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热塑性聚氨酯改性沥青结合料短期抗老化性能研究

Investigation on the Short-Term Aging-Resistance of Thermoplastic Polyurethane-Modified Asphalt Binders.

作者信息

Yu Ruien, Zhu Xijing, Zhang Maorong, Fang Changqing

机构信息

School of Mechanical Engineering, North University of China, Taiyuan 030051, China.

Shanxi Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, China.

出版信息

Polymers (Basel). 2018 Oct 25;10(11):1189. doi: 10.3390/polym10111189.

DOI:10.3390/polym10111189
PMID:30961114
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6290641/
Abstract

In this reported work, thermoplastic polyurethane (TPU) was used as a reactive polymer modifying agent to prepare a modified-asphalt, using a high-speed shearing method. Physical performance tests of the TPU-modified asphalt were conducted before and after short-term aging, and the aging resistance was examined by the change in materials properties. In addition, low-temperature rheological properties, thermal properties, the high-temperature storage stability, and the aging mechanism of TPU-modified asphalt were also investigated. The results showed that the addition of TPU improved the aging resistance of base asphalt, which was evidenced by the increased penetration ratio and decreased softening point of the asphalt, after aging. Similarly, Fourier Transform infrared (FTIR) spectroscopy results verified that TPU improved the asphalt aging resistance. It was found that the TPU functional groups played a role in improving thermal properties, high-temperature storage stability, and in the dispersion of modified asphalt.

摘要

在本报告的工作中，热塑性聚氨酯（TPU）被用作反应性聚合物改性剂，采用高速剪切法制备改性沥青。对TPU改性沥青在短期老化前后进行了物理性能测试，并通过材料性能的变化来考察其抗老化性能。此外，还研究了TPU改性沥青的低温流变性能、热性能、高温储存稳定性及老化机理。结果表明，添加TPU提高了基质沥青的抗老化性能，老化后沥青的针入度比增加、软化点降低证明了这一点。同样，傅里叶变换红外光谱（FTIR）结果证实TPU提高了沥青的抗老化性能。发现TPU官能团在改善热性能、高温储存稳定性以及改性沥青的分散方面发挥了作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/37e10ac3f83c/polymers-10-01189-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/a7a82ed49005/polymers-10-01189-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/fdcbcbc8890f/polymers-10-01189-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/e38b07d554ac/polymers-10-01189-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/08b3f6b71caf/polymers-10-01189-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/19e8d4823fec/polymers-10-01189-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/368d680e3e61/polymers-10-01189-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/dcc49963bc13/polymers-10-01189-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/89bb842907ff/polymers-10-01189-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/522b1486cd0c/polymers-10-01189-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/37e10ac3f83c/polymers-10-01189-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/a7a82ed49005/polymers-10-01189-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/fdcbcbc8890f/polymers-10-01189-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/e38b07d554ac/polymers-10-01189-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/08b3f6b71caf/polymers-10-01189-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/19e8d4823fec/polymers-10-01189-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/368d680e3e61/polymers-10-01189-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/dcc49963bc13/polymers-10-01189-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/89bb842907ff/polymers-10-01189-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/522b1486cd0c/polymers-10-01189-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd09/6290641/37e10ac3f83c/polymers-10-01189-g010.jpg

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Adv Colloid Interface Sci. 2015 Oct;224:72-112. doi: 10.1016/j.cis.2015.07.010. Epub 2015 Aug 1.
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Analysis of styrene-butadiene-styrene polymer modified bitumen using fluorescent microscopy and conventional test methods.使用荧光显微镜和传统测试方法对苯乙烯-丁二烯-苯乙烯聚合物改性沥青进行分析。
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