Pigment Black- Carbon Black, is simply carbon. It is by far the most popular black colorant for plastic applications. It is available in a range of particle sizes that determine its “jetness” or tinting strength and hue in white reduction (brownish to bluish greys). It shows excellent chemical, light, and weather resistance.
The functional groups resulting from the production process affect carbon black’s performance and properties. Special grades of carbon black are recommended specifically for plastics and food packaging applications.
Pigment Black – Iron oxide (Fe3O4), has excellent dispersibility and migration resistance. but it is limited by its thermal stability and low tinting strength. Under certain conditions, it accelerates the thermal decomposition of PVC.
Pigment Black 30, Mixed Metal Oxides (Cr/Fe/Mn/Ni oxides) are characterized by outstanding heat, weather, and chemical resistance.
Specialty products are available, such as the black pigment, Heliofast Black IR, for applications requiring high reflectance in infrared and polycyclic polymer-soluble dyes, such as Thermoplast Black M. Applications include use in polystyrene, PMMA, and unplasticized PVC.
Today Black masterbatch has become a popular material source in the final products of injection molding process. In fact, you can easily see a plastic lunch box at the supermarket or a fruit basket, etc. The shiny and vivid black color of these products are almost possible from carbon black. However, there are still products that used black masterbatch but do not gain a good visual effect or impression customers. What reasons cause this problem? let’s find out the 3 reasons below.
Recycled plastics are used in the past, after that collected, sorted, cleaned and re-processed into new materials for further use. We already know about popular thermoplastics such as PE, PP, ABS and so on. Most of them are not degradable as quick as biodegradable plastic. Therefore, recycling plastics to utilize them as a source of raw materials is essential in the process of environmental protection. So many manufacturers also intend to use recycled materials for their plastic products in the future. However, the compatibility of recycled plastic is also a problem that many people worry about. It is much worse than the new material. This has led to a corollary when customers use black masterbatch with it. After checking, the difference of performances on black when using the recycled plastics and the general result is quite large.
Currently, manufacturers have specialized in all kinds of black masterbatch suitable for each popular plastic on the market. For examples: PP black masterbatch, PE black masterbatch… However, the matching between the primary plastic used and characteristics of the black masterbatch they imported is another problem. In case, the based plastic of color masterbatch and modified materials is different. Therefore, it caused many obstacles such as compatibility, diffusibility and black color that will not reach their expectation.
Customers usually just look at the appearance of black masterbatch on website when replacing raw material suppliers. However, they ignore its primary plastic, compatibility and diffusivity. That is a reason making a huge mistake when they order a large of black masterbatch for their whole products from a new manufacturer. In US MASTERBATCH JSC, we are willing to support their customers during testing process and control the properties of black masterbatch which is just suitable for their products.