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废弃低密度聚乙烯/增塑剂邻苯二甲酸二异壬酯对沥青结合料性能的影响

The Effect of Waste Low-Density Polyethylene/Plasticizer Diisononyl Phthalate on the Performance of Asphalt Binder.

作者信息

Hu Peng, Shao Xiao, Wang Kun, Jia Haichuan, Chen Long

机构信息

School of Transportation and Civil Engineering, Shandong Jiaotong University, Jinan 250357, China.

出版信息

Materials (Basel). 2025 May 31;18(11):2580. doi: 10.3390/ma18112580.

DOI:10.3390/ma18112580
PMID:40508575
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12156042/
Abstract

As an aspect of green road construction, the use of waste plastic agricultural film in asphalt pavement not only mitigates environmental pollution but also enhances the mechanical properties of asphalt. However, it has been plagued by problems such as poor low-temperature crack resistance and poor compatibility. To address this problem, this study used waste low-density polyethylene (LDPE), sourced from waste film, and the plasticizer diisononyl phthalate (DINP) to enhance the properties of asphalt. Based on orthogonal tests, rheological property tests, conventional property tests, storage stability tests, fluorescence microscopy (FM), and Fourier transform infrared (FTIR) tests, waste LDPE/plasticizer DINP-modified asphalt samples were evaluated. Orthogonal tests indicated that a modified asphalt optimum preparation process of 30 min and 4500 rpm at 180 °C was beneficial. Conventional and rheological property tests revealed that 4% waste LDPE modified with 2.5% plasticizer DINP represents the optimal combination to effectively enhance the low-temperature rheological properties of asphalt while exerting minimal impact on its high-temperature characteristics. Storage stability and FM analysis indicated that waste LDPE is evenly dispersed in the modified asphalt binder when 3% plasticizer DINP is added. FTIR analysis revealed no change in the absorption peaks after waste LDPE and plasticizer DINP were added to asphalt, indicating that no chemical reactions occurred. Overall, waste LDPE/plasticizer DINP-modified asphalt exhibits excellent rheological properties and storage stability, which are conducive to green road construction and resource utilization.

摘要

作为绿色道路建设的一个方面，在沥青路面中使用废弃塑料农膜不仅能减轻环境污染，还能提高沥青的力学性能。然而，它一直受到低温抗裂性差和相容性差等问题的困扰。为了解决这个问题，本研究使用了来源于废膜的废弃低密度聚乙烯（LDPE）和增塑剂邻苯二甲酸二异壬酯（DINP）来改善沥青性能。基于正交试验、流变性能试验、常规性能试验、储存稳定性试验、荧光显微镜（FM）和傅里叶变换红外（FTIR）试验，对废弃LDPE/增塑剂DINP改性沥青样品进行了评估。正交试验表明，在180℃下30分钟、4500转/分钟的改性沥青最佳制备工艺是有益的。常规和流变性能试验表明，用2.5%增塑剂DINP改性的4%废弃LDPE是有效提高沥青低温流变性能同时对其高温特性影响最小的最佳组合。储存稳定性和FM分析表明，当添加3%增塑剂DINP时，废弃LDPE均匀分散在改性沥青结合料中。FTIR分析表明，将废弃LDPE和增塑剂DINP添加到沥青中后，吸收峰没有变化，表明没有发生化学反应。总体而言，废弃LDPE/增塑剂DINP改性沥青具有优异的流变性能和储存稳定性，有利于绿色道路建设和资源利用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/09eb059ca97a/materials-18-02580-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/720c0cddc595/materials-18-02580-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/09eb059ca97a/materials-18-02580-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/3ae57c089a1f/materials-18-02580-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/c687b87756c5/materials-18-02580-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/31709aec6271/materials-18-02580-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/e8e1eca46d4d/materials-18-02580-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/d20fc3a5b777/materials-18-02580-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/0477154dbb53/materials-18-02580-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/93bf75c5e268/materials-18-02580-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/720c0cddc595/materials-18-02580-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/f454e598c7a7/materials-18-02580-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/81f8cab9d879/materials-18-02580-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/f5951e6fc64f/materials-18-02580-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0aa0/12156042/09eb059ca97a/materials-18-02580-g012.jpg

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