橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2009 Vol.32 No.6 P.498-502

 橡胶技术网

丁苯弹性体/蒙脱土复合材料改性老化沥青

宁志刚　 孙瑜　 张宝昌　

摘　要：将粉末丁苯橡胶(PSBR)或苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)与蒙脱土(MMT)制成复合材料,用于改性老化沥青(PSBR质量分数3%,SBS质量分数5%),研究了复合材料及其改性老化沥青的结构,考察了MMT用量对复合材料改性老化沥青物理性能与高温贮存稳定性的影响.结果表明,在PSBR/MMT复合材料中,MMT与PSBR形成了插层结构;在PSBR/MMT和SBS/MMT复合材料改性老化沥青中,复合材料呈球状分布;当MMT用量过大时,部分MMT滞留在聚合物中,出现颗粒MMT;复合材料对老化沥青的物理性能改性优于单独加入MMT;PSBR/MMT复合材料可改善老化沥青的高低温性能;SBS/MMT复合材料可显著改善老化沥青的高温性能;MMT用量不同时,PSBR/MMT复合材料改性老化沥青的贮存稳定性相当;当SBS/MMT(质量比)为5/3时,复合材料改性老化沥青的贮存稳定性较佳.
关键词：粉末丁苯橡胶;苯乙烯-丁二烯-苯乙烯嵌段共聚物;蒙脱土;复合材料;老化沥青;改性;物理性能;贮存稳定性
分类号：TQ333.1 　文献标识码：B
文章编号：1000-1255(2009)06-0498-05

Aged asphalt modified by styrene-butadiene elastomer/montmorillonite composites

Ning Zhigang（School of Science, Northeastern University, Shenyang 110004,China;School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China）　 Sun Yu（School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China）　 Zhang Baochang（School of Science, Northeastern University, Shenyang 110004,China;Educational Administration of Changchun University of Technology, Changchun 130012, China）　

Abstract：The compsites of powder styrene-butadiene rubber(PSBR) /montmorillonite (MMT) and styrene-butadiene-styrene block copolymer (SBS)/MMT were prepared and used to modify aged asphalt(mass fraction of PSBR 3%,mass fraction of SBS 5%). The structure of the composites and modified aged asphalt was studied. The effect of MMT content on physical performance and high temperature storage stability was investigated. The results showed that the intercalation structure between MMT and PSBR exited in MMT/PSBR composites, the composites dispersed in sphere in the modified aged asphalt, and a part of MMT stayed in the polymer and aggregated into particles when MMT was added in excess. The physical performance of aged asphalt modified by PSBR/MMT or SBS/MMT was better than that of MMT modified aged asphalt. The high and low temperature performance of aged asphalt modified with PSBR/MMT composite was enhanced, and the high temperature performance of aged asphalt modified with SBS/MMT composite was enhanced. The storage stability of aged asphalt modified with PSBR/MMT composites were similar at different MMT amount, and storage stability of aged asphalt modified with SBS/MMT composites was better when SBS/MMT (mass ratio)was 5/3.
Keywords：powder styrene-butadiene rubber; styrene-butadiene-styrene block copolymer; montmorillonite; composite; aged asphalt; modification; physical performance; storage stability

基金项目：吉林省科技厅、教育厅资助项目(吉教科合字[2006]第59号).
作者简介：宁志刚(1959-),男,副教授.已发表论文10余篇.
作者单位：宁志刚（东北大学,理学院,辽宁,沈阳110004;长春工业大学,化学与生命科学学院,吉林,长春130012）　
　　　　　孙瑜（长春工业大学,化学与生命科学学院,吉林,长春130012）　
　　　　　张宝昌（东北大学,理学院,辽宁,沈阳110004;长春工业大学,教务处,吉林,长春130012）　

参考文献：

[1]曹雪娟,张爱民.SBS改性沥青的研究[D].成都:四川大学,2004.
[2]Wang Dong,Yang Peng,Liu Daosheng,et al.Preparation of high-quality paving asphalt of Liao Shu and analysis of its road performance[J].Journal of Fushun Petroleum Institute,2001,21(2):5-8.
[3]White O.Handbook of shell asphalts[M].London:Shell Bitumen UK,1991:35-37.
[4]石洪波,廖克俭.废橡胶粉改性沥青的老化动力学[J].合成橡胶工业,2007,30(1):26-29.
[5]Ruan Yonghong,Davison R R,Glover C J.The effect of long-term oxidation on the rheological properties of polymer modified asphalts[J].Fuel,2003(82):1763-1773.
[6]Siddiqui M N,Ali M F.Studies on the ageing behavior of the Arabian asphalts[J].Fuel,1999,78(9):1015-1015.
[7]Zhao Yucui,Wang Cuihong,Chen Jijun,et al.The researches of behaviors of asphalt ageing[J].Petroleum Asphalt,2000,14(4):1-5.
[8]柳永行,范辉华.石油沥青[M].北京:石油工业出版社,1984:15-22.
[9]钱春香,解建光,王鸿博.SBS和SEBS改性沥青及混合料抗老化性能[J].东南大学学报:自然科学版,2005,35(6):945-949.
[10]Makoto O,Kazuyuki K.Preparation of inorganic-organic nanocomposites through intercalation of organoammonium ions into layered[J].Bull Chem Soc Jpn,1997,70(11):2593-2618.

收稿日期：2008年11月14日

修稿日期：2009年8月20日

出版日期：2009年11月15日