In the production and application of plastic materials, flame retardancy is a crucial indicator. Especially in areas with extremely high safety requirements, such as wires and cables, automotive interiors, building materials, etc., the level of flame retardancy is directly related to the safety of product use. Today, let's discuss in detail the flame retardancy level of TPE (thermoplastic elastomer) materials and related knowledge.

We should make it clear that the flame retardant level of TPE materials is not static. The flame retardant level of TPE without flame retardant is usually UL94-HB. This is the lowest flame retardant level in the UL94 standard, requiring that for samples 3 to 13 mm thick, the burning speed is less than 40 mm per minute; for samples less than 3 mm thick, the burning speed is less than 70 mm per minute; or it is extinguished before the 100 mm mark. This flame retardant level of TPE material can already meet basic flame retardant requirements in general applications.

However, in some areas that require higher flame retardancy, we need to add flame retardants to improve the flame retardancy level of TPE. According to the different flame retardancy, the flame retardancy level of TPE materials can be divided into three levels: V-2, V-1 and V-0, and their flame retardancy increases in sequence.

For V-2 grade TPE materials, after two 10-second burning tests, the flame must be extinguished within 60 seconds. During this process, burning objects can fall off. This flame retardant grade TPE material is usually used in some occasions that have certain requirements for flame retardant properties, such as the insulation layer of ordinary wires and cables.

For V-1 grade TPE materials, under the same test conditions, the flame must also be extinguished within 60 seconds. However, unlike V-2 grade, V-1 grade TPE materials cannot have burning materials falling off during the combustion process. This flame retardant grade TPE material is usually used in occasions that require higher flame retardant properties, such as automotive interior materials, construction plastic materials, etc.

V-0 grade TPE material is the TPE material with the highest flame retardancy at present. After two 10-second burning tests, the flame must be extinguished within 30 seconds, and no burning materials can fall. This flame retardant grade TPE material is usually used in occasions with extremely high requirements for flame retardancy, such as nuclear power plants, aerospace and other fields.

Understanding the flame retardant level of TPE materials and related knowledge not only helps us choose the right TPE materials, but also ensures the safety of product use. Of course, in actual applications, we also need to choose the right flame retardant level of TPE materials according to the specific use environment and requirements.

In addition to flame retardant grade, TPE material also has many other excellent properties, such as aging resistance, wear resistance, impact resistance, etc. These properties make TPE material have a wide range of application prospects in various fields.

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