Melamine cyanurate (MCA) is synthesized from melamine and cyanuric acid. It belongs to the nitrogen series of flame retardants and is available in both powder and granular forms. And it is odorless and has a melting point of approximately 350°C. MCA has good dispersibility, lubricity, low impact on the processing properties and physical and mechanical properties of the polymer.
Melamine cyanurate flame retardant principle:
Melamine cyanurate sublimates and absorbs heat to reduce the surface temperature of the polymer and eliminate air, which can accelerate the dissolution of droplets, thus taking away heat and combustible materials, changing the course of thermal oxygen degradation so that it is quickly carbonized to form non-combustible carbon. These carbon substances are covered on the surface of the substrate due to expansion and foaming, forming an insulating layer, isolating the contact with air and the escape of combustible materials, thus effectively preventing the material from continuing to burn. At the same time, the inert gas produced by decomposition expands the material to form an intumescent layer, which greatly reduces thermal conductivity and facilitates self-extinguishing of the material from the fire.
Melamine cyanurate uses:
Widely used in the flame retardant of rubber, nylon, polyurethane, phenolic resin, epoxy resin, polyethylene resin and acrylic.
Melamine Cyanurate, as a key flame retardant, is designed to be added into Polyamide 6 and Polyamide 66 to achieve UL94 V-0 flame resistant performance with excellent mechanical and electrical properties. It offers various advantages such as superior electrical properties, excellent mechanical properties and colouring properties.
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