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+ ^4 t& M' t, j0 [( D1 N8 Y
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+ `& p# S8 c' Y
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—19987 y m9 S- Z8 _0 ?
( 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。 $ _* s8 B0 K/ A& C& L' h关键词: 烟密度; 测量方法; 材料; 线缆; 比较 / L* T: i$ q# q% n: W Comparison of Test Methods for Specific Optical Density of j/ k3 M {$ a u( H) e
Smoke Generated by Wire and Cable and Their Raw Material! l1 R- ^! h" {/ v. v
LI Ming-zhu，et al8 Y- f& R7 ^ a9 V4 ~
( Shanghai Electric Cable Research Institute，Shanghai 200093，China): ?1 F( |" e1 [) q# M- X
Abstract: There are a large number of low smoke zero halogen wires and cables and their raw materials in our industry． $ l0 H `# G2 [' }& o* _Need to determine the specific optical density of smoke generated by these products． The density of smoke generated " w5 e) i6 m+ D" W5 }+ l: iby a specimen was determined under the specified exposure conditions． Values determined by a test method are9 W# Q. M0 X% [
not to be considered inherent fundamental properties of the specimen． Values determined by different test methods are ) ?1 l4 i: S0 G9 W* W5 Nnot same． The new edition of standard GB/T 8323—2008 is different with the old edition GB/T 8323—1987． The 5 J8 Z6 R' ^" U+ i/ V5 Astandard GB/T 17651—1998 ( IEC 61034—1997) is different with UL 2556—2007 ( 9． 9) ． The report describes * ^/ R+ `5 V. Qthese differences．6 \+ K( ?! v. y2 _' P1 c4 U
Key words: density of smoke; test methods; material; wire and cable; comparison
发表于 2011-9-28 13:26:10
