Determine the four factors of CaCO3 Filler Masterbatch quality
Dispersion is high
CaCO3 Filler Masterbatch is produced using carbon black. Raw carbon black is very difficult to handle and dirty mixture, it is covered with dust, light weight, was fluffy. Unless a large-scale treatment, or it will dirty machines and workers, so that the working environment becomes dirty. Because of this, casting workers are generally selected in a resin carrier, that is, black CaCO3 Filler Masterbatch to complete the pre-dispersion of carbon black. The resin carrier is clean, free flowing and easy to use. In addition, carbon black in addition to dirty, there is a feature that is difficult to disperse. If the injection mold directly to the raw carbon black melting, coloring effect will be very poor. No scattered carbon black stripes and spotted areas by the less colored place will be obvious next to the show. The standard injection molding machine can not effectively disperse raw carbon black.
The difficult dispersion of carbon black is also plagued by CaCO3 Filler Masterbatch producers. The use of single or double screw extruders to produce high load black CaCO3 Filler Masterbatch dispersion is very poor. When the end user mixes or molds these CaCO3 fillers, its performance is slightly better than carbon black, but the effect is equally unsatisfactory. In order to achieve a stable high degree of dispersion, it is necessary to mix a carbon black, such as a mixture of FCM or BANBURY, using a high standard shear machine. With sufficient strength, these mixers can mix the carbon black and the base resin completely together. The type of carbon black used also affects the dispersion. The smaller the carbon black particles, the harder the dispersion is.
The application of thin wax is the most emphasis on the requirements of the dispersion. The final product of the poor dispersion of the masterbatch can be easily seen by the naked eye from the corners. In addition to the lack of beauty, the dispersion of carbon black in the film significantly reduces the performance of black film weathering.
Coverage is stronger
The second factor that determines the mass of the CaCO3 Filler Masterbatch is the cover force, which is particularly important for CaCO3 filler masterbats for waste or recycled polymers. In these cases, the black effect is to cover the Other colors. Large particles of carbon black coloring ability is poor, not easy to cover all the other in the lower color, the results of the final product only get away from the color. In the process of melting, the ability to correctly select the carbon black with high coloring ability to cover the existing color is the so-called covering force.
Liquidity is better
The third factor in determining the mass of CaCO3 Filler Masterbatch is rheology and mobility. If a CaCO3 Filler Masterbatch itself has good dispersion, but it can not flow into the material to be molded, the production effect is not ideal. In general, the backing resin used to produce the CaCO3 Filler Masterbatch has a high rheological property. In order to save costs, some CaCO3 Filler Masterbatch producers use reusable materials, scrap or recycled materials as resin carriers. The flow performance of the CaCO3 Filler Masterbatch thus produced will be significantly reduced, and if the rheology is not good, the mold union will have trouble in the cycle time and appearance treatment. It is worth noting that if the dispersion and rheology are not high, some end users will be compensated by increasing the dilution ratio, but this will only increase the cost of CaCO3 Filler Masterbatch. CaCO3 filler with minimum dilution ratio can produce uniform, good dispersion of black.
Compatibility is big
The compatibility factor determines the fourth factor of CaCO3 Filler Masterbatch quality. If the CaCO3 Filler Masterbatch is produced using chips or recycled materials, it may contain contaminants or other non-meltable polymers