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各位同学，
) [- E/ L& i! u9 e8 PUL1598,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？- E, p' W7 s* x, D" l: `
) n: X+ g$ G% x! j9 s* Q4 d16.5.9 Gasket accelerated aging (Method A)
9 ]' a6 c( G" n, A3 `( }7 n16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
4 f9 j; w0 f4 M6 W! e" o16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and1 p* i. }4 `/ R4 r) U$ {
elongation, and the average values calculated.* s% ?, ?/ \; G5 e0 |/ r
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a) ^# _ X, v# o- e3 K, c
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal4 z( |7 `' d/ n' q$ E6 r
temperature test of Clause 14.. V. q2 h5 ]$ L; f% i s( L) {( [! b
16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
' z$ s6 l# x, ? S$ J' i# }& ?percent and an average elongation of not less than 75 percent of the values determined before
( y" t5 y9 m+ o" g) \' P! iconditioning.
) s* x3 x, W" i, n9 Z# |2 I
2 I/ l; b$ N4 T谢谢！ 6 T6 A9 l; b8 ]1 W+ W7 g3 y
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