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近期研制的非离子型表面性剂,其分子量比各种离子型表面活性剂成数量级增加,破乳时破乳剂分子分散在石油乳状液中,破乳剂分子迅速扩散,润湿油水界面膜,尽而大大降低油水界面膜的张力。SP型破乳剂,是聚氧乙烯、聚氧丙烯十八醇醚,线型结构,见(电镜照像1),属于分子量较大的非离子型表面活性剂,也是油田上应用比较早,比较多的石油破乳剂,从电镜中拍摄到的SP169破乳剂分子像貌为线性结构,分子较长,呈弯曲状,理论结构式的设计模型与从电镜中拍摄到的分子像貌的形状一致,分子的平均长度为测量值9000A°左右,一个聚合单体的长度5A°
Recent development of non-ionic surface agent, the molecular weight of various ionic surfactants increased by orders of magnitude, demulsifier demulsifier molecules dispersed in the oil emulsion, the demulsifier rapidly diffused molecules wetting oil-water interface membrane, make While greatly reducing the tension of the oil-water interface film. SP-type demulsifier, is a polyoxyethylene, polyoxypropylene octadecyl ether, linear structure, see (Electron Microscopy 1), belonging to the larger molecular weight non-ionic surfactant, but also the oil field application earlier, compare Many petroleum demulsifiers, shot from the electron microscope SP169 demulsifier molecular appearance as a linear structure, a long, curved, theoretical model design model and electron microscopy from the molecular appearance of the shape of the same appearance, the molecular The average length of the measured value of about 9000A °, the length of a polymerized monomer 5A °