蜡壁高吸水树脂微胶囊化工艺研究

【作者】 段成金；

【导师】 张恒；

【作者基本信息】 郑州大学 ， 材料学， 2007， 硕士

【摘要】 本文综述了高吸水树脂和微胶囊技术在国内外的研究现状和发展趋势，以玉米淀粉和丙烯酸为原料，制备出了淀粉接枝丙烯酸高吸水树脂。研究了其密度、吸水性能、吸水体积膨胀率等；并以该树脂为芯材、石蜡为壁材，用熔融分散冷凝法制备出了蜡壁高吸水树脂微胶囊。在此基础上，本文还研究了所制备的微胶囊的表观形貌、粒径及其分布、密度和吸水性能等物化性能。实验表明，本文所制备的微胶囊具有能悬浮在水中、囊壁在遇热时可立即熔化、囊芯可迅速吸水堵塞管道的功能。此外，本文还利用热力学、动力学、高分子物理等基础理论知识对制备微胶囊的分散机理、微胶囊的成型过程、微胶囊的作用原理进行了深入研究。更多还原

【Abstract】 The research status and development trend about the super absorbent polymer and the microencapsuling technology at home and abroad were summaried in this paper. The super absorbent polymer coming from the starch grafting acrylic acid has been prepared by the cornstarch and the acrylic acid as its raw material. And the density, absorbent performance, volume expansion rate of the polymer after absorbing were investigated in details. The microcapsule was made by the methods of melting-dispersion-condensation using this polymer as the core and the olefin as the wall. Based on this, in the paper was also studied the apparent pattern, size distribution, density and the hygroscopic property and so on. The results show that the microcapsule can suspend in the water, the wall material can melt as soon as dipping into the hot water and the core material can absorb water rapidly to plug the pipe. Additionally, the dispersing mechanics during the microencapsuling, the molding process and the action function of this microcapsule was studied deeply with the help of the basic theory such as thermodynamics, kinetic and macromolecular physics.更多还原