CAJ | 학술논문

合成了三种不同聚氧丙烯/聚氧乙烯(PPO/PEO)比例的含苯环支状嵌段聚醚,通过界面张力、界面流变、表面压以及对原油乳状液的破乳脱水效果的测定,考察了其界面聚集行为和破乳作用对PEO含量和分子量的依赖性,并且对比研究了三种支状聚醚分子交联前后的破乳性能.结果表明, PEO含量高且分子量大者,其单分子界面占据面积大,在油/水界面达到吸附平衡的时间短,其油/水界面扩张模量及扩张弹性均高于PEO含量较少者.但是对原油乳状液的破乳脱水效果则是PEO含量居中的聚醚最好.温度影响和交联与否的研究表明,交联并不能提高分子量较大的聚醚对原油乳状液的破乳效果,温度对聚醚分子交联前后的破乳效果有不同的影响规律.本研究可为原油集输过程中化学品的选择与应用提供一定的依据.
합성료삼충불동취양병희/취양을희(PPO/PEO)비례적함분배지상감단취미,통과계면장력、계면류변、표면압이급대원유유상액적파유탈수효과적측정,고찰료기계면취집행위화파유작용대PEO함량화분자량적의뢰성,병차대비연구료삼충지상취미분자교련전후적파유성능.결과표명, PEO함량고차분자량대자,기단분자계면점거면적대,재유/수계면체도흡부평형적시간단,기유/수계면확장모량급확장탄성균고우PEO함량교소자.단시대원유유상액적파유탈수효과칙시PEO함량거중적취미최호.온도영향화교련여부적연구표명,교련병불능제고분자량교대적취미대원유유상액적파유효과,온도대취미분자교련전후적파유효과유불동적영향규률.본연구가위원유집수과정중화학품적선택여응용제공일정적의거.
@@@@Three poly(propylene oxide)-poly(ethylene oxide) branched block polyethers containing a benzene ring moiety were synthesized, with different molecular weights and propylene oxide/ethylene oxide (PPO/PEO) compositions. Their aggregation behaviors at air/water and oil/water interfaces were investigated by interfacial tension, surface pressure and interfacial dilational rheology methods. Aggregation and the emulsion breaking properties (demulsification) for crude oil were studied based on the polymer PEO content and molecular weight. The demulsification performance of these polyethers and their crosslinked counterparts were compared at different temperatures. The results showed that a polyether with a higher proportion of PEO groups and larger molecular weight occupied a larger area at the air/water interface, reached equilibrium faster, and featured a larger dilational modulus at the oil/water interface. However, the demulsification experiments showed that the polyether with a moderate level of PEO content gave better performance. The cross linking method did not improve demulsification ability in the polyether with large molecular weights. Temperature was also found to have no explicit influence on the demulsification of the cross linked polyethers. This study provides useful data for the selection and application of chemicals used in processing of crude oil.