Silicone resin emulsion coatings:The strength profile of the silicone resin network in paint microstructures

摘要

Since their introduction in 1963,silicone resin emulsion paints (SREP~*) have developed into a modern facade coating system.Silicone resin emulsion combine the good properties of mineral and synthetic resin-bound facade-coating systems in an ideal way.The strength of the silicone resin within the paint microstructure stems from its three-dimensionally cross-linked,modified-quartz structure,the silicone resin network.High-resolution SEM(scanning electron microscopy) demonstrates how silicone resins form nanoscale network structures that can envelop fillers and perfectly line pores without sealing them.The silicone resin network strengthens the pores and renders them water-repellent.The high affinity of the silicone resin for polar,mineral fillers,even for calcium carbonate substrates,results from its unique molecular structure of inorganic/organic hybrid nature.