Atmospheric pressure plasma treatment of polypropylene to improve the bonding strength of polypropylene/aluminum composites

被引:36
|
作者
Ku, J. H. [1 ]
Jung, I. H. [1 ]
Rhee, K. Y. [1 ]
Park, S. J. [2 ]
机构
[1] Kyung Hee Univ, Dept Mech Engn, Yongin 446701, South Korea
[2] Inha Univ, Dept Chem, Inchon 402751, South Korea
关键词
Layered structure; Adhesion; Surface treatments; FIBER-REINFORCED POLYPROPYLENE; CARBON-FIBER; MECHANICAL-PROPERTIES; AUTOMOTIVE BUMPERS; ADHESION; SURFACE; PRETREATMENT; INTERFACES; BEHAVIOR; FRACTURE;
D O I
10.1016/j.compositesb.2012.06.016
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effect of atmospheric pressure plasma treatment of polypropylene (PP) on the peel strength and shear strength between PP and aluminum plates was studied. The optimal treatment number was determined by measuring the changes in the contact angle, paint adhesion strength, and Scotch tape peel strength as a function of treatment number. FUR and AFM analyses were conducted to determine the chemical and physical changes on the surface of the PP due to the atmospheric pressure plasma treatment. T-peel and SLS tests were performed using untreated PP/aluminum and plasma-treated PP/aluminum specimens to determine the effect of treatment on the peel strength and shear strength of PP/aluminum composites. The results showed that eight plasma treatments were optimal, and the contact angle was reduced from similar to 91 degrees to similar to 53 degrees. The results also showed that peel and shear strengths improved by similar to 42% and similar to 44%, respectively, after eight times of treatment. The improved bonding strength was attributed to the increased surface roughness and newly created hydrophilic functional group (C=O) on the polypropylene surface caused by the atmospheric pressure plasma treatment. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1282 / 1287
页数:6
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