过氧化氢处理胶粉对橡胶-沥青黏弹性的影响
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摘要
为了研究废胎胶粉经过氧化氢(H_2O_2)溶液处理后其孔结构和表观形貌的变化及对所制备橡胶-沥青高温性能的影响,采用三种不同比例的H_2O_2溶液对废胎胶粉进行表面改性处理,并制备橡胶-沥青。通过胶粉气体吸附试验、扫描电镜试验、沥青旋转黏度试验和动态剪切流变试验分析了不同比例的H_2O_2溶液对胶粉的孔隙结构、微观形貌和所制备橡胶-沥青的黏度、黏弹性等宏观力学性能的影响规律。结果表明:胶粉经H_2O_2溶液处理后,平均孔径明显变小,孔体积和孔面积的变化呈现一定的规律;随H_2O_2溶液比例的增加,胶粉颗粒间接触面增加,表面絮状物和孔隙增多,加强了胶粉与沥青的界面结合度。这使得胶粉中的橡胶烃在沥青中的溶解度增加,炭黑颗粒释放增多,胶粉颗粒的强度、弹性和耐磨性等力学性能下降,导致橡胶-沥青的弹性、黏度和高温抗车辙能力降低。
The pore structure and surface morphology of rubber powder treated by hydrogen peroxide(H_2 O_2)solution and high temperature performance of crumb rubber modified asphalt prepared from crumb rubber treated by three different proportions of H_2 O_2 solution on the crumb rubber surface modification were studied.The pore structure,micro-morphology of the rubber powder and the viscosity,viscoelasticity of the rubber asphalt were analyzed by the adsorption-desorption experiments,scanning electron microscope test,rotational viscosity test and dynamic shear rheological test.The results show that the average pore size of the rubber powder after treatment with H_2 O_2 solution is significantly smaller,and the pore volume and pore area of the pores change in a certain pattern.With the increase of the proportion of H_2 O_2 solution,the contact surface between the particles increases,the floccule and pores of the powder increase,and the interface degree between the powder and the asphalt is strengthened.In the asphalt,the solubility of the rubber hydrocarbon and release of the carbon black particles of the rubber powder increase,and the mechanical properties such as the strength,elasticity and wear resistance of the rubber powder decrease.As a result,the elasticity,viscosity and high-temperature rutting resistance of the rubber asphalt decrease.
The pore structure and surface morphology of rubber powder treated by hydrogen peroxide(H_2 O_2)solution and high temperature performance of crumb rubber modified asphalt prepared from crumb rubber treated by three different proportions of H_2 O_2 solution on the crumb rubber surface modification were studied.The pore structure,micro-morphology of the rubber powder and the viscosity,viscoelasticity of the rubber asphalt were analyzed by the adsorption-desorption experiments,scanning electron microscope test,rotational viscosity test and dynamic shear rheological test.The results show that the average pore size of the rubber powder after treatment with H_2 O_2 solution is significantly smaller,and the pore volume and pore area of the pores change in a certain pattern.With the increase of the proportion of H_2 O_2 solution,the contact surface between the particles increases,the floccule and pores of the powder increase,and the interface degree between the powder and the asphalt is strengthened.In the asphalt,the solubility of the rubber hydrocarbon and release of the carbon black particles of the rubber powder increase,and the mechanical properties such as the strength,elasticity and wear resistance of the rubber powder decrease.As a result,the elasticity,viscosity and high-temperature rutting resistance of the rubber asphalt decrease.
引文
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[21]CHALMERS G R,BUSTIN R M,POWER I M.Characterization of gas shale pore systems by porosimetry,pycnometry,surface area,and field emission scanning electron microscopy/transmission electron microscopy image analyses:Examples from the Barnett,Woodford,Haynesville,Marcellus,and Doig units[J].AAPG bulletin,2012,96(6):1099-1119.
[22]高建华,魏志峰,楚晓辉,等.SHRP法评价胶粉及胶粉复合改性沥青性能[J].中外公路,2011,31(05):250-252.GAO Jianhua,WEI Zhifeng,CHU Xiaohui,et al.Study on the performance of composite modified asphalt with powder and rubber powder by SHRP method[J].Journal of China &Foreign Highway,2011,31(05):250-252(in Chinese).
[23]杨朋,张肖宁.橡胶沥青混合料压实性能研究[J].公路工程,2009,34(04):141-144.YANG Peng,ZHANG Xiaoning.Study on compactibility of hot asphalt mixtures made with crumb rubber-modified binders[J].Highway Engineering,2009,34(04):141-144(in Chinese).
