What is the Limiting Oxygen Index (LOI) of PVC?(a) 45 or more(b) 20 or more(c) 45 or less(d) 20 or lessThe question was posed to me in class test.My question is taken from PVC topic in section Materials for Construction of Basic Civil Engineering

What is the Limiting Oxygen Index (LOI) of PVC?(a) 45 or more(b) 20 or

1.	What is the Limiting Oxygen Index (LOI) of PVC?(a) 45 or more(b) 20 or more(c) 45 or less(d) 20 or lessThe question was posed to me in class test.My question is taken from PVC topic in section Materials for Construction of Basic Civil Engineering
Answer» Correct answer is (a) 45 or more Best explanation: LIMITING Oxygen Index is a minimum CONCENTRATION of oxygen that will support COMBUSTION of a polymer. It is expressed as a percentage.PVC has good flame retardancy.Air has 20% oxygen, PVC has LOI of 45% or more.

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What is the Limiting Oxygen Index (LOI) of PVC?(a) 45 or more(b) 20 or more(c) 45 or less(d) 20 or lessThe question was posed to me in class test.My question is taken from PVC topic in section Materials for Construction of Basic Civil Engineering

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