Influence of False Heartwood of European Beech (Fagus sylvatica L.) on Tensile Shear Strength of Lap Joints

被引：0

作者：

Prochazka, Jiri ^{[1
]}

Podlena, Milan ^{[2
]}

Tippner, Jan ^{[1
]}

Vanerek, Jan ^{[3
]}

Boehm, Martin ^{[2
]}

机构：

[1] Mendel Univ Brno, Fac Forestry & Wood Technol, Dept Wood Sci & Technol, Zemedelska 3, Brno 61300, Czech Republic

[2] Czech Tech Univ, Fac Civil Engn, Dept Mat Engn & Chem, Thakurova 7, Prague 6, Czech Republic

[3] Brno Univ Technol, Inst Technol Bldg Mat & Components, Fac Civil Engn, Veveri 331-95, Brno 60200, Czech Republic

来源：

BIORESOURCES | 2024年 / 19卷 / 04期

关键词：

Beech wood; False heartwood; Lap joints; Shear strength; Polyurethane adhesive; Phenol-; formaldehyde; Urea-formaldehyde; WOUND-ASSOCIATED WOOD; PHENOLIC EXTRACTIVES; RED HEARTWOOD; BEHAVIOR; PH; YIELD;

D O I：

10.15376/biores.19.4.8354-8367

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The aim of this research was to investigate the effect of false heartwood of beech wood on the shear strength of glued joints for thermoplastic and reactoplastic adhesives for plywood production. The tensile shear strength of the lap joints was tested for four different types of adhesives according to EN 204 (2016) and EN 205 (2016). The results showed that for lap joints assembled with polyvinyl acetate, urea-formaldehyde, and phenolformaldehyde adhesives, there was no significant difference in shear strength between beech sapwood and false heartwood. However, for joints bonded with polyurethane adhesive, the shear strength was lower for heartwood compared to the reference sapwood, particularly after exposure to water immersion.

引用

页码：8354 / 8367

页数：14

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