Why plastic products added whitening agent or not white?

White plastic products have always occupied the mainstream position in the colorful plastics. In order to achieve the white effect in the production process of white plastics, we usually add a small amount of fluorescent whitening agent to improve the appearance of products. However, some manufacturers will tell us that the same problem is that the products made by themselves with fluorescent whitening agents have not achieved an ideal whitening effect, while the effect of others is more obvious. What is the reason? Today, Shanghai enmai will solve this problem for you

 

1. The type of fluorescent brightener selected is not suitable

 

At present, there are many types of fluorescent whitening agents used in plastics. Different types of fluorescent whitening agents have different appearance, melting point, heat resistance, compatibility and weather resistance. If plastic manufacturers do not choose the right fluorescent whitening agent, it is difficult for the whitening agent to play its due effect.

 

Another important point is to ensure the quality of fluorescent whitening agent. After all, the content of fluorescent whitening agent in the market is chaotic, and it is not surprising that inferior products are replaced by good ones.

 

2. The amount of fluorescent brightener is not suitable

 

Any good product addition is not the more the better, if the fluorescent whitening agent exceeds the recommended dosage, not only can not play a whitening effect, on the contrary, there will be yellowing, or whitening agent precipitation.

 

However, if the amount is too small, it can not achieve a good whitening effect, so we need to test the amount in the initial stage to find an accurate amount.

 

For fluorescent whitening agent, if you have more questions, please feel free to contact Shanghai enmai Chemical Co., Ltd. We provide you with professional technical guidance, one-to-one technical service!