碳纳米管复合生物油改性沥青流变性能和抗老化性能综合评估  

Comprehensive Evaluation of Rheological Properties and Anti-Aging Performance of Carbon Nanotube Composite Bio-Oil Modified Asphalt

作　　者：林小青 LIN Xiaoqing

机构地区：[1]福建省建筑科学研究院有限责任公司,福建省绿色建筑技术重点实验室,福建福州350108

出　　处：《福建建设科技》2024年第3期62-66,共5页Fujian Construction Science & Technology

摘　　要：本文利用碳纳米管(CNT)来增强生物沥青(废弃餐饮油、秸秆油)的高温性能,弥补生物油沥青高温性能不足的局限性。采用温度扫描、线性振幅扫描、弯曲梁流变等高低温流变试验分析了不同碳纳米管掺量对生物油沥青高温敏感性和低温抗裂能力的影响。最后通过紫外吸收试验和红外光谱试验评价了复合改性沥青的抗紫外老化性能。结果发现,碳纳米管可以显著提高生物油的高温敏感性,并保持出色的流变性能,其中对于秸秆油改善效果更佳;碳纳米管使得生物油沥青具备较强的抗紫外老化能力,让其更能够适用复杂的服役条件。In this paper,carbon nanotubes(CNT)were used to enhance the high-temperature performance of bio-asphalt(waste catering oil,straw oil),aiming to overcome the limitations associated with insufficient high-temperature performance of bio-oil asphalt.The effects of different carbon nanotube contents on the high-temperature sensitivity and low-temperature crack resistance of bio-oil asphalt were analyzed by high and low temperature rheological tests such as temperature scanning,linear amplitude scanning,and bending beam rheology.Finally,the UV resistance and infrared spectroscopy tests were used to evaluate the anti-UV aging performance of the composite modified asphalt.The results showed that carbon nanotubes can significantly improve the high-temperature sensitivity of bio-oil,and it still maintains excellent rheological properties,especially for straw oil;carbon nanotubes make bio-oil asphalt have strong resistance to UV aging,making it more suitable for complex service conditions.

关 键 词：改性沥青 碳纳米材料 生物油 流变性能 抗老化性能 

分 类 号：U414[交通运输工程—道路与铁道工程]