In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow beha...In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow behavior of the latexes,morphology of the obtained latex particles, dynamic viscoelastic behavior, tensilestrength and water resistance properties of the resulted copolymers were investigated.The experimental results show that with the addition of AHPS, stability of the emulsionis greatly improved that there appears no apparent precipitation dunring thepolymerization and storage at room temperature for 6 months and at -10℃ for fourmonths. Flow of the latexes follows the Bingham body laws, diameter of the latexparticles is about 0.6μn, of which is larger than that of by conventional emulsionpolymerization(0.12μm). In addition, not only water resistance of the copolymersobtained by emulsifier-free emulsion polymerization is greatly improved, but alsotensile strength is obviously enhanced.展开更多
采用反相乳液聚合法,以丙烯酰胺(AM)、丙烯酸(AA)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,过硫酸钠/亚硫酸钠为引发剂,失水山梨醇油酸酯和烷基酚聚氧乙烯醚为乳化剂,合成滑溜水压裂液用乳液型降阻剂;考察乳化剂和引发剂的用量、反应...采用反相乳液聚合法,以丙烯酰胺(AM)、丙烯酸(AA)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,过硫酸钠/亚硫酸钠为引发剂,失水山梨醇油酸酯和烷基酚聚氧乙烯醚为乳化剂,合成滑溜水压裂液用乳液型降阻剂;考察乳化剂和引发剂的用量、反应温度对单体转化率及产物性能的影响;采用FTIR和13C NMR等方法对产物进行表征。表征结果显示,产物为P(AM-AA-AMPS),黏均相对分子质量大于1×107。实验结果表明,合成降阻剂的适宜条件为:反应温度25℃、乳化剂用量3%(w)(基于乳液的质量)、引发剂用量0.025%(w)(基于单体的总质量),在此条件下单体转化率可达99.9%,乳液黏度为650 m Pa s,乳液固含量为35%(w);在清水中加入0.10%(w)的降阻剂,降阻率达到61.5%,剪切5 min时降阻率仅降至60.6%,且具有良好的抗剪切能力。展开更多
文摘In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow behavior of the latexes,morphology of the obtained latex particles, dynamic viscoelastic behavior, tensilestrength and water resistance properties of the resulted copolymers were investigated.The experimental results show that with the addition of AHPS, stability of the emulsionis greatly improved that there appears no apparent precipitation dunring thepolymerization and storage at room temperature for 6 months and at -10℃ for fourmonths. Flow of the latexes follows the Bingham body laws, diameter of the latexparticles is about 0.6μn, of which is larger than that of by conventional emulsionpolymerization(0.12μm). In addition, not only water resistance of the copolymersobtained by emulsifier-free emulsion polymerization is greatly improved, but alsotensile strength is obviously enhanced.
文摘采用反相乳液聚合法,以丙烯酰胺(AM)、丙烯酸(AA)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,过硫酸钠/亚硫酸钠为引发剂,失水山梨醇油酸酯和烷基酚聚氧乙烯醚为乳化剂,合成滑溜水压裂液用乳液型降阻剂;考察乳化剂和引发剂的用量、反应温度对单体转化率及产物性能的影响;采用FTIR和13C NMR等方法对产物进行表征。表征结果显示,产物为P(AM-AA-AMPS),黏均相对分子质量大于1×107。实验结果表明,合成降阻剂的适宜条件为:反应温度25℃、乳化剂用量3%(w)(基于乳液的质量)、引发剂用量0.025%(w)(基于单体的总质量),在此条件下单体转化率可达99.9%,乳液黏度为650 m Pa s,乳液固含量为35%(w);在清水中加入0.10%(w)的降阻剂,降阻率达到61.5%,剪切5 min时降阻率仅降至60.6%,且具有良好的抗剪切能力。
