An investigation of the bond quality in the production of bamboo scrimber-rubberwood cross laminated timber

IF 2.5 3区农林科学 Q1 FORESTRY

European Journal of Wood and Wood Products Pub Date : 2025-06-10 DOI:10.1007/s00107-025-02277-1

Benhao Miao, Xiaojuan Jia, Yan Xiao, Meng Gong, Peixing Wei, Brad Jianhe Wang, Suyong Huang

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引用次数: 0

Abstract

In this study, a brand new bamboo scrimber–rubberwood CLT (BRCLT) has been proposed, along with one-component polyurethane (PUR) adhesive. Three processing factors were considered, pressure (1.5 MPa and 2.0 MPa), glue spread rate (150 g m⁻² and 200 g m⁻²), and application of a water-based surface modifier. The bonding performance of BRCLT was examined by conducting block shear, delamination, short-span flatwise shear and four-point bending tests. It was found that (1) the optimal gluing process for fabricating BRCLT was a pressure of 2 MPa, a glue spread rate of 150 g/m⁻², and the application of a water-based surface modifier. (2) The modifier significantly reduced the delamination rate of BRCLT. (3) BRCLT produced using the optimal bonding parameters can meet V1-grade CLT in terms of maximum shear stress, modulus of rupture (MOR), and modulus of elasticity (MOE), as stipulated in the American standard ANSI/APA PRG 320, suggesting BRCLT had a great potential to be a new member of CLT family.

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竹木胶木交叉层合材生产中粘结质量的研究

在本研究中，提出了一种全新的竹纤维橡胶木CLT (BRCLT)，以及单组分聚氨酯（PUR）胶粘剂。考察了压力（1.5 MPa和2.0 MPa）、涂胶速度（150 g m−2和200 g m−2）和水基表面改性剂的使用三个工艺因素。通过传导块剪、分层、短跨平剪和四点弯曲试验，考察了BRCLT的粘结性能。结果表明：(1)制备BRCLT的最佳涂胶工艺为：涂胶压力为2 MPa，涂胶速率为150 g/m−2，使用水基表面改性剂；(2)改性剂显著降低BRCLT的分层率。(3)采用最佳粘结参数制备的BRCLT在最大剪切应力、断裂模量（MOR）和弹性模量（MOE）方面均满足美国标准ANSI/APA PRG 320规定的v1级CLT，具有成为CLT家族新成员的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

European Journal of Wood and Wood Products 工程技术-材料科学：纸与木材

CiteScore

5.40

自引率

3.80%

发文量

124

审稿时长

6.0 months

期刊介绍： European Journal of Wood and Wood Products reports on original research and new developments in the field of wood and wood products and their biological, chemical, physical as well as mechanical and technological properties, processes and uses. Subjects range from roundwood to wood based products, composite materials and structural applications, with related jointing techniques. Moreover, it deals with wood as a chemical raw material, source of energy as well as with inter-disciplinary aspects of environmental assessment and international markets. European Journal of Wood and Wood Products aims at promoting international scientific communication and transfer of new technologies from research into practice.