阳离子疏水缔合聚丙烯酰胺的合成及性能
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摘要
以功能性疏水长链十八烷基二甲基烯丙基氯化铵(HM18)、丙烯酰胺(AM)和2-甲基-丙烯酰氧乙基-三甲基氯化铵(DMC)为原料,利用反相乳液聚合法合成了一种乳液型阳离子疏水缔合聚丙烯酰胺HAM-D。确定了其最佳合成条件:引发剂质量分数为0.04%(以单体总质量计),w(单体)=24%,反应温度为35℃,反应时间为6 h。通过红外光谱(FT-IR)、激光粒度仪、热重分析仪(TGA)和动态流变仪对HAM-D结构与性能进行表征。结果表明,HAM-D乳液粒径分布窄,稳定性好;与普通聚丙烯酰胺相比,HAM-D具有良好的耐热性;随着质量浓度的升高,HAM-D水溶液表观黏度逐渐上升,在5×104mg/L矿化水中仍可达到163 m Pa·s,表明HAM-D具有较好的增稠、耐盐性能;剪切300 s后,表观黏度由249 m Pa·s降到236m Pa·s,表现出良好的耐剪切性能。
HAM-D,an emulsion type hydrophobically associating cationic polyacrylamide,is synthesized through inverse emulsion polymerization method by using a functional hydrophobic long-chain octadecyl dimethyl allyl ammonium chloride( HM18),acrylamide( AM) and 2-methyl-acryloyloxyethyl-trimethylammonium chloride( DMC) as raw materials. The optimum synthetic conditions are determined that w( initiator) = 0. 04%( based on the total mass of monomers),w( monomers) = 24%,reaction temperature is at 35℃ and reaction time lasts for 6 h. The structure and properties of the prepared HAM-D are characterized by means of FT-IR,laser particle size analyzer,thermo gravimetric analyzer( TGA) and dynamic rheometer. The results show that HAM-D has narrow distribution of emulsion particle size and good emulsion stability. Compared with common polyacrylamide,HAM-D has good heat resistance. The apparent viscosity of HAM-D aqueous solution will increase gradually as the mass concentration of HAM-D increases. The apparent viscosity of HAM-D solution can reach 163 m Pa·s in 5 × 104 mg·L-1 mineralized water,reflecting that HAM-D has good thickening and salt resistance performances. After shearing 300 s,the apparent viscosity decreases from 249 m Pa·s to236 m Pa·s,showing an excellent shear resistance.
HAM-D,an emulsion type hydrophobically associating cationic polyacrylamide,is synthesized through inverse emulsion polymerization method by using a functional hydrophobic long-chain octadecyl dimethyl allyl ammonium chloride( HM18),acrylamide( AM) and 2-methyl-acryloyloxyethyl-trimethylammonium chloride( DMC) as raw materials. The optimum synthetic conditions are determined that w( initiator) = 0. 04%( based on the total mass of monomers),w( monomers) = 24%,reaction temperature is at 35℃ and reaction time lasts for 6 h. The structure and properties of the prepared HAM-D are characterized by means of FT-IR,laser particle size analyzer,thermo gravimetric analyzer( TGA) and dynamic rheometer. The results show that HAM-D has narrow distribution of emulsion particle size and good emulsion stability. Compared with common polyacrylamide,HAM-D has good heat resistance. The apparent viscosity of HAM-D aqueous solution will increase gradually as the mass concentration of HAM-D increases. The apparent viscosity of HAM-D solution can reach 163 m Pa·s in 5 × 104 mg·L-1 mineralized water,reflecting that HAM-D has good thickening and salt resistance performances. After shearing 300 s,the apparent viscosity decreases from 249 m Pa·s to236 m Pa·s,showing an excellent shear resistance.
引文
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[13]崔丽伟,展海军,白静.热分析技术在食品分析研究中的应用[J].食品研究与并发,2013,34(10):126-129.
[14]罗珊,苟绍华,刘通义.等.一种水溶性P(AM-Na AA-NIDA)的合成及溶液性能[J].精细化工,2015,32(6):679-684.
[15]马国艳,沈一丁,王小荣.等.压裂用疏水缔合聚合物溶液性质及减阻性能[J].精细化工,2016,33(10):1159-1164.
[2]Cao B J,Guo H P,Wang J,et al.Preparation of hydrophobic association polyacrylamide in a new micellar copolymerization system and its hydrophobically associative property[J].Macomolecules,2008,41:2890-2897.
[3]王磊,王丹,赖小娟.等.一种疏水缔合聚丙烯酰胺作为压裂液减阻剂的性能研究[J].现代化工,2016,36(10):113-116.
[4]马喜平,谢京豫,代磊阳.等.一种三元疏水缔合聚合物的合成及性质分析[J].精细石油化工,2016,33(1):1-5.
[5]黄玮,白双福,丛玉凤.等.疏水聚合物Mannich碱的合成及溶液性能[J].精细化工,2016,34(6):703-707.
[6]李真伟,梁大川,彭波.等.抗高温抗盐降滤失剂HRF的研制及应用[J].油田化学,2016,33(2):204-209.
[7]Zheng H,Sun Y,Zhu C,et al.V-initiated polymerization of hydrophobically associating cationic flocculants:Synthesis,characterization,and dewatering properties[J].Chem Eng J,2013,234(0):318-326.
[8]Yang X W,Shen Y D,Li P Z.Solution properties of anionic hydrophobic association polyacrylamide modified with fluorinated acrylate[J].J Polym Res,2010,17(4):601-606.
[9]郭睿,刘爱玉,杨江月.等.反相乳液聚合法制备HACC及其絮凝性能[J].精细化工,2016,33(9):1035-1042.
[10]魏向博,李小瑞,王磊.疏水缔合压裂液用稠化剂HAP-1的制备及性能评[J].现代化工,2016,36(10):104-110.
[11]李延芬,朱荣娇,孙永菊.两性疏水缔合聚丙烯酰胺的合成及性能[J].精细化工,2012,29(5):499-504.
[12]马国艳,沈一丁,李楷.等.滑溜水压裂液用聚合物减阻剂性能[J].精细化工,2016,33(11):1295-1300.
[13]崔丽伟,展海军,白静.热分析技术在食品分析研究中的应用[J].食品研究与并发,2013,34(10):126-129.
[14]罗珊,苟绍华,刘通义.等.一种水溶性P(AM-Na AA-NIDA)的合成及溶液性能[J].精细化工,2015,32(6):679-684.
[15]马国艳,沈一丁,王小荣.等.压裂用疏水缔合聚合物溶液性质及减阻性能[J].精细化工,2016,33(10):1159-1164.