Views: 339 Author: Site Editor Publish Time: 2022-11-10 Origin: Site
In the previous article, we introduced many color masterbatch products, such as carbon black masterbatch, economical white masterbatch and monochromatic masterbatch, etc. But do you know how color masterbatch works? What factors will affect the molding of masterbatch? Let us find the answer from the text.
Factors affecting the production of masterbatches
These are translucent when not activated indoors or when there is no direct UV light. And become colored when activated by UV light or sunlight. For example, clear to purple, or clear to red. The best color is achieved by using the most transparent raw base polymer.
Letdown rates are typically between 3% and 6%, depending on the desired color intensity; or higher doses for thinner products (less than 1mm thick), such as squeeze straws.
The best color is achieved by using the most transparent raw base polymer. We produce masterbatches with activation temperatures (color change points) from -15C to +70C. The color change is not sudden, but happens over several degrees.
Thermochromic masterbatches are always darker when cooler and lighter when hotter.
The temperature of all parts should be kept below 220C at all times, including during heating through the barrel. At higher temperatures or if left at elevated temperatures, thermochromic materials can discolor, burn, or lose their discoloration properties.
High-intensity masterbatches emit a yellow-green glow when activated by exposure to UV light or sunlight. Increasing the plastic thickness will produce a stronger and longer lasting shine. Letdown addition rates are typically higher than 5%, depending on the desired color intensity; or higher doses for thinner products.
Changes in masterbatches of different colors
When the temperature is below the activation temperature of the masterbatch, this is colored, when the temperature is above this temperature, it is semi-white. We offer a range of colors such as white to blue, white to green, white to red. Two color changes: When the temperature is below the activation temperature of the masterbatch, the color becomes darker, and when the temperature is raised above this temperature, the color becomes lighter. We offer a range of colors, such as when heated: purple to pink, orange to yellow, green to yellow. Tricolor: Lightens when heated and darkens when cooled, such as yellow to orange to red. or white to pink to purple.
Application of masterbatch in injection molding process
Injection molding is one of the main methods of plastic molding. Plastic products processed by injection molding can not only form products with complex structures, but also have high precision, good quality and high productivity.
In order to obtain an excellent injection molded product, according to the purpose of use, the physical and mechanical properties of the plastic (strength, stiffness, toughness, hygroscopicity, and sensitivity to stress) and the plastic molding process (fluidity, shrinkage, and anisotropic shrinkage differences, Crystallization rate, molding temperature, pressure sensitivity) are considered. There are three stages to complete the injection molding: plasticization, injection molding and setting.