The Application of Radiation Cooling Coating to LED thermal imaging
Radiation Heat Cooling Coating is a kind of coating that radiate
heat, which could send out the heat from the objects in the form of
Wave length so that to low the temperature of inside and outside of
objects. It can be used in vacuum environment and not subject to
surroundings What’s more it has obvious effectiveness in heat
cooling. When performing the function of radiation heat cooling,
the coating is of the characteristics of self-cleaning property,
non-corrosibility, waterproofness, fireproofing, insulativity, acid
and alkali stability and constructing convenience etc.
Radiation heat cooling coating adopts high-performance cooling
solution, which is of some special performance such as high visible
light, near infrared reflectance, thermal infrared emissivity and
stability. Meanwhile It is of good physical and chemical properties
as well as application property and various compound performance.
The working principle of this radiation solution is to produce
binding force by the condensate of inorganic colloidal
particles(less than 100nm). The addition of materials as carbon
nanotubes which of high pyroconductivity and radioactivity
increased the coefficient of thermal conductivity. The nonmaterial
component that make the coating surface smooth in macro view and
rough in micro view could greatly increase the contact area of heat
sink with outside, reduce the heat shield, significantly increased
the cooling effect.
At the same time, the adding of large quantity of various spinel as
Composite infrared radiator, which is transited by electron not
only increased the impurity level, improved the coefficient of
infrared radiation but also keeping the excellent performance such
as corresponding thermal stability, heat resistance, high strength,
corrosion resistance and abrasion resistance.
In order to overall improve the strength and stability of cooling
coating, we also add Rare Earth Oxide in it to improve the activity
of coating composition. REO is the preferred material for doping
and stabilizing coating structure.
Main Characteristics :
1.Radiation heat cooling coating is of high thermal conductivity and
large cooling surface area.Meanwhile within a wide wavelength range (1-20μm), it has high
emissivity, which can significantly improve the compound
performances as conduction, convection and radiation cooling.
2.Radiation heat cooling coating can operate steadily in high
temperature, including thermal and chemical stability, good weather
resistance and Acid and alkaline resistance.
3.Radiation heat cooling coating can strongly combine with metal and
ceramic substrate. It has enough mechanical strength, toughness and
will not peel off by the suddenly change of temperature.
4.Radiation heat cooling coating is of good coating process, which
make performance easy and convenient. It can protect the objects in
the long run due to its characteristics of abrasion resistance,
shock resistance and long service life.
5.Radiation heat cooling coating is a new type of environmental and
energy saving coatings. It does no harm to human body before and
Ⅳ. Coating parameters
Film color Multi colors
heat conductivity coefficient>=150w/mk
strength of extension2500kpa
reflectivity in visible region 85%
anti-corrosion property good
reflectivitynear infrared region80%
adhesive force Grde 1
300 ° k infrared hemisphere reflectivity90%
damp heat test2000 h
aging test2000 h
water resistence 72h
acid-base resistance property72h