含氢硅油改性聚醚破乳剂的表界面性能研究

doi:10.3969/j.issn.1001-1803.2021.03.001

日用化学工业 ›› 2021, Vol. 51 ›› Issue (3): 171-177.doi: 10.3969/j.issn.1001-1803.2021.03.001

• 基础研究 • 下一篇

含氢硅油改性聚醚破乳剂的表界面性能研究

杨荻(),梅启翔,吴娟,赖璐(),梅平

长江大学化学与环境工程学院,湖北荆州 434023

收稿日期:2020-09-09 修回日期:2021-02-23 出版日期:2021-03-22 发布日期:2021-03-23
通讯作者: 赖璐
作者简介:杨荻（1996-）,男,湖南岳阳人,硕士研究生,电话：18216310585,E-mail： 2605245998@qq.com。

Research on surface and interface performance of hydrosilicone oil modified polyether demulsifiers

YANG Di(),MEI Qi-xiang,WU Juan,LAI Lu(),MEI Ping

School of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, Hubei 434023, China

Received:2020-09-09 Revised:2021-02-23 Online:2021-03-22 Published:2021-03-23
Contact: Lu LAI

摘要/Abstract

摘要：

将聚醚破乳剂SP169、AP201和AE1910进行硅油改性获得改性破乳剂SISP、SIAP和SIAE,并通过红外光谱进行了结构表征。测定了上述破乳剂的表面参数cmc、γ_cmc、Γ_max、A_min,结果显示改性后的破乳剂表面张力更低。动态油/水界面张力研究结果显示,多支化的SIAP和SIAE其降低油/水界面张力的能力更强。通过不同破乳剂的油/水界面黏弹性研究,得到了破乳剂油/水界面扩张弹性（ε_d）和扩张黏性（ωη_d）随着扩张频率（ω）变化的曲线,结果表明聚醚改性主要影响了破乳剂油/水界面黏性模量的变化。研究了破乳剂对原油乳状液的破乳性能,SP169和AP201改性后破乳剂SISP和SIAP性能提升最明显。

关键词: 改性聚醚破乳剂, 表界面性能, 界面黏弹性, 破乳性能

Abstract:

The polyether demulsifiers SP169, AP201 and AE1910, were modified with hydrosilicone oil to obtain modified demulsifiers SISP, SIAP and SIAE, which were characterized by FT-IR spectroscopy. The surface parameters such as cmc, γ_cmc, Γ_max, A_min of the demulsifiers were measured. The results showed that the modification improved the ability of the demulsifiers to reduce the surface tension of the solvent. However, the results of dynamic oil-water interfacial tension showed that the multi-branched SIAP and SIAE had higher ability to reduce the oil-water interfacial tension. Meanwhile, the curves of dilatational elasticity （ε_d） and dilatational viscosity （ωη_d） of demulsifiers at oil-water interface with the variation of dilatational frequency （ω） were obtained by studying the viscoelasticity of the oil-water interface for different demulsifiers. It showed that the modification of polyethers mainly caused the change of the viscous modulus at oil-water interface for the demulsifiers. The demulsification performance of demulsifiers for crude oil emulsions was studied, and the performance of SISP and SIAP which were demulsifiers modified from SP169 and AP201 had been improved maximally.

Key words: modified polyether demulsifier, surface and interface performance, interfacial viscoelasticity, demulsification

中图分类号:

TQ423

杨荻,梅启翔,吴娟,赖璐,梅平. 含氢硅油改性聚醚破乳剂的表界面性能研究[J]. 日用化学工业, 2021, 51(3): 171-177.

YANG Di,MEI Qi-xiang,WU Juan,LAI Lu,MEI Ping. Research on surface and interface performance of hydrosilicone oil modified polyether demulsifiers[J]. China Surfactant Detergent & Cosmetics, 2021, 51(3): 171-177.

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破乳剂	cmc/（g·L^-1）	γ_cmc/（mN·m^-1）	Γ_max/（μmol·m^-2）	A_min/nm²
SP169	0.15	33.45	0.85	1.90
SISP	0.46	31.12	1.27	1.26
AP201	0.47	32.24	0.38	4.25
SIAP	0.011	32.47	0.61	2.63
AE1910	0.12	34.26	0.71	2.28
SIAE	0.016	32.29	1.19	1.35

原油破乳剂	不同时间脱水率/%					界面状况	水相清洁度	挂壁程度
原油破乳剂	5 min	10 min	15 min	20 min	30 min	界面状况	水相清洁度	挂壁程度
SP169	4	4	12	20	60	较齐	清	挂壁
AP201	4	8	20	32	72	较齐	清	挂壁
AE1910	12	24	40	80	86	较齐	清	微挂
SISP	4	20	60	92	96	齐	清	微挂
SIAP	8	36	68	92	100	齐	清	微挂
SIAE	8	16	24	48	96	较齐	清	不挂
空白	0	0	0	0	0	/	/	/

含氢硅油改性聚醚破乳剂的表界面性能研究

Research on surface and interface performance of hydrosilicone oil modified polyether demulsifiers

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