Investigations into the Influence of Temperature on the Tensile Shear Strength of Various Adhesives-Reference-Cited by-同舟云学术

Investigations into the Influence of Temperature on the Tensile Shear Strength of Various Adhesives

Published:2023-09-12 Issue:18 Volume:16 Page:6173
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Bernaczyk Arkadiusz¹,Wagenführ André²,Terfloth Christian¹,Lincke Jörg¹,Krystofiak Tomasz³,Niemz Peter⁴⁵^ORCID

Affiliation:

1. Jowat SE, 32758 Detmold, Germany

2. Institute of Natural Materials Technology, Technische Universität Dresden, 01062 Dresden, Germany

3. Department of Wood Science and Thermal Techniques, Poznań University of Life Sciences, 60-627 Poznan, Poland

4. Institute for Building Materials, ETH Zurich, 971 87 Lulea, Sweden

5. Department of Engineering Sciences and Mathematics, Lulea University of Technology, 971 87 Lulea, Sweden

Abstract

The temperature resistance of glued timber, which is crucial for glued wood construction, represents a significant assessment criterion. To gain insights into this aspect, this study utilized methods such as a shear strength test in accordance with EN 302-1:2013-06 under thermal loading (from 20 °C to 200 °C), and Differential Scanning Calorimetry (DSC) to determine the glass transition temperature (Tg). An increase in thermal load resulted in a decrease in shear strength and an increase in wood breakage. A hierarchy of adhesive groups was established based on strength performance and wood failure percentage (WFP) at 200 °C. Thermoset adhesives (MF: Melamine Formaldehyde, PRF: Phenol Resorcinol Formaldehyde) led the ranking, followed by elastomer adhesives (1C-PUR: One-Component Polyurethane, EPI: Emulsion Polymer Isocyanate), with thermoplastic adhesive (PVAc: Polyvinyl Acetate) last. Thermoset adhesives further cured under heat. PUR adhesives exhibited higher strength performance at 150 °C and lower temperatures.

Publisher

MDPI AG

Subject

General Materials Science

Link

https://www.mdpi.com/1996-1944/16/18/6173/pdf

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