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，0 S: p$ h9 c( T! k% [. `9 M
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？ , H! ^+ P& s8 D {5 W7 ^6 `9 U, Y5 k& q I. ~ j
16.5.9 Gasket accelerated aging (Method A) ; ]2 f: \/ T0 h# d16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test. " _6 ?( i" _# X# z) }. f1 Z8 x16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and; A: Y' y$ A d* |# R; ^2 `! m% G7 C
elongation, and the average values calculated.. o3 V% P& P) J! j6 o
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a ! {, L$ [' Q# N) h, Rtemperature 20 °C above the maximum gasket or bushing temperature as determined by the normal/ _" H3 z5 T9 h+ q7 l
temperature test of Clause 14. 8 `) t6 h7 ?( N: V0 t8 U, Y- I16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60 , c2 L& [+ F9 y9 H) t/ {# epercent and an average elongation of not less than 75 percent of the values determined before0 `4 `1 W; g! r5 N9 E, |' [
conditioning.3 z( F; C5 |9 t
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