The fundamental difference between polyether-based TPU and polyester-based TPU lies in their molecular chain structures: the former is linked by ether bonds, while the latter is linked by ester bonds. This seemingly minor chemical distinction directly determines how the materials perform in humid environments:
The ether bond structure imparts excellent hydrolysis resistance to polyether-based TPU, making it particularly suitable for long-term exposure to water or high-humidity conditions.
Singbon tpu has there specific advantage in the general applications,such as grade X80 T390 and so on.
X80 is most applicated in Footwear industry to make shoes outsole ,shoe accessories,injection parts with a short cycling time.
Conversely, the ester bond structure gives polyester-based TPU superior mechanical strength, but renders it prone to degradation in humid environments.
In applications involving underwater equipment, outdoor construction materials, or medical devices, the hydrolysis resistance of polyether-based TPU becomes a decisive factor. Specific grades-such as Covestro's 6080A-achieve enhanced, long-lasting performance stability precisely by optimizing ether bond density.
However, hydrolysis resistance is not the only consideration; other performance requirements must be balanced based on specific technical parameters.
