Reasons and solutions for the yellowing of PU steel wire hoses
Published:
2023-04-03 12:00
We often see differences in the transparency of many finished PU steel wire hoses. Some are as transparent as glass, there are also many hoses that turn yellow or white. So why does PU steel wire hose turn yellow?
1、The yellowing of PU steel wire hoses caused by antioxidant effects. Nowadays, many PU steel wire hoses mainly choose TDI (toluene diisocyanate) or MDI (diphenylmethane diisocyanate) as raw materials. This type of substance undergoes complex chemical reactions under the action of light, heat, oxygen, and especially ultraviolet radiation to form chromogenic groups. The resulting PU steel wire hose is prone to yellowing and cannot maintain a high transparency color for a long time.
2、Ultraviolet radiation can also cause yellowing of PU steel wire hoses. When the finished PU steel wire hose is produced and needs to be left for a period of time. It should be placed in a dry area with low light. Especially avoid direct sunlight.
Solution to yellowing of PU steel wire hose:
Reduce the oxygen content as much as possible in the area where PU steel wire hoses are produced and stored (inert gas can be filled). Adding antioxidants, ultraviolet absorbers, and other methods can also effectively delay the yellowing of PU steel wire hoses.
Of course, yellowing does not affect the performance of PU hoses, it only affects visual perception. Using high-quality raw materials from world-renowned chemical giants such as BASF and Bayer. Can effectively delay the yellowing of PU steel wire hoses.
Related news
Differences and uses of PU, PE, EVA, PVC and Nylon hoses
Differences and uses of PU, PE, EVA, PVC and Nylon hoses
Introduction to performance characteristics of PU steel wire hose
Introduction to performance characteristics of PU steel wire hose
The company provide one-stop services from material development, design selection, application guidance and after-sales service. The products are widely used in general industries such as machinery manufacturing, engineering machinery, wood processing, glass ceramics, as well as automobile industry, medical and health, aerospace, national defense science and technology, ventilation and heating, etc
TEL: 86-13131656937 86-18601039103
Wechat :13131656937 18601039103
Whatsapp:+8613131656937 +8618601039103
Skype:+8613131656937 +8618601039103
Copyright:NingJin Baisheng Plastic Products CO., LTD 京ICP备2022031261号-1 Powered by www.300.cn SEO Click to view the business license