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首页> 外文期刊>Journal of Applied Polymer Science >Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt
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Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

机译：仿生涂层改性纤维的性能掺入苯乙烯丁二烯苯乙烯改性沥青

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摘要

This study reports the effect of polydopamine bionic coating and gamma-methacryloxypropyltrimethoxysilane (KH570) composite modified polyacrylonitrile (PAN) fiber as a secondary modifier on the performance of styrene-butadiene-styrene (SBS) modified asphalt. Dynamic shear rheometer test indicated the complex shear modulu, storage modulus, and loss modulus of modified PAN (KD-PAN) incorporated SBS modified asphalt was increased by 12.4, 20.5, and 11.2%, respectively compared with PAN/SBS modified asphalt. The master curve of G*of fiber/SBS composite modified asphalt shows that the deformation resistance of KD-PAN/SBS modified asphalt is greater than that of PAN/SBS modified asphalt in the entire loading frequency range. The cone penetration test showed significantly enhanced shear strength of KD-PAN/SBS modified asphalt. The adhesion work test results and SEM images of interface between fiber and SBS modified asphalt revealed that the adhesion effect of KD-PAN and SBS modified asphalt is better than that of PAN and SBS modified asphalt. SEM and AFM images of fiber further showed that the fiber surface becomes rough after modification. The increased surface roughness of KD-PAN facilitated the adherence of SBS modified asphalt to it, which in turn led to the enhanced performance of KD-PAN/SBS composite modified asphalt at the same fiber content and temperature.
机译：本研究报告了聚多巴胺仿生涂层和γ-甲基丙烯氧基丙基三甲氧基硅烷（KH570）复合改性聚丙烯腈（PAN）纤维作为二次改性剂对苯乙烯-丁二烯-苯乙烯（SBS）改性沥青性能的影响。动态剪切流变仪测试表明，与PAN/SBS改性沥青相比，SBS改性PAN（KD-PAN）的复合剪切模量、储能模量和损耗模量分别提高了12.4%、20.5%和11.2%。纤维/SBS复合改性沥青的G*主曲线表明，在整个加载频率范围内，KD-PAN/SBS改性沥青的变形抗力大于PAN/SBS改性沥青。锥体贯入试验表明，KD-PAN/SBS改性沥青的抗剪强度显著提高。粘着功测试结果和纤维与SBS改性沥青界面的SEM图像表明，KD-PAN和SBS改性沥青的粘着效果优于PAN和SBS改性沥青。纤维的SEM和AFM图像进一步表明，改性后纤维表面变得粗糙。KD-PAN表面粗糙度的增加促进了SBS改性沥青与KD-PAN的粘附，从而提高了KD-PAN/SBS复合改性沥青在相同纤维含量和温度下的性能。

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