CAJ | 학술논문

以反相悬浮聚合法合成P(AANa/AMPS/DMDAAC)两性共聚高吸水树脂(SAP),并引发溶胀在SAP中的丙烯酸丁酯和丙烯酸进行原位共聚合,制备疏水改性高吸水树脂.将丁腈橡胶、改性高吸水树脂、补强剂和其他助剂借助混炼机混炼均匀,在硫化成型机上高温硫化制备吸水膨胀橡胶(WSR).研究盐溶液种类、盐溶液浓度以及环境温度对WSR的质量吸水膨胀倍率的影响,并对吸水后的WSR进行热重分析.结果表明:盐溶液中阳离子浓度越大,化合价越高,对WSR吸水性能影响越明显,吸液膨胀倍率越小;在对WSR进行一系列不同温度下的吸液性能研究时发现,WSR在120℃具有较好的吸水膨胀性能.在环境温度达到175℃时,WSR达到失水平衡.
이반상현부취합법합성P(AANa/AMPS/DMDAAC)량성공취고흡수수지(SAP),병인발용창재SAP중적병희산정지화병희산진행원위공취합,제비소수개성고흡수수지.장정정상효、개성고흡수수지、보강제화기타조제차조혼련궤혼련균균,재류화성형궤상고온류화제비흡수팽창상효(WSR).연구염용액충류、염용액농도이급배경온도대WSR적질량흡수팽창배솔적영향,병대흡수후적WSR진행열중분석.결과표명:염용액중양리자농도월대,화합개월고,대WSR흡수성능영향월명현,흡액팽창배솔월소;재대WSR진행일계렬불동온도하적흡액성능연구시발현,WSR재120℃구유교호적흡수팽창성능.재배경온도체도175℃시,WSR체도실수평형.
Superabsorbent polymer (SAP) of P(AANa/AMPS/DMDAAC) was synthesized by inverse suspension polymerization.Hydrophobic modification of this SAP was performed via in-situ polymerization with introduced monomer n-butyl acrylate and acrylic acid.Water swellable rubber (WSR) was prepared using modified SAP, NBR, reinforcing agent and other additives.The swelling ratio in mass of WSR in water or in aqueous solutions of diverse inorganic salt was measured.The effects of ionic concentration and temperature on the swelling ratio were investigated and thermogravimetric analysis (TGA) of swollen rubber was performed.The results showed that the swelling ratio of WSR remarkably decreased with higher ions valence and with increasing concentration of salt solution.The highest swelling rate was obtained at 120℃, both in water and in 0.9%NaCl solution.A water loss plateau of swollen WSR was observed with 0.9% NaCl solution as the absorbent solution.