Preliminary study on bio-based polyurethane adhesive/aluminum laminated composites for automotive applications

Norazwani Muhammad Zain, Eida Nadirah Roslin, Sahrim Ahmad

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalInternational Journal of Adhesion and Adhesives
Volume71
DOIs
Publication statusPublished - 1 Dec 2016

Fingerprint

Polyurethanes
Laminated composites
Aluminum
Adhesives
Polycaprolactone
Polyols
Nuclear magnetic resonance
Palm oil
Mechanical testing
Bond strength (materials)
Ring opening polymerization
Automotive industry
Thermoplastics
Strength of materials
Swelling
Thermodynamic stability
Molecular weight
Viscosity
polycaprolactone
polyol

Keywords

  • Bio-based polyurethane
  • Laminated composite
  • Lap shear
  • Thermal properties

ASJC Scopus subject areas

  • Biomaterials
  • Chemical Engineering(all)
  • Polymers and Plastics

Cite this

Preliminary study on bio-based polyurethane adhesive/aluminum laminated composites for automotive applications. / Zain, Norazwani Muhammad; Roslin, Eida Nadirah; Ahmad, Sahrim.

In: International Journal of Adhesion and Adhesives, Vol. 71, 01.12.2016, p. 1-9.

Research output: Contribution to journalArticle

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