Читать книгу The Rheology Handbook - Thomas Mezger - Страница 136

Legislative restrictions concerning industrial products increasingly are forcing the reduction of volatile organic compounds (VOC). As a result, solutions and dispersions containing organic solvents are more and more replaced by water-based dispersions; examples are coatings of all kinds such as paints and adhesives. Therefore, adapted rheology additives have been developed which of course also influence flow behavior, sometimes even considerably [3.59] [3.60] [3.61] [3.62]. Typical examples of nanostructures and microstructures of rheology additives are shown in Figure 3.32 [3.63]; the black bar in the Figure indicates the dimension of 100 nm to illustrate the order of magnitude when comparing the material systems.