[1]李志刚,卓义金,旷鹏.接枝杜仲胶改性沥青路用性能[J].东南大学学报(自然科学版),2009,39(6):1222-1225.[doi:10.3969/j.issn.1001-0505.2009.06.026]
 Li Zhigang,Zhuo Yijin,Kuang Peng.Performance of asphalt modified by grafting eucommia ulmoides gum[J].Journal of Southeast University (Natural Science Edition),2009,39(6):1222-1225.[doi:10.3969/j.issn.1001-0505.2009.06.026]
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接枝杜仲胶改性沥青路用性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第6期
页码:
1222-1225
栏目:
交通运输工程
出版日期:
2009-11-20

文章信息/Info

Title:
Performance of asphalt modified by grafting eucommia ulmoides gum
作者:
李志刚 卓义金 旷鹏
解放军理工大学工程兵工程学院, 南京 210007
Author(s):
Li Zhigang Zhuo Yijin Kuang Peng
Engineering Institute of Engineering Corps,PLA University of Science and Technology,Nanjing 210007,China
关键词:
接枝杜仲胶 改性沥青 路用性能
Keywords:
grafting eucommia ulmoides gum modified asphalt road performance
分类号:
U217.3
DOI:
10.3969/j.issn.1001-0505.2009.06.026
摘要:
为了进一步完善SBS改性沥青性能,降低合成高分子改性剂受原油价格和产量的影响程度,在天然高分子材料杜仲胶上接枝能与沥青氮基反应的官能团马来酸酐,形成一种新的天然沥青改性剂接枝杜仲胶.分析了接枝杜仲胶的生成方法与改性沥青的机理,根据杜仲胶接枝产物的红外光谱,确定了接枝产物的物理表征.将接枝杜仲胶与SBS复合后改性沥青,进行了沥青和沥青混合料的高低温和老化性能试验.试验结果表明:当小于2%掺量的接枝杜仲胶加入SBS改性沥青后能提高其高温和抗老化性能,不降低低温性能,而且1.5%掺量接枝杜仲胶对SBS改性沥青性能提高最为明显; 接枝杜仲胶取代一部分SBS后,沥青混合料除了低温性能相当外,强度、高温和水稳性能均得到不同程度的提高.接枝杜仲胶取代一部分SBS后不降低而是增强了改性沥青的使用品质,也减少了合成高分子材料的用量.
Abstract:
To further perfect the performance of SBS(polystyrene-polybutadiene-polystyrene)modified asphalt and reduce the influence of the price and output of crude oil on synthetic macromolecule modifier, a natural macromolecule material, eucommia ulmoides gum, is grafted with Malay anhydride which can react with the asphalt nitrogen group, to form a new natural asphalt modifier, grafting eucommia ulmoides gum. Firstly, the producing method of grafting eucommia ulmoides gum and modified mechanism of SBS on asphalt are analyzed. Based on the infrared spectrum of eucommia ulmoides gum grafting product, the physics characteristic of the grafting product is determined. The asphalt is modified by the grafting eucommia ulmoides gum blending with the SBS, and the experiment of high-low temperature and aging experiments of the asphalt and asphalt admixture have been made. The result indicates that when the asphalt is modified by less than 2% dose of grafting eucommia ulmoides gum and SBS, the performance of high temperature and aging resistance is improved, while the performance of low temperature doesn’t reduce. With 1.5% dose of grafting eucommia ulmoides gum with SBS, the performance of modified asphalt improves most obviously. After grafting eucommia ulmoides gum replacing a part of SBS, the asphalt admixture performance of strength, high temperature and water stability get improved in different degree, while the performance of low temperature is equivalent. Therefore after grafting eucommia ulmoides gum replacing a part of SBS, the performance of modified asphalt is not reduced but improved and the cost of synthetic macromolecule material reduces too.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 李志刚(1972—),男,博士,副教授,seulzg@263.net.
基金项目: 西部交通科技资助项目(2006-318-00038).
引文格式: 李志刚,卓义金,旷鹏.接枝杜仲胶改性沥青路用性能[J].东南大学学报:自然科学版,2009,39(6):1222-1225. [doi:10.3969/j.issn.1001-0505.2009.06.026]
更新日期/Last Update: 2009-11-20