以丙烯酰胺（AM）与二甲基二烯丙基氯化铵（DMDAAC）为单体,MnCl_2/NaHSO_3为引发体系,通过水溶液聚合得到AM/DMDAAC共聚物;利用IR和~1H NMR等方法分析共聚物的结构,考察了反应条件对AM/DMDAAC共聚物性能的影响。表征结果显示,AM/DMDAA...以丙烯酰胺（AM）与二甲基二烯丙基氯化铵（DMDAAC）为单体,MnCl_2/NaHSO_3为引发体系,通过水溶液聚合得到AM/DMDAAC共聚物;利用IR和~1H NMR等方法分析共聚物的结构,考察了反应条件对AM/DMDAAC共聚物性能的影响。表征结果显示,AM/DMDAAC共聚物为目标产物。实验结果表明,合成AM/DMDAAC共聚物适宜的反应条件为：引发温度30℃、反应时间4h、n（AM）∶n（DMDAAC）=5∶1、单体用量25%（w）（基于反应体系质量）、n（MnCl_2）∶n（NaHSO_3）=1∶1、引发剂用量为单体质量的0.1%、引发剂采取固体投料方式。在该反应条件下,AM/DMDAAC共聚物的特性黏数为4.92 d L/g、阳离子度为11.30%、收率为45.66%。将MnCl_2/NaHSO_3引发体系与过硫酸铵复配引发共聚,能进一步提高AM/DMDAAC共聚物的收率、特性黏数和阳离子度。展开更多
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
采用γ-射线辐照法,以壳聚糖、丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DMDAAC)为原料制备了壳聚糖-AM-DMDAAC接枝共聚物。考察了吸收剂量、单体AM与DMDAAC重量比、壳聚糖与总单体重量比、反应物浓度等因素对接枝共聚反应的影响。结果表明...采用γ-射线辐照法,以壳聚糖、丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DMDAAC)为原料制备了壳聚糖-AM-DMDAAC接枝共聚物。考察了吸收剂量、单体AM与DMDAAC重量比、壳聚糖与总单体重量比、反应物浓度等因素对接枝共聚反应的影响。结果表明,随着吸收剂量的增大,接枝率和阳离子度上升,而接枝效率变化不大,吸收剂量为4 k Gy时最佳,接枝率、接枝效率和阳离子度分别为210.9%、96.1%和26.9%;接枝率和接枝效率随着AM与DMDAAC重量比的增加而提高,当AM与DMDAAC重量比为7:3时达到最大值,分别为182.6%和98.8%;随着壳聚糖与总单体重量比的降低,接枝率、接枝效率和阳离子度逐渐增加,当壳聚糖与总单体重量比为3:8时,其值分别为182.5%、94.9%和25.5%,接枝效果最好;接枝率、接枝效率和阳离子度随着反应物浓度的降低先上升后降低,醋酸最佳用量为100 m L。展开更多
文摘以丙烯酰胺（AM）与二甲基二烯丙基氯化铵（DMDAAC）为单体,MnCl_2/NaHSO_3为引发体系,通过水溶液聚合得到AM/DMDAAC共聚物;利用IR和~1H NMR等方法分析共聚物的结构,考察了反应条件对AM/DMDAAC共聚物性能的影响。表征结果显示,AM/DMDAAC共聚物为目标产物。实验结果表明,合成AM/DMDAAC共聚物适宜的反应条件为：引发温度30℃、反应时间4h、n（AM）∶n（DMDAAC）=5∶1、单体用量25%（w）（基于反应体系质量）、n（MnCl_2）∶n（NaHSO_3）=1∶1、引发剂用量为单体质量的0.1%、引发剂采取固体投料方式。在该反应条件下,AM/DMDAAC共聚物的特性黏数为4.92 d L/g、阳离子度为11.30%、收率为45.66%。将MnCl_2/NaHSO_3引发体系与过硫酸铵复配引发共聚,能进一步提高AM/DMDAAC共聚物的收率、特性黏数和阳离子度。
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.
文摘采用γ-射线辐照法,以壳聚糖、丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DMDAAC)为原料制备了壳聚糖-AM-DMDAAC接枝共聚物。考察了吸收剂量、单体AM与DMDAAC重量比、壳聚糖与总单体重量比、反应物浓度等因素对接枝共聚反应的影响。结果表明,随着吸收剂量的增大,接枝率和阳离子度上升,而接枝效率变化不大,吸收剂量为4 k Gy时最佳,接枝率、接枝效率和阳离子度分别为210.9%、96.1%和26.9%;接枝率和接枝效率随着AM与DMDAAC重量比的增加而提高,当AM与DMDAAC重量比为7:3时达到最大值,分别为182.6%和98.8%;随着壳聚糖与总单体重量比的降低,接枝率、接枝效率和阳离子度逐渐增加,当壳聚糖与总单体重量比为3:8时,其值分别为182.5%、94.9%和25.5%,接枝效果最好;接枝率、接枝效率和阳离子度随着反应物浓度的降低先上升后降低,醋酸最佳用量为100 m L。
