According to the different production methods of calcium carbonate, calcium carbonate can be divided into Heavy Calcium Carbonate, light calcium carbonate, colloidal calcium carbonate and crystalline calcium carbonate. White solid, tasteless and odorless. There are two forms of amorphous and crystalline. The crystal type can be divided into orthorhombic crystal system and hexagonal crystal system, which are columnar or diamond-shaped.
Calcium carbonate is widely used in filling polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), acrylonitrile butadiene-styrene copolymer (ABS) and other resins. The addition of calcium carbonate has a certain effect on improving certain properties of plastic products and expanding their application range. In plastic processing, they can reduce resin shrinkage, improve rheology, and control viscosity. It can also play the following roles: Calcium Carbonate,Calcium Carbonate, Light Calcium Carbonate Henan Shunbang Chemical Industry CO.,Ltd , https://www.suspensionpvc.com
(1) Improve the dimensional stability of plastic products;
(2) Improve the hardness and rigidity of plastic products;
(3) Improve plastic processing performance;
(4) Improve the heat resistance of plastic products;
(5) Improve the astigmatism of plastics;
(6) It can make the product have some special properties;
(7) Reduce the cost of plastic products.
On the evening of June 10, Zhoushan COSCO Shipyard completed the main hull molding for the second 152,000 tons shuttle tanker built by Norwegian Counason. The project node was five days ahead of schedule and was shortened by 58 days compared to the first ship owner's hull.
     It is reported that the project is 276.3 meters long, 46 meters wide and 17.5 meters deep. The designed load is 152,000 tons and the designed speed is 14.6 knots. It is a single-axis single-propeller propulsion infinite area driven by diesel engines. It can load flash points below 60. °C crude oil or refined oil, into the DNV-GL classification society.
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     Since the project was laid down on March 12 this year, the project team has carried forward the "four special" tradition and worked together to overcome the effects of rainy weather and heavy production resources, and continuously maintained and completed the specified various node indicators in advance. With the formation of the main hull of the 152,000-ton shuttle tanker, the project team will move toward the goal of the docking node after fifteen days.