[1]李志刚,邓思奇,谭发茂,等.杜仲胶改性橡胶粉的混炼制备温度与时间参数分析[J].东南大学学报(自然科学版),2020,50(6):1109-1114.[doi:10.3969/j.issn.1001-0505.2020.06.017]
 Li Zhigang,Deng Siqi,Tan Famao,et al.Analysis on temperature and time for mixing preparation of crumb rubber modified by eucommia ulmoides gum[J].Journal of Southeast University (Natural Science Edition),2020,50(6):1109-1114.[doi:10.3969/j.issn.1001-0505.2020.06.017]
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杜仲胶改性橡胶粉的混炼制备温度与时间参数分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
50
期数:
2020年第6期
页码:
1109-1114
栏目:
交通运输工程
出版日期:
2020-11-20

文章信息/Info

Title:
Analysis on temperature and time for mixing preparation of crumb rubber modified by eucommia ulmoides gum
作者:
李志刚1邓思奇2谭发茂3徐磊4
1东南大学交通学院, 南京 211189; 2中国石油天然气股份有限公司广东销售分公司, 广州 510665; 3中国交通建设股份有限公司总承包经营分公司, 北京 100088; 4江苏道智公路科学研究院有限公司, 南京 210000
Author(s):
Li Zhigang1 Deng Siqi2 Tan Famao3 Xu Lei1
1School of Transportation, Southeast University, Nanjing 211189, China
2Petro China Guangdong Marketing Co., Petro China Co., Ltd., Guangzhou 510665, China
3Investment and Engineering Company, China Communications Construction Co., Ltd., Beijing 100088, China
4Jiangsu Daozhi Highway Science Research Institute Co., Ltd., Nanjing 210000, China
关键词:
橡胶沥青 杜仲胶与橡胶粉混炼 混炼温度和时间 硫化
Keywords:
rubber asphalt mixing of eucommia ulmoides gum and crumb rubber mixing temperature and time vulcanization
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2020.06.017
摘要:
为克服橡胶沥青黏度高和储存稳定性差等缺陷,基于杜仲胶的硫化特性,设定杜仲胶质量为橡胶粉质量的10%时,使用转矩流变仪分别制备出130、150、170 ℃下混炼2、5、15、30 min的杜仲胶与橡胶粉复合改性剂.通过沥青旋转黏度试验、聚合物改性沥青离析试验、荧光显微镜和扫描电子显微镜观测分别从宏观和微观层面研究改性剂的最佳混炼时间和温度,验证了杜仲胶对胶粉及橡胶沥青的改性效果.试验结果表明:杜仲胶与橡胶粉相容性良好,其混炼过程以物理反应为主,两者混炼可以提前让橡胶粉脱硫,并使杜仲胶硫化;杜仲胶改变了橡胶粉单独改性基质沥青过度溶胀的现象,明显改善了橡胶沥青的黏性和储存稳定性;170 ℃下混炼2 min可得到性能最佳的杜仲胶改性橡胶粉.
Abstract:
To overcome the defects of rubber asphalt such as high viscosity and poor storage stability, based on the vulcanized characteristic of eucommia ulmoides gum(EUG), the composite modifiers of EUG and crumb rubber(CR)were prepared by the torque remoter at 130, 150, and 170 ℃ for 2, 5, 15, and 30 min with the content of EUG of 10% of the mass of CR. The optimum mixing time and the temperature of the modifier were investigated at the macro- and micro-levels by the rotational viscosity test of asphalt, the segregation test of polymer modified asphalt, fluorescence microscopy and scanning electron microscopy. The modification effects of EUG on CR and asphalt were tested and verified. The results show that EUG and CR exhibit excellent compatibility. The physical action is the main form during the mixing process of EUG and CR, which can make CR desulfurized and EUG vulcanized in advance. EUG changes the excessive swelling phenomenon of CR in rubber asphalt, and greatly improves the viscosity property and storage stability of rubber asphalt. The best performance of EUG modified CR is obtained by mixing at 170 ℃ for 2 min.

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相似文献/References:

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 He Liang,Huang Xiaoming,Ma Yu,et al.Experimental study on storage stability of crumb rubber modified asphalt[J].Journal of Southeast University (Natural Science Edition),2011,41(6):1086.[doi:10.3969/j.issn.1001-0505.2011.05.036]

备注/Memo

备注/Memo:
收稿日期: 2020-05-13.
作者简介: 李志刚(1972—),男,博士,研究员,seulzg@139.com.
基金项目: 国家自然科学基金资助项目(51778621).
引用本文: 李志刚,邓思奇,谭发茂,等.杜仲胶改性橡胶粉的混炼制备温度与时间参数分析[J].东南大学学报(自然科学版),2020,50(6):1109-1114. DOI:10.3969/j.issn.1001-0505.2020.06.017.
更新日期/Last Update: 2020-11-20