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发表于 2012-6-7 11:13:18
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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
6 E! ?% D. d. D$ W( ?8 @* \8.4 Classification
0 p# Z& |2 g* a) K5 {" e" b2 uThe materials shall be classified HB, HB40 or HB75 (HB = horizontal burning) in accordance. N6 {2 M- O+ h2 r3 r) I
with the criteria given below.
- k1 o- x7 N8 [/ m/ i; _8.4.1 A material classified HB shall conform to one of the following criteria:" ~8 z, \+ N4 `8 F! i- S
a) it shall not visibly burn with a flame after the ignition source is removed;
+ c/ X9 M8 x4 U nb) if the test specimens continue to burn with a flame after removal of the ignition source, the
9 b/ B! s2 `* W; Wflame front shall not pass the 100 mm mark;. `! A% X* p8 r' f; v
c) if the flame front passes the 100 mm mark, it shall not have a linear burning rate exceeding
W7 U6 T2 M0 h9 @6 h7 c7 s40 mm/min for a thickness of 3,0 mm to 13,0 mm or a burning rate not exceeding. G: ~" m- |" T4 Z
75 mm/min for a thickness of less than 3,0 mm;
B0 _. j0 C. {5 s9 [- d& ]* y* ad) if the linear burning rate does not exceed 40 mm/min for tests with 3,0 mm ± 0,2 mm
9 K, [, F* N% f7 ^/ J, {5 d: [thickness, it shall automatically be accepted down to a 1,5 mm minimum thickness.: r% C3 C/ |& B
8.4.2 A material classified HB40 shall present one of the following criteria:$ f7 j4 B* p8 _$ M
a) it shall not visibly burn with a flame after the ignition source is removed;
* J6 N! F% n2 K7 l" q; z, Pb) if the test specimens continue to burn with a flame after removal of the ignition source, it
% }5 j7 ~' T$ z1 G4 x9 Lshall not have the flame front pass the 100 mm mark;( e" }/ G, B: C5 i0 n
c) if the flame front passes the 100 mm mark, it shall not have a linear burning rate exceeding. n" M# Y/ q' t: @" \
40 mm/min.
T- ^' W4 {! b% T8.4.3 A material classified HB75 shall not have a linear burning rate exceeding 75 mm/min, if the flame front passes the 100 mm mark. |
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发表于 2012-6-7 11:08:30
发表于 2012-6-12 14:25:55
:):)