Industry News

The efficacy and lifespan of the expansion type fireproof coating applied here are highly dependent on the inherent stability of the core flame retardant - ammonium polyphosphate (APP). This article will delve into why the aggregation degree (N value) of an APP must be greater than 1000 in extremely harsh marine environments.

In the technology path of halogen-free flame retardant of polypropylene (PP), ammonium polyphosphate based expansive flame retardant system (APP-IFR) and aluminum hypophosphite (AHP) based synergistic flame retardant system are two mainstream and highly efficient solutions with different mechanisms.

The root cause often directly points to the core component of the system—ammonium polyphosphate (APP). Due to its inherent hydrophilicity and hydrolysis tendency, traditional APP has become the "weak link" in the water resistance of coatings.

Against the backdrop of rapidly increasing demand for engineering construction in humid regions around the world, water resistance is no longer a bonus, but a necessary threshold for fire-resistant coatings and flame retardants to enter the high-end market.

For material companies and terminal product manufacturers, choosing a professional customized water-resistant expansion flame retardant system can significantly improve the long-term reliability and safety level of products in high growth global markets such as new energy, outdoor infrastructure, automobiles, and communication electronics, reduce failure risks, and strengthen brand international competitiveness.

The flame retardant effect of nano magnesium hydroxide in PEEK/PPS is far from simple "endothermic dehydration", but rather constructs a multi-level "four phase synergistic barrier" system: