Colored black talc powder in medium paint application effect

Our country industrial talc is divided into pink talc, white talc, green talc, grey talc and black talc by color five kinds. Talc comes in a variety of different colors, mainly depending on the color of the mineral with which talc is symbiotic. Black talc is the general name of black and gray black talc, and the main reason of black is the organic matter. The following figure shows the appearance colors of several commonly used talcum powders.

Different talc will show different application hue in the product, compare the primary color hue of different talc, different talc and LR-996 titanium dioxide compound matching color phase, as shown in the figure below; Common black talc has a low contribution to the color after mixing, which is close to the color of white talc, while BT black talc highlights a different gray phase and has a certain coloring ability.

At the same time refer to GB/T 13217.1-2020 "ink color and coloring force test method" standard detection method, by BT black talc L value change, characterize BT black talc coloring ability; It can be seen from the following figure that the coloring ability of BT black talc is much better than that of ordinary black talc.

BT black talc powder was selected to be applied in the paint of polyurethane gray. According to the ratio of talc and LR-996 titanium dioxide, the color of white talc mixed with C311 carbon black and the direct use of black talc mixed with titanium dioxide color were compared. As shown in the figure below, the color of black talc mixed with C311 white talc mixed with color is close to the effect.

Finger grinding color phase, no floating color situation

In summary, BT black talc powder has excellent coloring power that general talc powder does not have , especially if applied in gray medium coating paint, can effectively reduce the use of carbon black and a certain degree of color mixing process, playing a role in reducing costs and increasing efficiency.