The application of halogen-free flame retardants in nylon materials mainly lies in improving flame retardant performance, meeting environmental protection requirements, maintaining the mechanical properties of materials, and expanding application fields, etc. The following is a specific analysis:
First, application function
Provide flame retardant performance: The main function of halogen-free flame retardants is to provide effective flame retardant performance in nylon materials, slow down the spread of flames, and prevent the spread of fire. Flame retardants can inhibit the combustion process, reduce the release of smoke and toxic gases, lower the risk of fire, and enhance the safety of people and property.
Improving fire resistance: Halogen-free flame retardants can cause nylon materials to melt or form complex compounds that are difficult to burn during combustion, thereby reducing fire losses.
Provide thermal stability: Halogen-free flame retardants can also provide thermal stability, enabling nylon materials to maintain structural integrity and performance stability at high temperatures.
Meeting environmental protection requirements: Halogen-free flame retardants do not contain halogen compounds, causing less pollution to the environment and meeting environmental protection standards and regulations.
Second, main components
Phosphate flame retardants: such as triphenyl phosphate (TPP), triaminobenyl phosphate (TPA), tris (dimethoxycarbonyl ethoxy) propyl phosphate (BAPP), etc.
Carbonate flame retardants: such as anhydrous magnesium carbonate (MgCO₃), etc.
Silicate flame retardants: such as aluminium hydroxide (Al(OH)₃), etc.
Nitrogen-based flame retardants: such as melamine cyanurate (MCA), melamide (melamine), melamine polyphosphate (MPP), etc.
Polyol flame retardants: such as epoxylated castor oil (ELO), etc.
Third, application effect
Excellent flame retardant performance: The flame retardant level of halogen-free flame-retardant nylon products can reach UL94V0 grade, featuring low precipitation and anti-dripping. For example, when a certain proportion of APP/talc is added to PA6, PA6 with UL94 V-0 flame retardant grade can be obtained.
It has a relatively small impact on the mechanical properties of materials: When red phosphorus is used as a flame retardant, the addition amount is lower than that of other flame retardants to achieve the same flame retardant grade, which can enable nylon to better maintain its own mechanical properties. However, the addition of alkyl aluminum hypophosphonate has some effects on the mechanical properties of the material, such as an increase in flexural strength and flexural modulus, while a decrease in tensile strength and impact energy, but the impact is not significant.
Wide application fields:
Automotive components: such as ignition system components, electric vehicle battery assemblies, etc.
Photovoltaic products: such as junction boxes and plugs for solar photovoltaic cell modules, etc.
Electronic products: such as plugs, electrical and mechanical components of EDP devices and communication equipment, capacitor casings, chip carriers, etc.
Electrical engineering: such as low-voltage switches and enclosures, series connection terminals, power distribution systems, cable ducts and fasteners, contacts and power switches, coils, circuit breakers, etc.
Household appliances: such as washing machines, dishwashers, coffee machines, electric kettles, hair dryers, warm air fans and other electrical components, such as switches, solenoid valves, plugs, sockets, brackets, etc.
