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Fuktegenskaper hos en funktionsfärg med termokeramisk membran-teknologiGråby, Marcus, Martinsson, Christian January 2018 (has links)
The Swedish company ThermoGaia AB has sole sales rights in the Nordic region for ThermoShield® brand, which the company markets under its own brand Termoskydd. The paint is marketed with properties such as energy savings by heat reflection and solves moisture problems because the paint can both be diffusion open or closed due to climatic conditions and function like a variable vapor barrier. These unique features come from a combination of a special binder with ceramic beads. The unique properties of the color at varying humidity conditions are in particular of interest to study and evaluate, which is also the purpose of the this study. By experimentally creating two different closed climates with differentiated relative humidity between both sides of a material, concentration differences will occur in the prevailing vapor concentrations provided that constant temperature prevails. Variations in vapor levels create pressure differences that become the driving force of the moisture transport that takes place in the form of diffusion that occurs onedimensional. The method used in the study is a modified version of the standardized cup method. Periodic measurements of weight differences continued until stationary conditions were reached. The collected measurement data is then used to calculate the water vapor migration. The result of the study shows that the color has the ability to have a lower resistance if the surrounding climate has low relative humidity, the greater the concentration difference between the vapors. When the surrounding climate instead has a high relative humidity, the color showed a higher resistance when the greatest concentration difference occurs. The study's conclusion from the problem formulation is that the causal relationship between the relative humidity and water vapor migration for the color tends to change the resistance, depending on the vapor content of ambient air, provided that stationary conditions prevail.
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