What role do hollow glass beads play in paints and coatings

Glass microspheres have a relatively small specific surface area and low oil absorption rate, which can greatly reduce the use of other production components in the paint. The vitrified surface of glass microspheres is more resistant to chemical corrosion and has a reflective effect on light. Therefore, the paint coating has anti-fouling, anti-corrosion, anti-ultraviolet, anti-yellowing and anti-scratch effects. The tightly arranged hollow glass microspheres contain a thin gas inside, and its thermal conductivity is low, so the paint coating has a very good thermal insulation effect. Hollow glass microspheres can effectively enhance the flow and leveling of the coating. The gas contained in the hollow glass microspheres has good resistance to cold and heat shrinkage, thereby enhancing the elasticity of the coating and greatly reducing the cracking and shedding of the coating caused by thermal expansion and contraction. Under the premise of high filling amount, the viscosity of the coating does not increase significantly, so the amount of solvent used can be reduced, which can reduce the emission of toxic gases during the use of the coating and effectively reduce the VOC index.