Adhesion of elastomers: Dwell time effects
Adhesion of elastomers: Dwell time effects
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DOI：
10.1080/00218460309584
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发表时间：
2003-04-01
影响因子：
2.2
通讯作者：
Hung, WJ
中科院分区：
文献类型：
--
作者：
Gent, AN;Hamed, GR;Hung, WJ
弹性体与刚性基材的粘合强度通常会随着接触时间的延长而增加。本文研究了丁基橡胶和氯丁基橡胶粘接在某些刚性衬底上的这种效应。在长时间的接触中，剥离强度不断增加，直到在某些情况下，失效在弹性体层内变得粘合。在更高的温度下，强度增加得更快，这与控制分子运动的WLF关系一致。推测在界面处发生了缓慢的分子重排，从而增加了键合强度。提出了界面破坏向粘结破坏转变的判据。
The strength of adhesion of elastomers, to rigid substrates generally increases with time of contact. This effect has been studied for samples of butyl and chlorobutyl rubber adhering to some rigid substrates. The peel strength increased continuously over long periods of contact until in some cases failure became cohesive within the elastomer layer. At higher temperatures the strength increased more rapidly, consistent with the WLF relation governing molecular motions. It is postulated that slow molecular rearrangements occur at the interface and increase the bond strength. A criterion for the observed transition from interfacial to cohesive failure is suggested.