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
- y: F! X, K8 j. V) H: [. p) @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
/ O6 I$ X( `1 D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。
% [. \  [* h# L/ E3 ?/ }关键词: 烟密度; 测量方法; 材料; 线缆; 比较
/ \0 o* t$ u/ Z1 l7 O Comparison of Test Methods for Specific Optical Density of
# ?! O1 x% S2 U, a& Y$ ~Smoke Generated by Wire and Cable and Their Raw Material
LI Ming-zhu，et al
( Shanghai Electric Cable Research Institute，Shanghai 200093，China)
6 E; \( V* X4 l0 l% _Abstract: There are a large number of low smoke zero halogen wires and cables and their raw materials in our industry．
4 Z, k- F( v1 N7 kNeed 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
. [+ O% Q( b( ]not to be considered inherent fundamental properties of the specimen． Values determined by different test methods are
not 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
these differences．
Key words: density of smoke; test methods; material; wire and cable; comparison