Новости
Основа выбора технического углерода в пластиковых мастербатчах
2024-06-19
Plastic masterbatch is the key material used for coloring in plastic products, and carbon black, as an important black pigment, plays a crucial role in the production of plastic masterbatch. The choice of carbon black not only affects the coloring effect of the masterbatch, but also relates to the performance and quality of plastic products. This paper will deeply discuss the types, characteristics, selection basis of carbon black in the production of plastic masterbatches and its influence on plastic products.
The selection basis of carbon black in plastic masterbatch
In the production of plastic masterbatch, the selection of carbon black is mainly based on the following aspects:
1. Coloring requirements
The blackness requirement of plastic products is the primary basis for selecting carbon black. For plastic products that require extremely high blackness and glossiness, such as ABS for automobiles, high-grade PVC synthetic leather, etc., high-pigment carbon black should be selected. For plastic products with medium blackness requirements, such as PE garbage bags, wires, pipes, etc., medium-pigment carbon black can be selected.
2. Dispersibility
The dispersibility of carbon black has an important influence on the coloring effect and performance of plastic products. The finer the particle size of carbon black, the worse its dispersibility, but the higher the light absorption, the higher the blackness. Therefore, in plastic products that require high blackness and gloss, pigment carbon black with small particle size and low structure should be selected, and the dispersibility of carbon black should be improved through appropriate dispersion process.
3. UV protection
Carbon black also has a certain UV absorption effect, which can protect plastic products from UV damage and extend their service life. Therefore, in plastic products used outdoors, carbon black with better UV absorption performance should be selected. Generally speaking, carbon black with smaller particle size has better UV absorption effect.
1. Coloring effect
The type and amount of carbon black directly affect the coloring effect of plastic products. High-pigment carbon black can provide extremely high blackness and glossiness, making plastic products appear black and shiny.
2. Physical properties
The addition of carbon black can improve the physical properties of plastic products. For example, reinforcing carbon black can significantly improve the mechanical properties and wear resistance of plastic products; conductive carbon black can make plastic products have antistatic or conductive properties. However, excessive addition of carbon black may also lead to a decrease in the mechanical properties of plastic products, so the amount of carbon black should be reasonably controlled.
3. Aging performance
Carbon black also has a certain anti-aging effect. Since carbon black has a high light absorption, it can effectively prevent plastics from being oxidized and degraded by sunlight, thereby extending the service life of plastic products.
4. Processing performance
The addition of carbon black also has a certain effect on the processing performance of plastic products. The particle size and structure of carbon black will affect the melt flowability and formability of plastic products. Therefore, when selecting carbon black, its effect on the processing performance of plastic products should be considered to ensure the smooth production of plastic products.
Conclusion
As an important pigment in plastic masterbatch, the selection of carbon black has an important influence on the coloring effect and performance of plastic products. In the production of plastic masterbatch, the type and amount of carbon black should be reasonably selected according to the coloring requirements, dispersibility, UV protection and other performance requirements of plastic products.
With the continuous development of the plastics industry, the application of carbon black in the production of plastic masterbatch will become more and more extensive. In the future, the production technology of carbon black will continue to improve, and the development and application of new carbon black materials will further improve the performance and quality of plastic products.
