Oxygen index and burning level can correspond relationship?
Flame retardant polymer materials, such as oxygen index more than how much, the material level of combustion can achieve UL94V - 0
May is not the same as the corresponding relationship between different plastic, master tell me about the polypropylene is good!
Answer:
There is no one-to-one relationship!
The most typical is ABS flame retardant, its oxygen index can be up to 50, but V 0 cannot achieve, do not even even less than V - 2, you can see a lot of literature on the subject, they only write oxygen index, heat release rate, TG and other changes, vertical combustion are written.
The net friend answer 2:
The oxygen index, the greater the effect of flame retardant, the better, more than 26 V - 0, oxygen index is difficult for material flammability testing, namely the oxygen index reached 30, refers to the material in an oxygen volume content under 30% flame retardant/non-combustible;
Horizontal/vertical burning test for material in burns are dripping, dripping content whether other materials testing. Is there no necessary relation between the two. Suggest to consult the corresponding testing standards