Oil and chemical resistance
TPU is a kind of strong polar polymer material with low affinity with non-polar mineral oil. It is almost in fuel oil (such as kerosene, gasoline) and mechanical oil (such as hydraulic oil, engine oil, lubricating oil, etc.). It is not eroded; among them, the polyester series products in TPU products have better oil resistance; the TPU film and sheet have little change in volume of grease, and the tensile strength is even higher than the original initial value; If a small amount of water is contained in the mineral oil, it will have different degrees of negative effects on the physical properties of the film.
Low temperature performance
TPU has very good low temperature resistance, usually can reach -50 °C, can replace the general field of PVC can not be applied due to low temperature embrittlement, especially suitable for cold-related products.
TPU is very easy to weld with high frequency or hot pressing, so it is widely used in inflatable products. The gas coefficient refers to the rate at which a gas passes through a predetermined area of a sample at a certain temperature and pressure. The transmittance of the same material to different gases sometimes varies greatly. In general, polyester series products are more airtight than polyether series.
TPU has excellent biocompatibility, non-toxicity, no allergic reaction, no local irritation, and no pyrogenicity. Therefore, it is widely used in medical, health and other related products as well as sports and protective equipment.
TPU has been widely used in: shoe materials, ready-to-wear, inflatable toys, sports equipment for water and underwater, medical equipment, fitness equipment, car seat materials, umbrellas, luggage, leather bags, etc.