| 有机硅聚合物共混改性环氧树脂水分散液的制备、表征及成膜后的性能 |
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| 引用本文： | 丁莉,王贵友,胡春圃,吴树森.有机硅聚合物共混改性环氧树脂水分散液的制备、表征及成膜后的性能[J].华东理工大学学报(自然科学版),2005,31(6):747-751. |
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| 作者姓名： | 丁莉 王贵友 胡春圃 吴树森 |
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| 作者单位： | 华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237;华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237;华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237;华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237 |
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| 基金项目： | 上海市科委纳米专项基础研究项目（0212nm008） |
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| 摘 要： | 用氨基硅油微乳液与水的原位分散方法,制备了有机硅聚合物共混改性接枝环氧树脂水分散液,采用FT—IR、ATR、TEM以及TGA等对该水分散液的粒子形态、粒径以及成膜后的物理性能进行了表征。实验结果表明：与未改性的水分散液相比,改性水分散液的粒径减小,粒径分布变宽,粘度增大。TEM照片表明：有机硅聚合物在分散过程中被包裹在环氧树脂内部,形成“核-壳”结构的复合颗粒。改性水分散液成膜后的疏水、疏油性能和热性能显著提高,表面能降低。膜的超薄切片TEM照片显示：有机硅聚合物在成膜过程中向表面取向与迁移,FT—IR与ATR的测试结果进一步证实它们在膜的表面富集。
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| 关 键 词： | 环氧树脂 氨基硅油微乳液 水分散液 表面性能 热性能 |
| 文章编号： | 1006-3080(2005)06-0747-05 |
| 收稿时间： | 2004-11-10 |
| 修稿时间： | 2004年11月10 |
Preparation and Characterization of Polysiloxane Modified Epoxy Resin Aqueous Dispersions of Their Films |
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| DING Li,WANG Gui-you,HU Chun-pu,WU Shu-sen.Preparation and Characterization of Polysiloxane Modified Epoxy Resin Aqueous Dispersions of Their Films[J].Journal of East China University of Science and Technology,2005,31(6):747-751. |
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| Authors: | DING Li WANG Gui-you HU Chun-pu WU Shu-sen |
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| Institution: | School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Polysiloxane modified epoxy resin aqueous dispersions were prepared by in-situ dispersing waterborne graft epoxy resin with amino-polysiloxane microemulsion.Properties of the modified aqueous dispersions and their films were studied.The modification resulted in dispersions of smaller particles,broader ranges of particle size,and higher viscosity.Observations by TEM(transmission electon(microscopy)) showed that polysiloxane was wrapped by the epoxy resin to form a "core-shell" structure.The water and oil repelleycy as well as the heat resistance of the modified film were significantly improved;the surface energy of the films was lowered.TEM photographs of the modified films suggested that the polysiloxane particles reoriented and migrated to the film surface during the film formation.Results of(ATR)(attenuated total refraction) and FT-IR(Fourier transform infrared) spectrum measurements confirmed the enrichment of polysiloxane on the modified surface film. |
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| Keywords: | epoxy resin polysiloxane microemulsion aqueous dispersion surface property thermal property |
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