Skip to main content
Log in

Interfacial bonding enhancement on the epoxy adhesive joint between engineered bamboo and steel substrates with resin pre-coating surface treatment

  • Original
  • Published:
Wood Science and Technology Aims and scope Submit manuscript

Abstract

As a green and natural engineering material, bamboo is going to be vastly used in constructions, as well as it needs to be bonded with other materials for composite application. This study applied a resin pre-coating (RPC) method on the epoxy adhesive joint between engineered bamboo and steel substrates and experimentally investigated the beneficial effect of the RPC method on the bonding property of epoxy joints. The diluted resin solution was made by dissolving resin in acetone, and three mixing concentrations by weight were prepared as 5 wt%, 10 wt% and 20 wt%. The test results showed that RPC treatment obviously increases the shear strength and energy of the epoxy joint, while the degree of the effect depends on the resin solution concentration. Moreover, the RPC method also improves the failure mode of the epoxy joint from adhesive fracture along the steel bonding interface to mixed mode of structure fracture in engineered bamboo and adhesive fracture in both adhesive interfaces, as well as increases the failure surface roughness. The working mechanism of RPC treatment is that the resin solution could take sticky epoxy adhesive penetrate into the micro-openings along the bonding surface zone and remove the bonding defects, and thereby, it enhances the interlocking effect between substrate and adhesive as well as improves the rupture strength of engineered bamboo near the bonding interface zone. Finally, it improves the bonding property of epoxy adhesive joint between engineered bamboo and steel.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

References

Download references

Acknowledgements

The authors gratefully acknowledge the financial support from the Fundamental Research Funds for the Central Universities (No. 20152CQ-SB-03), the China Scholarship Council (No. 201706515032) and the Open Fund Project of the Key Laboratory of Structure and Wind Tunnel of Guangdong Higher Education Institutes of University (No. 201701). The authors would also like to thank the UWA Centre of Microscopy to the X-ray and SEM study.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Wen Liu.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Liu, W., Zheng, Y., Hu, X. et al. Interfacial bonding enhancement on the epoxy adhesive joint between engineered bamboo and steel substrates with resin pre-coating surface treatment. Wood Sci Technol 53, 785–799 (2019). https://doi.org/10.1007/s00226-019-01109-9

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00226-019-01109-9

Navigation