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紫外线老化对LDH改性沥青流变学和化学性质的影响

Effect of Ultraviolet Aging on Rheology and Chemistry of LDH-Modified Bitumen.

作者信息

Liu Xing, Wu Shaopeng, Liu Gang, Li Liping

机构信息

State Key laboratory of Silicate Materials of Architectures, Wuhan University of Technology, Wuhan 430070, China.

出版信息

Materials (Basel). 2015 Aug 12;8(8):5238-5249. doi: 10.3390/ma8085238.

DOI:10.3390/ma8085238
PMID:28793501
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5455472/
Abstract

Layered double hydroxides (LDHs) are an ultravioletlight (UV)-resistant material. In this study, two types of LDHs (Mg-Al-LDHs and Zn-Al-LDHs) were applied to modify bitumen by melt-blending. The effect of ultraviolet aging on the rheology and chemistry of LDH-modified bitumen was studied by means of dynamic shear rheometer (DSR), thin-layer chromatography with flame ionization detection (TLC-FID), Fourier transform infrared spectroscopy (FTIR), and Ultraviolet-Visible (UV-Vis) spectrophotometry to reveal the mechanisms of action for LDHs and bitumen. The results showed that within the UV spectra (220-400 nm), the reflectance of Zn-Al-LDHs was larger than that of Mg-Al-LDHs. These two LDHs have different influences on the performance of bitumen. Mg-Al-LDHs had a more obvious influence on the physical and dynamic rheological properties of bitumen than Zn-Al-LDHs. Zn-Al-LDHs improved the UV-aging resistance of bitumen more. The reason can be that the reflectance of the Zn-Al-LDHs to the UV light is larger than that of the Mg-Al-LDHs. The Zn-Al-LDH-modified bitumen had more potential to improve the UV-aging resistance during the service life of asphalt pavement.

摘要

层状双氢氧化物（LDHs）是一种抗紫外线（UV）材料。在本研究中，通过熔融共混法使用两种类型的LDHs（Mg-Al-LDHs和Zn-Al-LDHs）对沥青进行改性。借助动态剪切流变仪（DSR）、火焰离子化检测薄层色谱法（TLC-FID）、傅里叶变换红外光谱法（FTIR）和紫外可见（UV-Vis）分光光度法研究了紫外线老化对LDH改性沥青流变学和化学性质的影响，以揭示LDHs与沥青的作用机理。结果表明，在紫外光谱（220 - 400 nm）范围内，Zn-Al-LDHs的反射率大于Mg-Al-LDHs。这两种LDHs对沥青性能有不同影响。Mg-Al-LDHs对沥青的物理和动态流变性能的影响比Zn-Al-LDHs更明显。Zn-Al-LDHs对沥青抗紫外线老化性能的改善更大。原因可能是Zn-Al-LDHs对紫外线的反射率大于Mg-Al-LDHs。Zn-Al-LDHs改性沥青在沥青路面使用寿命期间具有更大的改善抗紫外线老化性能的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/b83e52562aae/materials-08-05238-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/4e6fb9a27897/materials-08-05238-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/aa0abc508885/materials-08-05238-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/241554d80a07/materials-08-05238-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/29b9044e6b8f/materials-08-05238-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/b83e52562aae/materials-08-05238-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/4e6fb9a27897/materials-08-05238-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/aa0abc508885/materials-08-05238-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/241554d80a07/materials-08-05238-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/29b9044e6b8f/materials-08-05238-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e17/5455472/b83e52562aae/materials-08-05238-g005.jpg

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本文引用的文献

1
The colloidal structure of bitumen: consequences on the rheology and on the mechanisms of bitumen modification.沥青的胶体结构：对流变学及沥青改性机理的影响
Adv Colloid Interface Sci. 2009 Jan 30;145(1-2):42-82. doi: 10.1016/j.cis.2008.08.011. Epub 2008 Sep 9.
二价金属对M/MgAl层状双氢氧化物紫外屏蔽性能的影响
ACS Omega. 2019 Jun 11;4(6):10151-10159. doi: 10.1021/acsomega.9b00721. eCollection 2019 Jun 30.
4
The Effect of UV Irradiation on the Chemical Structure, Mechanical and Self-Healing Properties of Asphalt Mixture.紫外线辐射对沥青混合料化学结构、力学性能及自愈合性能的影响
Materials (Basel). 2019 Jul 30;12(15):2424. doi: 10.3390/ma12152424.
5
Aging Mechanism and Properties of SBS Modified Bitumen under Complex Environmental Conditions.复杂环境条件下SBS改性沥青的老化机理与性能
Materials (Basel). 2019 Apr 11;12(7):1189. doi: 10.3390/ma12071189.
6
Investigation of the Effect of Induction Heating on Asphalt Binder Aging in Steel Fibers Modified Asphalt Concrete.感应加热对钢纤维改性沥青混凝土中沥青结合料老化影响的研究
Materials (Basel). 2019 Apr 1;12(7):1067. doi: 10.3390/ma12071067.
7
Flame-Retardant Mechanism of Layered Double Hydroxides in Asphalt Binder.层状双氢氧化物在沥青结合料中的阻燃机理
Materials (Basel). 2019 Mar 8;12(5):801. doi: 10.3390/ma12050801.
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Influence of Overheating Phenomenon on Bitumen and Asphalt Mixture Properties.过热现象对沥青及沥青混合料性能的影响。
Materials (Basel). 2019 Feb 18;12(4):610. doi: 10.3390/ma12040610.
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Investigation of Ageing in Bitumen Using Fluorescence Spectrum.基于荧光光谱的沥青老化研究
Materials (Basel). 2018 Jul 31;11(8):1325. doi: 10.3390/ma11081325.
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Influence of Water Solute Exposure on the Chemical Evolution and Rheological Properties of Asphalt.水溶物暴露对沥青化学演化及流变特性的影响
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