coating? Can the gloss of the coating be changed?

For ordinary engineering applications, the gloss of the coating is generally maintained at a relatively moderate level, and the required gloss can be achieved by changing the surface state of the coating through simple physical and chemical methods; but for some special needs, when the coating is required to have high or low gloss, it must take corresponding technical measures to change the gloss of the coating.

1) For general gloss coatings, different gloss coatings can be obtained by changing the surface state of the larger gloss coating and adjusting the microscopic roughness of the coating surface, thereby changing the light scattering characteristics of the coating;

2) When the gloss of the coating is very high, changing the surface state can not effectively change the gloss of the coating, the gloss of the coating can be changed by changing the refractive index of the pigment in the coating; to 20 ° gloss, for example, when the refractive index of the coating increases from 1.7 to 2.2, the Fresnel reflectivity doubles, which can effectively increase the gloss of the coating.

3) When the gloss of the coating is very low, it is difficult to effectively reduce the gloss of the coating by adding matting powder. The diffuse reflectance of the coating can be changed by changing the absorption reflectance of the pigment or filler in the coating, and the low gloss coating can be obtained.