ASTM-D 2863测量支持塑料类似蜡烛燃烧的最低氧气浓度（示氧值）的试验方法

ASTM-D 2863测量支持塑料类似蜡烛燃烧的最低氧气浓度（示氧值）的试验方法 This standard is issued under the fixed designation D 2863; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope * 1.1 This test method covers a fire-test-response procedure. This test method describes a procedure for measuring the minimum concentration of oxygen that will just support flaming combustion in a flowing mixture of oxygen and nitrogen. 1.2 Methods are provided for testing materials that are structurally self-supporting in the form of vertical bars or sheet up to 10.5 mm thick. These methods are suitable for solid, laminated or cellular materials characterized by an apparent density greater than 15 kg/m3. The methods may also be applicable to some cellular materials having an apparent density of less than 15 kg/m3. A method is provided for testing flexible sheet or film materials while supported vertically. NOTE 1—Although this test method has been found applicable for testing other materials, the precision of the test method has not been determined for these materials, or for specimen geometry’s and test conditions outside those recommended herein. 山纺仪器专业氧指数测定仪生产厂家，详情请查询公司网站：www.chinaqd17.com