The application of titanium dioxide in PVC profile was analyzed
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The application of titanium dioxide in PVC profile was analyzed


As an outdoor product, weatherability is one of the most important properties of PVC profiles. Its weather resistance mainly depends on titanium dioxide, so high weather resistance is the most basic requirement of titanium dioxide. Of course, titanium dioxide also plays the role of pigment in the profile, and it is necessary to provide a good appearance and color. The formula of rigid PVC profile is very complex, and it is difficult to process. It is required that titanium dioxide does not affect the processing performance of other components, and meets the requirements of high temperature processing for titanium dioxide heat resistance.

It can be said that weather resistance is the most basic requirement for titanium dioxide. Therefore, the hard PVC profiles use high weathering rutile titanium dioxide. The molding process of plastic processing mainly includes injection molding, extrusion, calendering, blowing film, hollow molding, etc., and the rigid PVC profile is extrusion molding. The raw and auxiliary materials must be heated and sheared during the processing of various molding processes, and the components are evenly mixed. Therefore, the common requirements are: titanium dioxide should meet the basic heat resistance requirements, should be easy to disperse, and do not affect the processing performance of other components, etc. the difference is mainly the different influence on the later application performance of the products.

Titanium dioxide plays an important role in the market development of rigid PVC profiles. 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 it can be used as outdoor products. If titanium dioxide can provide more efficient weatherability and discoloration resistance for profiles, and reduce the cost properly, then PVC profiles will have a more significant increase in the market share of doors and windows. At present, rigid PVC profile is one of the main users of high-end rutile titanium dioxide in the plastic industry. In the past 20 years, the industry has achieved nearly double-digit annual growth rate, which not only puts forward requirements for domestic high-end rutile titanium dioxide, but also provides a huge development space and opportunity.

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