======
Title: 
EN204 data for "Study of the Curing Process of Tannin- and Lignin-Based Adhesive Using an Automated Bonding Evaluation System"

================
Version history:
================
1.0 // 2026-03-27 (Current) DOI: 10.5281/zenodo.19253004

========
Authors:
======== 
-Maks Brus, Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, Ljubljana, 1000, Slovenia, ORCID: 0009-0009-7046-8438
-Jernej Dolenc, Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, Ljubljana, 1000, Slovenia
-Aleš Serženta, Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, Ljubljana, 1000, Slovenia
-Milan Šernek, Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, Ljubljana, 1000, Slovenia, ORCID: 0000-0002-9365-6126

========
Contact:
========
maks.brus@bf.uni-lj.si

===========================
Adhesive naming convention:
===========================
--------------------------------------------------------------------------------------------------
Adhesive mixture			Designation	Formulation		Ratios
--------------------------------------------------------------------------------------------------
Tannin-hexamine				T-H		H2O : T : H		60 : 40 : 2,4
Tannin-hexamethylenediamine		T-HMDA		H2O : T : HMDA		60 : 40 : 3
Tannin-hexamine-hexamethylenediamine	T-H-HMDA	H2O : T : H : HMDA	60 : 40 : 2,4 : 3
Lignin-hexamine				L-H		H2O : L : H		60 : 40 : 2,4
Lignin-hexamethylenediamine		L-HMDA		H2O : L : HMDA		60 : 40 : 3
Lignin-hexamine-hexamethylenediamine	L-H-HMDA	H2O : L : H : HMDA	60 : 40 : 2,4 : 3
--------------------------------------------------------------------------------------------------

================
Data collection:
================
Test specimens for shear testing were made from solid beech wood. The lamellae had dimensions of 620 mm × 130 mm × 5 mm (length × width × thickness) and were planed to the final thickness on the same day to ensure an active surface. The adhesive mixtures were thoroughly mixed before application. The adhesive was applied at a spread rate of 200 g/m² using a roller and a spatula. Half of the adhesive was applied to one lamella and the other half to the second lamella. Pressing was carried out at 175 °C and 200 °C at a pressure of 1.2 MPa, and the pressing times were determined based on ABES measurements. For L‑HMDA, the pressing time was 15 min at 200 °C, while for T‑HMDA it was 15 min at both 175 °C and 200 °C. For each temperature–time combination, 20 specimens were prepared from a single glued assembly. The geometry of the specimens is described in EN 205:2016 and in previous literature (Saražin et al., 2020; Sitar et al., 2023).
According to EN 12765:2016, the specimens were conditioned for classes C1 and C2. The C1 specimens were conditioned for 7 days in a standard atmosphere (20 °C and 65% RH). The C2 specimens were first conditioned for 7 days in a standard atmosphere, followed by 24 hours in water at 20 ± 5 °C. Before testing, surface water was removed from the C2 specimens with a cloth.
Shear strength measurements were carried out on a universal testing machine Zwick Z05 (Zwick Roell, Ulm, Germany) according to the EN 205:2016 standard. The maximum force (F), the overlap length (l), and the overlap width (b) were measured. The percentage of wood failure was visually assessed (0, 25, 50, 75, and 100)%, where 100% signifies complete wood failure and 0% complete adhesive failure. Shear strength was calculated in the same way as in ABES.

================
Data processing:
================
None (Raw data).

=======================
File naming convention:
=======================
example: EN205_L-HMDA_200_C1.csv - EN205 measurements for L-H-HMDA at 200 °C tested according to C1 class

===============
Data structure:
===============
-Files are in comma delimited (,) .csv
-Decimal separator is dot (.)
-First row represents the variable name 
-Second row represents the variable unit.

========
Licence:
========
CC-BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode

==============
Related works:
==============
DOI will be added upon publication of the associated article.






