標準號：BS ISO/TR 5659-3-1999
中文標準名稱：塑料.煙霧的產生.用動態流動方法對光密度進行測定
英文標準名稱：Plastics - Smoke generation - Determination of optical density by a dynamic flow method
標準類型：G31
發布日期：2000/4/15 12:00:00
實施日期：2000/4/15 12:00:00
中國標準分類號：G31
國際標準分類號：13.220.40;83.080.01
適用范圍：1 This part of ISO 5659 specifies a method of measuring smoke production from the exposed surface of specimens of essentially flat materials, composites or assemblies not exceeding 25 mm in thickness, when placed in a horizontal orientation and subjected to specified levels of thermal irradiance under forced ventilation conditions, with or without the application of a pilot flame. This method of test is applicable to plastics and may also be used for the evaluation of other materials (e.g. rubbers, textile coverings, painted surfaces, wood and other building materials). 2 Values of optical density determined by this test are specific to the specimen or assembly material in the form and thickness tested and are not to be considered inherent, fundamental properties. 3 The test is intended for use in research and development and not primarily as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke which may be generated by the materials upon exposure to heat and flame under other exposure conditions, such as end-use conditions, nor has any correlation been established with measurements derived from other test methods. 4 It is emphasized that smoke production from a material varies according to the ventilation conditions and the irradiance level to which the specimen is exposed. In making use of the results of this method, it should be borne in mind that the results are based on exposure to the specific irradiance levels of 25 kW/m2 and of 50 kW/m