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谁做过IEC 60950-22 Equipment to be installed outdoors中的附录D Gasket tests?* t2 ^: H1 `; a/ _* t+ m
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其中的
- P; t, x/ } c! \% \" [5 LD.2 Tensile strength and elongation tests8 M+ V. I! B" J
This test is applicable to gaskets, which can stretch (such as O-rings). Gasket material, shall7 J6 {: _2 @" f P7 h0 `6 h. \
be of such quality that samples subjected to a temperature of 69 °C to 70 °C in circulating air
3 }' d+ Q# W4 a S2 Ffor 168 h have a tensile strength of not less than 75 % and an elongation of not less than. v, U* E, ?- }# c6 r' T
60 % of values determined for unaged samples. At the conclusion of the tests, there shall be
. E2 O8 c# f/ i3 C3 ?/ pno visible deterioration, deformation, melting, or cracking of the material and the material
% e! v% v4 o1 t- [shall 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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