Studying the effect of acetylation Beech on interfacial bonding resistance of transparent paint (nitrocellulose lacquer, asid catalyzed lacquer and Half Ppolyester)

Tahmasebi, Shahram; Bazyar, Behzad; Khademi Islam, Habibolah; Ghofrani, Mohammad

doi:10.22092/ijwpr.2015.102671

Document Type : Research Paper

Authors

¹ M.Sc., Department of Wood and Paper Science and Technology, Science and Research Branch of Islamic Azad University, Tehran, Iran

² Assistant Professor, Department of Wood and Paper Industry, Science and Research Branch of Islamic Azad University

³ Associate Professor, Department of Wood and Paper Industry, Science and Research Branch of Islamic Azad University

⁴ Associate Professor of Wood Industry, Department of Civil Engineering, Shaid Rajaei Teacher Training University

https://doi.org/10.22092/ijwpr.2015.102671

Abstract

In this study, structural performance of corner joint reinforced by fiber reinforced polymers (FRP) at the area of maximum tension stress was investigated under diagonal tension loading. Therefore 1 to 3 layers of unidirectional woven Glass, Carbon and Kevlar fibers were used and hand lay-up was done by vinyl ester and epoxy resins. Results of load-displacement curve at yield point exhibited capability of the reinforcing layers in preventing joint opening to some extent under load. However, failure was observed at the joint due to picking fibers from wood surface or members fracture near the interface when loading increased. Since the reinforced zones of the joints by FRP show the maximum shear stress, consequently the separation of fibers from wood surfaces increased at these locations. The adhesion of FRP layers to joint surface was not appropriate due to difficult process of layering at right angle of joints followed by probable formation of air bubbles. The results of assessing FRPs reinforcing behaviour indicated that application of vinyl ester in comparison with epoxy as matrix exhibited better performance. In addition, glass and carbon fibers showed better performance than Kevlar fibers as reinforcing agents.

Keywords

Main Subjects

Biology and Wood Protection

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Iranian Journal of Wood and Paper Science Research

Studying the effect of acetylation Beech on interfacial bonding resistance of transparent paint (nitrocellulose lacquer, asid catalyzed lacquer and Half Ppolyester)

References

References

Volume 31, SPRING 1 - Serial Number 54
March 2016
Pages 105-117

Studying the effect of acetylation Beech on interfacial bonding resistance of transparent paint (nitrocellulose lacquer, asid catalyzed lacquer and Half Ppolyester)

References

References

Volume 31, SPRING 1 - Serial Number 54March 2016Pages 105-117

Volume 31, SPRING 1 - Serial Number 54
March 2016
Pages 105-117