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PC plastic flame retardant rating
1. Basic flame retardant performance The flame retardant rating of PC plastic itself is only UL-94V-2, and the oxygen index (LOI) is about 20%. It is easy to burn under high temperatures or open flames, making it difficult to cope with high-frequency flame retardant needs scenarios such as wires and electronic casings.
2. Regarding the fire protection performance of PC materials, my country has clear national standards to regulate it. According to the UL94 standard, the flame retardant rating of PC plastics is divided into four levels: HB, V-V-1 and V-0.
3. Flame retardancy: You can meet the UL94V-0 standard without adding flame retardant (extinguish immediately after leaving the fire, no dripping).
4. PC materials have both natural flame retardancy and can also be improved through modification. Therefore, there are differences between "basic flame retardancy" and "high flame retardancy", but strictly speaking, there is no PC that is not flame retardant at all. The specific analysis is as follows: PC pure raw materials have basic flame retardancy: PC pure raw materials without any flame retardant added, according to the UL94 standard (a common measure of flame retardancy of plastics), their 5mm thick samples can reach the V2 flame retardancy rating.
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