UL1598 垫片老化测试

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广东安规检测
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各位同学，
, W) T& c! c' dUL1598,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？
- X4 e; X$ ~; R! D/ @7 V$ m3 A
16.5.9 Gasket accelerated aging (Method A)
8 S0 J& e6 o  W5 a8 v2 A' Z16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and
elongation, and the average values calculated.
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal
temperature test of Clause 14.
16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
1 F6 l( h$ ]1 M) _3 k) T- ?& kpercent and an average elongation of not less than 75 percent of the values determined before
2 G( S( z0 B$ b1 |  xconditioning.

2 }+ T& b+ H, I. r. D谢谢！

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这个是不是对比老化前后的尺寸的变化啊？