摘要
采用碱蚀工艺制备了不同微结构形貌的铝合金基材,研究了腐蚀液浓度与腐蚀时间对其表面微结构形貌的影响规律;以聚丙烯(PP)材料为例,研究了聚合物/金属异质界面的润湿行为及温度因素的影响规律,结果表明,氢氧化钠(NaOH)腐蚀液浓度为5 mol/L、腐蚀时间为3 min时,可以得到分布均匀、大小相当且介于1.6~2.0 μm之间的凹凸形貌结构;通过对金属基材表面微尺度凹凸形貌修饰可有效提高界面润湿性能,升高熔体温度可以进一步促进界面之间的润湿黏合,共同作用可使得界面接触角由最初的121°减小至58.3°,由疏水性转向亲水性,利于界面黏合成型。
The aluminum alloy substrates with different microstructures were prepared by alkali etching process.The effects of corrosion concentration and time on the surface microstructure of them were studied.The commonly used thermoplastic polymer of polypropylene(PP)was selected as a sample material.The wetting behavior at polymer/metal interface was studied,and the influence of temperature factor on it was also investigated.The results illustrate that the morphology micro-concave-convex structure with a size of 1.6~2.0 μm could be etched in the surface of the aluminum alloy when it was placed into the sodium hydroxide(NaOH)3 min with the concentration of 5 mol/L.The interface wettability can be effectively improved by preparing the micro-concave-convex structure on the surface of the metal substrate.The increasing of the melt temperature is conducive to promote the wettability among the polymer/metal interfaces.The synthetic actions between them can reduce the interface contact angle from the initial value of 121° to 58.3°,from hydrophobic to hydrophilic,which is help for interfacial adhesion molding.
作者
易泽伟
迟文潮
邹佳威
万聪
YI Ze-wei;CHI When-chao;ZOU Jia-wei;WAN Cong(School of Mechanical and Electrical Engineering,Nanchang University,Nanchang 330031,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2019年第9期86-89,105,共5页
China Plastics Industry
基金
2018年大学生创新创业训练计划项目资助(201802196)
关键词
聚丙烯
铝合金
界面
形貌
润湿
Polypropylene
Aluminum Alloy
Interface
Morphology
Wetting
