Flame Retardant Ammonium Polyphosphate APP(n=200)

Flame retardant ammonium polyphosphate APP (n=200) is an inorganic flame retardant mainly composed of phosphorus and nitrogen, with a chemical formula of(NH₄)ₙ₊₂PₙO₃ₙ₊₁（n=200）, belonging to high degree of polymerization and insoluble ammonium polyphosphate. Its appearance is a white fine powder, non-toxic, odorless, non corrosive, with high thermal stability (decomposition temperature>300 ℃), low moisture absorption, and significant flame retardant efficiency. Flame retardant ammonium polyphosphate APP(n=200) has high purity of P and N elements,Flame retardant ammonium polyphosphate APP(n=200) has good thermal stability, almost neutral, non-toxic and low smoke. Flame retardant ammonium polyphosphate APP(n=200) has low water solubility, low processing viscosity with high flame retardancy.

Physical and Chemical Properties

Product Features:

Advantages of high polymerization degree: The polymerization degree of n=200 enables it to form a stable long-chain structure. Compared with low polymerization degree products, it has lower water solubility (almost insoluble in water), stronger migration resistance, and is not easily precipitated after being uniformly dispersed in the material, which can maintain the stability of flame retardant performance for a long time.

Efficient flame retardant mechanism: releases ammonia gas during thermal decomposition, dilutes oxygen concentration, and inhibits combustion reactions; Simultaneously generating phosphoric acid substances, rapidly forming a dense carbon layer on the surface of the material, blocking heat and oxygen conduction, achieving dual protection of "gas-phase flame retardant+condensed phase flame retardant".

Key Advantage

●Good thermal stability.

●Low viscosity, good dispersion.

●Low water solubility, good resistance to precipitation and migration.

●High degree of polymerization (n≥1000).

●High purity, narrow particle size distribution range.

Application areas:

1. Flame retardant polymer materials

Plastic industry: suitable for general plastics such as polypropylene (PP), polyethylene (PE), polystyrene (PS), as well as engineering plastics such as nylon (PA) and polyester (PET). Adding 8% -15% can make the material pass the UL94 V0 flame retardant standard (thickness ≤ 3mm) while maintaining its mechanical properties such as tensile strength and impact strength.

Rubber products: used for styrene butadiene rubber (SBR), ethylene propylene diene monomer rubber (EPDM), etc., can be used to prepare flame retardant sealing strips, cable sheaths and other products, improve the flame retardant level and high temperature resistance of rubber, suitable for automotive, construction and other fields.

2. Coatings and Building Materials

Fireproof coating: As the core component of expansion type fireproof coating, it is compounded with carbonization agent and gas source agent to form an expanded carbon layer when exposed to fire, effectively delaying the combustion of the substrate. It is widely used in steel structures, tunnels, ships and other scenarios.

Thermal insulation materials: added to polyurethane (PU) and polystyrene (EPS) insulation boards to solve the flammability problem of traditional insulation materials, meet the requirements of building exterior wall fire protection regulations, and reduce the risk of high-rise building fires.

3. Electronic and industrial fields

Electronic appliances: used for power adapter housings, circuit board packaging materials, etc., to prevent fires caused by circuit short circuits, and meet the strict requirements of the electronics industry for low smoke and low toxicity flame retardants.

Industrial textiles: endowing fabrics with flame retardant properties through immersion rolling technology, suitable for firefighting suits, industrial protective gloves, etc., to ensure the safety of workers.

Packing and store:packing: 25kg/bag compound paper & plastic bag, or jumbo bag.

Store: storing in dry, ventilated and moistureproof conditions.

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