It is being discussed that the effect of different couple-agents modifying aluminum flake pigment. We found that the γ-APS couple-agents is the best one and when the weight ratio of couple-agents:water:ethanol is l:2:30,the modified aluminum pigment get better dispersion stability in water than unmodified one.
Iron oxide pigment is a color pigment whose basic substance is the oxide of iron,such as red oxide, yellow iron oxide, black iron oxide, and brown oxide.
Based on the analysis of spectrum,density and color characteristic of screen primitive color printing ink,the tentative plan and basis of screen printing primitive color pigment was put forward and the yellow ink was taken as example to illustrate the selection of pigment.
Preparation and characterization of Cr2O3 system optically variable pigment
An optically variable pigment was produced by wet chemical method, where TiO2-coated mica with interference colors acted as the substrate materials.
The structure of the pigment was characterized by X-ray diffraction (XRD), and its optically variable effect was investigated by X-Rite MA86 II five angles spectrophotometer.
The color travel effect was sensitive to the change of substrate materials, and different backgrounds can influence the hue and the color travel effect of the pigment.
T3 had the lowest content of photosynthetic pigment; T1 and T2 did not differ from CK in the content of chlorophyll and carotenoid.
Results showed that optically variable pigments can be prepared by coating Cr2O3 on the surface of the pretreated TiO2-coated mica.
Photosynthetic pigments and photosynthetic products of endophyte-infected and endophyte-free Lolium perenne L.
In carotene-synthesizing yeasts, these Stressors decreased the amount of carotenoids produced and did not affect the ratio between carotenoid pigments (β-carotene, torulene, and torularhodin).
Melanin pigments from the fungiPaecilomyces variotii andAspergillus carbonarius
Pigments synthesized by the micromycetesPaecilomyces variotii andAspergillus carbonarius are true melanins.
The as-prepared encapsulated aluminum pigment was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS).
A possible application target is the improvement of the performance of aluminum pigment in waterborne coatings.
Stabilization of aluminum pigment in waterborne paints
The presence of the resins does not significantly affect the stabilization of the aluminum pigment at pH 10 by the corrosion inhibitors.
With the addition of corrosion inhibitors, the hydrogen volume evolved from aqueous aluminum pigment dispersions is surprisingly reduced by stirring.