Among the filling and modifying materials for plastics, calcium carbonate occupies an unshakable important position. Calcium carbonate can be divided into heavy calcium carbonate and light calcium carbonate. So, in plastic products, what is the difference between light calcium and heavy calcium in application? Let’s take a rough look at it together:
Difference in concept
First, the difference in definition. Sedimentation volume can distinguish heavy calcium carbonate and light calcium carbonate. Sedimentation volume above 2.5mL/g is light calcium carbonate, sedimentation volume between 1.2L/g to 1.9mL/g is heavy calcium carbonate. If distinguished from production process, heavy calcium carbonate is made by mechanically crushing and sorting the ore, while light calcium carbonate is made by calcining, digesting and recarbonating the ore.
Difference in application effect
Some manufacturers have reported that under the same conditions, products filled with heavy calcium of 400 mesh, has obvious advantages in weight, but in length, area or number, heavy calcium has no advantage over light calcium.
For example: for pipes, filling with same amount of calcium, the length with heavy calcium is a few thousandths shorter than that with light calcium. When accumulated, the difference becomes larger.
To use heavy calcium or light calcium cannot be generalized
From academic point of view, there are many differences between heavy calcium and light calcium, such as different crystal forms, different specific surface areas and different oil absorption values. Moreover, the particle size and distribution of 400 mesh heavy calcium and light calcium are very different. To use heavy calcium or light calcium in plastic products has no fixed standard, it should base on full consideration of their respective advantages, and combining technical and economic factors.
How can calcium carbonate be better applied in plastics industry?
Calcium carbonate has become one of the indispensable raw materials in plastics industry. It can promote the product performance and low the cost.
Enterprises in calcium carbonate industry should not only make good products, but also deepen the utilization of carbonate.
In addition, there are still many enterprises that have no specific knowledge about filling and modifying. If we understand how they work in product processing, it would be helpful to develop deep-processed products, thus calcium carbonate will have broader application prospects.
Calcium carbonate applied in plastic products mainly through filling and modification. In order to make calcium carbonate better used in plastic products, people need to further process it, including crushing, grading and modification. This has to mention powder processing machinery, such as: crushers, graders and modifiers. As a professional powder machinery manufacturer, Qingdao Epic Powder Machinery Co., Ltd can produce various kinds of powder processing equipment for different usage. The ball mill, air classifier and surface coating modifier from Qingdao Epic are suitable for processing of carbonate, these equipment can work individually or combined as a production line, with high efficiency and low energy consumption. These equipment have a high reputation among domestic and foreign customers. Qingdao Epic can provide high-quality products with high-quality after-sales service. If you have any questions or demands, please feel free to contact Qingdao Epic.
