Influence of Temperature on the Strength of Bonded Joints

Abstract

The objective of this study was to assess the influence of varying temperature on the strength characteristics of joints bonded using three types of one-component PVAc adhesives (i.e., Rakoll Express D3, Titebond II Premium, and Rhenocoll 3W, 4B Plus) that belong to the group of thermoplastic wood adhesives intended for non-construction bonding applications. The measuring procedure was a transverse tensile test for estimation of joint strength. As documented by the test results, a higher joint strength achieved at a higher temperature was achieved again after a gradual increase in the joint temperature from 20 °C to 140 °C and subsequent cooling to the starting temperature. After cooling the joint to the starting temperature, all tested adhesives complied with the minimum strength, namely 10 MPa. The results obtained in this study indicated that the resistance and thus the strength of joints bonded using contemporary PVAc adhesives increases with time.

Formulation and Characterization of Adhesive Produced From Polystyrene Waste Using Response Surface Optimization

“…Adhesive pH is critical in ascertaining its longevity and handling processes [29,30,31]. It's determined the applicability of adhesive as curing depends of pH value.…”

A Modified Method for Shear Strength Measurement of Adhesive Bonds in Solid Wood

“…In this regard, adhesives have several chemical and mechanical characteristics that need to be considered, but the shear strength is one of the most important factors. In fact, the shear strength, as one of the most common interfacial stresses under service conditions (Pizzo et al 2003;Serrano 2004), is commonly used as the reference parameter to compare the bond strength of different adhesives (Vick and Okkonen 1998;Örs et al 2000;Serrano 2004;Burdurlu et al 2006;Konnerth et al 2006;Raftery et al 2009;Lu et al 2013;Bomba et al 2014;Derikvand et al 2014;Li et al 2015;Šedivka et al 2015).…”

Impact of melamine and its derivatives on the properties of poly(vinyl acetate)-based composite wood adhesive

“…The research conducted on PVAc adhesives focused on improving thermal or mechanical performance, such as shear strength and thermal stability. It is mainly realized by copolymerization of vinyl acetate with different monomers or blending it with other adhesives or hardeners Chiozzaa and Pizzo 2016;Šedivka et al 2015). This can also be achieved by the addition of suitable additives, for instance nano-clay (Moya et al 2015), cellulose nanofibers (Chaabouni and Boufi 2017), nano-TiO 2 and nano-SiO 2 (Bardak et al 2016).…”