1. Introduction to PC flame retardants
PC flame retardant is a type of additive added to polycarbonate (PC) materials to enhance their flame retardant properties.
PC, as an important engineering plastic, has advantages such as high strength, high transparency, high impact resistance, and heat resistance. It is widely used in fields such as electronics, lighting, building materials, automotive components, food packaging, and medical equipment.
However, the Limiting Oxygen Index (LOI) of PC is generally between 21% and 24%, and the material itself can only achieve V-2 flame retardancy. In some situations where high flame retardancy is required, such as electronic devices, automotive interiors, building fires, etc., its flame retardancy cannot meet the requirements, so flame retardants need to be added to improve its flame retardancy level.
2. Mechanism of action:
Heat absorption effect: Flame retardants undergo strong heat absorption reactions at high temperatures, absorbing some of the heat released by PC combustion, reducing the surface temperature of combustibles, effectively suppressing the generation of combustible gases, and preventing the spread of combustion
Delay.
Covering function: form a glassy or stable foam covering layer under high temperature to isolate oxygen, which has the functions of heat insulation, oxygen isolation and preventing combustible gas from escaping outward.
Inhibition chain reaction: acts on the gas-phase combustion zone, captures free radicals in the combustion reaction, prevents flame propagation, reduces flame density in the combustion zone, and slows down the combustion reaction rate until it terminates.
Non combustible gas suffocation effect: When heated, non combustible gases are decomposed, diluting the concentration of combustible gases decomposed from combustibles to below the lower limit of combustion, while diluting the oxygen concentration in the combustion zone to prevent combustion from continuing.
3. Application areas:
In the field of electronic appliances: used to produce casings and components for various electronic products, such as computers, mobile phones, televisions, etc., which can prevent fires caused by malfunctions during the use of appliances.
In the automotive field, it is applied to the interior parts and components of automobiles, such as instrument panels, seats, bumpers, etc., to improve the safety of automobiles.
In the field of architecture, it can be used to make building materials such as PC panels, PC polycarbonate sheets, etc., which have good fire resistance and can be used for the exterior walls, roofs, and other parts of buildings.
In the field of medical equipment, it is used to manufacture surgical instruments, disinfectors, and components to ensure the safety of medical equipment during use.
Conclusion: Shijiazhuang Qibo Technology Co., Ltd. is a manufacturer with 18 years of flame retardant experience. We have a super transparent PC flame retardant with an addition amount of 0.3% to 0.4%, and it has passed the UL94 vertical combustion V0 level test.