I believe that many customers who use PU steel wire duct hose know that the hose will turn yellow after a period of use. Of course, our company has also had customers specifically ask for hoses with yellow tube, because they think they are more like imported hoses. So, why does PU steel wire duct hose turn yellow? Next, I’ll give you a brief introduction.
- Ultraviolet exposure.
The source is mainly sunlight. So, those who use PU steel wire duct hose outdoor, will be recommended anti-UV PU duct hose. This kind of hose is effective in absorbing ultraviolet light and preventing the hose from turning yellow. In addition, you should store the hoses in a dark place to avoid direct sunlight when you are not using duct hose.
2 Material oxidation, hot material, oxygen molecular influence.
The application of materials will produce oxidation reaction over time. After oxidation, it is easy to form free radicals, resulting in yellowing of the hose. PU steel wire duct hose is very transparent when it is just produced, and it will oxidize and turn yellow after a period of storage. The better the material is, the more difficult it is to turn yellow.
Therefore, when the customer receives the goods and finds that some of the hoses are transparent and some are yellow, there is no need to worry. This is not a quality problem, but the result of material oxidation, which will not affect the use.