基于动态力学的纳米碳粉-橡胶粉-SBS改性沥青相态结构分析

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (7): 2444-2453.

基于动态力学的纳米碳粉-橡胶粉-SBS改性沥青相态结构分析

王明伟¹, 谢祥兵¹, 李广慧¹, 兰翔²

1.郑州航空工业管理学院土木建筑学院,郑州 450046;
2.陕西高速公路工程咨询有限公司,西安 710064

收稿日期:2021-01-29 修回日期:2021-03-08 出版日期:2021-07-15 发布日期:2021-08-04
通讯作者: 谢祥兵,博士,讲师。E-mail:xiexiangbing.good@163.com;李广慧,博士,教授。E-mail:lgh@zua.edu.cn
作者简介:王明伟(1995—),男,硕士研究生。主要从事路面材料与结构方面的研究。E-mail:wmwzero@163.com
基金资助:
国家自然科学基金(51378474);中原科技创新领军人才中原千人计划(194200510015);中国博士后科学基金(2015M582590);河南省科技攻关项目(192102310012);河南省高等学校重点科研项目(19A560024)

Phase Structure Analysis of Nano Carbon Powder-Rubber Powder-SBS Modified Asphalt Based on Dynamic Mechanics

WANG Mingwei¹, XIE Xiangbing¹, LI Guanghui¹, LAN Xiang²

1. School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450046, China;
2. Shannxi Expressway Engineering Consulting Co., Ltd., Xi’an 710064, China

Received:2021-01-29 Revised:2021-03-08 Online:2021-07-15 Published:2021-08-04

摘要/Abstract

摘要： 为了分析纳米碳粉、橡胶粉、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)在沥青中的相态结构,首先对基质沥青和改性沥青进行物理性能试验、动态剪切流变试验(DSR),其次借助Han曲线理论和van Gurp-Palmen(vGP)图分析三种改性剂与基质沥青的相容性及相态结构。结果表明:在相同的试验条件下,2%纳米碳粉-18%橡胶粉-1.0%SBS改性沥青(以上均为质量分数)物理性能最佳,高低温性能较优;与基质沥青相比,添加改性剂后沥青材料出现微观相分离现象。在高温条件下,纳米碳粉-橡胶粉-SBS改性沥青相态结构较好,结合SEM照片阐释了改性机理,得出改性剂SBS可以有效改善纳米碳粉和橡胶粉在沥青中的骨架结构,形成三维连续稳定体系。

关键词: 改性沥青, 流变试验, 相态结构, 改性机理

Abstract: In order to analyze the phase structure of nano carbon powder, rubber powder and SBS in asphalt, the physical performance test and dynamic shear rheology test (DSR) of matrix asphalt and modified asphalt were first carried out, and secondly, use Han curve theory and vGP diagram analysis the compatibility and phase structure of three modifiers and matrix asphalt. The results show that under the same test conditions, 2% nano carbon powder-18% rubber powder-1.0% SBS (all above are mass fraction) modified asphalt has the best physical properties and better high-temperature stability. Compared with matrix asphalt, the asphalt with modifier the material exhibits microscopic phase separation. Under high temperature conditions, the phase structure of nano carbon powder-rubber powder-SBS modified asphalt is better. Combining the SEM images to explain the modification mechanism, it is concluded that the SBS modifier can effectively improve the skeleton structure system of nano carbon powder and rubber powder in asphalt.

Key words: modified asphalt, rheological test, phase structure, modification mechanism

中图分类号:

U414

王明伟, 谢祥兵, 李广慧, 兰翔. 基于动态力学的纳米碳粉-橡胶粉-SBS改性沥青相态结构分析[J]. 硅酸盐通报, 2021, 40(7): 2444-2453.

WANG Mingwei, XIE Xiangbing, LI Guanghui, LAN Xiang. Phase Structure Analysis of Nano Carbon Powder-Rubber Powder-SBS Modified Asphalt Based on Dynamic Mechanics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2444-2453.

