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各位同学，1 z5 h3 ~% v) D) u' }1 y* L R' R
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？
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0 D$ F! x) Y" o5 F6 e" c16.5.9 Gasket accelerated aging (Method A)2 {. Z: P$ Y! s9 X: I4 F6 ^
16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
3 h1 ^# n% s# f5 J/ c6 H16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and
4 G+ x* q7 y! G9 Z2 L0 Nelongation, and the average values calculated.
' A) L$ I# I3 {+ H16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a
9 W, v% V8 D" d3 D( Ttemperature 20 °C above the maximum gasket or bushing temperature as determined by the normal/ q( o9 {) S9 ] o$ M- `! p
temperature test of Clause 14.5 [9 o+ c! \4 ~4 Y* [, y
16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 600 j0 _$ b7 u9 l: R. z- {
percent and an average elongation of not less than 75 percent of the values determined before: M( ]' Q& y' [% j
conditioning.
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. C/ f, t) M9 d. T i r( I; z- f谢谢！
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发表于 2013-11-1 15:48
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