Due to the outstanding product performance of the PC endurance board, the application field has become more and more extensive, and the various performance standards of the PC endurance board are not the same in different fields. Today, Zhuoni Xiaobian leads you to talk about some problems of the flame retardant level of one of the performance of the PC endurance board; I believe that there are many users in the purchase of PC endurance board, I do not know how to judge and distinguish the flame retardant level of PC endurance board. PC series of plate flame retardant grades are substances or materials, after processing has obvious characteristics to prevent the spread of flame, and thus divided into grades.
The commonly used PC endurance board and PC sunshine board belong to polycarbonate engineering plastic board, and the flame retardant grade of plastic is gradually increasing from HB, V-2, V-1 to V-0.
1. HB: The lowest flame retardant grade in UL94 standard. For samples 3 to 13 mm thick, the combustion rate is less than 40 mm per minute; Samples less than 3 mm thick, burning speed less than 70 mm per minute; Or extinguish in front of the 100 mm sign.
2, V-2: After two 10-second combustion tests on the sample, the flame is extinguished within 60 seconds. There's gonna be some stuff falling, and it's not gonna help the fire spread.
3, V-1: After two 10-second combustion tests on the sample, the flame is extinguished within 60 seconds. Nothing will fall, nothing will spread the fire.
4, V-0: After two 10-second combustion tests on the sample, the flame is extinguished within 30 seconds. No combustion will fall, and it will be extinguished naturally when it leaves the fire.
A large number of experimental tests have proved that: PC sunshine board, PC endurance board, PC wave board, can be extinguished naturally within 30-60 seconds after the flame is removed from the fire. The combustion material will not not fall, has reached the plastic UL94 standard flame retardant V-0 level, users with high fire protection requirements can be assured of procurement.