Preparation of environmentally-friendly architectural heat insulation coatings based on polymer emulsions and the heat insulation aggregate

摘要

Water-based architectural heat insulation coating was studied to overcome the drawbacks of conventional inorganic silicate heat insulation coating. The heat insulation coatings were prepared with the method of mechanical agitation when the technology of emulsion blending was adopted, and the mixed organic polymer emulsions were used as binder of the coatings and the mixed heat insulating aggregates were applied as powder, and nanoscaled SiO_2 and TiO_2 were introduced, and some assistants were also added. Results showed that the prepared coating had excellent physical-chemical properties. The test of the authoritative inspection organization shows that coefficient of heat conductivity is 0.073 W/mK, which is lower by far than that of conventional heat-insulating materials. The time of artificial weathering is more than 1000 hours. Water temperature difference in the plastic container, which was coated with heat insulation coatings, represented the heat-insulating property of the coatings. The influences of components of mixed polymer emulsion, mass ratio of polymer emulsion to powder, component of heat insulating aggregates, particle size of heat insulating aggregates, nanoscaled SiO_2 and TiO_2 on the properties of the coatings were studied.