|
|
楼主 |
发表于 2012-6-7 11:13:18
|
显示全部楼层
来自： 中国广东深圳
GB-T 2408-2008塑料 燃烧性能的测定 水平法和垂直法 等效采用IEC 60695 11-10：1999 以下是IEC 60695 11-10：2003的相关内容+ h9 B3 R0 E$ ^: r/ x* E
8.4 Classification
0 J; ^& C$ ^: w" ?: w* @The materials shall be classified HB, HB40 or HB75 (HB = horizontal burning) in accordance
9 ?" _2 M3 M2 a( h7 Xwith the criteria given below.+ s5 o. f/ C$ q( d- O
8.4.1 A material classified HB shall conform to one of the following criteria:1 V; e) `. D5 L) D8 C
a) it shall not visibly burn with a flame after the ignition source is removed;: s$ \) h0 c" F$ S2 n
b) if the test specimens continue to burn with a flame after removal of the ignition source, the2 v9 t( x$ w$ p
flame front shall not pass the 100 mm mark;+ l0 N) L6 Z# Z2 F
c) if the flame front passes the 100 mm mark, it shall not have a linear burning rate exceeding
) e6 y# c$ i3 s T$ L; ~) c3 r& D40 mm/min for a thickness of 3,0 mm to 13,0 mm or a burning rate not exceeding
7 ^6 {( S1 d* t6 \# g; q75 mm/min for a thickness of less than 3,0 mm;
6 B# H( q- R( {5 j4 |0 h2 y6 \d) if the linear burning rate does not exceed 40 mm/min for tests with 3,0 mm ± 0,2 mm
: {5 a- n! w% H# vthickness, it shall automatically be accepted down to a 1,5 mm minimum thickness.$ K* G0 Y1 ]. J$ o n$ R, T% C1 f
8.4.2 A material classified HB40 shall present one of the following criteria:$ |6 x5 C2 w! z$ [ b2 _+ E5 e
a) it shall not visibly burn with a flame after the ignition source is removed;
/ O% }% H8 k5 E9 P: _4 |b) if the test specimens continue to burn with a flame after removal of the ignition source, it
2 v/ J5 M+ R+ x0 Qshall not have the flame front pass the 100 mm mark;3 @. z/ ^$ ^: _; m
c) if the flame front passes the 100 mm mark, it shall not have a linear burning rate exceeding
~, h5 r8 _" n+ R. j) O* p* o9 W40 mm/min.- f: n* U1 m, g( D
8.4.3 A material classified HB75 shall not have a linear burning rate exceeding 75 mm/min, if the flame front passes the 100 mm mark. |
|
发表于 2012-6-7 11:08:30
发表于 2012-6-12 14:25:55
:):)