

Packaging and Storage

Packaging: 25 kg/bag, lined with aluminum foil bag, outer layer woven bag; or 500 kg/flexitank.

Storage: Store in a cool, dry, and well-ventilated place to avoid moisture absorption and caking. Shelf life is 24 months when unopened.

· Safety measures: Wear a dust mask and safety goggles. If contact with eyes or skin occurs, rinse with clean water.

If you are looking for flame-retardant aluminum phosphite, UL94 flame retardants, crystalline aluminum phosphite, or polymer flame-retardant additives, Taixing will be your best partner. We will offer the most favorable cooperation prices. Welcome to connect and discuss!