参考文献

[1] ALONSO S, MEDINA-TORRES L, ZITZUMBO R, et al. Rheology of asphalt and styrene-butadiene blends[J]. Journal of Materials Science, 2010, 45(10): 2591-2597.
[2] ORTEGA F J, ROMAN C, NAVARRO F J, et al. Physico-chemistry control of the linear viscoelastic behaviour of bitumen/montmorillonite/MDI ternary composites: effect of the modification sequence[J]. Fuel Processing Technology, 2016, 143: 195-203.
[3] NAVARRO F J, PARTAL P, MARTÍNEZ-BOZA F J, et al. Novel recycled polyethylene/ground tire rubber/bitumen blends for use in roofing applications: thermo-mechanical properties[J]. Polymer Testing, 2010, 29(5): 588-595.
[4] ROOHOLAMINI H, IMANINASAB R, VAMEGH M. Experimental analysis of the influence of SBS/nanoclay addition on asphalt fatigue and thermal performance[J]. International Journal of Pavement Engineering, 2019, 20(6): 628-637.
[5] 杨志峰,李美江,王旭东.废旧橡胶粉在道路工程中应用的历史和现状[J].公路交通科技,2005,22(7):19-22.
YANG Z F, LI M J, WANG X D. The history and status quo of rubber powder used in roadbuilding[J]. Journal of Highway and Transportation Research and Development, 2005, 22(7): 19-22 (in Chinese).
[6] 孟旭,谢祥兵,李广慧,等.基于正交灰关联分析的纳米碳粉/橡胶粉复合改性沥青制备工艺试验研究[J].硅酸盐通报,2019,38(8):2642-2649.
MENG X, XIE X B, LI G H, et al. Experimental study on preparation technology of nano-carbon powder/rubber powder composite modified asphalt based on orthogonal grey relation analysis[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(8): 2642-2649 (in Chinese).
[7] 刘锋,王宏.抗车辙剂与橡胶粉复合改性沥青及混合料性能研究[J].公路,2017,62(1):209-214.
LIU F, WANG H. Research on technical performance of high modulus additive and SBR composite modified asphalt and its mixture[J]. Highway, 2017, 62(1): 209-214 (in Chinese).
[8] 姚辉,李亮,杨小礼,等.纳米材料改性沥青的微观和力学性能研究[J].建筑材料学报,2011,14(5):712-717.
YAO H, LI L, YANG X L, et al. Mechanics performance research and microstructure analysis of nanomaterials modified asphalt[J]. Journal of Building Materials, 2011, 14(5): 712-717 (in Chinese).
[9] ZHANG L, XING C, GAO F, et al. Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt[J]. Construction and Building Materials, 2016, 127: 466-474.
[10] 谭华,胡松山,刘斌清,等.基于流变学的复合改性橡胶沥青黏弹特性研究[J].土木工程学报,2017,50(1):115-122.
TAN H, HU S S, LIU B Q, et al. Study on viscoelastic properties of rubber modified asphalt based on rheology[J]. China Civil Engineering Journal, 2017, 50(1): 115-122 (in Chinese).
[11] 崔亚楠,邢永明,王岚,等.复合胶粉改性沥青的微观结构与流变特性[J].高分子材料科学与工程,2012,28(2):41-44.
CUI Y N, XING Y M, WANG L, et al. Micro-structure and rheological behavior of composite crumb rubber modified asphalt[J]. Polymer Materials Science & Engineering, 2012, 28(2): 41-44 (in Chinese).
[12] 何立平,魏建国,刘乐平,等.基于Han曲线的橡胶沥青结合料相态结构研究[J].公路交通科技,2017,34(5):10-18+94.
HE L P, WEI J G, LIU L P, et al. Study on phase structure of rubber asphalt binder based on Han curve[J]. Journal of Highway and Transportation Research and Development, 2017, 34(5): 10-18+94 (in Chinese).
[13] 郭猛.沥青胶浆的界面行为与机理分析[D].哈尔滨:哈尔滨工业大学,2012.
GUO M. Interfacial behavior of asphalt mastics and its mechanism[D]. Harbin: Harbin Institute of Technology, 2012 (in Chinese).
[14] HAN C D, BAEK D M, KIM J K, et al. Effect of volume fraction on the order-disorder transition in low molecular weight polystyrene-block-polyisoprene copolymers. 1. Order-disorder transition temperature determined by rheological measurements[J]. Macromolecules, 1995, 28(14): 5043-5062.
[15] HAN C D, KIM J, KIM J K. Determination of the order-disorder transition temperature of block copolymers[J]. Macromolecules, 1989, 22(1): 383-394.
[16] 梁明.聚合物改性沥青多相体系的流变学和形态学研究[D].东营:中国石油大学(华东),2017.
LIANG M. Rheology and morphology for the heterogeneous system of polymer modified asphalt[D]. Dongying: China University of Petroleum (Huadong), 2017 (in Chinese).
[17] GURP M V, PALMEN J. Time-temperature superposition for polymeric blends[J]. Clinical Cancer Research an Official Journal of the American Association for Cancer Research, 1998, 16(1): 141-153.
[18] PATHAK J A, COLBY R H, KAMATH S Y, et al. Rheology of miscible blends: SAN and PMMA[J]. Macromolecules, 1998, 31(25): 8988-8997.