What is the reason for Luminous powder blackening in injection molding? Talk about how to solve the problem.

The light plastic masterbatch is a plastic masterbatch with self-luminous function. The luminous plastic masterbatch is deep processed from luminous powder and transparent resin. It can be directly or mixed with other similar plastics. If the product is directly added with ordinary plastic powder, it is easy to make the product black and discolored. The luminous plastic masterbatch can solve the blackening and uneven dispersion of the luminous powder in the plastic production process. In the injection molding, the luminous powder is mainly caused by the hardening of the phosphor and the friction caused by the friction of the screw. How to avoid this phenomenon?

    1. For the selection of luminous powder, try to use a luminescent powder with a finer particle size and a softer powder.

    2. The selection of the machine should be as good as possible with the old, short screw injection molding machine (generally recommended to be within 0.8 meters) to produce luminous products.

    3. Mix the mixture as much as possible to avoid mixing the machine.

    4. Minimize temperature and pressure during the injection molding process, and try to lower the temperature and pressure on the basis of the finished product.

    5. The addition ratio of the light-storing powder used for injection molding is generally 3%-10%, and the ratio can be adjusted according to the requirements of luminous brightness and cost accounting, and the addition ratio should not exceed 10%.

    The above method is very effective in alleviating the blackening phenomenon of the luminous powder in the injection molding process.