• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >A regular, hydrophobically modified polyampholyte as novel pour point depressant
【24h】

A regular, hydrophobically modified polyampholyte as novel pour point depressant

机译：一种常规的，疏水改性的两性电解质，可作为新型降凝剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new regular polyampholyte, namely poly(N,N-diallyl-N-octadecylamine-alt-(maleic acid)), was studied as an additive to crude oil. The amphiphilic polyampholyte proved to be an efficient pour point depressant, to inhibit the deposition of wax, and to improve the viscosity of waxy crude oil from the Akshabulak oilfield (Western Kazakhstan). On optimizing the concentration of the polymer, both the kinematical viscosity and the pour point of waxy crude oils were found to be strongly decreased. The morphology of the paraffin aggregates formed was compared before and after heat treatment of the waxy crude oils, in the presence and the absence of the polymer. The rheological characteristics of the waxy crude oil were markedly improved, in particular, by decreasing the plastic viscosity and the yield stress values upon addition the polymer. The inhibition of wax deposits in the presence of the amphiphilic polyampholyte was interpreted in terms of its interference with the wax crystallization process because of the formation of inverse micellar structures. Although the interaction of the cationic and the anionic groups on the polymer backbone stabilizes the smaller size of the aggregates, the hydrophobic side chains of the polymer provide nucleation sites and cocrystallize with the paraffins, thus modifying the paraffin crystal structure. (c) 2005 Wiley Periodicals, Inc.
机译：研究了一种新的常规两性电解质，即聚（N，N-二烯丙基-N-十八烷基胺-alt-（马来酸）），作为原油的添加剂。两亲性多两性电解质被证明是一种有效的降凝剂，可抑制蜡的沉积，并提高来自阿克沙布拉克油田（哈萨克斯坦西部）的蜡质原油的粘度。通过优化聚合物的浓度，发现蜡质原油的运动粘度和倾点均大大降低。在有蜡和无蜡的情况下，在蜡质原油进行热处理之前和之后，比较形成的石蜡聚集体的形态。蜡状原油的流变特性得到了显着改善，特别是通过降低添加聚合物后的塑性粘度和屈服应力值。两亲性聚两性电解质的存在抑制了蜡沉积，这是由于其形成了反胶束结构，从而干扰了蜡的结晶过程。尽管聚合物主链上阳离子基团和阴离子基团的相互作用稳定了较小的聚集体尺寸，但聚合物的疏水侧链提供了成核位点，并与石蜡共结晶，从而改变了石蜡的晶体结构。 （c）2005年Wiley Periodicals，Inc.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号