阻燃电线电缆标准体系对比  

Comparison on Flame Retardant Standards of Electric Wires and Cables

作　　者：赵迪 ZHAO Di(Guangzhou Nanyang Cable Group Co.,Ltd.,Guangzhou 511356,China)

机构地区：[1]广州南洋电缆集团有限公司,广州511356

出　　处：《电线电缆》2024年第6期46-50,共5页Wire & Cable

摘　　要：根据国内外阻燃电线电缆标准体系,对各标准中的考核项目、样品燃烧数量(根数)、试样绑扎方式、燃烧试验时间等关键技术指标进行对比。在标准实施方面,描述了GB/T 19666—2019《阻燃和耐火电线电缆或光缆通则》与GB 31247—2014《电缆及光缆燃烧性能分级》的不同之处,对燃烧过程中进风流量、燃烧喷灯、环境温度、燃烧气体、热释放测试系统等多维度进行研究,重点指出易被忽略的要点,并提出建议。一方面,帮助电线电缆生产企业、检测机构根据不同阻燃类别或级别进行结构设计和试验,提高检测的规范性;另一方面,可使电线电缆行业工作者深入了解阻燃电线电缆,区分不同阻燃标准体系中的阻燃特性和阻燃等级。According to domestic and international flame retardant standards of electric wires and cables,key technical indicators such as assessment items,sample burning quantity(number),sample binding method,and combustion test time are compared.In terms of standard implementation,differences between GB/T 19666—2019 General Rules for Flame Retardant and Fire Resistant Electric Wires and Cables or Optical Fiber Cables and GB 31247—2014 Classification for Burning Behavior of Electric and Optical Cables are described,and multi-dimensional research is conducted on intake air flow rate,combustion nozzle,environmental temperature,combustion gas,and heat release testing system during combustion process.Key points and suggestions that are easily overlooked are highlighted.On one hand,it helps production enterprises and testing institutions in wire and cable industry to carry out structural design and testing based on different flame retardant categories or levels,and improves the standardization of testing.On the other hand,it can enable colleagues in wire and cable industry to have a better understanding of flame retardant electric wires and cables,distinguishing characteristics and grades in different flame retardant standards.

关 键 词：电线电缆 阻燃 成束 热释放 

分 类 号：TM247.1[一般工业技术—材料科学与工程]