Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2010, Vol. 23 ›› Issue (1): 16-18.DOI: 10.3696/j.issn.1006-396X.2010.01.004

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Effect of Ethylene-Vinyl Acetate Copolymer on the Zeta Potential of Wax Crystal

  

  1. 1.State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, P.R.China；
    2.Yumen Oilfield CNPC,Jiuquan Gansu 735109,P.R.China
  • Received:2009-06-01 Revised:2009-11-10 Published:2010-03-25 Online:2010-03-25

降凝剂乙烯-醋酸乙烯酯对蜡晶Zeta电位的影响

宋昭峥,唐飞,郑爱萍,蒋庆哲   

  1. 1 .中国石油大学(北京)重质油国家重点实验室, 北京102249 ;　2 .中国石油玉门油田, 甘肃酒泉735109
  • 作者简介:宋昭峥(1972 -), 男, 山东曲阜市, 副教授, 博士
  • 基金资助:
    十五国家科技攻关技术课题(2002BA312B -04)。

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Abstract:

The effects of ethylene-vinyl acetate copolymer（EVA） on the Zeta potential of wax crystals were studied by micro-electrophoretic equipment. The results show that when EVA content is low, the Zeta potential increases with EVA content. When EVA content reaches 600 μg/g, the Zeta potential（9.8 mV） doesn't increase with the increasing of EVA content. When the average carbon atom number of ethylene chain reaches 30 or so, the Zeta potential reaches the maximum 10.86 mV. When VA chain content reaches 45%, the Zeta potential reaches the maximum 15.0 mV. When the branch degree of EVA increases, the Zeta potential of wax crystals reduces. When the average molecular weight of EVA reaches 1.2×104, the Zeta potential reaches the maximum 11.8 mV. 

Key words: Pour point depressant , Ethylene vinyl acetate copolymer , Zeta potential of wax crystal

摘要： 通过微电泳仪研究了降凝剂乙烯-醋酸乙烯酯(EVA)对蜡晶Zeta电位的影响。结果表明,当降凝剂用量低时,蜡晶的 Zeta电位随降凝剂用量的增加而增加;降凝剂用量达到 600μg /g时,蜡晶 Zeta电位(9 .8 mV)不随降凝剂用量的变化而变化;在乙烯链节的平均碳原子数为30左右,蜡晶 Zeta电位值最大,最大值为10 .86 mV;降凝剂 EVA分子结构中 VA链节质量分数在45%时,蜡晶 Zeta电位最大,最大值 15 mV;EVA支化度的增加,蜡晶Zeta电位变小;平均相对分子质量为1 .2×104,蜡晶 Zeta电位值最大,最大值为11 .8 mV。

关键词: 降凝剂 , 乙烯－ 醋酸乙烯酯共聚物 , 蜡晶Zeta 电位

Cite this article

SONG Zhao-zheng, TANG Fei, ZHENG Ai-ping,et al. Effect of Ethylene-Vinyl Acetate Copolymer on the Zeta Potential of Wax Crystal[J]. Journal of Petrochemical Universities, 2010, 23(1): 16-18.

宋昭峥,唐飞,郑爱萍,蒋庆哲. 降凝剂乙烯-醋酸乙烯酯对蜡晶Zeta电位的影响[J]. 石油化工高等学校学报, 2010, 23(1): 16-18.

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