-
E-mail
li.fu@perkinelmer.com
- Phone
-
Address
1670 Zhangheng Road, Zhangjiang High tech Park, Shanghai
PerkinElmer Enterprise Management (Shanghai) Co., Ltd
Material Vision | Application of UV/Vis/NIR Spectrophotometers in Reflective Thermal Insulation Coatings
Date: 2025-12-19Read: 0
background
Reflective thermal insulation coatingis caused byBase materials, heat reflective pigments, fillers, and additives, etcform. Thermal insulation is achieved by efficiently reflecting sunlight. Reflective insulation coating is a combination of reflection, radiation, and hollow microsphere insulationYuA new type of integrated cooling coating that can highly reflect solar infrared and ultraviolet rays in the range of 400nm-2500nm, preventing the accumulation of heat from the sun on the surface of the object and automatically radiating heat to cool down the object. The heat on the surface of the object is radiated into the air, reducing the temperature of the object. Even on cloudy days and nights, the coating can radiate heat to lower the temperature. At the same time, hollow microspheres with extremely low thermal conductivity are placed in the coating to isolate the transfer of heat energy. Even at high atmospheric temperatures, it can block external heat and conduct it to the interior of the object,Three major benefitsEnsured the cooling of the coated object and ensured that the internal space of the object could maintain a long-lasting constant temperature.
1
Thermal insulation and sun protection coatings can lower the surface temperature of objects by more than 20 ℃ in strong sunlight, and can cool down to more than 3 ℃ or lower it to the same temperature as the atmosphere on cloudy days and nights.
2
Coatings have excellent waterproof and leak proof effects on objects with small cracks when applied. There are multiple colors of coatings to choose from, and different colors of room temperature cooling coatings can be applied according to different color requirements. In addition, the coatings are smooth and flat after application, with good hydrophobicity and self-cleaning performance. Therefore, room temperature cooling coatings are a new type of high-efficiency cooling, thin-layer, decorative, self-cleaning, waterproof, moisture-proof, UV aging resistant, acid and alkali resistant, and anti-corrosion energy-saving and long-life coatings.
3
Room temperature cooling coatings can be widely used in industries such as construction, chemical, petroleum, power, metallurgy, shipbuilding, textiles, storage, transportation, aerospace, etc. to cool down, save energy, and create comfortable living and working environments for humans.
In response to this, measures have been takenGB/T 31389-2015 "Technical Conditions and Evaluation Methods for Heat Reflective Materials for Exterior Walls and Roofs of Buildings"Used to evaluate the thermal reflection performance of coatings for building exterior walls and roofs. Among them, the standards includeBrightness value (L *), solar reflectance, and near-infrared reflectanceNeed to use the information in this articleUV/Visible/Near Infrared Spectrophotometer Testing.
Experimental Method
Select as shown in Figure 1PerkinElmer's Lambda 1050+high-end UV/Vis/NIR spectrophotometerEquipped with a 150mm optical polytetrafluoroethylene inner wall coating integrating sphere for testing the coating plate. The samples are all coated plates. Place the coated plate at position A behind the integrating sphere in Figure 1 to test the reflectivity of the coating on the surface of the coated plate.
Figure 1
Test parameter settings
Scanning method:Full band scanning (Scan)
Scanning band range:2500nm-300nm
Data interval:5nm
ordinateR% (reflectivity)
Integral time:0.2 seconds in the UV visible region and 0.2 seconds in the near-infrared region
Slot width:2nm in the UV visible region, Servo in the near-infrared region (servo mode, which automatically adjusts the slit size)
Test method:Place the sample behind the integrating sphere to test the total reflectance spectrum. After testing, the software automatically calculates the brightness value (L *), solar reflectance, and near-infrared reflectance.
Tested sample spectra and results
The measured curves of samples 1 # -6 # are shown in Figures 2-7
1 # Sample Reflectance Curve
Figure 2(Click to view large image)
2 # Sample Reflectance Curve
Figure 3 (click to view larger image)
3 # Sample Reflectance Curve
Figure 4 (click to view larger image)
4 # Sample Reflectance Curve
Figure 5 (click to view larger image)
5 # Sample Reflectance Curve
Figure 6 (click to view larger image)
6 # Sample Reflectance Curve
Figure 7 (click to view larger image)
Slide down to view all the content of the sample's measured curve
The software automatically calculates the results as shown in Figure 8:
Figure 8 (click to view larger image)
PerkinElmer Lambda 1050+Configure a 150mm integrating sphere withhigh precisionThe testing level can accurately test the reflectivity values of coatings at various wavelengths in the 300-2500nm range, and through the software's built-in programming function, the corresponding brightness value (L *), solar reflectance, and near-infrared reflectance can be directly read out after scanning the curve.
Follow us
Welcome to clickRead the original textSubmit requirements