Infrared radiation metallic pigments

Metallic pigments reflect infrared radiation and hence are able to reduce the heat emission from a surface coated therewith, according to Kirchhoff s law 1-/J(A.) = e(X,), where R = reflectance and e = emissivity. Hybrid polymers are superior to commercially available binders, considering both miscibility with IR-reflective pigments and the achievable degree of filling. However, in order not to affect the optical function of the pigments, the infrared absorption of the binder should also be as... 

Some of the metallic inorganic pigments are used for their non-optical effects. They can provide a complete optical barrier against visible, infrared (IR) and UV radiation. 

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