The difference between TPU polyester and polyether, and the relationship between polycaprolactone and TPU

The difference between TPU polyester and polyether, and the relationship between polycaprolactone TPU

First, the difference between TPU polyester and polyether

Thermoplastic polyurethane (TPU) is a kind of high performance elastomer material, which is widely used in various fields. According to the different structure of its soft segment, TPU can be divided into polyester type and polyether type. There are significant differences in performance and application between the two types.

Polyester TPU has high strength and wear resistance, tensile properties, bending properties and solvent resistance are very good. In addition, it has good high temperature resistance and is suitable for applications in high temperature environments. However, the hydrolysis resistance of polyester TPU is relatively poor, and it is easy to be invaded by water molecules and fracture.

In contrast, polyether TPU is known for its high strength, hydrolysis resistance and high resilience. Its low temperature performance is also very good, suitable for use in cold environments. However, the peel strength and fracture strength of polyether TPU are relatively weak, and the tensile, wear and tear resistance of polyether TPU are also inferior to that of polyester TPU.

Second, the polycaprolactone TPU

Polycaprolactone (PCL) is a special polymer material, while TPU is short for thermoplastic polyurethane. Although they are both polymer materials, polycaprolactone itself is not a TPU. However, in the production process of TPU, polycaprolactone can be used as an important soft segment component to react with isocyanate to produce TPU elastomers with excellent properties.

Third, the relationship between polycaprolactone and TPU masterbatch

Masterbatch plays a crucial role in the production of TPU. Masterbatch is a high-concentration prepolymer, usually composed of a variety of components such as polymer, plasticizer, stabilizer, etc. In the production process of TPU, masterbatch can react with chain extender, crosslinking agent, etc., to produce TPU products with specific properties.

As a high performance polymer material, polycaprolactone is often used as an important component of TPU masterbatch. By prepolymerization of polycaprolactone with other components, TPU products with excellent mechanical properties, hydrolysis resistance and low temperature resistance can be prepared. These products have a wide range of application prospects in the fields of invisible clothing, medical equipment, sports shoes and so on.

Fourth, the characteristics and applications of polycaprolactone TPU

Polycaprolactone TPU takes into account the advantages of polyester and polyether TPU, and has better comprehensive properties. It not only has high mechanical strength and wear resistance, but also shows good hydrolysis resistance and low temperature resistance. This makes polycaprolactone TPU have a long service life and stability in complex and changeable environments.

In the field of invisible clothing, polycaprolactone TPU has become the preferred material due to its excellent comprehensive properties. It can resist the erosion of external factors such as acid rain, dust, bird droppings, and ensure the performance and life of the car clothing. In addition, in the fields of medical devices, sports equipment, etc., polycaprolactone TPU has also received widespread attention for its safety and reliability.

In short, there are significant differences between TPU polyester and polyether in performance and application, while polycaprolactone, as one of the important components of TPU, gives TPU products excellent comprehensive properties. By in-depth understanding of the relationships and characteristics between these materials, we can better select and apply suitable TPU products to meet the needs of different fields.