白杨（POPULUS TREMULA L.）对叠层木材（CLT）的适应性

IF 0.9 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD

Wood Research Pub Date : 2023-06-28 DOI:10.37763/wr.1336-4561/68.3.502520

Sumanta Das, Miroslav Gašparík, A. Sethy, P. Niemz, R. Lagaňa, Tomáš Kytka, M. Sviták, Gourav Kamboj

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引用次数: 1

摘要

交叉层压木材（CLT）CLT是建筑和高承载结构应用的优秀材料，但其制造和使用仅限于软木。采用单组分聚氨酯（1C-PUR）和三聚氰胺胶粘剂（ME）两种胶粘剂对白杨（Populus tremula L）木材生产CLT的适宜性进行了评价。评估了吸水性（WA）、厚度膨胀性（TS）、分层等物理性能以及粘结剪切强度、弯曲弹性模量、弯曲强度和滚动剪切强度等机械性能，以检查其适用性。与ME粘结CLT相比，1C-PUR粘结CLT面板显示出优异的物理特性，70%通过了分层测试。用1C-PUR粘合剂粘合的CLT面板也比ME粘合的CLT具有更好的机械性能。CLT面板经历了三种类型的弯曲失效：滚动剪切、分层和拉伸。Aspen CLT具有与传统软木相似或更高的机械性能，适合CLT的制造。

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SUITABILITY OF ASPEN (POPULUS TREMULA L.) FOR CROSS-LAMINATED TIMBER (CLT)

Cross-laminated timber (CLT) CLT is an excellent material for building and high load-bearing structural applications, but its fabrication and use are limited to softwood only. The suitability of aspen (Populus tremula L) wood for manufacturing CLT was assessed by using two adhesives, one-component polyurethane (1C-PUR) and melamine adhesive (ME). Physical properties like water absorption (WA), thickness swelling (TS), delamination, and mechanical properties like bond shear strength, bending modulus of elasticity, bending strength, and rolling shear strength were evaluated to examine its suitability. Compared to ME-bonded CLT, 1C-PUR bonded CLT panels displayed superior physical characteristics, with 70% passing the delamination test. CLT panels bonded with 1C-PUR adhesive also have better mechanical properties than ME-bonded CLT. CLT panels experienced three types of bending failure: rolling shear, delamination, and tension. Aspen CLT has similar or higher mechanical properties than traditional softwoods, making it suitable for CLT manufacturing.

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来源期刊

Wood Research 工程技术-材料科学：纸与木材

CiteScore

2.40

自引率

15.40%

发文量

审稿时长

5.4 months

期刊介绍： Wood Research publishes original papers aimed at recent advances in all branches of wood science (biology, chemistry, wood physics and mechanics, mechanical and chemical processing etc.). Submission of the manuscript implies that it has not been published before and it is not under consideration for publication elsewhere.