Application of Titanium Dioxide in PVC Profiles
PVC profile is a polyvinyl chloride extruded plastic material with an irregular cross-section, including door and window profiles, plastic edging, plastic moldings, PVC pipes, U-shaped grooves, etc. It is used as an outdoor product, and weather resistance is one of the most important properties. Titanium dioxide is used as a UV shielding agent for PVC, providing weathering protection for PVC, preventing profile aging and improving service life. Titanium dioxide also acts as a pigment in profiled materials, providing good appearance hue and luster for profiled materials. In addition, titanium dioxide can also enhance the strength of the material. The good dispersibility and suitable particle size of titanium dioxide can effectively combine with PVC and improve the strength of the profile.
It can be said that the weather resistance is the most basic requirement of the profiled material for titanium dioxide. Therefore, rigid PVC profiles mainly use rutile titanium dioxide with high weather resistance. The various molding processes of plastic rigid PVC profiles must heat and shear the raw materials during processing, and the components are uniformly mixed. Therefore, the common requirements are: titanium dioxide should meet the basic heat resistance requirements and should be easy to disperse. , does not affect the processing properties of other components and so on.
Titanium dioxide plays a very important role in the development of the rigid PVC profile market. Rigid PVC doors and windows have outstanding comprehensive properties, but PVC itself is not weather resistant. It is titanium dioxide that gives PVC good weather resistance, so that it can be used as an outdoor product.
