标题: UL1598 垫片老化测试 [打印本页] 作者: 520168 时间: 2013-11-1 15:48 标题: UL1598 垫片老化测试 各位同学， ' I; Z) Z V6 \/ t/ C0 {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？ : I' B" f: l# `! Y) b7 ^$ ]& ^7 |/ m2 B4 ]
16.5.9 Gasket accelerated aging (Method A)$ B' ~3 Y/ Y9 B' A
16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test. ; l6 u( |5 F& e! v16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and ( K1 E# A2 [$ M! A8 W d, m- A. Oelongation, and the average values calculated.6 Z: d; p; q) v. C0 \2 p$ |
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a$ f Y9 ?: t2 h4 }3 @8 |) A3 o7 z
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal 3 w) e0 p6 s, G2 ~2 i, K$ Stemperature test of Clause 14. 8 \- M% D2 r/ S* ]8 F) Q16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60 ' H/ o5 S" l9 _' F/ ?percent and an average elongation of not less than 75 percent of the values determined before& |/ g9 w8 I1 @" r
conditioning. p# R5 G O# M$ C ( }( _" |0 D4 v9 H0 D谢谢！: g# H5 w6 X1 j: c) Q7 Y 作者: 273582760 时间: 2013-11-1 15:59
这个是不是对比老化前后的尺寸的变化啊？
: g# H5 w6 X1 j: c) Q7 Y