摘要
以丙烯酸十八酯(ODA)为疏水单体,与丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酸(AA)通过自由基共聚法制得长脂肪链改性疏水缔合聚丙烯酰胺(PAMBA),采用红外光谱、X射线衍射对其结构进行了表征,并考察了其耐盐性、耐温性及耐剪切性能。研究发现,PAMBA水溶液中存在强烈的分子间缔合作用。合成的疏水缔合聚丙烯酰胺(PAMBA)具有阴离子磺酸基,因此具有良好的抗盐性。和未改性PAM相比,PAMBA在60℃下能保持较高的表观黏度,其耐温性和耐剪切性能明显提高。
In order to develop a hydrophobically associating polyacrylamide oil-displacing agent, hydro- phobically associating polyacrylamide （PAMBA） modified with long chain fat was prepared by free radical copolymerization with octadecyl acrylate （ODA）, acrylamide （AM）, 2-acrylamido-2-methyl propane sulfonic acid （AMPS）, and acrylic acid （AA）. Fourier transform infrared spectrometer and X-ray diffraction （XRD） were used to characterize the structure of PAMBA. The salt resistance, tem- perature resistance and shear resistance of PAMBA were discussed. The results show that there are strongly intermolecular hydrophobically associating interactions in the PAMBA aqueous solution; the synthetic hydrophobically associating polyacrylamide （PAMBA） has good salt resistance. Compared with unmodified PAM, PAMBA maintains higher apparent viscosity at 60 °C, and the temperature re- sistance and shear resistance of PAMBA is improved appreciably.
出处
《精细石油化工》
CAS
CSCD
北大核心
2012年第3期6-9,共4页
Speciality Petrochemicals
基金
国家科技重大专项"低渗透油藏中高含水期稳产配套技术"(2011ZX05013-005)
关键词
疏水缔合聚丙烯酰胺
长脂肪链
耐盐性
耐温性
耐剪切性
hydrophobically associating polyacrylamide
long fatly chain~ salt resistance~ temperatureresistance
shear resistance
