Test method limiting oxygen index

Flame retardance is another important property and is defined by different test methods. Some of the small-scale methods include horizontal flame spread (FMVSS 302, ASTM D-1692) vertical flammability (ASTM D-3014, so-called Butler Chimney Test), limiting oxygen index (ASTM D-2863), and smoke density (ASTM D-2840). 

Of the several test methods for evaluating the burning behavior of different polymers, the limiting oxygen index (LOI) will be used here to illustrate the relative flammability of materials. This test measures the minimum concentration of oxygen in an oxygen-nitrogen atmosphere that is necessary to initiate and support a flame. 

In this section, flammability of the electrolyte is discussed. The flammability is determined by using several methods, i.e., burning test with UL94HB method, flash point test with ASTM D56 and ASTM D93 method, and limiting oxygen index test with JIS K 7,201 method. These test procedures sometimes are arranged with these requirements. 

Trade name Companies Modification method Fire retardant agents Tenacity (cN/dtex) Elongation (%) Melting tempe- rature (°C) Density (g/cm ) Limiting oxygen index (%) Ames test... 

Measurements of Limiting Oxygen Index, a candle-type burning test in atmospheres of varying oxygen content, is another test which has proved useful in formulation development. Description of other test methods have been summarized by Troitzsch [1]. 

Flame retardancy effectiveness and the comparison of the exposure to catch fire of the PE-HD/MDH composites were rated in terms of accuracy and repeatability by the test method for measuring the limiting oxygen index (LOI) according to PN-EN ISO 4589-2 2006. 

The Limiting Oxygen Index Test. The LOI test is a typical example of a method that is used to control the production of materials, products, and assemblies and in research to develop new products. This test is standardized in North America as ASTM D2863, Standard Test Method for Measuring the Minimum... 

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