Paint knowledge | standard of reflective thermal insulation coating

Core tip: reflective heat insulation coating is composed of base material, thermal reflective pigment, filler and additives Heat insulation is achieved by reflecting sunlight efficiently Thin layer thermal insulation reflective coating is the representative of this kind of coating Reflective heat insulation coating is a new type of temperature reducing coating which integrates reflection, radiation and hollow bead heat insulation The coating can highly reflect the infrared and ultraviolet rays of the sun in the range of 400nm-2500nm, prevent the heat of the sun from accumulating on the surface of the object, and automatically conduct heat radiation and cooling, radiate the heat on the surface of the object into space, and reduce the temperature of the object At present, the standard of reflective insulation coating Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Coating home news: reflective insulation coating is composed of base material, thermal reflective pigment, filler and additives Heat insulation is achieved by reflecting sunlight efficiently Thin layer thermal insulation reflective coating is the representative of this kind of coating Reflective heat insulation coating is a new type of temperature reducing coating which integrates reflection, radiation and hollow bead heat insulation The coating can highly reflect the infrared and ultraviolet rays of the sun in the range of 400nm-2500nm, prevent the heat of the sun from accumulating on the surface of the object, and automatically conduct heat radiation and cooling, radiate the heat on the surface of the object into space, and reduce the temperature of the object Standard for reflective insulation coatings At present, there are JG / t235-2008, GB / t25261-2003, gjb1670-1993, JC / t1040-2007, and astmc1483-04, which are the standards for building external solar radiation control coating According to the test of reflective heat insulation coating for building (GB / t25261-2003), the following results are obtained: 1 The solar reflection rate of white reflective heat insulation coating is equal to or greater than 0.8; 2 The hemispherical emissivity of reflective heat insulation coating is equal to or greater than 0.8; 1 The reflective heat insulation coating is tested: 1 Clean the 2 ㎡ cement ground with clear water first, and apply sunscreen heat insulation coating according to the coating construction requirements 2 Ten days later, choose a sunny day, and let the strong sun exposure for three hours, use the contact digital thermometer to test the center position of the coating The surface temperature is basically the same as the outdoor atmospheric temperature, that is to say, the coating hardly absorbs solar heat Fake sunscreen insulation paint, because of the absorption of solar heat, the coating temperature will be higher than the air temperature by more than 10 degrees The whole process flow of the construction scheme of reflective heat insulation coating is as follows: repair the wall surface → lay 6mm gray cake for reinforcement → apply heat insulation putty for the external wall A layer of 6mm thick → paste alkali resistant mesh cloth → apply a layer of 4mm thick external wall thermal insulation putty and polish it smooth and clean → roll coat one layer of alkali resistant sealing primer of reflective thermal insulation coating → spray one layer of reflective thermal insulation coating in the mechanism texture → roll coat two layers of reflective thermal insulation coating Let's learn about each process The key point of repairing the wall is as follows: for all kinds of putty or some potholes on the outer wall, sand paper should be fully used for polishing Be sure to dry it The first point of the performance of the reflective heat insulation coating is that the reflective heat insulation coating can inhibit the solar radiation heat, infrared radiation heat and shield heat conduction, and its thermal performance is better than other heat insulation materials The second point reflective thermal insulation coating can be applied to places with limited volume and weight (approved) 1mm thick reflective thermal insulation coatings reflect all thermal radiation of about 90%-95%, equivalent to 10mm thick R value of 20 polystyrene foam The third point is that the reflective heat insulation coating has the excellent functions of moisture-proof and water-proof steam, which can block the condensation of water vapor and prevent the oxidation of the surface of the insulator (such as steel pipe, boiler, etc.) It is also important that its heat insulation performance will not decline when it contacts the humid environment The formula for reflecting heat insulation coating is deionized water 18 dispersant 1 defoamer 0.5 thickener 1.5 R-902 titanium white powder 20.0803 heat reflective insulation powder 15 sericite 5 pure acrylic emulsion 37 film forming AIDS Decoration knowledge and effect drawing of fireproof coating,