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http://hdl.handle.net/123456789/15167
Title: | Preliminary study on bio-based polyurethane adhesive/aluminum laminated composites for automotive applications |
Authors: | Zain, Roslin, E.N. N.M. Ahmad, S. |
Keywords: | Bio-based polyurethane Laminated composite Lap shear Thermal properties |
Issue Date: | Jan-2017 |
Publisher: | International Journal of Adhesion and Adhesives |
Abstract: | Composite materials that are offered for real applications in the automotive industry vary from thermoplastics to laminated structures. This study focuses on a preliminary study on the processing and characterization of bio-based polyurethane (PU) adhesive/aluminum-laminated composites. Five different formulations of PU adhesives were prepared from five different formulations of polycaprolactone (PCL) polyols. The PCL polyols were synthesized by a ring opening polymerization of ɛ-caprolactone initiated by a blend of palm kernel oil polyesteramide (PPKO) and 1,6-hexanediol (HDO) with various weight ratios of PPKO:HDO (0:100, 25:75, 50:50, 75:25, and 100:0). The PCL polyols were reacted with a mixture of aromatic and cycloaliphatic diisocyanate. Physical and chemical analyses of PCL polyols such as viscosity, OH number, molecular weight, and proton nuclear magnetic resonance (1H-NMR) were carried out. The swelling and mechanical testing were performed to explore the correlation between the structure of PU network and its properties. The adhesion strength of bio-based PU/aluminum-laminated composites was found to be influenced by the structure of the PU network system. The ratio of 75:25 (PPKO:HDO) was found to be the optimum based on the mechanical strength of laminated composites and the thermal stability of the PU adhesive. © 2016 Elsevier Ltd |
URI: | http://www.sciencedirect.com/science/article/pii/S0143749616301531 http://ir.unikl.edu.my/jspui/handle/123456789/15167 |
ISSN: | 0143-7496 |
Appears in Collections: | Journal Articles |
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