Preparation of C@ZrSiO4 Inclusion Pigment Using Compound Colorants via Non-Hydrolytic Sol-Gel Method

C@ZrSiO4 inclusion pigment was prepared by using commercial carbon black RX8002C and phenolic resin (PF) as compound carbon source via non-hydrolytic sol-gel (NHSG) process. The RX8002C carbon could well disperse in phenolic resin solution, which developed a compound carbon source after calcination. Dense ZrSiO4 layer was coated on the carbon surface as a protector. The structure and morphology of samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The chromatic value of the pigments was measured by the CIE color system. The results show that the compound colorants can be well coated by ZrSiO4 dense layer to develop a black inclusion pigment. When the compound proportion is 1:4 and the compound colorants amount is 4wt.%, the chromatic value of the C@ZrSiO4 inclusion pigment is 27.54.

Preparation of ZrSiO4/C Inclusion Pigments by Nonhydrolytic Sol-Gel Methed Combined with the Process of Carbon Black Modification

nclusion pigments of ZrSiO4/C were prepared by nonhydrolytic sol-gel (NHSG) method combined with the process of carbon black modification. The crystalline phases, microstructure, functional groups on the surface of carbon black and chromatic value of the pigments were characterized by XRD, TEM, FTIR and Colorimeter, respectively. The surface structural changes of the carbon black modified by nitric acid and the influences of process parameters on the chromatic value of the pigments were also investigated. The results show that the process of carbon black modification enhances the affinity and binding force between carbon black and ZrCl4 sol, which contributes to improve the effect of carbon black wrapped by ZrSiO4. The ZrSiO4/C inclusion pigment were obtained after calcining at 1000 °C for 8 h, and the L*, a* and b* value is 53.88, 0.74, and 1.88, respectively.