Thermal resistance of TPU film

Conventional TPU is generally or heat-resistant to 80 ℃, which means that its long-term use ambient temperature does not exceed 80 ℃, otherwise its service life will decline. There are also heat-resistant TPUs, which are said to be able to withstand up to 130 ℃. In addition, there are also glass fiber modified TPUs, which are also very high in heat resistance temperature.
TPU film is a material containing - NH-COO-group in the molecule. Long-chain diols and isocyanates form soft segments, and short-chain diols and isocyanates form hard segments. Many properties of TPU depend on the type of long-chain diols. The hardness is adjusted according to the proportion of hard segments. The addition of light stabilizer can improve the photoaging properties of TPU elastic band
After all, it is plastic. The common temperature resistance is generally around 100 ℃. But if you need to work under high temperature for a long time, you need special materials. Reinforced polyurethane has special high temperature and oil resistance, and is often used in automobile oil cups.
Generally speaking, if we need to improve the heat resistance, it is necessary to measure the working size. The softening point of the test card can be determined according to the relevant national technical standards. The global softening point is used to systematically test the softening point of asphalt pavement. It is usually used in TPU hot melt adhesive.
The development of data measured by capillary rheometer seems to have four values. The principle of the test method is not only to test the state of TPU under different ambient temperatures under constant pressure, characterized by softening point and flow point. Thermodynamic properties of TPU.