[24]肖鹏.微波辐射废胶粉改性沥青的反应机理[J].江苏大学学报(自然科学版),2007,28(06):491-494.XIAO Peng.Reaction Mechanism of Microwave Asphalt Modified Crude Rubber Modified Asphalt[J].Journal of Jiangsu University(Natural Science Edition),2007,28(06):491-494(in Chinese).
[25]刘谨菡,王海龙,王岩,等.基于砂浆流动性的改性胶粉微观界面机理的研究[J].硅酸盐通报,2016,35(11):3770-3776.LIU Jinhan,WANG Hailong,WANG Yan,et al.Research on the microscopic interface mechanism of modified rubber powder based on mortar fluidity[J].Silicate Bulletin,2016,35(11):3770-3776(in Chinese).
[26]宋义虎,杜淼,杨红梅,等.橡胶材料的结构与黏弹性[J].高分子学报,2013(09):1115-1130.SONG Yihu,DU Miao,YANG Hongmei,et al.Structural and viscoelastic properties of rubber materials[J].Acta Polymerica Sinica,2013(09):1115-1130.
[2]何亮,马育,马涛.橡胶沥青及其老化特性研究[J].建筑材料学报,2013,16(02):370-374.HE Liang,MA Yu,MA Tao.Research on rubber asphalt and its aging characteristics[J].Journal of Building Materials,2013,16(02):370-374(in Chinese).
[3]KIM H S,LEE S J,AMIRKHANIAN S.Rheology investigation of crumb rubber modified asphalt binders[J].Ksce Journal of Civil Engineering,2010,14(06):839-843.
[4]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(01):115-122.TAN Hua,HU Songshan,LIU Binqing,et al.Study on Viscoelastic Properties of Compound Modified Rubber Asphalt Based on Rheology[J].China Civil Engineering Journal,2017,50(01):115-122(in Chinese).
[5]康爱红.活化废胶粉改性沥青机理研究[J].公路交通科技,2008,25(07):12-16.KANG Aihong.Research on the Mechanism of ACRM[J]Journal of Highway and Transportation Research and Development,2008,25(07):12-16(in Chinese).
[6]肖建军,邱祖民,金斐,等.次氯酸钠酸溶液处理对废旧轮胎橡胶表面润湿性的影响[J].化工新型材料,2015,43(11):120-122.XIAO Jianjun,QIU Zumin,JIN Fei,et al.Influence of sodium hypochlorite acid solution on the surface wettability of waste tire rubber[J].New Chemical Materials,2015,43(11):120-122(in Chinese).
[7]薛哲,乔云雁,宋莉芳,等.过氧化苯甲酰氧化废胶粉在橡胶沥青中的应用[J].化学研究与应用,2017,29(07):1089-1093.XUE Zhe,QIAO Yunyan,SONG Lifang,et al.Benzoyl peroxide oxidation of crumb tire rubber and its application in rubber asphalt[J].Chemical Research and Application,2017,29(07):1089-1093(in Chinese).
[8]HONG Y P,ZHANG D R,OH S W,et al.Studies on SBR and EVA surfaces treated with new adhesion activators[J].Journal of Industrial &Engineering Chemistry,2004,10(05):806-812.
[9]MEMON G M.Modified asphalt:US,6444731[P].2002-09-03.
[10]XIAO M,DING W.Research on the Mecha-nism of the Crumb Rubber Modified Asphalt Activated by the Additive[C].Geohunan International Conference,2011:115-121.
[11]KIM H,LEE S J,Amirkhanian S N.Quantifi-cation of oxidative aging of polymer-modified asphalt mixes made with warm mix technologies[J].Journal of Materials in Civil Engineering,2013,25(01):1-8.
[12]ALI M F,ALWAHAB H I.Prediction of Asphalt Rheological Properties using HP-GPC[J].Journal of Materials in Civil Engineering,1999,11(11):6-14.
[13]XU M,LIU J,LI W,et al.Novel method to prepare activated crumb rubber used for synthesis of activated crumb rubber modified asphalt[J].Journal of Materials in Civil Engineering,2014,27(05):04014173.
[14]杨小龙,李波,刘祥,等.基于生产工艺参数的橡胶沥青改性机理研究[J].建筑材料学报,2017,20(04):640-645.YANG Xiaolong,LI Bo,LIU Xiang,et al.Study on modification mechanism of rubber asphalt based on reaction parameters[J].Journal of Building Materials,2017,20(04):640-645(in Chinese).
