JOINT STRENGTH OF MIXED SILYL MODIFIED POLYMER-EPOXY ADHESIVE ON SINGLE LAP JOINT ETCHED ALUMINUM

Authors

  • Sri Hastuti Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia
  • Neng Sri Suharty Department of Chemistry, Universitas Sebelas Maret, Surakarta, Indonesia
  • Triyono Triyono Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia

DOI:

https://doi.org/10.11113/jt.v79.11873

Keywords:

Mixed adhesive, silyl modified polymer, epoxy, aluminum, single lap joint

Abstract

Currently, aluminum alloy is widely used in an automotive structure such as bus body materials due to decreasing the structure weight and fuel consumption. In this structure, there are tens or even hundreds of joints to meet the engineering design. Because of its advantages, the adhesive joint is usually chosen. Aluminum is stiff enough, but it can deform easily. Due to its deformability, cracks will occur easily on the aluminum adhesive joint if it is joined using strong and stiff adhesive. Otherwise, it will be very weak if it is joined using flexible adhesive. The mixture of the strong adhesive, epoxy (EP) and the ductile adhesive, silyl modified polymer (SMP) was proposed for joining aluminum. This study aims to evaluate the effect of the composition of mixed adhesive and its thickness on the strength of single lap joint (SLJ) etched aluminum. Before joining process, the aluminum surface was treated by sandpapering (SDP), and then chromic-sulphuric acid (CSA) etch. The composition variations of mixed adhesive were 100%EP, 75%SMP:25%EP, 50%SMP:50%EP, 25%SMP:75%EP, and 100%SMP. Mixed adhesives were prepared by using a stirrer with a spatula for 4-6 minutes at 60 rpm. SLJ specimens were manufactured through bonding of two aluminum sheets surface with an adhesive and giving 0.1 MPa pressure. The thickness adhesive was varied of 0.2 mm, 0.4 mm, and 0.6 mm. Specimens got a post-curing process at 100oC for 100 minutes. The shear tests were performed to evaluate the strength of SLJ. The experimental result showed that the surface treatments of SDP and CSA give higher porosity on the adherend surface. The highest strength and elasticity modulus were achieved by joint of 25%SMP:75%EP mixed adhesive joints. The addition a few of SMP adhesive in EP adhesive and adherend surface treatment increases the joint strength. All of the joints have mixed failure mode except the 100%EP adhesive joint has an adhesive failure mode.

References

da Silva, L. F. M., Ferreira, N. M. A. J., Richter-Trummer, V., and Marques E. A. S. 2010. Effect of Grooves on the Strength of Adhesively Bonded Joints. International Journal of Adhesion & Adhesives. 30: 735-743.

DOI: https://doi.org/10.1016/j.ijadhadh.2010.07.005.

Arenas, J. M., Alía, C., Narbón, J. J., Ocaña, R., and Gonzalez, C. 2013. Considerations for the Industrials Applications of Structural Adhesive Joints in the Aluminum-composite Material Bonding. Composite: Part B. 44: 417-423.

DOI: https://doi.org/10.1016/j.compositesb.2012.04.026.

Banea, M. D. and da Silva, L. F. M. 2009. Adhesively Bonded Joints in Composite Materials: An Overview. Proceedings of the Institution of Mechanical and Applications Engineers, Part L: Journal of Materials Design. 223(1).

DOI: DOI: 10.1243/14644207JMDA219.

Vietri, U., Guadagno L., Raimondo M., Vertuccio L., and Lafdi K. 2014. Nanoï¬lled Epoxy Adhesive for Structural Aeronautic Materials. Journal composites: Part B. 61: 73-83.

DOI: https://doi.org/10.1016/j.compositesb.2014.01.032.

Pereira, A. M., Ferreira, J. M., Antunesdan, F. V., and Bartolo P. J. 2010. Analysis of Manufacturing Parameters on the Shear Strength of Aluminum Adhesive Single-lap Joints. Journal of Materials Processing Technology. 210: 610-617.

DOI: https://doi.org/10.1016/j.jmatprotec.2009.11.006.

Zhou, Y. Pervin, F. Lewis, L. and Jeelani, S. 2007. Experimental Study on the Thermal and Mechanical Properties of Multi Walled Carbon Nanotube-Reinforced Epoxy. Materials Science and Engineering: A. 452-453(0): 657-664.

DOI: https://doi.org/10.1016/j.msea.2006.11.066.

Norhakim, N. Ahmad, S. H J., Chia C.H. and Huang, N. M. 2014. Mechanical and Thermal Properties of Graphene Oxide Filled Epoxy Nanocomposite. Journal Sains Malaysia. 43(4): 603-609.

Bouchikhi, A. S. Megueni, A. Gouasmi, S. Boukoulda, F. B. 2013. Effect of Mixed Adhesive Joints and Tapered Plate on Stresses in Retroï¬tted Beams Bonded with A Fiber-reinforced Polymer Plate. International Journal Materials and Design. 50: 893-904.

DOI: https://doi.org/10.1016/j.matdes.2013.03.052.

Diharjo, K., Firdaus, Y., Raharjo, W. W., and Tjahjana, D. P. T. 2014. Improvement of Strength on Joint of GFRP/Al-5083 Joint Using Epoxy/Al-Powder Adhesive for Electric Vehicle Car Body. 2014 IEEE International Conference on Electrical Engineering and Computer Science.

