TPU Polyurethane Sheet PU Surround Panel

Thermoplastic polyurethane elastomer rubber. It is mainly divided into polyester type and polyether type, with a wide hardness range (60HA-85HD), wear resistance, oil resistance, transparency, good elasticity, and is widely used in daily necessities, sports goods, toys, decorative materials, and other fields. Halogen-free flame retardant TPU can also replace soft PVC to meet the increasing environmental requirements in various fields.

Elastomer refers to a polymer material with a glass transition temperature below room temperature, an elongation at break >50%, and good recovery after the removal of external force.

Polyurethane elastomer is a special category among elastomers. It has a wide range of hardness and performance, making it a polymer material between rubber and plastic. It can be thermally plasticized, with little or no chemical cross-linking in its structure, and its molecules are basically linear, yet there is some physical cross-linking. This type of polyurethane is called TPU.

Introduction to the Properties of Polyurethane and Polyurethane Rubber

Polyurethane is polymerized from polyester (or polyether) and diisocyanate compounds. It has excellent wear resistance, good elasticity, high hardness, oil resistance, and solvent resistance. Whether polyurethane should be classified as plastic or rubber depends on the actual situation. In regions like Taiwan and Hong Kong, plastic is generally referred to as plastic, so strictly distinguishing between plastic and rubber is not particularly meaningful. The theoretical distinction between plastic and rubber is usually based on whether the material's glass transition temperature (Tg) is above or below room temperature. Typically, polymer materials with a Tg below room temperature are called plastics (e.g., polyethylene with a Tg of -78°C), while those with a Tg above room temperature are called rubber. Polyurethane is a very special polymer composed of hard and soft segments. The hard segments have a low Tg and exhibit plastic characteristics, while the soft segments have a Tg well above room temperature and exhibit rubber characteristics. During the synthesis of polyurethane, the ratio of hard to soft segments can be adjusted by controlling the polymerization reaction, allowing polyurethane to behave as either plastic or rubber. Polyurethane rubber (U) is the product of the reaction between oligomer polyols (polyether diol, polyester diol, or polyolefin diol, as well as phosphorus-, chlorine-, or fluorine-containing polyether diols), polyisocyanates, and chain extenders in the presence of a catalyst. Depending on the raw materials used, polyurethane rubber can be divided into two main categories: polyester-type polyurethane rubber (AU) and polyether-type polyurethane rubber (EU). The structural characteristics of polyurethane rubber molecules not only give it valuable comprehensive physical and mechanical properties but also allow for the adjustment of its elasticity, cold resistance, modulus, hardness, and mechanical strength by changing the components and relative molecular weight of the raw materials and the ester ratio.

Product Description

Polyurethane sheets have the following characteristics:

1) Low thermal conductivity: Polyurethane sheets have low thermal conductivity and excellent insulation properties, making them currently qualified insulation materials.

2) Aesthetic appearance and easy installation

3) Good fire resistance

4) Odorless

5) Wide range of operating temperatures

6) Waterproof and moisture-proof

7) Plasticity and good processability for reworking.

Polyurethane Sheet Polyurethane Sheet Production Customization of Various Sizes Polyurethane Sheet Coil PU Buffer Liner

Polyurethane sheets have an attractive appearance and an overall good effect. They integrate load-bearing, insulation, fire resistance, and waterproofing into one, eliminating the need for secondary decoration. They are quick and easy to install, have a short construction period, and offer good comprehensive benefits with excellent cost-performance advantages. They are a highly efficient and energy-saving building envelope material with great potential and are a new type of energy-saving panel promoted and advocated by the Ministry of Construction.

Polyurethane Products

Polyurethane products are a series of products made from polyurethane as the basic raw material, primarily used in large heavy industrial plants such as mines, coal washing plants, power plants, and steel mills.