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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
1 b6 p9 v( L5 T/ h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4 W2 Q# l! ~1 K. q8 H; B' U( y+ O
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
P& T3 y1 [" d2 _ B, Q( 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。1 n8 U: e' F1 }; V$ J; e
关键词: 烟密度; 测量方法; 材料; 线缆; 比较
1 b; B* E- Y; g2 Y Comparison of Test Methods for Specific Optical Density of
( l6 Q+ k& C0 u5 i; K2 vSmoke Generated by Wire and Cable and Their Raw Material
- O" e1 ]3 c0 D8 r2 ~! w" j' ULI Ming-zhu，et al
2 C; X0 I1 f7 Y( Shanghai Electric Cable Research Institute，Shanghai 200093，China)
3 l; |3 Q# [" T M2 t2 xAbstract: There are a large number of low smoke zero halogen wires and cables and their raw materials in our industry．' P- o% C) W$ b: M, |
Need to determine the specific optical density of smoke generated by these products． The density of smoke generated
8 d' s, L( V7 r: g0 xby a specimen was determined under the specified exposure conditions． Values determined by a test method are& e9 [) i0 C/ p* u' y
not to be considered inherent fundamental properties of the specimen． Values determined by different test methods are
, U) W/ L/ n, R# E8 V8 Rnot same． The new edition of standard GB/T 8323—2008 is different with the old edition GB/T 8323—1987． The9 ~1 O1 N0 y) g+ @% n- ?
standard GB/T 17651—1998 ( IEC 61034—1997) is different with UL 2556—2007 ( 9． 9) ． The report describes6 l. C( J# h5 }
these differences．
# e* y/ X7 ?2 s: g/ ~( e7 aKey words: density of smoke; test methods; material; wire and cable; comparison |
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发表于 2011-9-28 13:26:10
