采用单体浓度梯度加入法合成了具有梯度壳层的核壳结构,可用于木器涂料的硅丙乳液。考察了乳化体系、聚合工艺、有机硅预聚物的引入、软/硬单体比等因素对乳液和漆膜性能的影响,用透射电镜测定了乳胶粒子形态。研究表明：OP-10/SDS/MS-1为最佳乳化体系,有机硅预聚物与其他单体一次性混合引入,软/硬比为1∶2时,所制得乳液的综合性能良好。固含量为45%,成膜温度为48℃,附着力为1级,硬度为2H,乳胶粒子有明显的核壳结构。
Gradual core-shell silicone-acrylic emulsions for water-based wood coating were prepared by the gradual monomer dropping polymerization method.Influences of emulsifier,polymerization method,organosilicon oligomer,soft /hard monomer ratio etc on the performances of emulsions and coating films were investigated.Particle size distribution and morphology were analyzed by transmission electron microscopy（TEM）.The results show that emulsion with excellent properties could be prepared when the composite emulsifier system is OP-10/SDS/MS-1,organosilicon oligomer is totally mixed with other monomers,and the soft/hard monomer ratio is 1∶2.Solid content of emulsion is 45%,minimum film-forming temperature（MFFT） is 48℃,adhesion is grade 1,pencil hardness is 2H,emulsion particles have an obvious core-shell structure.
参考文献
| [1] | 王玉春,李海涛,张春雷,马建学.核壳乳液聚合合成硅丙乳液的稳定性影响因素[J].涂料工业,2008(01):37-40. |
| [2] | Ines de F. A. Mariz;fan S. Millichamp;Jose C et al.High performance water-borne paints with high volume solids based on bimodal latexes[J].Progress in Organic Coatings,2010,01(08):1-8. |
| [3] | B. Schuler;R. Baumstark;S. Kirseh et al.Structure and properties of muhiphase particles and their impact on theperformance of architectural coatings[J].Progress in Organic Coatings,2004,40:140-150. |
| [4] | 陈丽琼,刘杰,李玮,张黎明.有机硅改性丙烯酸酯乳液性能的研究[J].中山大学学报(自然科学版),2003(02):38-41. |
| [5] | 张光华,王义伟,朱军峰,崔萌.核壳型自交联聚丙烯酸酯乳液的成膜性能[J].高分子材料科学与工程,2009(01):71-74. |
| [6] | 郭睿岚,赵彬,寇奕,李效玉.多层核壳丙烯酸酯乳液的合成及其性能的研究[J].高分子材料科学与工程,2003(02):107-110. |
| [7] | 熊浩.梯度乳液聚合物的合成与研究[J].广东化工,2009(07):16-18. |
| [8] | 戈成岳,武玉民,宁汉生,李华,许军.硅-丙核/壳乳液的低温合成及表征[J].高校化学工程学报,2007(06):1038-1043. |
| [9] | 孟勇,翁志学,单国荣,黄志明,潘祖仁.核壳结构聚硅氧烷/丙烯酸酯复合乳液（Ⅰ）乳化剂对乳液聚合过程及粒径分布和粒子形态的影响[J].化工学报,2005(09):1794-1799. |
| [10] | 黄杰,曾幸荣,李红强,胡平,陈丽.单体及乳化剂组成对核壳型丙烯酸酯乳液性能的影响[J].精细石油化工,2010(01):31-35. |
| [11] | 刘国军,程不畏,张桂霞,刘俊龙,胡滨,李慧连.核壳型室温自交联聚丙烯酸酯木器漆乳液的制备[J].涂料工业,2008(10):15-18. |
| [12] | 叶丹滢 .丙烯酸酯核壳乳液成膜机理及涂膜性能的研究[D].北京化工大学,2009. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%