Correlation between the hot plate ignition test and other laboratory‐scale flammability tests on rubber conveyor belts with fabric skeletons

摘要

AbstractThe hot plate ignition test was conducted on ten different conveyor rubber belts with fabric skeletons. In this test, a 25 × 25 mm2belt sample was placed on a stainless steel plate in an electric furnace and heated. The ‘ignition temperature’ was determined on each sample in almost the same way as proposed in Canada. The test results were compared with those from other laboratory‐scale flammability tests (i.e. the small‐scale flame tests, the Oxygen Index test and the laboratory‐scale gallery test). The calculated results of both sample and rank correlation coefficients imply that the ‘10 signition temperature’ in this hot plate ignition test has a correlation with the results from both the Oxygen Index test and the laboratory‐scale gallery test, but that it has very little or no correlation with those from the small‐scale flame tests. On the other hand, it is found that the ‘60 s ignition temperature’ in this test has a far better correlation both with the results from the small‐scale flame tests and with the time to ignition in the laboratory‐scale gallery test than the