Atomistic Investigation on the Wetting Behavior and Interfacial Joining of Polymer-Metal Interface
Atomistic Investigation on the Wetting Behavior and Interfacial Joining of Polymer-Metal Interface
复制标题
聚合物-金属界面润湿行为和界面连接的原子研究
DOI：
10.3390/polym12081696
复制
发表时间：
2020-07
期刊：
影响因子：
5
通讯作者：
Dietmar Drummer
中科院分区：
文献类型：
--
作者：
Mingyong Zhou;Liang Fu;Fengze Jiang;Bingyan Jiang;Dietmar Drummer
聚合物-金属混合结构可以在保证结构强度的同时减轻部件的重量，从而节省成本和随后的燃料消耗。聚合物-金属杂化结构的界面强度主要由界面相互作用和机械联锁的协同作用决定。本文采用分子动力学模拟方法研究了聚丙烯（PP）熔体在金属表面的润湿行为。构建了具有光滑表面和纳米柱阵列的原子模型。分析了熔体温度、表面粗糙度和金属材料对润湿行为和界面连接的影响。然后对注塑成型pp -金属复合结构的分离过程进行了模拟，分析了其连接强度。结果表明，初始球形的PP模型在润湿模拟过程中逐渐崩溃。温度越高，分子链就越容易沿着表面扩散。对于表面粗糙的基材，在柱的底部或上表面观察到高密度。随着孔隙率的降低，接触态由Wenzel态向Cassie-Baxter态过渡。注塑成型PP-Fe杂化结构在分离过程中的内力明显较高，表现出较大的连接强度。
Polymer-metal hybrid structures can reduce the weight of components while ensuring the structural strength, which in turn save cost and subsequently fuel consumption. The interface strength of polymer-metal hybrid structure is mainly determined by the synergistic effects of interfacial interaction and mechanical interlocking. In this study, the wetting behavior of polypropylene (PP) melt on metal surface was studied by molecular dynamics simulation. Atomistic models with smooth surface and nano-column arrays on Al substrate were constructed. Influences of melt temperature, surface roughness and metal material on the wetting behavior and interfacial joining were analyzed. Afterwards the separation process of injection-molded PP-metal hybrid structure was simulated to analyze joining strength. Results show that the initially sphere-like PP model gradually collapses in the wetting simulation. With a higher temperature, it is easier for molecule chains to spread along the surface. For substrate with rough surface, high density is observed at the bottom or on the upper surface of the column. The contact state is transitioning from Wenzel state to Cassie–Baxter state with the decrease of void fraction. The inner force of injection-molded PP-Fe hybrid structure during the separation process is obviously higher, demonstrating a greater joining strength.
登录
查看更多内容
影响因子：
3.4
作者：
Loaldi, Dario;Regi, Francesco;Tosello, Guido
通讯作者：
Tosello, Guido
影响因子：
5
作者：
G. Zitzenbacher;H. Dirnberger;M. Längauer;C. Holzer
通讯作者：
G. Zitzenbacher;H. Dirnberger;M. Längauer;C. Holzer
影响因子：
5.5
作者：
Moyassari, Ali;Gkourmpis, Thomas;Gedde, Ulf W.
通讯作者：
Gedde, Ulf W.
影响因子：
5.5
作者：
Cao, Zhen;Dobrynin, Andrey V.
通讯作者：
Dobrynin, Andrey V.
DOI：
10.1016/j.jmatprotec.2007.06.058
发表时间：
2008-02-01
影响因子：
6.3
作者：
Grujicic, M.;Sellappan, V.;Holzleitner, Jochen
通讯作者：
Holzleitner, Jochen