Ammonium Polyphosphate (N=1000)

Traditional flame retardants face industry pain points such as unstable polymerization degree, poor water resistance, insufficient compatibility, and high compliance risks. The ammonium polyphosphate (n=1000) developed and produced by Taixing innovatively adopts the core technology of ammonia pressure precise control polymerization+nano silane melamine composite coating, and constructs a triple synergistic system of "catalytic dense carbonization - expanded oxygen thermal barrier - gas-phase free radical quenching". With only 10% -22% addition, the material can achieve UL 94 V-0 level flame retardancy, completely solving the key problems of "moisture absorption migration, carbonization looseness, and performance degradation" in traditional APP, and providing a flame retardant solution that combines ultimate performance and compliance guarantee for the global manufacturing industry.

Core strengths

1. Precise aggregation degree locking, benchmark for water resistance and stability performance

-Innovative ammonia pressure gradient controlled polymerization method: Breaking through the bottleneck of low polymerization degree in traditional phosphate urea condensation method, precise mass production of polymerization degree n=1000 is achieved by accurately controlling the reaction temperature of 270-290 ℃, ammonia partial pressure and residence time. The crystallinity is as high as 98.5%, and the solubility in water at 20 ℃ is ≤ 0.4g/100mL, which improves water resistance by 300% compared to ordinary low polymerization degree APP (n<50).

-Ultimate weather resistance and migration resistance: After being placed in a humid and hot environment of 85 ℃/85% RH for 1800 hours, there is no moisture absorption or agglomeration, and no migration or precipitation. After soaking in cold and hot water for one week, the flame retardant performance deteriorates by ≤ 5%, making it perfect for long-term service scenarios such as outdoor building materials, new energy battery packs, and cable sheaths.

-Wide temperature range thermal stability adaptation: 1% thermal weight loss temperature ≥ 320 ℃, enters the high-efficiency decomposition stage at 400 ℃, and the processing temperature window covers 200-350 ℃. It can be matched with various high-temperature processes such as engineering plastic injection molding, high-end coating curing, rubber vulcanization, etc., without toxic gas release, and does not affect the quality of product molding.

2. Composite coating modification, with excellent compatibility and carbonization properties

-Innovative nano silane melamine double-layer coating technology: constructing an "inorganic silane reinforcement layer+organic melamine carbonization layer" on the surface of particles, improving compatibility with organic substrates by 95%, achieving micron level dispersion uniformity, and completely solving the defects of white spots and decreased mechanical properties caused by traditional APP aggregation.

-Catalytic dense expanded carbon layer: At high temperatures, the coating layer works synergistically with ammonium polyphosphate to catalyze rapid dehydration and carbonization of the substrate, forming a honeycomb shaped dense carbon layer with a thickness 15-25 times that of the original material. The thermal conductivity is ≤ 0.12W/(m · K), and the oxygen thermal barrier efficiency is increased by 70% compared to ordinary APP, effectively suppressing droplet phenomena.

-Controllable loss of mechanical properties: After addition, the tensile strength retention rate of PP material is ≥ 93%, and the impact strength retention rate of epoxy resin is ≥ 90%, without the need for additional dispersants, perfectly balancing flame retardant performance and product structural strength requirements.

3. Phosphorus nitrogen synergistic efficiency, low addition, environmental protection and safety

-Triple synergistic flame retardant mechanism: release of polyphosphoric acid (acid source) at high temperature to catalyze substrate carbonization; Release ammonia and water vapor (gas source) to dilute the concentration of combustible gases; The dense expanded carbon layer (carbon source) physically blocks oxygen heat transfer, while the decomposition products of melamine quench combustion free radicals, achieving a comprehensive protection of "condensed phase+gas phase".

-Low dosage to reduce costs and increase efficiency: Adding 15% to PP material can achieve 1.6mm UL 94 V-0 grade; Adding 12% to the expansion type fireproof coating can maintain the steel structure in an 800 ℃ flame for 1.5 hours without collapsing, reducing the amount added by 25% -30% compared to ordinary APP and significantly reducing production costs.

-Zero halogen, low smoke, low toxicity: completely free of harmful substances such as halogens, heavy metals, PFAS, etc. When burned, the smoke density (DS, 4 minutes) is ≤ 110, and the smoke toxicity reaches the highest safety level of EU EN 13501-1:2024. There is no release of dioxins or hydrogen halides, which is in line with the global trend of environmental protection and flame retardancy.

Application scenarios

Engineering plastics and electronic and electrical fields

-Applications: PP/PE electrical enclosures, PA nylon connectors, epoxy resin PCB substrates, insulation components for new energy battery packs

-Recommended formula: PP substrate 82%+ammonium polyphosphate (n=1000) 15%+pentaerythritol (carbon source) 2%+melamine (gas source) 1%

-Advantages: With a thickness of 1.6mm and UL 94 V-0 rating, the dielectric performance is stable (volume resistivity ≥ 10 ¹⁴Ω· cm), and the processing flowability is good. It has passed RoHS 2.0 and REACH full compliance, meeting the large-scale production needs of high-end electronic appliances.

Fireproof coatings and building materials field

-Application: Steel structure fireproof coating, wood flame retardant coating, flame retardant gypsum board, high-end plywood

-Recommended formula: acrylic lotion 62%+ammonium polyphosphate (n=1000) 12%+expanded graphite 7%+carbon forming auxiliary 9%+auxiliary 10%

-Advantages: The expanded carbon layer is dense and tough, with a fire resistance limit of over 1.5 hours, excellent resistance to moisture and heat aging, and meets the GB 8624-2012 B1 flame retardant standard. The coating has no odor, no yellowing, and strong adhesion.

Rubber and new energy field

-Application: EVA cable sheath, polyurethane foam, automobile rubber seal, new energy battery pack flame retardant gasket

-Recommended formula: EVA base material 76%+ammonium polyphosphate (n=1000) 19%+compatibilizer 3%+anti-aging agent 2%

-Advantages: Passed the IEC 60332-3 bundle flame retardant test, with a limit oxygen index (LOI) of ≥ 33% and an elastic recovery rate of ≥ 92%. Its weather resistance meets long-term outdoor use and is suitable for the demanding requirements of new energy and high-end cable fields.

Textile and other fields

-Application: Flame retardant cotton fabric, polyester fabric, wood flame retardant impregnation, dry powder fire extinguishing agent, water treatment agent

-Recommended formula: Textile flame retardant finishing solution: Ammonium polyphosphate (n=1000) 12%+urea 4%+environmentally friendly adhesive 7%+water 77% (diluted 500 times by immersion rolling)

-Advantages: Textile flame retardant time is less than 3 seconds, meeting the GB 50222-2017 flame retardant standard; Fire extinguishing agents have high fire extinguishing efficiency and no secondary pollution; In water treatment, it can be combined with calcium and magnesium ions to prevent scaling, and has strong adaptability to multiple scenarios.

If you are looking for ammonium polyphosphate n=1000, Taixing will be your best choice!