What determines the quality of black masterbatch?
The 6 factors that determine the quality of black masterbatch.
Black masterbatch is produced using carbon black, and the factors affecting the quality of black masterbatch are mainly reflected in the following six aspects:
1. Dispersion Carbon black is a very difficult and dirty mixture that is dusty, lightweight, and fluffy. Unless large-scale treatment measures are used, it will foul machines and workers and make the working environment dirty.
2. Coverage This factor is especially important for masterbatches used in scrap or recycled polymers. In these cases, the role of black is to cover other colors in the scrap. Large-particle carbon blacks have poor coloring capabilities and do not easily cover all other underlying colors. As a result, the final product is only deviated from the color. In the melting process, the ability to properly select the carbon black with high coloring ability to cover the existing color is the so-called covering power.
3. Rheology If a masterbatch itself has good dispersibility, but it cannot flow into the material to be molded, the effect of production is not ideal. In general, the base resin used to produce the masterbatch has a higher rheology. In order to save costs, some masterbatch manufacturers use reusable materials, scrap or recycled materials as resin carriers.
4. Compatibility If the masterbatch is produced using swarf or recycled material, it may contain contaminants or other non-meltable polymers. This will cause some unforeseen and difficult constraints, wasting the time and raw materials of the final consumer. At this time, you can choose to produce.
5. Stability In today's international economy, international customers produce high-quality masterbatch for the base resin, and the masterbatch has good compatibility in the melting process. It is absolutely necessary to use high-quality masterbatches to use LLDPE, LDPE, HDPE, PP, PS, SAN, PA, and other materials. The quality of the masterbatch and the stability of the raw material are absolutely necessary, which is also the quality of the black masterbatch. The fifth factor. One of the main manifestations of stability is the steady carbon black ratio. If the percentage of carbon black is fluctuating, the amount of masterbatch that needs to be melted is not the same, and it is impossible to produce a product with the same hue.
6, color shade There are various types of carbon black on the market can be used for coloring masterbatch, but all kinds of colors and prices are also very different. Large particle carbon black has a lower degree of coloration and a different background color than small particle carbon black. Large-particle black masterbatches are suitable for production of bags such as garbage bags, but are not suitable for the production of aesthetically pleasing products such as TV signs or areas where UV protection is required such as agricultural films or external pipes.