Calcium carbonate filling masterbatch is the most common type of filling masterbatch on the market, but the quality of calcium carbonate filling masterbatch on the market is uneven. As the calcium carbonate masterbatch from the same manufacturer will have different qualities.
From the perspective of chemical properties, calcium carbonate is an inorganic material and rich in resources. From a microscopic perspective, it is hexagonal and tetragonal, mostly crystalline particles. Many calcium carbonates have relatively high whiteness and good fluidity. Obtaining calcium carbonate is also extremely simple, so it is widely used in filled modified plastics. The following editors will introduce to you which factors have influence on calcium carbonate filled master batches.
I. Calcium carbonate content This is the most important factor affecting professional filling masterbatch, but the calcium carbonate content has fixed technical indicators. Generally speaking, the filling masterbatch has relatively high content requirements. Its processing performance stability and carbonic acid Calcium and calcium content are directly proportional, so in order to avoid the frustration of the filling masterbatch and prevent the content of non-metallic impurities from being too high, we must grasp the content of calcium carbonate.
Second, the whiteness of calcium carbonate It is often found that the whiteness and coloration of filled master batches are not good. This is mainly because the whiteness of calcium carbonate has a direct impact on its growth. The degree requirements are extremely strict, and for decades, masterbatch manufacturers have extremely delicate whiteness requirements.
Third, the moisture of calcium carbonateWe first analyze the raw materials of calcium carbonate.The raw materials of high-quality modified masterbatch are mostly calcite and natural marble, so there is no moisture; but after a series of processing procedures, It is a powdery powder. In addition, it is often absorbed by moisture during storage and handling, and a small amount of volatiles are generated in it. once the volatiles are too high, it will have a large impact on the filling masterbatch.