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作 者:黄玮[1] 白双福 丛玉凤[1] 唐东[1] 段月英 赵红丽[1]
机构地区:[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001
出 处:《精细化工》2017年第6期703-707,715,共6页Fine Chemicals
摘 要:将增黏用碳五石油树脂(C_5)作为疏水单体,与丙烯酰胺(AM)聚合反应得到AM/C_5二元共聚物,通过胺甲基化反应制得疏水聚合物Mannich碱。考察了单体质量比、引发剂用量、反应温度以及pH对聚合反应的影响;讨论了反应时间、反应温度以及溶液pH对Mannich碱溶液表观黏度的影响。采用FTIR、~1HNMR对产品进行结构表征,并对产品性能进行分析。结果表明,最佳聚合条件为:反应温度40℃,pH=8,引发剂用量为0.5%(以单体质量计),丙烯酰胺与碳五石油树脂的质量比为15∶1。当反应时间为5 h,温度60~70℃,pH=9,丙烯酰胺、甲醛、二甲胺的物质的量比为1∶1.1∶1.5,Mannich碱溶液黏度达到最佳(418 m Pa·s)。温度为90℃时,Mannich碱的黏度保留率为43.3%;当加入的NaCl、CaCl_2的质量浓度均为2 000 mg/L时,其黏度保留率分别为32.8%、21.7%。该Mannich碱具有较好的增黏、耐温及耐盐性。A copolymer AM/C5 was synthesized by eopolymerization of hydrophobic monomer (C5 petroleum resin) with acrylamide (AM), and then an aminomethylation of copolymer AM/C5 led to a novel hydrophobic polymer Mannich base. The effects of mass ratio of C5 petroleum resin and AM, dosage of initiator, reaction temperature and pH value on polymerization process were investigated. Meanwhile ,the effects of reaction time, reaction temperature and pH value on apparent viscosity of Mannich base were discussed. The structure of product was characterized by FTIR and 1HNMR, and the performance was also analyzed. The results showed that the optimum conditions of copolymerization were as follows : reaction temperature 40 ℃ , pH = 8, mass fraction of initiator 0. 5% ( based on mass of monomer), m (AM) :m ( C5 ) = 15:1. The Mannich base solution had a higher value of apparent viscosity (418 mPa · s) under the conditions of reaction time 5 h, reaction temperature 60 - 70 ℃, pH = 9, n ( AM ) : n (HCHO) : n [ NH ( CH3 ) 2] = 1 : 1.1 : 1.5. In addition, the viscosity retention rate was 43.3 % at 90 ℃, and when the mass concentration of NaCl and CaCl/ was both 2 000 mg/L, the viscosity retention rate was 32. 8% and 21.7%, respectively. Thus, the resulting Mannich base displayed excellent tackability, temperature resistance and salt tolerance.
关 键 词:碳五石油树脂 丙烯酰胺 MANNICH反应 耐温 耐盐 油田化学品
分 类 号:TQ317.3[化学工程—高聚物工业]
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