Uniaxial ratcheting behavior of hygrothermal aging anisotropic conductive adhesive film
Uniaxial ratcheting behavior of hygrothermal aging anisotropic conductive adhesive film
复制标题
湿热老化各向异性导电胶膜的单轴棘轮行为
DOI：
10.1016/j.polymertesting.2013.09.011
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发表时间：
2013-12
期刊：
影响因子：
5.1
通讯作者：
Jianhua Ma
中科院分区：
文献类型：
--
作者：
Dong Zhang;Hong Gao;Lilan Gao;Jianhua Ma
利用DMA-Q800高温棘轮试验机，对各向异性导电胶膜（ACF）进行了应力控制下的单轴棘轮试验。在室温和120 °C下研究了不同湿热老化时间的ACF试样的棘轮行为。比较了加载速率、平均应力和应力幅对未时效和时效试样棘轮行为的影响。结果表明，在相同的实验条件下，老化试件的棘轮应变小于未老化试件的棘轮应变。湿热老化提高了老化试样的循环稳定性。在室温下，随着时效时间的增加，湿热时效时间≤ 96 h时，棘轮应变随时效时间的增加而增加，超过96 h后，棘轮应变随时效时间的增加而减小。在120 °C下，ACF的棘轮应变仅随湿热老化时间的增加而减小。加载速率、平均应力和应力幅值对未老化和老化ACF棘轮行为的影响不同，湿热老化减弱了它们的影响。
A series of uniaxial ratcheting experiments on anisotropic conductive adhesive film (ACF) were conducted under stress-control at elevated temperature using a DMA-Q800. The ratcheting behavior of ACF specimens with different hygrothermal aging times was investigated at room temperature and 120 °C. The effects of loading rate, mean stress and stress amplitude on the ratcheting behavior of unaged and aged specimens were compared. The results show that the ratcheting strains of aged specimens are smaller than those of unaged specimens under the same experimental conditions. The cycling stability of aged specimens is increased by hygrothermal aging. At room temperature, with the increase of aging time, the ratcheting strains of aged specimens increase with hygrothermal aging time when it is less than or equal to 96 h but, however, decrease when it exceeds 96 h. At 120 °C the ratcheting strains of ACF only decrease with the increase of hygrothermal aging time. Additionally, the effects of loading rate, mean stress and stress amplitude on the ratcheting behavior of unaged and aged ACF are different and their effects are weakened by hygrothermal aging.
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