Heat Stable Aluminum Hypophosphite

The heat stable aluminum hypophosphite CAS No.: 7784-22-7 produced by Taixing adopts the core technology of directional crystallization purification+microcapsule silane composite coating, and constructs a triple system of "high-temperature stable protection - phosphorus aluminum synergistic flame retardant - interface compatibility optimization". With only 8% -25% addition, the material can achieve UL 94 V-0 flame retardant, completely solving the industry problems of "insufficient thermal stability, uneven dispersion, and toxic gas release" of traditional aluminum hypophosphite. It is the preferred solution for flame retardant modification of high-temperature processing materials.

Core strengths

1. Excellent thermal stability

·High decomposition starting temperature: The thermal decomposition temperature (TGA, 5% weight loss) is ≥ 320 ° C, which is about 40 ° C higher than conventional aluminum hypophosphite.

·High temperature processing: It can maintain chemical stability at processing temperatures above 300 ° C and is suitable for high-temperature engineering plastics such as PBT, PA6, PA66, PET, PPS, etc.

·Reduce processing degradation: effectively prevent discoloration, foaming, or performance degradation caused by the decomposition of flame retardants during processing.

2. Efficient flame retardant performance

·Low dosage and high-efficiency flame retardant: Adding 15-30% of various polymers can achieve UL94 V-0 (1.6mm) level.

·Gas phase and condensation mechanism synergy: Thermal decomposition produces PO · radicals, effectively capturing H · and OH · radicals in the combustion chain reaction, while promoting char formation in the condensed phase.

·Low smoke and low toxicity: During combustion, the smoke density is low and does not produce corrosive toxic gases such as hydrogen halides.

3. Excellent material compatibility

·Surface modification treatment: using special silane/titanate composite coating technology to enhance the interfacial bonding with the polymer matrix.

·The impact on mechanical properties is minimal: the influence on the tensile strength, impact strength, and electrical properties of the matrix material is significantly lower than that of conventional flame retardant systems.

·High filling flowability: optimized particle morphology, uniform particle size distribution (D50 ≈ 3-8 μ m adjustable), easy to process and disperse, improving production efficiency.

4. Environment

·Low dust design: Particle surface treatment reduces dust flying and improves production environment.

Application field

High temperature engineering plastics

·PBT/PET: connectors, relays, coil frames, automotive components.

·PA6/PA66: Electronic and electrical enclosures, fan blades, and power tool components.

·PPS: High temperature resistant sockets, relays, automotive sensors.

·High temperature Nylon (PPA): LED bracket, automotive intake manifold.

Insulation and sheathing materials for wires and cables

·Cross linked polyethylene (XLPE), EVA and other halogen-free flame-retardant cable materials meet the GWIT requirement of ≥ 850 ° C.

Thermoplastic elastomers (TPU, TPE)

·Used for cables and electronic accessories that require flame retardancy and flexibility.

Special coatings and adhesives

·Provide an expandable flame retardant coating for the protection of steel structures or electronic components.

If you are looking for heat stable aluminum hypophosphite, heat stable flame retardants, PA/PET specific flame retardants, PBT flame retardants, Taixing will be your best partner, and we will offer the most favorable cooperation price. Welcome to contact and negotiate!