The waterborne particles of bisphenol A epoxy resin were prepared by the phaseinversion technique, and the effects of the concentration of the synthetic polymeric emulslfleron the particles size and structure were dis...The waterborne particles of bisphenol A epoxy resin were prepared by the phaseinversion technique, and the effects of the concentration of the synthetic polymeric emulslfleron the particles size and structure were discussed. At lower concentration of the emulsifier,the bigger molecular sieves alike particles were obtained, on the contrary, the smallerparticles with some aggregation were prepared at higher concentration of the emulslfler. Theformation mechanism of different particle sizes and structure at different concentrations of theemulsifier was proposed. presides, the probable model of the aggregation was also brieflypresented.展开更多
为改善油气田环氧堵水剂低黏度和高强度之间的矛盾,以双酚F型环氧树脂(B)为基体、正丁醇醚化酚醛树脂(BPF)为交联剂和稀释剂、2-乙基-4-甲基咪唑(EMI)作为促进剂制得一种低黏度高强度堵水剂。研究了BPF的结构及其对固化体系黏度、固化...为改善油气田环氧堵水剂低黏度和高强度之间的矛盾,以双酚F型环氧树脂(B)为基体、正丁醇醚化酚醛树脂(BPF)为交联剂和稀释剂、2-乙基-4-甲基咪唑(EMI)作为促进剂制得一种低黏度高强度堵水剂。研究了BPF的结构及其对固化体系黏度、固化时间和力学强度的影响。结果表明,BPF可显著降低固化体系的黏度,当BPF质量分数达到80%时,B/BPF体系的黏度可低至50 m Pa·s,满足向气田深处输送的流动性要求。EMI可明显促进体系的固化,缩短凝胶化时间。通过调节EMI的加量可使体系的固化时间在1~7 h内可控。B/BPF体系具有较高的交联密度,力学性能良好,压缩强度可达129 MPa。B/BPF固化体系具有良好的水/酸耐受性与热稳定性,可以在地层高温、高矿化度的苛刻条件下长期稳定存在。B/BPF堵剂在固化前具有较低的黏度,固化后具有较高的强度,满足气井堵水剂的使用要求。展开更多
文摘The waterborne particles of bisphenol A epoxy resin were prepared by the phaseinversion technique, and the effects of the concentration of the synthetic polymeric emulslfleron the particles size and structure were discussed. At lower concentration of the emulsifier,the bigger molecular sieves alike particles were obtained, on the contrary, the smallerparticles with some aggregation were prepared at higher concentration of the emulslfler. Theformation mechanism of different particle sizes and structure at different concentrations of theemulsifier was proposed. presides, the probable model of the aggregation was also brieflypresented.
文摘为改善油气田环氧堵水剂低黏度和高强度之间的矛盾,以双酚F型环氧树脂(B)为基体、正丁醇醚化酚醛树脂(BPF)为交联剂和稀释剂、2-乙基-4-甲基咪唑(EMI)作为促进剂制得一种低黏度高强度堵水剂。研究了BPF的结构及其对固化体系黏度、固化时间和力学强度的影响。结果表明,BPF可显著降低固化体系的黏度,当BPF质量分数达到80%时,B/BPF体系的黏度可低至50 m Pa·s,满足向气田深处输送的流动性要求。EMI可明显促进体系的固化,缩短凝胶化时间。通过调节EMI的加量可使体系的固化时间在1~7 h内可控。B/BPF体系具有较高的交联密度,力学性能良好,压缩强度可达129 MPa。B/BPF固化体系具有良好的水/酸耐受性与热稳定性,可以在地层高温、高矿化度的苛刻条件下长期稳定存在。B/BPF堵剂在固化前具有较低的黏度,固化后具有较高的强度,满足气井堵水剂的使用要求。
