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谁做过IEC 60950-22 Equipment to be installed outdoors中的附录D Gasket tests?
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D.2 Tensile strength and elongation tests
3 @- z2 ?7 @3 A1 l( VThis test is applicable to gaskets, which can stretch (such as O-rings). Gasket material, shall
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for 168 h have a tensile strength of not less than 75 % and an elongation of not less than
7 j+ O& l0 K! Y) t60 % of values determined for unaged samples. At the conclusion of the tests, there shall be7 L* e! `' Z# M2 s7 y
no visible deterioration, deformation, melting, or cracking of the material and the material
6 E2 X8 c( C3 T: i eshall not harden as determined by normal hand flexing.
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这里抗拉强度和伸长率怎么测定?试验方法如何?有参考标准吗?950-22这部分讲的太含糊了。 |
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