Polyimide Film has excellent flame retardant properties and is an ideal flame retardant material. Under combustion conditions, Polyimide Film exhibits excellent thermal and chemical stability, allowing it to maintain structural integrity under high temperatures and flames and effectively prevent the spread of fire.
First of all, Polyimide Film is not easy to burn in the air and is self-extinguishing. Even when it comes into contact with a fire source, it can quickly extinguish the flame and avoid further expansion of the fire. This self-extinguishing property makes Polyimide Film have broad application prospects in electrical insulation, aerospace and other fields, because these fields require extremely high flame retardant properties of materials.
Secondly, Polyimide Film has a very low smoke rate. During the burning process, it produces less smoke, which helps reduce the smoke concentration at the fire scene and improves the efficiency of evacuation and rescue. At the same time, the low smoke rate also means that Polyimide Film releases less harmful gases when burned and is less harmful to the environment and human body.
In addition, the carbon residue rate of Polyimide Film is very high, usually above 50%. This means that during the combustion process, it can form a strong char layer, effectively isolating flames and oxygen, thereby preventing the fire from spreading further. This high carbon residual rate is also an important manifestation of the superior flame retardant performance of Polyimide Film.
The flame retardant performance of Polyimide Film has also been recognized by multiple flame retardant grade standards. For example, it is able to achieve the highest flame retardant rating of UL 94 V-0, which is the highest recognition of the material's flame retardant performance. In the flame test, the burning time and the number of dripping sparks of Polyimide Film were far below the standard limit, showing its excellent flame retardant properties.
To sum up, Polyimide Film has excellent flame retardant properties and can maintain the integrity and stability of the structure in various harsh environments and effectively prevent the spread of fire. This material has broad application prospects in electrical insulation, aerospace, construction and other fields, and is of great significance for improving the safety and reliability of these fields.
