Considerations For Choosing Pigments In Color Paste
Pigment yellow 180 manufacturer said, most of the paint color paste are talking about water-based color paste, in the water-based color paste industry, will use a variety of pigments to achieve the coloring function of water-based color paste, so the quality of the pigment directly affects the quality of the water-based color paste, so we choose the pigment used in water-based color paste should pay attention to what?
Pay attention to the adding amount of pigment
To ensure that the pigment is very stable in the water-based color paste system even in the state of high content. The adding amount of different pigments in water-based color paste is different, the water-based ink containing resin is generally 5~10%, resin-free organic pigment-based water-based color paste is generally 20~50%, resin-free inorganic pigment-based water-based color paste is generally 40~80%.
The amount of pigment should be added according to the application performance of the product, the particle state and size of the pigment and the equipment of water-based color paste dispersion to decide how much pigment should be added, but it is not recommended to add too much, because it may make the water-based color paste thickening and viscosity changes leading to the instability of the water-based color paste system.
Choose the pigment with good chemical resistance
If you want the chemical performance of water-based color paste coating is good, you have to choose the pigment with good chemical performance, light and weather resistance, acid and alkali resistance and other superior performance to be the raw material of color paste.
Choose the pigment with stable batch
To ensure the stability of water-based color paste pigment batch, at the same time, we have to choose the batch of stable pigment, once the standard is determined, we also have to strictly control the stability of the production process of the water-based color paste, in order to ensure the stability of the batch of water-based color paste.
Pay attention to the safety index of pigment
Pigment manufacturers should choose the pigment with high safety of raw materials when surface treatment of pigment is carried out. In the control of pigment synthesis process, it should be confirmed whether it is fully reacted and whether there is any residue of raw materials; in the selection of equipments, it should be chosen to use the equipments and pipelines with high safety in order to ensure that some microscopic unsafe components are not brought into pigment, such as residual substances of plasticizers of pigment packaging bags.
Choose the pigment with bright color and stable performance
Water-based color paste should choose the pigment with bright color and stable performance, so as to ensure the bright color and stable performance of water-based color paste and avoid the phenomenon of fading in the process of using.