Common used materials for engine cooler hose
In modern industry and daily life, hoses are an important means of transportation with a wide range of applications. From industrial raw material transportation, liquid transmission to various uses in daily life, hoses play an indispensable role. Among the many hoses, PU hoses and TPU hoses are very similar. What is the difference between these two hoses?
Function and use
TPU hose, that is, thermoplastic polyurethane hose. It is a polymer material with good recovery after the external force is removed. It is usually used in occasions that require stable support and adaptability to various thermal expansion coefficients. This makes TPU hoses widely used in the automotive industry, electronics industry, medical industry, and aerospace fields. PU hose, that is, polyurethane hose, is a polymer compound. It has good wear resistance, tensile strength and oil resistance. Therefore, it can maintain a long service life in various harsh environments. It is often used as a low-temperature resistant air conditioning refrigerant pipe, air and oil pressure pipe, fluid pipe, water pipe and spring pipe.
Hardness and features
TPU hose has a wide hardness range. Therefore, products of different hardness can be obtained by adjusting the ratio of each reaction component. And as the hardness increases, the product still maintains good elasticity and wear resistance. In addition, TPU products have excellent load-bearing capacity, impact resistance and shock absorption performance. Its glass transition temperature is low, and it still maintains good elasticity, flexibility and other physical properties at minus 35 degrees. PU hose has excellent rubber properties and can adapt to the bonding of substrates with different thermal expansion coefficients, but the hardness range may be relatively limited.
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