Properties Of Ceramic Pigment, Common Role, Preparation Process, Identification Technology

Ceramic pigments are widely used in ceramics, the exterior wall tiles, whole body tiles, polished tiles, powder, different ceramic pigment and has decorative effect of different, the ceramic pigments have in common?
The concept of Ceramic Pigment, pigment or color material, is the base and solvent or additive is prepared into powder colored ceramic decorative material. Pigment = chromophore chromophore + flux as coloring matter and other raw materials.
Effect
It has good covering power, thermal stability;
◆ no bleeding and migration, excellent light fastness and weather ability
◆ with opacity good, insoluble in water and organic solvents;
◆ with stable quality, hair color and strong, easy to disperse, strong coloring, color is bright;
◆Chemical resistance excellent, and most of the thermoplastic and thermosetting resin compatibility
Nature
Powder, odorless gas, insoluble in water, soluble in acetone, insoluble in ethanol, insoluble in acid and alkali, no explosion danger, non-toxic, non radioactive, non flammable, non corrosive.

Process for preparing ceramic pigment
1, mixed
the final color colorant, greatly influenced by adding other ingredients in the colorants. Therefore, in order to make each batch of pigment from the same color, must be in accordance with the composition of weighing and mixing quality will be the same as the raw material of fine.
2, Calcinations
Calcinations is an important process for the Ceramic Colors, the purpose is to make the stabilization. In the calcinations process, because of raw material properties and hope to get the color is different, and different reaction. Using the temperature of calcinations temperature minimum and final products of the same color.
3, washing
The calcined pigment grinding, in order to remove all the soluble substances, should be washed. The uses of chromate pigments must be washed with hot water, such as leftover chromate soluble, appear uneven depth around the chrome color. If not the borate in addition to the net, will produce the film in color.
4, crushing
After washing with pan mill and ball mill, wet grinding required fineness. Pigment particle size is not specified, the general requirements for all through 300 mesh sieve. Crushing is insufficient due to uneven granularity and difficult to use, and the lack of coverage due to the speckle after firing. And crushing over as fine as dust, it can not fully fused in the glaze and become the cause of roll glaze.
How to distinguish between different colors
The most simple is the naked eye, simple to distinguish different color pigments.