采用全氟丁基磺酸钾阻燃剂(PPFBS)与高岭土复配,成功制备了具有0.8 mm V-0阻燃等级的聚碳酸酯(PC),研究了PPFBS和高岭土对PC热稳定性、燃烧特性和力学性能的影响。结果表明,PPFBS对PC的阻燃效果主要取决于促进PC交联成炭和引发PC降解之...采用全氟丁基磺酸钾阻燃剂(PPFBS)与高岭土复配,成功制备了具有0.8 mm V-0阻燃等级的聚碳酸酯(PC),研究了PPFBS和高岭土对PC热稳定性、燃烧特性和力学性能的影响。结果表明,PPFBS对PC的阻燃效果主要取决于促进PC交联成炭和引发PC降解之间的平衡,而高岭土提高了PC燃烧炭层的稳定性,使其热释放速率更加平缓。除此之外,高岭土对PPFBS阻燃PC的力学性能也有一定的改善作用。展开更多
Slightly crosslinked monodisperse poly（maleic anhydride-cyclohexyl vinyl ether-divinylbenzene） （MA-CHVE-DVB） microspheres were prepared via precipitation polymerization while using 2,2- azobisisobutyronitrile as a...Slightly crosslinked monodisperse poly（maleic anhydride-cyclohexyl vinyl ether-divinylbenzene） （MA-CHVE-DVB） microspheres were prepared via precipitation polymerization while using 2,2- azobisisobutyronitrile as an initiator in a mixture of methyl ethyl ketone and n-heptane without any stabilizer. The number-average diameter of the resultant poly（MA-CHVE-DVB） microspheres ranged from 0.478 to 1.386 μm with a polydispersity index of 1.00 to 1.02 that depended on the feed ratios of the MA/CHVE/DVB monomers. The introduction of one electron donor monomer cyclohexyl vinyl ether strongly affected the yield, size, and morphology of these slightly crosslinked microspheres. Quinoline- type chelating resins were obtained after combining the poly（MA-CHVE-DVB） with 8-hydroxyquinoline; the adsorption properties of these materials were measured through their ability to remove Cu^2＋ ions from water. The poly（MA-CHVE-DVB） microspheres with low degrees of crosslinking provided more effective functional groups and therefore better ion removal capabilities. These slightly crosslinked microspheres may have applications in water treatment as well as in sensing and drug delivery.展开更多
文摘采用全氟丁基磺酸钾阻燃剂(PPFBS)与高岭土复配,成功制备了具有0.8 mm V-0阻燃等级的聚碳酸酯(PC),研究了PPFBS和高岭土对PC热稳定性、燃烧特性和力学性能的影响。结果表明,PPFBS对PC的阻燃效果主要取决于促进PC交联成炭和引发PC降解之间的平衡,而高岭土提高了PC燃烧炭层的稳定性,使其热释放速率更加平缓。除此之外,高岭土对PPFBS阻燃PC的力学性能也有一定的改善作用。
基金The financial supports from the National Science Foundation of China(Grant No.20774037 and 21304037)Shandong Excellent Young Scientist Research Award Fund(No.BS2013CL039)
文摘Slightly crosslinked monodisperse poly（maleic anhydride-cyclohexyl vinyl ether-divinylbenzene） （MA-CHVE-DVB） microspheres were prepared via precipitation polymerization while using 2,2- azobisisobutyronitrile as an initiator in a mixture of methyl ethyl ketone and n-heptane without any stabilizer. The number-average diameter of the resultant poly（MA-CHVE-DVB） microspheres ranged from 0.478 to 1.386 μm with a polydispersity index of 1.00 to 1.02 that depended on the feed ratios of the MA/CHVE/DVB monomers. The introduction of one electron donor monomer cyclohexyl vinyl ether strongly affected the yield, size, and morphology of these slightly crosslinked microspheres. Quinoline- type chelating resins were obtained after combining the poly（MA-CHVE-DVB） with 8-hydroxyquinoline; the adsorption properties of these materials were measured through their ability to remove Cu^2＋ ions from water. The poly（MA-CHVE-DVB） microspheres with low degrees of crosslinking provided more effective functional groups and therefore better ion removal capabilities. These slightly crosslinked microspheres may have applications in water treatment as well as in sensing and drug delivery.
