The effect of wood particles polyesterification with sorbitol and citric acid on the properties of particleboard produced with the use of PF/pMDI adhesive

IF 2.4 3区农林科学 Q1 FORESTRY

European Journal of Wood and Wood Products Pub Date : 2024-08-01 DOI:10.1007/s00107-024-02124-9

Jakub Kawalerczyk, Marcin Kuliński, Andrea Majlingová, Dorota Dukarska, Radosław Mirski

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Abstract

This study investigated the effect of pine particle polyesterification with the mixture of sorbitol and citric acid (SCA) on the properties of particleboard bonded with the PF/pMDI hybrid resin. The use of SCA with a concentration of 35% contributed to improvement in the internal bond of the particleboards, their water resistance and dimensional stability. However, lowering the concentration to 25% resulted in a deterioration of the properties of produced materials. The effect of different loadings of pMDI in the PF/pMDI resin (0%, 5%, 15%, 25%) was also investigated and the outcomes showed a positive effect of the share of 15% and 25%. Furthermore, boards made of treated particles were characterized by slightly better flammable properties (lower mass loss, flashing point temperature and delayed ignition), and the visibility of the effect increased with the increase in the concentration of the impregnate. The results also indicate that the introduction of pMDI may also influence the ignition of the board.

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用山梨醇和柠檬酸聚酯木粒对使用 PF/pMDI 粘合剂生产的刨花板性能的影响

本研究调查了松木颗粒聚酯化与山梨醇和柠檬酸混合物（SCA）对用 PF/pMDI 混合树脂粘合的刨花板性能的影响。使用浓度为 35% 的 SCA 有助于改善刨花板的内部粘结性、耐水性和尺寸稳定性。然而，将浓度降至 25% 会导致所生产材料的性能下降。还研究了 PF/pMDI 树脂中不同 pMDI 含量（0%、5%、15%、25%）的影响，结果表明 15% 和 25% 的含量具有积极影响。此外，用经过处理的颗粒制成的木板的可燃性能略有改善（质量损失、闪点温度和延迟着火均较低），而且随着浸渍剂浓度的增加，效果也越来越明显。结果还表明，引入 pMDI 也会影响木板的点燃。

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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.