(Fujian Electric Wire and Cable Product Quality Supervision and Inspection Center, Nanping 353000, China)
Abstract: The smoke density testing for low smoke halogen-free cable is one of the important indicators that could feedback the combustion performance of the cable. This paper analyzed the main factors that influenced this experiment from aspects of the theory of the smoke density testing, requirements of the test set, the process of the test, etc. It proposed specific control measures for the combustion chamber, the optical test unit, the standard fire source, the smoke mixture, choice of the number of test samples. The result shows that these measures promote the accuracy and reliability of the testing.
Key words: smoke density; cable; influencing factor; control measure
参考文献
[1] 姚红艳,杨森,邓小波,陈现景,王继刚,李义民,宋甲芳. 不同因素对建筑材料烟密度等级检测结果影响的探讨[J] . 中国科技纵横,2011(13) :169-170.
[2] 宋静静,王正刚,樊轩虎,肖凤,张义军. 不同结构及材料下阻燃光缆烟密度测试结果的分析[J] .现代传输,2020(2) :51-55.
[3] 全国电线电缆标准化技术委员会. 电缆或光缆在特定条件下燃烧的烟密度测定 第 1 部分:试验装置:GB/T 17651.1—2021[S] . 北京:中国标准出版社,2021 :1-2.
[4] 全国电线电缆标准化技术委员会. 电缆或光缆在特定条件下燃烧的烟密度测定 第 2 部分:试验程序和要求:GB/T 17651.2—2021[S]. 北京:中国标准出版社,2021 :1-3.
[5] 全国电线电缆标准化技术委员会. 阻燃和耐火电线电缆或光缆通则:GB/T 19666—2019[S]. 北京:中国标准出版社,2019:7.
[6] 朱萍,祁泽慧,杨金华,周姬旻. 光电线缆烟密度试验的影响因素[J] . 光纤与电缆及其应用技术,2015(3) :7-9.
[7] 王彩生, 向德坤, 魏林强, 胥明广, 梁萍. 电缆烟密度测定不合格率较高的分析[J] . 电世界,2013(12) :18-19.
[8] 张龙,晁华,胡曼,宁宾华. 汽车内饰材料烟密度等级测定影响因素研究[J] . 消防科学与技术,2021(8) :1129-1132.