High Polymerization Ammonium Polyphosphat

High degree of polymerization ammonium polyphosphate represents the strategic balance we have achieved between thermal stability, durability, and processing applicability through precise control of molecular chain length. The High polymerization ammonium polyphosphate produced by Taixing innovatively adopts the core technology of supercritical fluid polymerization and graphene composite coating, and constructs a triple strengthening system of "dense carbonization barrier phosphorus nitrogen synergistic flame suppression weather resistant locking protection". With only 10% -22% addition, the material can achieve UL 94 V-0 flame retardant level, completely solving the industry problems of "performance degradation, poor compatibility, and limited processing" of traditional APPs, and providing a flame retardant solution that combines ultimate performance and compliance protection for high-end manufacturing industries worldwide.

Core strengths

1. Optimized long-term thermal stability

·Stable decomposition threshold: Its thermal decomposition initiation temperature is usually above 280 ° C, which provides a wide and safe thermal window for the processing of polypropylene (PP), polyethylene (PE), ethylene vinyl acetate (EVA), and some engineering plastics, effectively preventing foaming, discoloration, or performance degradation caused by early decomposition during processing.

·Stable processing performance: In screw extruders or internal mixers, good chemical stability can be maintained, reducing the risk of corrosion caused by ammonia gas decomposition and ensuring the density and uniformity of the internal structure of the product.

2. Significantly improved environmental resistance performance

·Excellent moisture resistance and migration resistance: Compared to low polymerization APP, its longer molecular chains and compact crystal structure significantly reduce surface energy and hydration tendency. This slows down its moisture absorption rate in humid environments and significantly reduces its tendency to migrate and precipitate (frost) in the polymer matrix, ensuring the long-term consistency of the product's appearance and the durability of its flame retardant properties.

·Reliable hydrolysis resistance: The water solubility is effectively controlled at a low level (usually<1.5 g/100mL). Although not designed for extreme immersion environments, this is sufficient to handle atmospheric humidity, condensation, and short-term humid contact, ensuring that products used outdoors or in humid environments (such as outdoor cables and building templates) have reliable lifecycle performance.

3. Efficient flame retardant synergy

·Ideal acid source reaction kinetics: Its degree of polymerization enables it to provide a moderate and sustained source of polyphosphate during thermal decomposition. This release rate is well matched with the decomposition rate of many common polymer matrices and the reaction rate of carbon sources (such as pentaerythritol) in expansion systems, which is conducive to the formation of a continuous, dense, and sufficiently strong expanded carbon layer.

·Good formula adaptability: It can effectively synergize with various gas sources such as melamine, melamine cyanurate (MCA), and various carbon sources, making it the core and ideal choice for constructing classic and efficient phosphorus nitrogen expansion flame retardant (IFR) systems.

Application scenarios

High end engineering plastics field

-Application: PP/PE high-end electrical casing, PA6/PA66 electronic connectors, aerospace lightweight components, new energy battery pack structural components

-Recommended formula: PP substrate 85%+high polymerized ammonium polyphosphate 12%+pentaerythritol (carbon source) 2%+melamine (gas source) 1%

-Advantages: The product has a thickness of 1.6mm and meets UL 94 V-0 standards. It has stable dielectric properties (volume resistivity ≥ 10 ¹⁵Ω· cm) and excellent processing fluidity. It has passed high and low temperature cycling tests for aerospace materials, meeting the stringent requirements of high-end manufacturing.

Special fireproof coating field

-Application: Special fireproof coatings for steel structures, tunnel fireproof coatings, aircraft carrier deck fireproof coatings, high-end building curtain wall fireproof coatings

-Recommended formula: acrylic lotion 65%+highly polymerized ammonium polyphosphate 10%+expanded graphite 6%+carbon forming auxiliary 9%+auxiliary 10%

-Advantages: The coating has a fire expansion rate of ≥ 30 times, a fire resistance limit of over 2.0 hours, and is resistant to water immersion for 168 hours without bulging or peeling. It meets the GB 14907-2018 special fireproof coating standard and is suitable for core scenarios such as national defense and high-end construction.

In the field of new energy and elastomers

-Applications: EVA photovoltaic module backplate, polyurethane power battery insulation cotton, TPE automotive seals, high-end cable sheaths

-Recommended formula: EVA base material 78%+highly polymerized ammonium polyphosphate 17%+compatibilizer 4%+anti-aging agent 1%

-Advantages: Passed the IEC 60332-3 bundle flame retardant test, with a limit oxygen index (LOI) of ≥ 35%, excellent UV aging resistance, and no attenuation of flame retardant performance during the 25 year service life of photovoltaic modules.

Aerospace and high-end building materials field

-Application: Aerospace composite materials, flame-retardant aluminum-plastic panels, high-end fire-resistant door and window profiles, rail transit interior parts

-Recommended formula: 70% epoxy resin substrate+18% high polymerized ammonium polyphosphate+10% curing agent+2% graphene additive

-Advantages: The vertical combustion grade of composite materials reaches UL 94 V-0 level, with a tensile strength retention rate of ≥ 95%, meeting the dual requirements of lightweight and high flame retardancy for aerospace materials, while also complying with the safety standards of low smoke and non-toxic rail transit.

If you are looking for high polymerization ammonium polyphosphate and ultra-high polymerization degree APP, Taixing will be your best choice!