If you want to improve the whiteness of extruded board, can you use whitening agent?

Extruded board is a kind of material which is widely used in the field of construction. It has the advantages of good quality, low price, high quality, heat insulation, moisture-proof and so on. It is deeply loved by the majority of consumers. Due to the increasing demand of Extruded Boards year by year, more and more manufacturers are producing extruded boards. The appearance of our common extruded boards is mostly white. In order to improve the whiteness of products, an appropriate amount of whitening agent will be added in the production process. How can it improve the whiteness of Extruded Boards?

 

When we choose a suitable fluorescent whitening agent, we must first understand the performance characteristics of the product itself. The extruded board is mainly made of polystyrene, which has excellent and lasting heat insulation performance. The closed cell structure is close, and the molecular structure of polystyrene itself does not absorb water, and there is no gap between the front and back sides of the board, so the extruded board also has excellent moisture-proof and impermeability.

 

Fluorescent whitening agent used in extruded board can improve the whiteness and service life of products. The reason why the whiteness of the extruded board made by the manufacturer is not enough, or even yellowing, is mainly because the extruded board reflects more yellow light, and the fluorescent whitening agent absorbs ultraviolet light to reflect blue light, so the combination of the two forms white light, so we can see the extruded board made by adding whitening agent, and the white one will be more clean and bright.

 

Fluorescent whitening agent OB-1 is more suitable for the use of extruded board. It is non-toxic and tasteless, whitening effect is remarkable, migration resistance, oxidation resistance and other performance characteristics. In the process of use, the addition amount is only 0.02% - 0.05%. However, Shanghai enmai recommends that you add a small amount first. Too large or too small amount will affect the whitening effect, Therefore, the addition amount must be well controlled in order to achieve the final satisfactory effect.