-
How is Ammonium Polyphosphate Produced?
When discussing halogen-free flame retardants, one term appears frequently—APP. But it’s not the mobile app; it refers to ammonium polyphosphate. As the “soul” of intumescent flame retardant systems, APP’s role goes far beyond simply providing phosphorus and nitrogen. Firs...Read more -
Why APP Become The “New Favorite” of Phosphorus-based Flame Retardants?
Ammonium Polyphosphate (APP) is not a single substance, but a large “family,” with performance differences primarily determined by two dimensions: degree of polymerization (n-value) and crystal structure. Classified by degree of polymerization: - Low-polymer APP (n=10~20): High water ...Read more -
How Does Ammonium Polyphosphate Flame Retardant Work?
The flame-retardant mechanism of APP can be divided into condensed-phase flame-retardant mechanism and gas-phase flame-retardant mechanism. Condensed-phase flame-retardant mechanism: APP decomposes upon heating into phosphoric acid derivatives such as polyphosphoric acid and metaphosphoric acid. ...Read more -
Industrial Application of Ammonium Polyphosphate
hosphorus based flame retardants have the characteristics of non toxicity, halogen-free, smoke suppression, good flame retardant effect, and environmental friendliness. Ammonium polyphosphate APP, as a common phosphorus based flame retardant, has received widespread attention from researchers. At...Read more -
PVC with Built-in Flame-retardant Properties!
I. In the field of plastic materials, PVC (polyvinyl chloride) has always been the “top student” in flame retardant performance. Unlike polyethylene, polypropylene and other highly flammable general-purpose plastics, PVC has unique natural flame-retardant and self-extinguishing proper...Read more -
How to Choose Halogen-free flame retardants?
Options for Halogen-free flame retardants I. Consider the Substrate When a customer requests flame retardancy, our first question is about the substrate on which flame retardancy will be achieved. There are many types of substrates, commonly including plastics, rubber, fibers, adhesive coatings,...Read more -
Yellow Phosphorus Price Volatility Puts Cost Pressure on Ammonium Polyphosphate Market
Wild swings in yellow phosphorus prices have triggered severe cost shocks across the ammonium polyphosphate (APP) industrial chain, squeezing profit margins of flame retardant and fertilizer manufacturers nationwide. As the core feedstock for thermal-process phosphoric acid and phosphorus pen...Read more -
Introduction and Application Prospects of Halogen-Free Flame Retardant Modification Technology for Polypropylene (PP) Materials
With increasingly stringent environmental regulations and heightened consumer safety awareness, halogen-free flame-retardant polypropylene technology has become an important choice for balancing material performance with safety and environmental protection. Traditional halogenated flame retardant...Read more -
Ammonium Polyphosphate: The Versatile Inorganic Polymer Reshaping Fire Safety and Agriculture Industries
What is Ammonium Polyphosphate(APP)? Ammonium polyphosphate (APP) is a high-performance, eco-friendly inorganic polymer widely adopted across industrial fire safety and agriculture sectors. Featuring excellent thermal stability, non-toxicity and halogen-free properties, this multi-functional chem...Read more -
Prices of Yellow Phosphorus Continue to Rise
Photo source: sunsirsRead more -
Ammonium Polyphosphate (APP): Solve REACH Restriction for Fire Retardant Coating Formulation
As EU REACH regulation and global environmental standards tighten, fire retardant coating manufacturers face critical compliance challenges. Restrictions on halogens, heavy metals and PBDEs render traditional formulations unmarketable, while flame retardant demand in industrial and public scenar...Read more -
New Flame Retardant Standard for Non-Metallic Materials
Mandatory National Standard for Electric Bicycles “Safety Technical Specification for Electric Bicycles” (GB 17761-2024), the revised version has been officially released and implemented as of September 1, 2025, replacing the previous standard (GB17761-2018). The new standard for the ...Read more
