化工学报 ›› 2024, Vol. 75 ›› Issue (9): 3348-3359.DOI: 10.11949/0438-1157.20240329

• 材料化学工程与纳米技术 • 上一篇    下一篇

VO2@KH550/570@PS复合薄膜的制备及其热致相变性能

张丽萍1(), 孟晓荣1,2(), 宋锦峰3, 杜金晶4   

  1. 1.西安建筑科技大学化学与化工学院,陕西 西安 710000
    2.陕西省膜分离技术研究院,陕西 西安 710054
    3.陕西环保产业集团有限责任公司,陕西 西安 710000
    4.西安建筑科技大学冶金工程学院,陕西 西安 710000
  • 收稿日期:2024-03-21 修回日期:2024-04-20 出版日期:2024-09-25 发布日期:2024-10-10
  • 通讯作者: 孟晓荣
  • 作者简介:张丽萍(2000—),女,硕士研究生,zhangliping0108@163.com
  • 基金资助:
    陕西省科技创新引导专项(2022QFY10-04)

Preparation of VO2@KH550/570@PS composite film and its thermally induced phase change properties

Liping ZHANG1(), Xiaorong MENG1,2(), Jinfeng SONG3, Jinjing DU4   

  1. 1.School of Chemistry and Chemical Engineering,Xi’an University of Architecture and Technology,Xi’an 710000,Shaanxi,China
    2.Shaanxi Academy of Membrane Separation Technology,Xi’an 710054,Shaanxi,China
    3.Shaanxi Environmental Protection Industry Group Co. , Ltd. , Xi’an 710000, Shaanxi,China
    4.School of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an 710000,Shaanxi,China
  • Received:2024-03-21 Revised:2024-04-20 Online:2024-09-25 Published:2024-10-10
  • Contact: Xiaorong MENG

摘要:

低成本和规模化的薄膜化生产技术是热致相变性二氧化钒VO2(M)普及应用于节能窗领域的关键。采用硅烷偶联剂γ-氨丙基三乙氧基硅烷/γ-甲基丙烯酰氧基丙基三甲氧基硅烷KH550/KH570对固相法合成的VO2(M)粉体进行表面改性,再经微乳液聚合得到聚苯乙烯(PS)修饰的VO2@KH550/570@PS微球(VSPS),以聚乙烯醇缩丁醛(PVB)、聚氯乙烯(PVC)、聚偏二氟乙烯(PVDF)为聚合物共混基材,系统研究表面修饰对VO2(M)基聚合物复合薄膜的性质及光学、隔热性能的影响规律。结果表明:偶联剂预修饰有利于提升乳液聚合过程中PS与VO2结合,交联剂亚甲基双丙烯酰胺(MBA)的引入增强了VSPS的化学稳定性。相比VO2,VSPS在聚合物溶液体系中的分散能力增加,得到更加均匀的聚合物复合薄膜。其中VS570PS/PVB的可见光透光率Tlum高达86.64%,太阳能调制效率ΔTsol较VO2/PVB提升了12倍,与空白玻璃温差达16℃。这种兼具高透光性和隔热性能的VSPS聚合物复合膜制备技术为VO2(M)的智能窗材料应用提供了有益的思路。

关键词: 热响应, VO2@KH550/570@PS, 复合薄膜, 微乳液聚合

Abstract:

Low-cost and large-scale thin-film production technology is the key to the popularization of thermally induced phase change vanadiam dioxide VO2(M) in the field of energy-saving windows. In this study, silane coupling agent KH550/KH570 was used to modify the surface of VO2(M) powder synthesized by solid phase method, and then polystyrene (PS) modified VO2@KH550/570@PS microspheres (VSPS) were obtained by microemulsion polymerization to systematically study the effect of surface modification on the properties and optical and thermal insulation performance of VO2(M)-based polymer composite films on the properties of VO2(M) based polymer films and the influence of optical and thermal insulation properties. The results show that the premodification of coupling agent is conducive to enhance the combination of PS and VO2 during emulsion polymerization, and the introduction of cross-linking agent MBA enhances the chemical stability of VSPS, which improves the dispersing ability of VO2 inorganic powders in the polymer solution system, and obtains more homogeneous polymer composite films. Among them, VS570PS/PVB has a high Tlum of 86.64%, a 12-fold improvement in ΔTsol compared to VO2/PVB, and the temperature difference between the blank glass is 16℃. This preparation technique of VSPS polymer composite film with both high light transmittance and heat insulation performance provides a useful idea for the application of VO2(M) as a smart window material.

Key words: thermo-responsive, VO2@KH550/570@PS, composite film, microemulsion polymerization

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