Thermal Insulation Coatings in Energy Saving

Abstract

The surface temperature of object rises due to the accumulated heat when it absorbs solar energy, the excessive temperature caused by solar radiation will result in many inconveniences and even troubles in industrial production and daily life; in order to maintain the proper temperature of the object, a large amount of energy is consumed. The development of effective and economic thermal insulation materials is the key to meet the urgent needs for energy saving and emission reduction. In the face of variety of choices of thermal insulation materials, thermal insulation coating become more and more popular due to its good thermal insulation performance, economic, easy to use, and adaptability for a wide range of substrates. With the thermal insulation functional fillers (briefly called fillers in the following text) in coating system, the films can show a certain thermal insulation effect by reflecting, radiating, or isolating heat. As a result, when covered by thermal insulation coatings, the surface temperature of object would be greatly decreased. In this case, a large amount of energy consumed for cooling down the objects exposed to sunlight could be saved, which means the energy consumption can be reduced effectively by just covering with a thermal insulation coating on the surface of object.

Flame Retardant Coatings: Additives, Binders, and Fillers

“…Insulating coatings are classified into three types, which are flame retardant polymers [ 46 ], thermal barriers [ 81 ], and intumescent coatings [ 82 ]. Flame retardant polymers are organic resins (i.e., brominated polymers) or inorganic materials (i.e., geopolymers) that are inherently flame resistant and commonly fabricated as thin film of less than 5 mm thickness, coated on the composite substrate [ 46 ].…”

Corrosion-Resistant Hydrophobic Thermal Barrier Composite Coating on Metal Strip: A New Dimension to Steel Strips for Roofing Segment

“…In addition, composite coatings, with combination mechanisms, have been researched in order to achieve higher heat sealing. ,, However, such coatings have not been extensively researched extensively. In many reported works, attempts have been made to achieve thermal insulation by maximizing solar reflectivity, such as by using additives such as BaSO 4 up to very high 60 wt % in an acrylic coating .…”

Reflective Paint Consisting of Mesoporous Silica Aerogel and Titania Nanoparticles for Thermal Management

“…12−14 Thermal-barrier fillers with low thermal conductivity and light-reflective pigments with high reflectivity are important components in thermal insulation coatings. 15 The use of hollow or porous structures acting as thermal-barrier fillers could significantly reduce heat transfer due to the confined air molecules in the pore structures, while reflective pigments with hierarchical particle sizes featuring outstanding light reflectivity could reflect and scatter light effectively over a broad spectrum. 16−20 Thus, one intriguing question arises as to whether building paints can be engineered to realize a synergistic combination of superior thermal insulation and high light reflection, together with strong adhesion and wear resistance.…”

“…Thermal management is critical for energy-efficient buildings, vehicles, electronics, and data centers. − In the United States, ∼70% of the total electricity usage and 40% of total energy demand are consumed by building sectors, while heating and cooling account for ∼48% of such energy use. , A strategy to mitigate building energy consumption is to apply thermal and light management materials for the control of heat transfer and light reflectance. − In this aspect, paint coating materials for interior and exterior structures with high thermal insulation and high reflectance capabilities could play a critical role in thermal management and energy efficiency. Exterior paint materials would directly reflect solar radiation during the hot summer, while interior paint could insulate and maintain comfortable living temperatures inside through reducing heat transfer. − Thermal-barrier fillers with low thermal conductivity and light-reflective pigments with high reflectivity are important components in thermal insulation coatings . The use of hollow or porous structures acting as thermal-barrier fillers could significantly reduce heat transfer due to the confined air molecules in the pore structures, while reflective pigments with hierarchical particle sizes featuring outstanding light reflectivity could reflect and scatter light effectively over a broad spectrum. − Thus, one intriguing question arises as to whether building paints can be engineered to realize a synergistic combination of superior thermal insulation and high light reflection, together with strong adhesion and wear resistance.…”