What is the reason for the rust of PU steel wire hose?
The structure of the PU steel pipe product is that the steel wire is embedded in the inner wall of the hose. The pipe of good quality should be inlaid tightly without gaps, and there will be no room for air and water to enter. If the steel wire of the PU steel pipe is not embedded enough It is strict and has a great impact on the quality of the product, because such a situation seriously affects the mission life of the PU steel wire pipe. , will lead to the appearance of rust of copper-plated steel wire. If such a situation occurs, if the hose needs to have a certain telescopic motion during use, it will cause the friction between the hose and the pipe wall to increase, which will easily lead to the appearance of the pipe wall. Unnecessary damage occurs, which greatly affects the service life of the PU steel pipe.
Analysis and prevention methods of rust and yellowing of PU steel pipe
Analysis and prevention of yellowing of PU steel wire pipe body
1. The yellowing of the PU steel wire hose caused by the antioxidant effect. Now many PU steel wire hoses mainly choose TDI (toluene diisocyanate) or MDI (diphenylmethane diisocyanate) as raw materials. Such substances undergo complex chemical reactions under the action of light, heat, oxygen, and especially ultraviolet rays to generate chromophores. As a result, the resulting PU steel wire hose is easy to yellow and cannot maintain a high transparent color for a long time.
2. The effect of ultraviolet rays will also cause the PU steel wire hose to turn yellow. When the finished PU steel wire hose is produced and needs to be placed for a period of time. To be placed in a dry area with low light. Especially avoid direct sunlight.
Solutions to prevent yellowing of PU steel wire hoses:
Minimize the oxygen content in the area where PU steel wire hoses are produced and stored (can be filled with inert gas). It can also be used to add antioxidants, ultraviolet absorbers and other methods to effectively delay the yellowing of the PU steel wire hose.
