ch
English
The stability of titanium dioxide product quality is very important for any enterprise. Because the quality stability of titanium dioxide is directly related to the quality stability of its downstream users' products. If some indicators of titanium dioxide are unstable, even if some indicators of titanium dioxide are greatly improved, this is also a product that downstream users do not want, because if downstream users want their product quality to be stable, they must adjust the formula according to the changes of titanium dioxide quality indicators, otherwise the product quality will have problems. Therefore, this issue is of great concern to users.
It is very important to select titanium dioxide products suitable for this application field. At present, there are thousands of titanium dioxide models in the market, which are mainly divided into two categories: general-purpose and special-purpose. Universal products, as the name suggests, are applicable in many fields, but in a specific application field, there must be a certain gap compared to specialized products in a certain field. Titanium dioxide used for plastic masterbatch must be changed from hydrophilic to hydrophobic. Water-based, oil-based coatings and plastics cannot be shared due to their different properties. If specialized products that are well used in the plastic industry are used in water-based applications, significant quality issues will arise. Therefore, titanium dioxide manufacturers should know which fields their products are suitable for and which are not suitable for. They should avoid recommending your products to the fields that are not suitable for their products, which will effectively avoid many quality objections. Downstream users of titanium dioxide should also have a certain understanding of the products recommended by titanium dioxide manufacturers. They can learn whether there are enterprises in the same industry and how well they use them; And before the new product enters the factory, it is necessary to conduct a small test to determine whether the product is suitable, in order to reduce unnecessary economic losses caused by improper product selection.
The volatile matter of titanium dioxide is actually the water content. Because of the high energy and hydroxyl groups on its surface, its surface always needs to absorb a certain amount of water to reduce the amount of water that can be absorbed on its surface, which is related to the organic treatment of titanium dioxide surface and the humidity and temperature of its storage environment. The volatile content of titanium dioxide cannot determine the quality of the product, but depends on its application system. Generally, the level of volatile matter in water-based systems does not have a significant impact on their application. However, for oily systems and polyolefin systems, it is required that the lower the volatile matter, the better, as high volatile matter will affect its dispersion performance and product quality in the system.
Dispersibility, also known as grinding dispersibility or grinding wettability, is called water dispersibility when used in water as a medium, and oil dispersibility when used in paint systems such as solvents. Dispersion index is an important application index of titanium dioxide. The dispersity of titanium dioxide not only affects the indexes such as extinction power, hiding power and oil absorption of the pigment, but also affects the gloss and weather resistance of the coating film or profile forming. When grinding and dispersing in paint production plants, the quality of dispersion directly affects the length of grinding and dispersion time, which is one of the important economic indicators during paint production. Moreover, if the grinding time is too long, it can increase equipment pollution and cause product whiteness to deteriorate. In the production of plastic color masterbatches or profiles, the dispersion directly affects the cycle of replacing the machine head screen and the performance of the product.
