Evaluation of VOC emission and flexural properties of jute fiber reinforced waterborne acrylic resin composites: The impact mechanism of hydrothermal aging

IF 5.6 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2024-11-16 DOI:10.1016/j.indcrop.2024.119969

Suwen Li , Chunyue Fang , Donghui Zhang , Xiaoyuan Pei , Chunhong Wang , Ruosi Yan , Fei Yu , Guoli Pan

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引用次数: 0

Abstract

In order to reveal the effect mechanism of hydrothermal aging on jute fiber (JF)-reinforced waterborne acrylic resin (WAR) composites and broaden the application of JF in the field of composites, JF/WAR composites were prepared in this paper to explore the impact mechanism of hydrothermal aging on the flexural properties and volatile organic compound (VOC) release of composites. The results showed that the atomic kinetic energy increased with increasing temperature at 25℃, 40℃ and 60℃, and the diffusion coefficient increased by 476.88 % at 60℃. The weight loss rates were 1.53 %, 2.71 %, and 5.07 %, respectively. The weakening of the C-O peaks, O-H peaks as well as CO proved the degradation of JF and WAR. The flexural strength of the samples decreased to 63.43 MPa, 59.87 MPa, and 42.88 MPa with increasing temperature at 25℃, 40℃ and 60℃, respectively, and the flexural modulus was more sensitive to hydrothermal aging. Under short-term hydrothermal aging conditions, the composites all complied with Fick law. Water molecules diffuse, adsorb and dissolve hydrophilic VOC molecules in the pores of the composite materials. Non-Fick diffusion behaviors occurred under long-term hydrothermal aging conditions, and serious damage occurred at the interface of the fiber matrix, with fiber breakage as the main damage mode, and the transmission resistance of VOC will decrease after 1440 mins hydrothermal aging, and the release of VOC will increase significantly.

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黄麻纤维增强水性丙烯酸树脂复合材料的挥发性有机化合物排放和弯曲性能评估水热老化的影响机理

为了揭示水热老化对黄麻纤维（JF）增强水性丙烯酸树脂（WAR）复合材料的影响机理，拓宽 JF 在复合材料领域的应用，本文制备了 JF/WAR 复合材料，探讨了水热老化对复合材料弯曲性能和挥发性有机化合物（VOC）释放的影响机理。结果表明，在 25℃、40℃ 和 60℃时，原子动能随温度升高而增加，60℃时扩散系数增加了 476.88%。重量损失率分别为 1.53 %、2.71 % 和 5.07 %。C-O 峰、O-H 峰和 CO 峰的减弱证明了 JF 和 WAR 的降解。在 25℃、40℃和 60℃条件下，随着温度的升高，样品的抗折强度分别降低到 63.43 MPa、59.87 MPa 和 42.88 MPa，抗折模量对水热老化更为敏感。在短期水热老化条件下，复合材料均符合菲克定律。水分子在复合材料孔隙中扩散、吸附并溶解亲水性挥发性有机化合物分子。在长期水热老化条件下，出现了非 Fick 扩散行为，纤维基体界面出现严重破坏，纤维断裂是主要的破坏方式，水热老化 1440 分钟后，VOC 的透射阻力下降，VOC 的释放量显著增加。

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

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.