Reducing Benzo(a)pyrene Content of Coal-tar-pitch Modified by Styrene-butadiene Rubber Through Dynamic Vulcanization
Coal tar pitch (CTP) mainly consists of polycyclic aromatic hydrocarbons (PAHs),some of which are carcinogenic.Among PAHs,benzo(a)pyrene (BAP) as one of the most prominently reported carcinogens which present in CTP causes the concerns of environmentalists.In this work,CTP was modified by styrene-butadiene rubber (SBR) through dynamic vulcanization.Ultravioletvisible spectrophotometry (UV-VIS) was used to measure the content of BAP.After SBR modification through dynamic vulcanization,the BAP content have been reduced to 50%.With increasing the content of SBR,the content of BAP further reduced.The light component of the modified CTP decreased by the SBR modifier,verified by Headspace gas chromatography-mass spectrometry (GC-MS).Meanwhile,the SBR modifier has improved physical properties of the CTP,such as softening point,ductility,flowing property at high temperature.When the SBR content reached to 6 from 5.5,the softening point increased dramatically to 99 from 50.5.Thus,the modified CTP has various potential applications such as road pavement and carbon binder.
Coal tar pitch Benzo(a)pyrene Styrene-butadiene rubber Dynamic vulcanization Road pavement
Chunfa Ouyang Xiangyong Li Qun Gao Xiaoqian Shan Yutao Shi Kangsheng Zheng Lingdi Zhao
School of Materials Science & Engineering, Shanghai Institute of Technology,Shanghai 201418, China Shanghai Kerui Metallurgical Charging Co., Ltd
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
292-300
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）