The distinction of polyester/polyether TPU

TPU materials are widely used in various industries due to their excellent physical properties, but the difference in their composition leads to differences in performance between products. In daily contact, it is believed that many people still have a certain degree of difficulty in distinguishing polyester/polyether TPU. Today, let's take an inventory of how to distinguish different types of TPUs and their specific application areas. (TPU crosslinking agent, TPU leather, PVC adhesion promoter)

TPU is a polyurethane thermoplastic elastomer, which is a heterogeneous block copolymer composed of diisocyanate, polyol, and chain extender. The polyol part can use a variety of polyols, which can be roughly divided according to the use of polyols. There are two series of polyester and polyether.

1. The characteristics of polyether TPU and polyester TPU

1. Polyether TPU: The main chain of the molecule contains ether bonds, the cohesive energy of ether bonds is low, low temperature flexibility is good, hydrolysis resistance is excellent, excellent mold resistance, and the material feels more comfortable.

2. Polyester TPU: contains ester groups in the main molecular chain, strong covalent bond performance, excellent physical properties, wear resistance, tear resistance, chemical corrosion resistance, and high temperature resistance.

Due to the different rigidity of the raw materials, the TPU film polyester or polyether material can be distinguished by observing the tearing of the product.

Second, polyester/polyether TPU manual distinction judgment method

1. The tear strength is more difficult to tear and the notch has obvious zigzag pattern is polyester;

2. The tear strength is relatively easy to tear and the gap is very flat for polyether. (TPU crosslinking agent, TPU leather, PVC adhesion promoter)

Three, the choice of different polyols affects the performance of TPU products

1. Polyester TPU: high tensile strength, abrasion resistance, tear strength, chemical resistance, and transparency.

2. Polyether TPU: impact resistance, material density, moisture evaporation, bacteria resistance.

4. Application fields of YPU products

TPU products: The same product can be used in different fields, and different products will be used in the same field.

1. Polyester TPU is a highly polar polymer material, with little affinity for non-polar mineral oil, and has excellent oil stain resistance, acid and alkali resistance, and is used in industry, military and other fields. widely used.

2. Polyether TPU products have excellent waterproof performance. They are not only favored by customers in the field of water recreation, but also can be fully used in civilian, industrial and even military fields.

Five, the choice of TPU terminal products

From the perspective of product physical properties, customers can make pre-selection judgments of polyester and polyether based on the use environment of the end product.

1. Polyether TPU: Zorb ball, isolation cabin, drinking water bag...

2. Polyester TPU: airbags, hyperbaric oxygen chambers, inflatable beds... (TPU crosslinking agent, TPU leather, PVC adhesion promoter)