Shanghai Daoqin Plastics Co., Ltd.

plastics flame retardant rating 由HB, V-2, V-1 toward V-0逐 grade increase:

HB: UL 94 and CSA C22.2 No 0.17 standards in most flame retardant rating. requirements for/regarding 3 to 13 mm thick sample, speed degree small 于40 mm separation 钟; small 于3 mm thick sample, speed degree small 于70 mm separation 钟; or in 100 mm front 熄灭. HB也 is belongs to flame retardant grade 别;

V-2: for sample 进行两次10秒 燃烧 testing rear, in 60秒 inner 熄灭. can has material lower.;

V-1: for sample 进行两次10秒 燃烧 testing rear, in 60秒 inner 熄灭. can has material lower. V-1 貌似 comparison less;

V-0: for sample 进行两次10秒 燃烧 testing rear, in 30秒 inner 熄灭. can has material lower. generally electrical appliances product need this type of requirements;