When pigment particles disperse in the medium, and the diameter of them will be smaller than the half wavelength of the light, the diffraction will happen with an effect of transparence tinction. The transparent iron oxide pigment with particle diameter of nanometer-level is exactly a unique material of the kind based on the above theory. The transparent iron oxide possesses sound chemical stability for maintaining the chemical structure and crystal form of the iron oxide pigment, such as acid, alkali, solvent, water and oil resistance, and the transparent iron oxide red has the heat stability even more than 300°C.
It is well known that the iron oxide pigment possesses the best light stability, neverthless the transparent iron oxide with the particle diameter of nanometer lever has stronger ability of assimilating the ultraviolet, with the light stability, the transparent iron oxide pigment can also improve the ageing-resistance ability of all kinds of high polymer by assimilating ultraviolet. The transparent iron oxide changes the assimilating and scattering property of the visible portion of the commonness ferric oxide, which results in a fairly high degree of saturation and tinting strength. //
it is widely used in Wood coatings, automobile coatings, plastic coatings, metal coatings, architectural coatings, artists' color, etc.
Transparent Iron Oxide Pigments’ Main Technical Properties
|
Code |
Y19 |
R28 |
|
Appearance |
Yellow Powder |
Red Powder |
|
Transparency |
Similar |
Similar |
|
Relative Tinting Strength% |
≥95 |
≥95 |
|
105℃Volatile Matter% |
≤3 |
≤3 |
|
Water Soluble Matter% |
≤0.5 |
≤0.5 |
|
Residue on 45um Mesh% |
≤0.1 |
≤0.1 |
|
PH value |
3-5 |
3-5 |
|
Oil absorption g/100g |
30-40 |
30-40 |
|
Fe203 Content% |
≥83.0 |
≥92.0 |
