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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
6 c9 P3 I7 @* ]7 R8 R( s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
; |9 O" g. u) o+ C# j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! A( |, d0 s1 c* k4 I) @& A" s6 a
( 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。
; N+ U) U+ m S关键词: 烟密度; 测量方法; 材料; 线缆; 比较 T2 F! v0 w3 L: C" p d
Comparison of Test Methods for Specific Optical Density of1 d/ g2 n& F) J4 `. W- o
Smoke Generated by Wire and Cable and Their Raw Material
s" `+ \( d) M# U7 Y+ v- |* rLI Ming-zhu，et al* @0 j, M# c9 Q, }; v
( Shanghai Electric Cable Research Institute，Shanghai 200093，China)! V- C2 T" O# z$ x0 X5 I
Abstract: There are a large number of low smoke zero halogen wires and cables and their raw materials in our industry．
0 `3 I2 O5 C' XNeed to determine the specific optical density of smoke generated by these products． The density of smoke generated0 l$ K) P; k6 Y& `/ h
by a specimen was determined under the specified exposure conditions． Values determined by a test method are
P) { \$ I$ ]$ W/ O% Qnot to be considered inherent fundamental properties of the specimen． Values determined by different test methods are
# V3 N' E) ?' u. r s- Unot same． The new edition of standard GB/T 8323—2008 is different with the old edition GB/T 8323—1987． The1 t) ^1 o d5 l0 u! e
standard GB/T 17651—1998 ( IEC 61034—1997) is different with UL 2556—2007 ( 9． 9) ． The report describes
* _' E" O r$ J X! `% n0 g5 [/ Uthese differences．
: P% P% z& w% g# x f3 TKey words: density of smoke; test methods; material; wire and cable; comparison |
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发表于 2011-9-28 13:26:10
