What are the plastic colorants? How to choose plastic toner?
In modern life, plastics are widely used. There are many kinds of plastics, such as PVC, PE, PP, PS, ABS, PA, PC, PET, PU, UP, etc. As the demand for plastics continues to expand, the demand is also showing a trend of high-end and precision, among which the requirements for color are more diverse. At present, there are two commonly used plastic colorants, one is toner coloring, the other is color masterbatch coloring, both of which have their own advantages. Today we will focus on how to choose the toner for plastics?
Using toner as plastic colorant can be selected from the following aspects:
1、 Color of plastic toner
Plastic pigments should have good color performance. When selecting colors, such as titanium yellow, titanium nickel yellow with green phase or titanium chrome brown with red phase. In particular, attention should be paid to the color light of the colorant during color mixing. In addition to its natural color, each colorant also has its own color light, that is, the pigment that is less important than the determined standard color is called the color light.
2、 Temperature resistance of plastic pigment
First of all, what is the temperature resistance requirement of the pigment toner used for plastics? For example, if the temperature resistance is 200 ℃ for 5 minutes, you can choose the pigment in this temperature resistance range. High temperature plastics such as PC and PA are prone to unstable color, oxidation and other problems, so mixed inorganic pigments with better high temperature resistance can be selected. Mixed inorganic pigments have excellent light resistance, weather resistance, chemical resistance and high temperature resistance. They are suitable for compounding with organic pigments to synthesize brighter pigments with high opacity. They are widely used in the production of engineering plastics and special plastics.
3、 Migration resistance and weather resistance of pigment for plastics
Many people tend to neglect the migration resistance and weather resistance of pigments when choosing pigments for plastics. Migration in plastic products is usually characterized by frost and smoke. Generally, organic pigments dissolved in oils and plasticizers are prone to migration, while inorganic pigments generally do not. In addition, plastic products need to be used for a certain period of time, so that they can be used. Especially for products used outdoors and in special environments, colorants are required to have good weather resistance. The environment-friendly mixed inorganic pigments for plastics produced by Jufa Pigments have advanced light resistance, weather resistance, high temperature resistance, acid and alkali resistance. Even when diluted with white pigments, they also have excellent fastness to light, heat, climate and chemicals. Therefore, it is particularly suitable for engineering plastic products with high requirements for light resistance, weather resistance, temperature resistance, etc. It can be used outdoors for decades without fading.
4、 Environmental protection performance of plastic toner
In order to meet the requirements of product safety, environmental protection and health, plastic products (especially children’s toys, chemical fiber textile materials, electronic and electrical products, food containers and food contact materials, packaging materials and automotive materials) must meet the regulatory requirements of countries and regions around the world, mainly the control of chemical substances (colorants) in plastic products. Therefore, the pigments produced by regular manufacturers should be selected and conform to relevant international safety standards such as European Union ROHS standards and EN71-3 standards, so that they can be used in areas with high requirements for environmental protection performance.
Using toner as plastic colorant has the advantages of good dispersion, low cost and batch operation. Combined with the above aspects, it is convenient for everyone to choose the plastic toner that meets the performance requirements and has the appropriate price.
