英标BS6853，欧盟EN45545-2中不仅对轨道交通车辆上使用的材料有防火阻燃的要求，对烟密度以及毒性都有严格的要求。南京睿督公司与您分享EN ISO 5659-2烟密度和毒性测试，咨询电话：025-8658 3475

ISO 5659-2:2017 Plastics-Smoke generation-Part 2: Determination of optical density by a single-chamber test.
ISO 5659-2:2017 塑料-烟雾产生-第2部分:用独立燃烧室检测测定光密度。

ISO 5659-2:2017 specifies a method of measuring smoke production from the exposed surface of specimens of materials, composites or assemblies. It is applicable to specimens that have an essentially flat surface and do not exceed 25 mm in thickness when placed in a horizontal orientation and subjected to specified levels of thermal irradiance in a closed cabinet with or without the application of a pilot flame. This method of test is applicable to all plastics and may also be used for the evaluation of other materials (e.g. rubbers, textile-coverings, painted surfaces, wood and other materials).

It is intended that the values of optical density determined by this test be taken as specific to the specimen or assembly material in the form and thickness tested, and are not to be considered inherent, fundamental properties.

The test is intended primarily for use in research and development and fire safety engineering in buildings, trains, ships, etc. and not as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke that might be generated by the materials upon exposure to heat and flame under other (actual) exposure conditions. This test procedure excludes the effect of irritants on the eye.

It is emphasized that smoke production from a material varies according to the irradiance level to which the specimen is exposed. The results yielded from the method specified in this standard are based on exposure to the specific irradiance levels of 25 kW/m2 and 50 kW/m2.

EN ISO 5659-2烟密度测试

样品预处理：
样品需要放置在温度为23℃±2℃，湿度为（50±10）%的环境中，至少放置24H，以达到测试要求。

EN ISO 5659-2烟密度测试方法：
样品在一个密封的炉内进行测试，样品在25KW/m2或者50KW/m2条件下进行测试，记录第1.5分钟、第4分钟烟密度以及这个测试时间内最大烟密度数据，整个测试时间为20分钟

EN ISO 5659-2毒性测试

样品预处理：
样品测试前，至少在23±2℃的温度和50±5%的湿度下放置48小时，直到样品质量稳定。

测试方法：
样品暴露在25KW/m2或50KW/m2的辐射热源条件下进行测试，通过对CO2、CO、HF、HCL、HCN、NO2、SO2、HBr这八种气体来分析毒性，测试时间为10分钟，记录第4分钟和第8分钟的最大的烟密度及各个气体的含量。

EN ISO 5659-2测试数据要求：
不同风险等级对数据要求会有所差别

相关阅读：
EN ISO 4589-2氧指数测试：http://www.fire-test.com/teststandard/eu/8873.html
EN ISO 5659-2烟密度测试：http://www.fire-test.com/teststandard/eu/8798.html
EN ISO 5659-2毒性测试：http://www.fire-test.com/teststandard/eu/8793.html 

更多关于南京睿督公司及欧标EN 45545-2 防火检测的具体内容，请咨询南京睿督公司
南京睿督公司咨询电话：400-603-6575   025-8658 3475
网址：www.fire-test.com
邮箱：info@fire-test.com

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