TPU - Polymeric thermoplastic elastomer.
For the polymeric reaction of TPU and related monomers, TPU is a high molecular material which is synthesized by the reaction of diisocyanate molecules such as diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) with macromolecular polyols and low molecular polyols (chain extenders).
Its molecular structure is composed of rigid segments obtained by reaction of diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) with chain extender and flexible segments obtained by reaction of diisocyanate molecules such as diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) with macromolecular polyols.
Comparison of basic features
1) Resilience and abrasion resistance:
The resilience and wear resistance of TPU are better than that of TPE, which is mainly due to the different structure of molecular segments.
In addition, the microstructures and properties of the blended TPE are less balanced than those of the polymerized TPU.The multicomponent of TPE has an adverse effect on its resilience.
Especially for TPE with high hardness, a large proportion of polypropylene component makes TPE resilience decrease greatly, and the product is prone to deformation under the continuous action of external force.
2) Hardness range:
TPE has a wide hardness adjustment space: its hardness can generally be adjusted within 0-100A, and even can provide ultra-soft TPE less than 0A (expressed in Shore hardness C or Shore hardness OO).
The hardness range of TPU is 35~90A and 50~80D.
The most common hardness is 80~95A. TPU with 50~80D hardness has few practical applications.TPU with 35~75A hardness has a high cost of materials.
3) Material texture:
TPU has high wear resistance, strong hand friction and poor smoothness.
TPE makes the material feel soft, comfortable and smooth because of the soft structure of SEBS molecular chain.
Both materials have their own advantages and disadvantages. They can be selected as the charging line of new energy automobiles according to the actual use.
The above information is from the official website of Eleteck Electric Cable Co., Ltd. in Huizhou City, www.eleteck.com.cn. For more information on charging lines of new energy automobiles, please collect the web address.