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How to identify the reflection heat insulation coating quality
by：Opal
2021-01-18
Reflective thermal insulation coating is real or fake?
the reflection heat insulation coating is widely used in building energy conservation engineering, appeared on the market of false reflection heat insulation coating or inferior reflection heat insulation coating, some of which it is difficult to distinguish between true and false. From the point of view of reliability. Is very complex. Apparatus and methods of the general as long as there is reliable detection of reflectivity and emissivity of hemisphere. In reality it is impossible to do so. Here are some simple ways: the energy saving effect of heat insulation coatings, reflectivity,
measured by hemisphere of emissivity. Generally has the following methods: first, 2 - in the sun 3 hours, feel with the hand temperature change is obvious. The real reflection heat insulation coatings with low temperature and reference. If the same colour, sun 2 - Three hours came out. Real reflection heat insulation coating has obvious cool and refreshing feeling. Summer temperatures slightly higher than the body temperature. Is not hot. And false reflection heat insulation coating will feel coating temperature is very high, in the summer of reflection heat insulation coating surface temperature around 40, light color around 45. Generally and the temperature is almost the same, that reflected heat insulation paint coating is not heat. Will be higher than the ordinary coating temperature, average temperature coating in 50 - 60, dark coating can reach 70.
infrared thermometer testing is very reasonable and convenient. On the market of portable infrared temperature tester, can measure more accurate and high temperature in summer season coating surface temperature; East, south and west of the temperature measuring time at 1:00 am at 10:30 in the morning, afternoon and 15:00 PM, temperature change is obvious. If is white paint, then there must be at least 1 - true paint The difference of 2 degrees. Surface temperature difference is small, the key is reflective thermal insulation coating and cooling fast, launch infrared hemisphere, dissipate wall temperature quickly, achieve energy saving effect. Especially the light reflection heat insulation coatings, true and false reflection heat insulation coating temperature difference will be in 3 - 6 degrees ( And paint) 。
inferior reflection heat insulation coating has several; Don't need or less high cost with hollow glass bead, infrared dye materials, reduce the cost. ； Reduce the makings: emulsion,; Reduce the dosage of titanium dioxide and other methods to reduce the cost of production.
common reflection heat insulation coating production cost is very high. If the market reports reflect heat insulation coating and the quality of the products is very low, there will be a certain problem. The first; Reflective insulation coating must accord with standard of GB/T9755 outstanding exterior wall coating. Second, the service life of current local rules suggest reflective thermal insulation coating should be in 10 years. The above requirements are as follows: poor reflection heat insulation coating of energy-saving effect was not up to standard; Use half a year after the reflectivity is less than 50%, the resistance to ageing, had significant effect on the fouling, scrub resistance, seriously affect the service life of the coating and the energy saving effect.
the reflection heat insulation coating is widely used in building energy conservation engineering, appeared on the market of false reflection heat insulation coating or inferior reflection heat insulation coating, some of which it is difficult to distinguish between true and false. From the point of view of reliability. Is very complex. Apparatus and methods of the general as long as there is reliable detection of reflectivity and emissivity of hemisphere. In reality it is impossible to do so. Here are some simple ways: the energy saving effect of heat insulation coatings, reflectivity,
measured by hemisphere of emissivity. Generally has the following methods: first, 2 - in the sun 3 hours, feel with the hand temperature change is obvious. The real reflection heat insulation coatings with low temperature and reference. If the same colour, sun 2 - Three hours came out. Real reflection heat insulation coating has obvious cool and refreshing feeling. Summer temperatures slightly higher than the body temperature. Is not hot. And false reflection heat insulation coating will feel coating temperature is very high, in the summer of reflection heat insulation coating surface temperature around 40, light color around 45. Generally and the temperature is almost the same, that reflected heat insulation paint coating is not heat. Will be higher than the ordinary coating temperature, average temperature coating in 50 - 60, dark coating can reach 70.
infrared thermometer testing is very reasonable and convenient. On the market of portable infrared temperature tester, can measure more accurate and high temperature in summer season coating surface temperature; East, south and west of the temperature measuring time at 1:00 am at 10:30 in the morning, afternoon and 15:00 PM, temperature change is obvious. If is white paint, then there must be at least 1 - true paint The difference of 2 degrees. Surface temperature difference is small, the key is reflective thermal insulation coating and cooling fast, launch infrared hemisphere, dissipate wall temperature quickly, achieve energy saving effect. Especially the light reflection heat insulation coatings, true and false reflection heat insulation coating temperature difference will be in 3 - 6 degrees ( And paint) 。
inferior reflection heat insulation coating has several; Don't need or less high cost with hollow glass bead, infrared dye materials, reduce the cost. ； Reduce the makings: emulsion,; Reduce the dosage of titanium dioxide and other methods to reduce the cost of production.
common reflection heat insulation coating production cost is very high. If the market reports reflect heat insulation coating and the quality of the products is very low, there will be a certain problem. The first; Reflective insulation coating must accord with standard of GB/T9755 outstanding exterior wall coating. Second, the service life of current local rules suggest reflective thermal insulation coating should be in 10 years. The above requirements are as follows: poor reflection heat insulation coating of energy-saving effect was not up to standard; Use half a year after the reflectivity is less than 50%, the resistance to ageing, had significant effect on the fouling, scrub resistance, seriously affect the service life of the coating and the energy saving effect.
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