西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 159-164.

• 油气化学工程 • 上一篇    下一篇

酚醛树脂冻胶流变性及粘弹性研究

于海洋1 张健2 王业飞1 纪文娟1 王所良1
  

  1. 1. 中国石油大学(华东)石油工程学院,山东青岛266555;
    2. 中海油研究总院,北京东城100027
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20

Rheological Behaviors and Viscoelasticity of Phenolic Resin Gel

YU Hai-yang 1 ZHANG Jian 2 WANG Ye-fei 1 JI Wen-juan 1 WANG Suo-liang 1
  

  1. 1. School of Petroleum Engineering, China University of Petroleum(East China), Qingdao, Shandong 266555, China;
    2. Research Centre, CNOOC, Dongcheng, Beijing 100027, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要: 由疏水缔合聚合物AP–P4 和酚醛树脂预聚体YG103 交联得到了酚醛树脂冻胶,研究了酚醛树脂冻胶的流变性和粘弹性,并对疏水缔合聚合物和酚醛树脂冻胶的粘弹性进行了对比。研究表明,酚醛树脂冻胶成胶过程可分为缓慢诱导阶段、快速增长阶段和稳定阶段。酚醛树脂冻胶的剪切应力具有时间依赖性和滞后特性,在外力作用一段时间后冻胶的应变可较好地恢复。与聚合物溶液相比,酚醛树脂冻胶具有更宽的线性粘弹性区域和更高的储能模量和损耗模量。在低频率下该冻胶的储能模量比损耗模量大,随着频率的增加,储能模量和损耗模量均增加;随着聚合物和交联剂质量分数的增加,冻胶体系的储能模量和损耗模量

均增加;随着矿化度的增加,冻胶体系的储能模量和损耗模量出现先降低—增加—降低的过程。

关键词:

疏水缔合聚合物, 酚醛树脂, 冻胶, 流变性, 粘弹性, 影响因素

Abstract: Phenolic resin gel which comprises hydrophobically associating polymer AP-P4 and crosslinker of phenolic resin YG103 is studied in its rheological behaviors and viscoelasticity characteristics, and the viscoelasticities between the phenolic resin gel and hydrophobically associating polymer are compared. The experiments indicated that the gelation procedure of the phenolic resin gel could be divided into three periods: the slowing induction period, the increasing gelation stage, and the stabilization stage. The shear stress of phenolic resin gel depend on

stress time and is hysteretic, and its strain could be better restored under the external force in a certain time. The phenolic resin gel has not only broader linear viscoelasticity area but also higher storage modulus and loss modulus than polymer solution. The storage modulus of the gel is higher than the loss modulus under low frequency, and the storage modulus and loss modulus could both increase in circumstance of increasing frequency or increasing the percentage of corsslinker and polymer. But the storage modulus and loss modulus of gel system has a process of decreasing—increasing—decreasing with salinity increasing.

Key words:

hydrophobically associating polyme, phenolic resin, gel, rheological behaviors, viscoelasticity, influence factors

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