What kind of whitening agent can PVC soft glue use?

Soft rubber is a kind of material made of plastic injection molding, without vulcanization treatment, it feels soft under normal temperature, so it is called soft rubber. PVC soft glue has good high and low temperature resistance and weather resistance, and it also has good electrical insulation performance, and the coefficient of all insulation materials are among the best. Because it has so many advantages, it has a wide range of uses. In recent years, with the increasingly stringent environmental requirements, many recycled materials are recycled, but its whiteness and transparency are certainly not as good as new materials. How to solve this problem? Only need to add fluorescent brightener, but there are so many types of brightener, which is suitable for PVC soft glue.

 

In the whitening process of PVC soft rubber products, many people think that adding fluorescent whitening agent OB-1 can play a whitening role. Practice has proved that this is not feasible. The compatibility between fluorescent whitening agent OB-1 and PVC soft rubber is very poor, and it is easy to migrate and precipitate, which seriously affects the stability of product appearance. Therefore, Shanghai enmai suggests that when you choose fluorescent whitening agent, you'd better choose fluorescent whitening agent fp-127 or ob, especially for transparent products. The addition amount is very small, between 0.001-0.01%. Excessive addition is easy to cause precipitation and yellowing, so you must pay attention to it. In addition, the quality of products should also choose good, otherwise it will affect the transparency.