Physically cross-linked high strength hydrogel which can be completely degradable was prepared by the micellar copolymerization using acrylic acid (AA) and octadecyl acrylate as the hydrophobic monomer. The hydrogel was characterized by the infrared absorption spectrum. The tensile strengths of hydrogels were tested in various raw materials, surfactant and initiator ratios. The degradation performances were investigated in different pH values. As a potential temporary plugging material in oilfield, the effect of temperature and salinity on swelling behavior of the hydrogel was also studied in this paper. As expected, this kind of hydrogel can be completely degraded under alkaline conditions. The higher the temperature, the shorter the time needed to reach complete degradation. High salinity was unfavorable to degradation of hydrogel.

通过使用丙烯酸（AA）和丙烯酸十八烷基酯作为疏水性单体的胶束共聚制备了可以完全降解的物理交联的高强度水凝胶。通过红外吸收光谱表征水凝胶。在各种原料，表面活性剂和引发剂的比例下测试了水凝胶的拉伸强度。研究了在不同pH值下的降解性能。作为油田潜在的临时堵漏材料，本文还研究了温度和盐度对水凝胶溶胀行为的影响。如预期的那样，这种水凝胶可以在碱性条件下完全降解。温度越高，达到完全降解所需的时间越短。高盐度不利于水凝胶的降解。