Fire resistance of Scots pine modified with sorbitol, citric acid and fire retardants

IF 2.5 3区农林科学 Q1 FORESTRY

European Journal of Wood and Wood Products Pub Date : 2025-06-13 DOI:10.1007/s00107-025-02282-4

Hüseyin Sivrikaya, Muting Wu, Holger Militz

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引用次数: 0

Abstract

Sorbitol-citric acid (SorCA) modification is an eco-friendly wood treatment that demonstrates promising potential for enhancing dimensional stability and decay resistance of wood material. To improve the fire resistance property of SorCA (1:2; 30%) modified wood, fire retardants (FRs) such as diammonium hydrogen phosphate (DAP) and potassium carbonate (PC) were incorporated into the modification system at a rate of 10% and 15%, respectively. Scots pine wood modified with the combination of SorCA and FRs was subjected to mass loss calorimeter test to evaluate its flame retardancy. In addition, thermogravimetric analysis (TGA) was carried out for determining the thermal behaviour of modified wood at elevated temperatures. Fourier-transform infrared spectroscopy (FTIR) was used to identify the chemical bonds in the modified wood. The FTIR spectrum indicated an intensity enhancement at 1716 cm^− 1, resulting from the bonding with the cell wall or between the reagents. TGA analysis showed that the addition of DAP and PC to the SorCA system enhanced the thermal stability, yielding higher residual mass compared to SorCA alone and the untreated reference. The mass loss calorimeter revealed that SorCA with DAP 15% significantly improved flame retardancy, lowering the peak heat release rate by 65% and total heat release within 600 s by 82% compared to untreated wood. The combination of SorCA with DAP and PC contributed to the char formation and showed potential flame retardancy for modified Scots pine wood.

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山梨糖醇、柠檬酸及阻燃剂改性苏格兰松的耐火性

山梨糖醇-柠檬酸（SorCA）改性是一种环保型木材处理方法，在提高木材材料的尺寸稳定性和抗腐性方面具有很大的潜力。为了提高SorCA（1:2; 30%）改性木材的耐火性能，在改性体系中分别以10%和15%的比例加入磷酸氢二铵（DAP）和碳酸钾（PC）等阻燃剂。用SorCA和FRs复合改性的松木进行了质量损失量热试验，评价了其阻燃性。此外，还进行了热重分析（TGA）来确定改性木材在高温下的热行为。利用傅里叶变换红外光谱（FTIR）对改性木材中的化学键进行了鉴定。FTIR光谱显示，由于与细胞壁或试剂之间的结合，在1716 cm−1处强度增强。TGA分析表明，在SorCA体系中添加DAP和PC增强了热稳定性，与单独的SorCA和未处理的参比相比，产生了更高的残余质量。质量损失量热计显示，与未经处理的木材相比，DAP含量为15%的SorCA显著提高了阻燃性，峰值放热率降低了65%，600 s内的总放热率降低了82%。SorCA与DAP和PC的结合有助于炭化，并对改性的苏格兰松木表现出潜在的阻燃性。

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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.