[15]卢尚青.纳米CaO基吸附剂孔径调控及其CO2吸附性能[D].浙江:浙江大学,2017.LU Shangqing.Pore Size Control of Nano CaO Based Sorbent and its CO2Sorption Performance[D].Zhejiang:Zhejiang University,2017(in Chinese).
[16]韩吉伟,崔亚楠,李嘉迪,等.盐冻循环条件下改性沥青的细观结构及低温流变性能[J].复合材料学报,2016,33(08):1718-1724.HAN Jiwei,CUI Yanan,LI Jiadi,et al.Mesostructure and low-temperature rheological properties of modified asphalt under salt-frozen circulation conditions[J].Acta Materiae Compositae Sinica,2016,33(08):1718-1724(in Chinese).
[17]交通运输部公路科学研究院.公路工程沥青及沥青混合料试验规程:JTG E20—2011[S].北京:人民交通出版社,2011.Highway Research Institute of the Ministry of Transport.Highway engineering asphalt and asphalt mixture test procedure:JTG E20—2011[S].Beijing:People’s Communications Press,2011(in Chinese).
[18]交通运输部公路科学研究院.公路工程废胎胶粉橡胶-沥青:JT/T 798—2011[S].北京:人民交通出版社,2011.Highway Research Institute of the Ministry of Transport.Highway engineering waste rubber powder rubber asphalt:JT/T 798—2011[S].Beijing:China Communications Press,2011(in Chinese).
[19]李晓燕,平路,汪海年,等.基于国内外试验方法的橡胶沥青性能测试[J].交通运输工程学报,2015,15(01):10-17.LI Xiaoyan,PING Lu,WANG Hainian,et al.Performance test of rubber asphalt based on domestic and abroad test methods[J].Journal of Transportation Engineering,2015,15(01):10-17(in Chinese).
[20]崔亚楠,赵琳,韩吉伟,等.盐冻融循环条件下沥青高温流变性能及微观结构[J].复合材料学报,2017,34(08):1839-1846.CUI Yanan,ZHAO Lin,HAN Jiwei,et al.High temperature rheological properties and microstructure of asphalt under salt freeze-thaw cycle conditions[J].Acta Materiae Compositae Sinica,2017,34(08):1839-1846(in Chinese).
[21]CHALMERS G R,BUSTIN R M,POWER I M.Characterization of gas shale pore systems by porosimetry,pycnometry,surface area,and field emission scanning electron microscopy/transmission electron microscopy image analyses:Examples from the Barnett,Woodford,Haynesville,Marcellus,and Doig units[J].AAPG bulletin,2012,96(6):1099-1119.
[22]高建华,魏志峰,楚晓辉,等.SHRP法评价胶粉及胶粉复合改性沥青性能[J].中外公路,2011,31(05):250-252.GAO Jianhua,WEI Zhifeng,CHU Xiaohui,et al.Study on the performance of composite modified asphalt with powder and rubber powder by SHRP method[J].Journal of China &Foreign Highway,2011,31(05):250-252(in Chinese).
[23]杨朋,张肖宁.橡胶沥青混合料压实性能研究[J].公路工程,2009,34(04):141-144.YANG Peng,ZHANG Xiaoning.Study on compactibility of hot asphalt mixtures made with crumb rubber-modified binders[J].Highway Engineering,2009,34(04):141-144(in Chinese).
[24]肖鹏.微波辐射废胶粉改性沥青的反应机理[J].江苏大学学报(自然科学版),2007,28(06):491-494.XIAO Peng.Reaction Mechanism of Microwave Asphalt Modified Crude Rubber Modified Asphalt[J].Journal of Jiangsu University(Natural Science Edition),2007,28(06):491-494(in Chinese).
[25]刘谨菡,王海龙,王岩,等.基于砂浆流动性的改性胶粉微观界面机理的研究[J].硅酸盐通报,2016,35(11):3770-3776.LIU Jinhan,WANG Hailong,WANG Yan,et al.Research on the microscopic interface mechanism of modified rubber powder based on mortar fluidity[J].Silicate Bulletin,2016,35(11):3770-3776(in Chinese).
[26]宋义虎,杜淼,杨红梅,等.橡胶材料的结构与黏弹性[J].高分子学报,2013(09):1115-1130.SONG Yihu,DU Miao,YANG Hongmei,et al.Structural and viscoelastic properties of rubber materials[J].Acta Polymerica Sinica,2013(09):1115-1130.