首页|疏水改性微球的制备及其膨胀性能与应用研究

疏水改性微球的制备及其膨胀性能与应用研究

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
通过反相乳液聚合法制备了一种疏水改性P(AM-N)微球。采用傅里叶变换红外光谱(FTIR)、热重分析仪(TGA)、扫描电镜(SEM)、流变及岩心驱替实验对所合成微球的结构、形貌、性能以及封堵效果进行了表征与测试，并考察了溶胀时长、温度和不同盐溶液浓度对 P(AM-N)微球性能的影响。测试结果表明，P(AM-N)微球的平均粒径为 76。42 nm，溶胀 5 d后P(AM-N)微球的膨胀率高达 17。21 倍;在 70℃下，P(AM-N)微球老化 2 d 后溶胀率高达17。14倍，在 20 000 mg/L NaCl溶液和 2 000 mg/L CaCl2 溶液中分别溶胀 3d后膨胀率高达5。31 倍和 6。03 倍，说明其具有较好的耐温性和抗盐性;在注入量为 0。5%的条件下，P(AM-N)微球封堵率可达到 97。98%，与P(AM)微球相比具有更好的封堵性且弹性增强。
Study on preparation,swelling properties and application of hydrophobic modified polymer microspheres
A hydrophobic modification P(AM-N)microsphere was prepared by reversed-phase emulsion polymerization.The structure,morphology,properties and blocking effect of the synthesized microspheres were characterized and tested by Fourier transform infrared spec-troscopy(FTIR),thermogravimetric analyzer(TGA),scanning electron microscopy(SEM),rheology and core displacement experiments.The effects of swelling duration,temperature and concentration of different content of salt solution on the performance of P(AM-N)mi-crospheres were investigated.The test results showed that the average particle size of P(AM-N)microspheres was 76.42 nm,and the expansion rate of P(AM-N)microspheres was as high as 17.21 times after 5 days of swelling,and the swelling rate of P(AM-N)microspheres was as high as 17.14 times after aging for 2 days at 70℃,and swelled in 20 000 mg/L NaCl solution and 2 000 mg/L CaCl2 solution,respectively The expansion rate after 3 days was as high as 5.31 times and 6.03 times,indicating that it had good temperature resistance and salt resistance,and under the condition of 0.5%injection,the blocking rate of P(AM-N)micro-spheres could reach 97.98%,which had better plugging and enhanced elasticity compared with P(AM)microspheres.

hydrophobic modified polymer microspheresreversed-phase emulsion polymeri-zationswelling propertiesocclusion

马芹芹、赖小娟、刘锦、赵静、刘贵茹、文新

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陕西科技大学 化学与化工学院,陕西 西安 710021

陕西科技大学 陕西农产品加工技术研究院,陕西 西安 710021

长庆油田分公司 油气工艺研究院,陕西 西安 710018

西安长庆化工集团有限公司,陕西 西安 710018

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疏水改性微球 反相乳液聚合 膨胀性能 封堵性

陕西省科技厅重点研发计划项目陕西省外国专家服务计划项目陕西省教育厅产业化科研计划项目陕西省西安市科技计划项目

2023-YBGY-3072022 WGZJ-2721JC00822GXFW0014

2024

陕西科技大学学报
陕西科技大学

陕西科技大学学报

北大核心
影响因子：0.418
ISSN：2096-398X
年,卷(期)：2024.42(1)
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