The effect of urea-formaldehyde adhesive modification with propylamine on the properties of manufactured plywood

IF 2.9 4区材料科学 Q2 ENGINEERING, CHEMICAL

Journal of Adhesion Pub Date : 2022-10-12 DOI:10.1080/00218464.2022.2134012

Jakub Kawalerczyk, Joanna Walkiewicz, M. Woźniak, D. Dziurka, R. Mirski

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引用次数: 4

Abstract

ABSTRACT The aim of the study was to investigate the effect of propylamine addition to urea-formaldehyde resin on the properties of resultant plywood. The research consisted in investigating the properties of both liquid and cured resins, as well as the produced plywood. Studies have shown that the incorporation of propylamine adversely affected reactivity of the adhesive mixtures by increasing their pH. The evaluation of adhesive chemical structure with FTIR spectroscopy showed some slight changes indicating the reaction of formaldehyde with introduced modifier. The addition of propylamine contributed to the considerable reduction of free formaldehyde contained in the cured adhesive. Furthermore, the propylamine was also found to work effectively as a formaldehyde scavenger by significantly reducing the hazardous emission from plywood. However, based on the results of bonding quality, delamination, bending strength and modulus of elasticity it was found that application of propylamine resulted in a noticeable deterioration of plywood properties. Therefore, the amount of introduced modifier should not exceed 1% of solid UF resin.

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丙胺改性脲醛胶粘剂对成品胶合板性能的影响

摘要研究了在脲醛树脂中添加丙胺对胶合板性能的影响。研究包括调查液体树脂和固化树脂以及生产的胶合板的性能。研究表明，丙胺的加入通过增加粘合剂混合物的pH值对其反应性产生了不利影响。用FTIR光谱评估粘合剂的化学结构显示出一些轻微的变化，表明甲醛与引入的改性剂发生了反应。丙胺的加入有助于显著减少固化粘合剂中所含的游离甲醛。此外，丙胺还被发现可以有效地作为甲醛清除剂，显著减少胶合板的有害排放。然而，根据粘合质量、分层、弯曲强度和弹性模量的结果，发现丙胺的应用导致胶合板性能的显著恶化。因此，改性剂的引入量不应超过固体UF树脂的1%。

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来源期刊

Journal of Adhesion 工程技术-材料科学：综合

CiteScore

5.30

自引率

9.10%

发文量

审稿时长

1 months

期刊介绍： The Journal of Adhesion is dedicated to perpetuating understanding of the phenomenon of adhesion and its practical applications. The art of adhesion is maturing into a science that requires a broad, coordinated interdisciplinary effort to help illuminate its complex nature and numerous manifestations.