The instrument has a reasonable structure design and is convenient for operation, use and maintenance. The test system uses a well-known oxygen sensor and displays the result digitally, which has the advantages of accurate judgment and good reproducibility. It can not only be used as a means to identify the flammability of polymers, but also provide a powerful test tool for the laboratory to study flame retardant formulations and develop flame retardant materials. It is suitable for testings of solid materials, laminates, foams, plastics, fabrics, films, etc.
According to the type of material being tested, there are usually 6 different sample specifications. It is recommended to use specimens of 80 to 120mm long, 10mm wide and 4mm thick for injection molding materials. Only when the specifications of the test specimens are the same, the test results between different materials can be compared with each other. The test method is simple: Fix the sample vertically in a glass combustion tube, and its base is connected to a device that can generate a nitrogen-oxygen mixed gas flow. Ignite the top of the sample, and the oxygen concentration in the mixed gas flow will continue to decrease until the flame goes out.