DOI: 10.1109/ICEECS.2014.7045244.

Kahraman, R. Sunar, M. and Yilbas, B. 2008. Influence of Adhesive Thickness and Filler Content on The Mechanical Performance of Aluminium Single-Lap Joints Bonded with Aluminium Powder Filled Epoxy Adhesive. Journal of Materials Processing Technology. 205(1-3): 183-189.

DOI: https://doi.org/10.1016/j.jmatprotec.2007.11.121

Pereira, A. M. Reis, P.N.B. Ferreira, J. A. M. and Antunes, F. V. 2013. Effect of Saline Environment on Mechanical Properties of Adhesive Joints. International Journal of Adhesion & Adhesives, 47: 99-104.

DOI: https://doi.org/10.1016/j.ijadhadh.2013.08.002.

da Silva L. F. M and Lopes, M. J. C. Q. 2009. Joint Strength Optimization by the Mixed-adhesive Technique. International Journal of Adhesion & Adhesives. 29: 509-514.

DOI: https://doi.org/10.1016/j.ijadhadh.2008.09.009L.

Marques, E. A. S. da Silva, L. F. M. Flaviani, M. 2015. Testing and Simulation of Mixed Adhesive Joints for Aerospace Applications. International Journal Composites: Part B. 74: 123-130.

DOI: https://doi.org/10.1016/j.compositesb.2015.01.005.

Kim, Y. J., LaBere, J., and Yoshitake, I. 2013. Hybrid epoxy-silyl Modified Polymer Adhesives for CFRP Sheets Bonded to a Steel Substrate. Journal Composites: Part B. 51: 233-245.

DOI: https://doi.org/10.1016/j.compositesb.2013.03.026.

Banea, M. D. and da Silva, L. F. M. 2009. Adhesively Bonded Joints in Composite Materials: An Overview. Proceedings of the Institution of Mechanical and Applications Engineers, Part L: Journal of Materials Design. 223(1).

DOI: DOI: 10.1243/14644207JMDA219.

R. Trethewey Kenneth. 1988. Corrosion. Longman Group. UK Limited.

Lonardo, P. M., and Bruzzone, A. A. G. 1989. Influence of Surface Roughness Parameters on the Mechanical Strength In Metal Gluing. CIRP Ann Manuf Technol. 38(1): 571-574.

DOI: https://doi.org/10.1016/S0007-8506(07)62771-1.

Sahid, M., and Hashim, S. A. 2002. Effect of Surface Roughness on the Strength of Cleavage Joints. International Journal of Adhesion & Adhesives. 22(3): 235-244.

DOI: https://doi.org/10.1016/S0143-7496(01)00059-8.

Benard, Q., Fois, M., and Grisel, M. 2005. Peel Ply Surface Treatment for Composite Assemblies: Chemistry and Morphology Effects. Composite A. 36(11): 1562-1568.

DOI: https://doi.org/10.1016/j.compositesa.2005.02.012.

Budhe, S., Ghumatkar, A., Birajdar N., and Banea, M. D. 2015. Effect of Surface Roughness Using Different Adherend Materials on the Adhesive Bond Strength. Applied Adhesion Science. 3: 20. DOI: 10.1186/s40563-015-0050-4.

Khan, M. H. and Gali, O. A. A. 2016. Edrisy and A. R. Riahi, Effect of Oxidation And Surface Roughness On The Shear Strength Of Single-lap-joint Adhesively Bonded Metal Specimens by Tension Loading. Applied Adhesion Science. 4: 21. DOI: 10.1186/s40563-016-0077-1.

Prolongo, S. G., and Ureña, A. 2009. Effect of Surface Pre-Treatment on the Adhesive Strength of Epoxy–aluminum Joints. International Journal of Adhesion & Adhesives. 29: 23-31. DOI: https://doi.org/10.1016/j.ijadhadh.2008.01.001.

L. zhai, G. Ling, J. Li and Wang, Y. 2006. The Effect of Nano Particles on the Adhesion of Epoxy Adhesive. Materials Letters. 60: 3031-3033.

DOI: https://doi.org/10.1016/j.matlet.2006.02.038.

Baldan, A. 2012. Adhesion Phenomena in Bonded Joint. International Journal of Adhesion & Adhesives. 38: 95-116.

DOI: https://doi.org/10.1016/j.ijadhadh.2012.04.007.

Barbora N., Barbora K., Pavel L., Jiří Š. 2015. Determination of Adhesion of Silyl Modified Polymer Adhesives to Wooden Façade Cladding–Case Study. Procedia Engineering. 108: 410-418. DOI: https://doi.org/10.1016/j.proeng.2015.06.165.

Prolongo, S. G., Gude, M. R., and Ureña, A. 2010. Nanoreinforced Adhesives, Nanofibers, Ashok Kumar (Ed.). InTech. DOI: 10.5772/8147.

Downloads

Published

2017-11-02

Issue

Vol. 79 No. 7-2: Advanced on Technology in Material and Environmental Engineering

Section

Science and Engineering

License

Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.

How to Cite

JOINT STRENGTH OF MIXED SILYL MODIFIED POLYMER-EPOXY ADHESIVE ON SINGLE LAP JOINT ETCHED ALUMINUM. (2017). Jurnal Teknologi, 79(7-2). https://doi.org/10.11113/jt.v79.11873