How to choose whitening agent for PVC plastics

PVC plastics are divided into two categories

 

Plasticized or flexible PVC is also called soft PVC. This kind of plastic product is mainly made by adding compatible plasticizer into PVC to reduce the crystallinity. It can also play the role of lubricant. In this way, the PVC plastic produced will be transparent and flexible.

 

Unplasticized is rigid PVC, which is a kind of rigid plastic with low cost, high impact resistance, and resistance to water, weather, chemicals and corrosive environment.

 

However, the biggest limitation of PVC is that its stability is relatively poor, and the product performance will change with time, resulting in yellowing of the product appearance and affecting the overall appearance. In order to improve the product stability and appearance, fluorescent whitening agent for PVC plastic is an indispensable additive in the production process.

 

PVC plastic commonly used fluorescent whitening agent is which model?

 

There are many types of fluorescent brightener, and the brightener used in PVC products is not a single type. For example, soft PVC is usually transparent, such as transparent door curtain, transparent hose, etc. this kind of product needs to choose the brightener ob product with good light transmittance and weather resistance.

 

For rigid PVC plastic products, it is usually used as water supply and drainage pipes. Shanghai enmai fluorescent whitening agent is specially used in rigid PVC plastic, with small amount, high whiteness, excellent weather resistance and stability. With this whitening agent, the product will not turn yellow even if it is exposed to the sun for a long time.