PVC drainage pipes, which are familiar to everyone, are mainly used for building drainage and domestic sewage discharge. Most of the PVC drainage pipes we see in daily life are white, which not only have a good appearance but also have strong practicality, which is conducive to the long-term use of buildings. However, some manufacturers may encounter situations where the whiteness of the produced pipes is not enough, resulting in yellowing. Nowadays, the competition in all walks of life is very fierce, and people pay more and more attention to the appearance and quality of products. So how to improve the appearance of products? Here we suggest you add a small amount of Optical brightener in the production process.
Optical brightener can improve the whiteness of PVC drainage pipe mainly due to its optical whitening principle, and there is another kind of titanium dioxide that can play a physical whitening role. The effect of using both together is better. When titanium dioxide is used alone, its whiteness will not increase after reaching a certain value. At this time, a small amount of Optical brightener needs to be added to solve the problem.
As a kind of auxiliary agent for plastics, Optical brightener mainly improves the whiteness, brightness and brightness of plastic products. PVC drainage pipe is made by extrusion process, which has very good impact resistance and pressure resistance. It is recommended to use Optical brightener OB-1 as the whitening agent usually used on it. It can be dissolved in most organic solvents, and has very good heat resistance, light resistance, and chlorine bleaching resistance. It can meet the temperature requirements of PVC drainage pipes during production, with a dosage of 100 kilograms of raw materials plus 10g to 50g. It not only has a good whitening effect on PVC drainage pipes, but also has a very good effect in other PVC products.
Post time: Jun-16-2023