Flame retardant nylon

Polyamide, commonly known as nylon (PA), is a general term for thermoplastic resins that contain repeating amide groups (- NHCO -) on the main molecular chain. Nylon is widely used in various fields due to its excellent mechanical properties, electrical properties, heat resistance, toughness, oil resistance, wear resistance, self-lubrication, chemical resistance, and other excellent properties.
Unmodified nylon has poor flame retardancy, and its vertical combustion can only reach UL94 V-2 level, with an oxygen index of around 24. It also produces droplets during combustion, making it a flammable material that is highly susceptible to fire during use. Especially in the field of electronic products, there are countless fires caused by nylon, resulting in significant losses. Therefore, the flame retardant modification of nylon has become a common concern and research topic in the academic and industrial communities today.
The widely used halogen-free flame retardants in nylon are red phosphorus and melamine salts. Red phosphorus has high flame retardant efficiency and can improve the arc resistance of products, but its storage and color limitations greatly limit its application in nylon, generally only used in nylon 6. Another halogen-free flame retardant used in nylon is melamine salt, mainly melamine urate and phosphate. They have good flame retardant efficiency, but their thermal stability is poor, and due to their tendency to absorb moisture, their electrical performance is poor in humid environments.
Halogen-free flame retardant for nylon: melamine urate is mainly MC
MC is a white crystalline powder with an oily texture, which is a nitrogen free halogen-free flame retardant with excellent performance and also an excellent lubricant for plastics. Compared with halogen-containing flame retardants, MC flame retardants have advantages such as low toxicity, high flame retardancy efficiency, strong applicability, and low price, and can be widely used for flame retardancy of polyamide and its rubber products. MC is particularly suitable for the use of pure nylon 6 and 66, which can easily achieve UL 94 V-0 flame retardant effect. It is the most economical, practical, and environmentally friendly flame retardant choice for PA nylon