What's The other Differences Between Polyether TPU And Polyester TPU ?
The difference on Hydrolysis Stability
Polyester TPU's hydrolysis resistance can be improved by protecting it with carbodiimide. Polyether ester TPU and polyether TPU exhibit the best hydrolysis resistance at high temperatures.
Polyesters are prone to hydrolytic cleavage when exposed to moisture, and the acids produced can catalyze further hydrolysis. The type of polyester impacts the elastomer's physical properties and hydrolysis resistance. Longer methylene chains in polyester diols improve hydrolysis resistance. Similarly, polyesters with fewer ester groups have better hydrolysis resistance. Using long-chain diacids in polyester synthesis results in better hydrolysis resistance than short-chain diacids.
Microbial Resistance Difference
Polyester-based soft TPU is susceptible to microbial attack when in contact with moist soil for prolonged periods. Polyether-based soft or hard TPU generally resists microbial attack.
And the Price is also different
Polyether TPU is more expensive than polyester TPU due to several factors:
1. Excellent hydrolysis resistance, low-temperature performance, and flex resistance.
2. Higher production costs for polyether polyols compared to polyester polyols.
3. More complex production processes for polyether polyols.
4. Stricter control over production conditions during polyether polyol synthesis.
5. Higher equipment requirements and the need for protective measures during polyether polyol production.
Our Beiqiao can supply both polyester TPU and polyether TPU.
Any needed to the TPU and want to know information,please contact us .