Oxygen index apparatus

Oxygen Index and Temperature Index. A Stanton-Rederoft FTA/HFTA Oxygen Index apparatus was used. Experiments were performed using the ASTM D 2 863-77 procedures with temperature variations between ambient and 300°C. 

Fig. 3.41 Schematic pattern of the oxygen index apparatus 1 heat-resistant glass tube 2 gas stream distributor 3 wire gauze 4 specimen 5 control valve and gauge for gas stream 6 gas burner ...

The specimen holder of an oxygen index apparatus can be coupled to a balance beam for continuous monitoring of the mass loss of the specimen during the combustion. Such an apparatus was used by Methven for studying polyester resins filled with alumina trihydrate and polyester fabrics finished with flame retardants. 

Techniques have been developed for the quantification of fire propagation using FMRC s Small-Scale Flammability Apparatus (A,6) and the National Institute of Standards and Technology (NIST) Flame Spread Apparatus (j J ). In this study, the FMRC technique was used. Oxygen Index and its dependency on temperature was used by AMTL to examine the fire propagation behavior of small samples of FRC materials (J 2). 

The authors wish to thank the following individuals for performing the experiments Mr. David A. Bulpett of AMTL (PY-GC-MS experiments), Ms. Claudette LeCroy of AMTL (Oxygen Index experiments) and Mr. Stephen D. Ogden of FMRC (experiments in the FMRC s Small-Scale Flammability Apparatus). 

Matthews, R. D. and Sawyer, R. F. Limiting oxygen index measurement and interpretation in an opposed flow diffusion flame apparatus. J. Fire and Flammability, 7, 238 (1976)... 

Three test apparatuses and methods have been developed to determine the fire properties associated with flame propagation (1) the ASTM D 2863 oxygen index test method for downward flame propagation for small samples [14] (2) the ASTM E 1321-90 lateral ignition and flame spread (LIFT) test method for horizontal and lateral flame propagation... 

Among the most common methods to measure thermal and oxidative behavior of oils are the classical oxidative stability analysis used by industries, based on the active oxygen method (AOM), which determines the number of hours required for the oil to reach a peroxide value of 100 meq/kg O and the oxidative stability index (OSI), which can be considered as automated AOM with an apparatus that simulates the events under specific atmospheres, usually with the use of high temperatures. The OSI method measures the changes in water conductivity when the oxidation compounds are formed [17]. 

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