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各位同学， y) ^2 F6 @2 \/ m1 M
UL1598,第16章垫片加速老化测试，评估垫片的张力和伸长率，各位是用多大的力去拉的？
) j3 j7 D3 b5 }+ |! g' _4 L) x, f- Y8 M. c! l7 {( K# b
16.5.9 Gasket accelerated aging (Method A)
' t7 n, v5 F. E" y% g5 \16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
# i% C- f" I& q+ G16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and: V# L) ^3 f$ c$ \4 e; h" x$ O, S
elongation, and the average values calculated.& V! e7 f. W3 g# y, _; H. l
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a5 f' m8 O- W* L& c5 i
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal
9 j/ P" v8 V- Ctemperature test of Clause 14.& Z% p. T: V5 }* N
16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
: U+ a2 T" k3 c/ Z' c, Qpercent and an average elongation of not less than 75 percent of the values determined before# C) x; B2 t5 ~+ ^: ?
conditioning.
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f, o6 B, S. I: t: G9 Y谢谢！ ; e/ G, m: l! H7 y8 `% q. n5 R
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发表于 2013-11-1 15:48
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