Melamine cyanurate (MCA) is a salt synthesized from melamine and cyanuric acid. It is a nitrogen series flame retardant and is available in powder and granular forms. , odorless, melting point is about 350℃. MCA has good dispersion and lubricity, and has little impact on the processing properties and physical and mechanical properties of the polymer.
Flame retardant principle:
Melamine cyanurate sublimes and absorbs heat to reduce the surface temperature of the polymer and eliminate air, which can accelerate the dissolution of droplets, thereby bringing It removes heat and combustibles, changes the thermal oxygen degradation process and causes rapid carbonization to form non-combustible carbonaceous materials. These carbonaceous materials expand and foam to cover the surface of the substrate, forming an insulating layer that blocks contact with the air and combustibles. The escape of the material can effectively prevent the material from continuing to burn. At the same time, the non-combustible gas produced by decomposition causes the material to expand and form an expansion layer, which can greatly reduce the thermal conductivity and facilitate the self-extinguishing of the material from the fire.
Usage:
Widely used in flame retardant of rubber, nylon, polyurethane, phenolic resin, epoxy resin, polyethylene resin, and acrylic.
As a halogen-free flame retardant suitable for nylon, melamine cyanurate is especially suitable for use in two pure nylons, nylon 6 and nylon 66, allowing them to easily achieve UL 94 V-0 level resistance. Burning effect; it has various advantages such as extremely low application, superior electrical properties, mechanical properties and coloring properties.
微信扫一扫打赏
