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酯化废食用油再生剂与再生沥青性能研究

Investigation on the Performances of Esterified Waste Cooking Oil Rejuvenator and Recycled Asphalt.

作者信息

Wang Junhui, Ye Qunshan, Fan Lingyi, Xie Cheng, Liu Haobin

机构信息

School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China.

Guangxi Beitou Transportation Maintenance Technology Group Co., Ltd., Nanning 530201, China.

出版信息

Materials (Basel). 2024 Sep 26;17(19):4725. doi: 10.3390/ma17194725.

DOI:10.3390/ma17194725
PMID:39410296
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11478170/
Abstract

Waste cooking oil (WCO) recycled asphalt is facing issues regarding insufficient thermal oxidation stability and aging resistance. In this research, glycerol esterification was adopted to pretreat WCO, and the consequences of this treatment on the aging resistance and thermal stability of WCO were analyzed. The impacts of varying levels of esterification of WCO on the high-temperature, low-temperature performances, fatigue properties, and aging resistance of recycled asphalt were investigated. Furthermore, the mechanisms of regeneration and the anti-aging of deeply esterified WCO recycled asphalt were revealed by Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) tests. The results indicated that variations in the physical properties of WCO during the aging process were reduced, and its aging resistance was improved following glycerol esterification therapy. The initial thermal decomposition temperature was increased by approximately 115 °C, which resulted in the enhancement of thermal stability significantly. Recycled asphalt obtained from deeply esterified WCO exhibited superior high-temperature, low-temperature performances, and fatigue properties. Moreover, the thermal oxidation stability and aging resistance of recycled asphalt with deep-esterified WCO could be promoted by reducing the oxidation and volatilization of light components during the aging process, with the complex modulus ageing resistance index decreasing by 13.27% and the phase angle ageing resistance index increasing by 14.71%.

摘要

废食用油（WCO）再生沥青面临热氧化稳定性和抗老化性不足的问题。本研究采用甘油酯化法对WCO进行预处理，并分析了该处理对WCO抗老化性和热稳定性的影响。研究了不同酯化程度的WCO对再生沥青高温、低温性能、疲劳性能和抗老化性的影响。此外，通过傅里叶变换红外光谱（FTIR）和凝胶渗透色谱（GPC）测试揭示了深度酯化WCO再生沥青的再生和抗老化机理。结果表明，甘油酯化处理后，WCO在老化过程中的物理性能变化减小，抗老化性能提高。初始热分解温度提高了约115℃，显著提高了热稳定性。深度酯化WCO制备的再生沥青具有优异的高温、低温性能和疲劳性能。此外，深度酯化WCO再生沥青的热氧化稳定性和抗老化性可通过减少老化过程中轻质组分的氧化和挥发来提高，复数模量抗老化指数降低13.27%，相位角抗老化指数提高14.71%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/a29b702fdfdb/materials-17-04725-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/7b96d32639d6/materials-17-04725-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/b98366dbfdc4/materials-17-04725-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/542721f6f0ba/materials-17-04725-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/4002d287950b/materials-17-04725-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/a29b702fdfdb/materials-17-04725-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/059f59c99c4d/materials-17-04725-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/24093750559e/materials-17-04725-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/214508c04ff1/materials-17-04725-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/6b78ddf6060c/materials-17-04725-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/33ec6e95c65b/materials-17-04725-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/7b96d32639d6/materials-17-04725-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/b98366dbfdc4/materials-17-04725-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/542721f6f0ba/materials-17-04725-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/b8e2b609c9c0/materials-17-04725-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/831ba47a6415/materials-17-04725-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d25c/11478170/a29b702fdfdb/materials-17-04725-g012.jpg

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本文引用的文献

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Investigation of the possibility of using waste cooking oil as a rejuvenating agent for aged bitumen.研究废烹饪油作为老化沥青再生剂的可能性。
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