Due to the poor salt tolerance and heat resistance of the partially hydrolyzed acryl amide in the reservoir of high temperature and high inorganic salt,and the poor ability of shear,the hydrophobically associating ter...Due to the poor salt tolerance and heat resistance of the partially hydrolyzed acryl amide in the reservoir of high temperature and high inorganic salt,and the poor ability of shear,the hydrophobically associating terpolymers acrylamide\|hexadecyl ally ammonium chloride\|2\|acrylamino\|2\|metyl propane sulfuric acid (AM\|C 16 DMAAC\|AMPS) is prepared by micelle polymerization with the nonionic monomer\|AM,the anionic monomer\|AMPS,the cationic monomer\|C 16 DMAAC,It is investigated that the effect of the content of the hydrophobic monomer,anionic monomer,cationic monomer,reaction temperature and the concentration of the inorganic salt and the surfactant on the viscosity of the hydrophobically associating aqueous soluble terpolymers in brine.The results show that the aqueous soluble hydrophobically associating terpolymers(1000?mg/L) have good viscofication effect in brine(20000?mg/L),when the content of the hydrophobic monomer is 1\^2%,and of the anionic monomer is 30%,the hydrophobically associating terpolymers can meet the need of polymer flooding in reservoir of the high concentration inorganic salt.展开更多
以羧甲基纤维素(carboxymethylcellulose,简称CMC)为基材,石蜡为油相,二甲基二烯丙基氯化铵(DMDAAC)、丙烯酰胺(AM)为共聚单体,在反相乳液中合成羧甲基纤维素 二甲基二烯丙基氯化铵 丙烯酰胺接枝共聚物(CMC g DMDAAC AM)。考察了乳化剂...以羧甲基纤维素(carboxymethylcellulose,简称CMC)为基材,石蜡为油相,二甲基二烯丙基氯化铵(DMDAAC)、丙烯酰胺(AM)为共聚单体,在反相乳液中合成羧甲基纤维素 二甲基二烯丙基氯化铵 丙烯酰胺接枝共聚物(CMC g DMDAAC AM)。考察了乳化剂、引发剂、油水体积比和单体配比对接枝共聚反应的影响,得到合成CMC g DMDAAC AM的最佳条件为:w(totalmonomers)=35%,m(DMDAAC)∶m(AM)=1∶1.75,w(Span 80)=6%,引发剂c[(NH2)4S2O8]=0.055mol/L,油水体积比V(油)∶V(水)=1.2∶1,θ=48℃,t=4h。展开更多
以异辛醇改性三氯氧钒(VOCl_3·3(2-ethyl-hexanol))为催化剂前体,倍半乙基铝(EASC)为助催化剂,三氯乙酸乙酯(ETCA)为活化剂进行乙烯/丙烯共聚合,并与传统VOCl_3体系进行对比。考察了EASC和ETCA用量、反应温度对聚合的影响。随EASC...以异辛醇改性三氯氧钒(VOCl_3·3(2-ethyl-hexanol))为催化剂前体,倍半乙基铝(EASC)为助催化剂,三氯乙酸乙酯(ETCA)为活化剂进行乙烯/丙烯共聚合,并与传统VOCl_3体系进行对比。考察了EASC和ETCA用量、反应温度对聚合的影响。随EASC用量的增加,2种催化体系活性均先增加后下降,VOCl_3·3(2-ethyl-hexanol)和VOCl_3体系分别在[Al]/[V]比为40和30时达到最高催化活性6. 15 kg EPR/g V·h和4. 97 kg EPR/g V·h。2种催化体系活性均随聚合温度的升高呈下降的趋势,VOCl_3·3(2-ethyl-hexanol)体系的下降幅度低于VOCl_3体系,表明异辛醇有效地稳定了生成的活性中心。差示扫描量热分析和核磁共振碳谱分析表明以VOCl_3·3(2-ethyl-hexanol)体系所合成的共聚物较VOCl_3体系有更高的丙烯插入率和更为无规的结构。展开更多
文摘Due to the poor salt tolerance and heat resistance of the partially hydrolyzed acryl amide in the reservoir of high temperature and high inorganic salt,and the poor ability of shear,the hydrophobically associating terpolymers acrylamide\|hexadecyl ally ammonium chloride\|2\|acrylamino\|2\|metyl propane sulfuric acid (AM\|C 16 DMAAC\|AMPS) is prepared by micelle polymerization with the nonionic monomer\|AM,the anionic monomer\|AMPS,the cationic monomer\|C 16 DMAAC,It is investigated that the effect of the content of the hydrophobic monomer,anionic monomer,cationic monomer,reaction temperature and the concentration of the inorganic salt and the surfactant on the viscosity of the hydrophobically associating aqueous soluble terpolymers in brine.The results show that the aqueous soluble hydrophobically associating terpolymers(1000?mg/L) have good viscofication effect in brine(20000?mg/L),when the content of the hydrophobic monomer is 1\^2%,and of the anionic monomer is 30%,the hydrophobically associating terpolymers can meet the need of polymer flooding in reservoir of the high concentration inorganic salt.
文摘以羧甲基纤维素(carboxymethylcellulose,简称CMC)为基材,石蜡为油相,二甲基二烯丙基氯化铵(DMDAAC)、丙烯酰胺(AM)为共聚单体,在反相乳液中合成羧甲基纤维素 二甲基二烯丙基氯化铵 丙烯酰胺接枝共聚物(CMC g DMDAAC AM)。考察了乳化剂、引发剂、油水体积比和单体配比对接枝共聚反应的影响,得到合成CMC g DMDAAC AM的最佳条件为:w(totalmonomers)=35%,m(DMDAAC)∶m(AM)=1∶1.75,w(Span 80)=6%,引发剂c[(NH2)4S2O8]=0.055mol/L,油水体积比V(油)∶V(水)=1.2∶1,θ=48℃,t=4h。
文摘以异辛醇改性三氯氧钒(VOCl_3·3(2-ethyl-hexanol))为催化剂前体,倍半乙基铝(EASC)为助催化剂,三氯乙酸乙酯(ETCA)为活化剂进行乙烯/丙烯共聚合,并与传统VOCl_3体系进行对比。考察了EASC和ETCA用量、反应温度对聚合的影响。随EASC用量的增加,2种催化体系活性均先增加后下降,VOCl_3·3(2-ethyl-hexanol)和VOCl_3体系分别在[Al]/[V]比为40和30时达到最高催化活性6. 15 kg EPR/g V·h和4. 97 kg EPR/g V·h。2种催化体系活性均随聚合温度的升高呈下降的趋势,VOCl_3·3(2-ethyl-hexanol)体系的下降幅度低于VOCl_3体系,表明异辛醇有效地稳定了生成的活性中心。差示扫描量热分析和核磁共振碳谱分析表明以VOCl_3·3(2-ethyl-hexanol)体系所合成的共聚物较VOCl_3体系有更高的丙烯插入率和更为无规的结构。
