耐盐型AA/AMPS/PVA吸水树脂研究  

STUDY ON SALT-RESISTANT AA/AMPS/PVA POLYMER HYDROGEL

作　　者：郭丽梅[1] 康雪[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《精细石油化工》2012年第4期21-25,共5页Speciality Petrochemicals

摘　　要：针对高盐地层条件下的油井出水问题,以丙烯酸(AA),2-丙烯酰胺-2-甲基丙磺酸(AMPS)为聚合单体,聚乙烯醇(PVA)为互穿剂,采用网络互穿技术合成耐盐型AA/AMPS/PVA吸水树脂。以吸水率为评价指标考察合成条件对树脂性能的影响。最佳工艺条件:w(单体)=25%,丙烯酸中和度85%,w(交联剂)=0.175%,w(引发剂)=0.15%,树脂在80℃时,2×104 mg/L NaCl溶液中膨胀倍率为21.77g/g,在5×104mg/L CaCl2溶液中膨胀倍率为12.46g/g。研究表明,树脂平衡溶胀时间为120min,树脂形成了适度有效的交联网状结构,在过硫酸钾溶液中能够完全降解。The AA/AMPS/PVA polymer hydrogel was synthesized by interpenetrating PVA into the polymer through solution polymerization. The reaction parameters were investigated using water ab- sorbency as the target. The optimal reaction conditions were found as follows, monomer concentration25%, AA neutralization 85%, concentration of crosslinker 0. 175%, concentration of initiator 0.15%. At 80 ℃, the water absorbency of the hydrogel was 21.77g/g in 2× 10^4 mg/L NaCl salt solu-tion and 12.46 g/g in 5 × 10^4 mg/L CaC12 salt solution. The time of the gel need to reach equilibrium swelling was 120 rain. SEM micrographs show that the gel formed an effective network. The degrada-tion of the gel can proceed to completeness in KPS solution.

关 键 词：丙烯酸 2-丙烯酰胺-2-甲基丙磺酸 聚乙烯醇 耐盐 聚合物树脂 堵水 

分 类 号：TQ322.91[化学工程—合成树脂塑料工业]