FLAMMABILITY INDEX OF POLYMERS MEASURED BY MICRO-SCALE COMBUSTION CALORIMETER

摘要

The flammability of polymers is mainly evaluated through ignitability,flame spread and heat release.UL 94 test has been generally applied for rating the flammability of polymers by flaming and burning rate observation,but it does not provide fundamental quantitative data or results to scientifically evaluate their degree of flammability.A relatively new quantitative and commercially available test technique-Micro-scale Combustion Calorimeter (MCC) instrument was applied to study the flammability behavior of some polymers-polyvinylchloride (PVC),fluoro-polymers and hydrocarbon polymers.The Flammability Index (Findex) was proposed to approximately define and determine the degree of flammability characteristics,and the Findex results were successfully quantified and consistent with the flammability performance of the studied polymers.Further,the MCC results can offer much more scientific understanding on their flammability behavior.