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ISO 4589-2:Oxygen Index Test to Plastics Materils
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ISO 4589-2 |
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ISO 4589-2:Oxygen Index Test to Plastics Materils
Ecosafene Products Service Co.,Ltd have rich experience to provide ISO 4589-2: Oxygen Index Test to Plastics Material.
EN ISO 4589-2: Plastics �***ermination of burning behaviour by oxygen index �Part 2: Ambient- temperature test.
EN ISO 4589-2:Oxygen Index Test to Plastics Material - Principle
A small test specimen is supported vertically in a mixture of oxygen and nitrogen flowing upwards through a tran***rent chimney. The upper end of the specimen is ignited and the subsequent burning behaviour of the specimen is observed to co***re the period for which burning continues, or the length of specimen burnt, with specified limits for such burning. By testing a series of specimens in different oxygen concentrations, the minimum oxygen concentration is estimated. Alternatively, for co***rison with a specified minimum oxygen index value, three test specimens are tested using the relevant oxygen concentration, at least two of which are required to extinguish before any relevant burning criterion is exceeded.
EN ISO 4589-2:Oxygen Index Test to Plastics Material - Scope
This part of ISO 4589 specifies methods for ***ermining the minimum concentration of oxygen,
in admixture with nitrogen, that will support combustion of small vertical test specimens under
specified test conditions. The results are defined as oxygen index values.
Methods are provided for testing materials that are self-supporting in the form of vertical bars or sheet up to 10,5 mm thick. These methods are suitable for solid, laminated or celluar materials characterized by an apparent density greater than 100 kg/m3.
The methods may also be applicable to some cellular materials having an apparent density of less than 100 kg/m3. A method is provided for testing flexible sheet or film materials while supported vertically. For co***rative purposes, a procedure is provided for ***ermining whether or not the oxygen index of a material lies above some specified minimum value.
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Xiamen Ecosafene Product Technical Service Co.,Ltd
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Ms. Anne Lin |
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