Flame retardant PP (flame retardant polypropylene) is a polymer material with self-extinguishing properties, which can reduce the spread of fire and the harmful substances produced during combustion.
Among flame retardant PP, V0 and V2 are common flame retardant grades. This representation is used to evaluate the flame retardant properties of a material. These classes are defined according to the standards IEC 60695-11-10 and IEC 60695-11-20 published by the International Electrotechnical Commission (IEC). A V0 rating indicates that the material has high flame retardant properties, while a V2 rating indicates that the material has certain flame retardant properties.
V0 level means that after two 10-second combustion tests on the sample, the flame is extinguished within 30 seconds, and no combustibles can fall; V2 flame retardant PP In the vertical combustion test, after two 10-second combustion tests on the sample, the flame is extinguished within 60 seconds, and there can be combustible materials falling. There are clear differences between them in terms of flame retardant properties, combustion time, smoke density, and toxic gas emissions.
There is a significant difference between V0 and V2 grades of flame retardant PP in terms of flame retardant properties. V0 grade flame retardant PP has excellent flame retardant properties, which means that the flame is extinguished within 30 seconds after two 10-second combustion tests of the sample, and no combustibles can fall. This grade of flame retardant PP can prevent the spread of flames and reduce the occurrence of fire accidents in fires. In contrast, the flame of V2 grade flame retardant PP can be extinguished within 60 seconds in the vertical combustion test, but combustibles can fall. This means that the flame retardant properties of V2 grade PP are relatively weak and cannot prevent the flame from spreading.
There is also a difference in the combustion time of flame-retardant PP in V0 and V2 grades. V0 grade flame retardant PP takes longer to burn during the combustion process. This means that in a fire, V0 rated flame retardant PP can stop the flame from spreading for a longer time, thus reducing the occurrence of fire accidents. In contrast, the flame retardant PP of V2 grade has a shorter burning time and may not be able to prevent the spread of flames well in a fire.
There are also differences between V0 and V2 grades of flame-retardant PP in terms of smoke density and toxic gas emissions. V0 grade flame retardant PP produces a lower density of smoke during combustion and less toxic gas release. This means that the use of V0 rated flame retardant PP can reduce the release of smoke and toxic gases in fires, thereby reducing the harm to the environment and human body. In contrast, V2 grade flame retardant PP is relatively poor in this regard, producing a higher smoke density and more toxic gas emissions.
In summary, there are obvious differences between the V0 and V2 grades of flame retardant PP in terms of flame retardant performance, combustion time, smoke density and toxic gas release. In order to ensure reliable performance, it is recommended to choose flame retardant PP according to the specific application scenario and reliability requirements. Especially in places with high requirements for reliable performance, such as subways, tunnels, high-rise buildings, etc., V0 grade flame retardant PP should be preferred.