材料及线缆烟密度测量方法比较

zhaogy2006

摘要: 线缆行业大力发展低烟无卤线缆和材料，此类产品都要求测量烟密度。烟密度值是试样在规定试验条
件下测得的，不同测量方法得到的试验结果不同，不能认为是试样的固有性能。材料烟密度试验方法标准新
版GB/T 8323—2008 与原GB/T 8323—1987 存在诸多差异，线缆烟密度试验方法标准GB/T 17651—1998
( IEC 61034—1997) 和UL 2556—2007( 9． 9 节) 测量方法也有较大差异，文中对这些测量方法进行了比较。
+ f- c( |3 z& L* e6 @1 F: E4 ~) l关键词: 烟密度; 测量方法; 材料; 线缆; 比较
Comparison of Test Methods for Specific Optical Density of
Smoke Generated by Wire and Cable and Their Raw Material
( l6 N- W5 l* gLI Ming-zhu，et al
( Shanghai Electric Cable Research Institute，Shanghai 200093，China)
Abstract: There are a large number of low smoke zero halogen wires and cables and their raw materials in our industry．
# j" T( F% t% o  `9 M' _Need to determine the specific optical density of smoke generated by these products． The density of smoke generated
by a specimen was determined under the specified exposure conditions． Values determined by a test method are
4 g4 R9 g( }5 i9 J( anot to be considered inherent fundamental properties of the specimen． Values determined by different test methods are
; n7 n6 R$ ~- [/ c7 j  inot same． The new edition of standard GB/T 8323—2008 is different with the old edition GB/T 8323—1987． The
standard GB/T 17651—1998 ( IEC 61034—1997) is different with UL 2556—2007 ( 9． 9) ． The report describes
- J8 c' C, I6 l( _) L* [; n9 Tthese differences．
; K5 S2 v- T8 l/ z+ x1 N% M% q/ TKey words: density of smoke; test methods; material; wire and cable; comparison