Abstract
This article reports the design and manufacture of colored microcapsules with specific functions and their application in architectural interior wall coating. Utilizing reactive dyes grafted SiO2 shell to encapsulate paraffin through interfacial polymerization and chemical grafting methods, this experiment successfully synthesized paraffin@SiO2 colored microcapsules. The observations of surface morphology demonstrated that the colored microcapsules had a regular spherical morphology and a well-defined core-shell structure. The analysis of XRD and FT-IR confirmed the presence of amorphous SiO2 shell and the grafting reactive dyes, and the paraffin possessed high crystallinity. Compared with pristine paraffin, the thermal conductivity of paraffin@SiO2 colored microcapsules was significantly enhanced. The results of DSC revealed that the paraffin@SiO2 colored microcapsules performed high encapsulation efficiency and desirable latent heat storage capability. Besides, the examinations of UV-vis and TGA showed that the paraffin@SiO2 colored microcapsules exhibited good thermal reliability, thermal stability, and UV protection property. The analysis of infrared imaging indicated that the prepared latex paint exhibited remarkable temperature-regulated property. Compared with normal interior wall coatings, the temperature was reduced by about 2.5 °C. With such incomparable features, the paraffin@SiO2 colored microcapsules not only appeared well in their solar thermal energy storage and temperature-regulated property, but also make the colored latex paint coating have superb colored fixing capabilities.
Highlights
In recent years, numerous researchers have developed many building energy-saving technologies, in which the application of thermal energy storage technology in building materials has become the hotspot of research and attention [1,2,3]
Novel paraffin@SiO2 colored microcapsules that can be applied in interior wall coating are designed and manufactured through interfacial polymerization and chemical grafting methods
The observations of surface morphology demonstrated that the colored microcapsules had a regular spherical morphology and a well-defined core-shell structure
Summary
Numerous researchers have developed many building energy-saving technologies, in which the application of thermal energy storage technology in building materials has become the hotspot of research and attention [1,2,3]. The combination of organic PCMs and inorganic shell materials can improve the energy storage capacity and thermal performance. It can be concluded that the prepared stucco/microencapsulated paraffin composite materials, as a thermal energy storage material, are expected to reduce energy consumption in construction applications and have broad prospects. These phase change microcapsules endow the wall coating with heat storage properties, most of them have a single color, which is difficult to meet the aesthetic needs of modern people. The application of paraffin@SiO2 colored microcapsules to building materials can alleviate energy problems and improve thermal comfort, and greatly increase the color diversity of interior wall coatings
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
