Selection of Carbon Black for Waterborne Inks

    With the development of the economy and the increasing demand for environmental protection, carbon black and fluffy carbon black treated with oil-free granulation can be used in water-based inks.
    The printing industry has put forward new requirements for non-toxic and pollution-free offset printing ink, and environmentally friendly offset printing ink has received widespread attention from users and has begun to be applied in packaging, newspapers, commercial printing, and other fields. Environmentally friendly offset printing ink has been widely used in countries such as the United States and Japan, but its application in China is still quite limited. There are technical factors involved, but the main reason is a lack of understanding.
    There are many types of ink, with different physical properties. Some are very thick and sticky, while others are quite thin. Its components can be divided into three major parts: the liquid component is called binder, while the solid component is pigment (pigment or dye) and various additives.
    Different inks have different drying methods; Different printing processes use different inks; Different substrate materials use different inks. The ink is classified according to its drying method, different printing processes, and substrate materials.
    The principle of using dark carbon black for water-based ink at Zhongbei Chemical Carbon Black Co., Ltd. is that the blackness should be good enough and the structure should not be too low, otherwise it will affect dispersibility and the content of oxygen-containing groups should be rich enough. Increasing the content of chemically adsorbed oxygen groups on the surface of carbon black particles, as these oxygen-containing groups increase, will endow carbon black with better performance. Not only can it greatly improve the blackness of carbon black, but the higher the level of these groups, the better their flowability.