Reflective Paint Consisting of Mesoporous Silica Aerogel and Titania Nanoparticles for Thermal Management
- 15 June 2021
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Applied Nano Materials
- Vol. 4 (6), 6357-6363
- https://doi.org/10.1021/acsanm.1c01280
Abstract
Thermal insulation paint material is an energy-critical coating component for thermal management in energy-efficient buildings, vehicles, electronics, and data centers. Long-standing pursuits for the paint coating materials are high thermal insulation and light reflectance, mechanical durability, and wear resistance. Here we describe an aqueous-based hierarchical coating nanocomposite composed of mesoporous silica aerogel and titania nanoparticle pigment paint which exhibits a low thermal conductivity of 0.029 W/m K, a high visible reflectance of 90%, and a mechanical Young's modulus of similar to 4.86 MPa with a high abrasion resistance. The hierarchical and hydrophobic nanocomposite coatings show robust thermal cycling and thermal resistance, resulting in an equivalent cooling power of 928 W/m(2). The design and manufacturing principle reported here could extend to a variety of insulation coating materials to achieve energy efficiency and sustainability.Keywords
Funding Information
- U.S. Department of Energy???s Office of Energy Efficiency and Renewable Energy (EERE) under the Building Technology Office (BTO) (DE-EE0008675)
This publication has 34 references indexed in Scilit:
- Study on energy saving effect of heat-reflective insulation coating on envelopes in the hot summer and cold winter zoneEnergy and Buildings, 2012
- Highly reflective coatings for interior and exterior steel cladding and the energy efficiency of buildingsApplied Energy, 2011
- Visible Mie Scattering in Nonabsorbing Hollow Sphere PowdersNano Letters, 2011
- Plasmonics for improved photovoltaic devicesNature Materials, 2010
- Mott Transition in a Valence-Bond Solid Insulator with a Triangular LatticePhysical Review Letters, 2007
- Solar spectral optical properties of pigments—Part II: survey of common colorantsSolar Energy Materials and Solar Cells, 2005
- Preparation of Micrometer‐ to Sub‐micrometer‐Sized Nanostructured Silica Particles Using High‐Energy Ball MillingJournal of the American Ceramic Society, 2004
- Architecture indigenous to extreme climatesEnergy and Buildings, 1996
- Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanismNature, 1992
- Radiative cooling of TiO2 white paintSolar Energy, 1978