人工老化对热处理云杉胶接性能的影响

IF 0.7 4区农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD

Drvna Industrija Pub Date : 2021-11-24 DOI:10.5552/drvind.2021.2044

M. Kariž, Manja Kitek Kuzman, M. Šernek

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引用次数: 1

摘要

研究了人工老化对粘结热处理云杉片材的影响。采用不同热改性程度的热处理云杉片材与PVAc和MUF粘结，在雨水、紫外线和红外辐射下进行500次人工风化循环。测量了外露表面颜色变化、重量变化、粘结接头分层情况及粘结强度。人工风化导致粘结接头开裂和分层，降低了两种胶粘剂的粘结强度。结果表明:PVAc胶粘剂的分层率高于MUF，但随木材热处理温度的升高，两种胶粘剂的分层率均升高;人工风化后试样裸露侧粘结体的抗剪强度低于整个试样的平均强度。

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Effect of Artificial Ageing on Adhesive Bonds from Heat Treated Spruce

The influence of artificial ageing on bonded heat-treated spruce lamellas was investigated. Heat-treated spruce lamellas with different degrees of thermal modification were bonded with PVAc and MUF and then exposed to 500 artificial weathering cycles, combined with rain, UV and IR radiation. The colour change of the exposed surface, weight change, delamination of the bonded joints and adhesive bond strength were measured. Artificial weathering caused cracking and delamination of the bonded joints and reduced the bond strength of both adhesives. The results show that delamination was higher for PVAc adhesive than MUF, but increased for both adhesives with the temperature of heat treatment of wood. The shear strength of bonds on the exposed side of the samples after the artificial weathering was lower than the average strength of the whole sample.

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来源期刊

Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.