低烟无卤阻燃外护套料的抗开裂性能的检测研究  

作　　者：刘选斌[1,2] 王伟[1] 孙国芳[1] 罗斌[1] 王玉山[1] 沈冬[1] 薛梦驰[1] 

机构地区：[1]江苏亨通光电股份有限公司,江苏吴江215234 [2]上海亨通通信设备有限公司,上海210000

出　　处：《现代传输》2017年第4期73-75,共3页Modern Transmission

摘　　要：开裂是低烟无卤阻燃外护套的一个常见质置问题、如何在生产前对护套的原料进行有效的检测和质量管控,是很多生产厂家面临的一个难题。本文通过对一组出现开裂的低烟无卤阻燃外护套的对应原料与一组用于同一产品的普通低烟无卤阻燃外护套原料进行对比测试,从原材料的角度探索低烟无卤阻燃外护套开裂对应的检测学指标。试验结果表明,出现开裂的低烟无卤阻燃外护套的对应原料其断裂伸长率明显较低,并且没有通过耐热应力开裂试验。断裂伸长率和耐热应力开裂可作为低烟无卤阻燃外护套生产厂家在生产前重点检测的两个项目。Cracking is one of common quality issues of Low-Smoke Halogen-Free Flame(LSHF)Retardant Sheath.How to conduct effectivetesting and quality control over raw material of sheath before cable production is a challenge for many manufacturers.We tested theperformance of raw material of cracked LSHF Flame Retardant Sheath together with raw material of normal LSHF Flame RetardantSheath.The testing results show that the value of elongation at break of cracked LSHF Flame Retardant Sheath is much lower thanthat of normal LSHF Flame Retardant Sheath.In addition,the raw material of cracked LSHF Flame Retardant Sheath failed to passthe testing on thermal stress-cracking resistance.It is indicated that elongation at break and thermal stress-cracking resistance can serveas two key testing items before production of cable.

关 键 词：低烟无卤 阻燃护套料 抗开裂性能 断裂伸长率 耐热应力开裂 

分 类 号：O346.1[理学—固体力学] TM247[理学—力学]