高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (12): 2923.

• 研究论文 • 上一篇    

硅丙型核壳结构乳胶粒子的制备及成膜过程

穆元春,李晓晨,邱藤,何立凡,张胜文,李效玉   

  1. 北京化工大学材料学院乳液聚合研究室, 碳纤维和功能高分子教育部重点实验室, 北京 100029
  • 收稿日期:2010-11-29 修回日期:2011-01-11 出版日期:2011-12-10 发布日期:2011-11-25
  • 通讯作者: 李效玉 E-mail:lixy@mail.buct.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50703002)和北京化工大学研究生科研创新基金(批准号: 09Ma007)资助.

Preparation of the Core-Shell Silicone-acrylic Latex and Its Film Formation Mechanism

MU Yuan-Chun, LI Xiao-Chen, QIU Teng, HE Li-Fan, ZHANG Sheng-Wen, LI Xiao-Yu*   

  1. Group of Emulsion Polymerization, School of Materials Science and Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2010-11-29 Revised:2011-01-11 Online:2011-12-10 Published:2011-11-25
  • Contact: LI Xiao-Yu E-mail:lixy@mail.buct.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50703002)和北京化工大学研究生科研创新基金(批准号: 09Ma007)资助.

PDF (PC)

被引次数

23

摘要： 采用分步乳液聚合方法, 分别在不同步骤中将乙烯基硅氧烷单体作为共聚单体引入聚丙烯酸酯类乳液共聚合体系中, 制备出具有窄分布多层核壳结构形态的硅丙型乳胶粒子. 利用透射电子显微镜(TEM)表征, 乳胶粒子具有硅丙型核壳结构; 动态激光散射(DLS)分析得到的乳胶粒子的直径与TEM数据相符; 同时由多频调制差示扫描量热(TOPEM-DSC)技术分析得到的乳胶粒子的3个玻璃化转变温度与实验设计相符, 证实乳液粒子的核壳结构; 利用Horus成膜仪对乳胶粒子成膜过程进行全程监控. 利用多种助剂制得水性木器涂料, 其漆膜的硬度、耐丙酮性、耐水性、耐醇性及耐压痕等性能优异.

关键词: 核壳结构, 多层结构, 硅丙型乳液, 成膜

Abstract: We describe a method via transition emulsion polymerization for the synthesis of phase-separated polymer latex with multilayer core-shell(MLCS) morphology. We used four-step process emulsion polymerization for the preparation of MLCS latex. The acrylic esters were employed as the main monomers for the core and the shell of the latex, which was copolymerized by vinyl siloxane monomer. The transmission electron micrograph(TEM) and dynamic light scattering(DLS) methods were applied to characterize the MLCS emulsion. The core-shell silicone-acrylic structure was clearly shown in the TEM image, and the structure of the MLCS latex particles which contained three glass transition temperatures was further proved by the stochastic temperature-modulated-differential scanning calorimetry(TOPEM-DSC). The DLS analysis show that the average diameter and shells thickness of MLCS latex are corresponding to the TEM image. The whole process of the film formation was carried out using the Horus film formation analyzer. On this basis, the water-based coating with various auxiliary agents was prepared. The film performances are excellent, such as hardness, acetone resistance, water resistance, alcohol resistance, and indentation resistance.

Key words: Core-shell structure, Multilayer structure, Silicone-acrylic emulsion, Film formation

TrendMD: