What is the weather resistance of the special positioning tape for solar energy?

The weatherability of special positioning tape for solar energy usually has the following characteristics:

Strong ultraviolet resistance: solar module has been exposed to the outdoors for a long time, with strong ultraviolet radiation. High-quality special positioning tape for solar energy can resist ultraviolet rays for a long time. For example, the pressure-sensitive adhesive for photovoltaic positioning tape of Henkel Chemical Technology (Shanghai) Co., Ltd. is resistant to ultraviolet rays and yellowing for 25 years, and its yellowing index is less than 3 at an energy of 60kwh, and it is not brittle.

Wide temperature adaptability: stable performance can be maintained in a wide temperature range. On the one hand, in a high temperature environment, such as when the surface temperature of solar module rises in direct sunlight in summer, there will be no problems such as softening, flowing and viscosity reduction, for example, the short-term temperature resistance of some tapes can reach 180℃ or even higher, and the long-term temperature resistance can also reach about 130℃; On the other hand, in low-temperature environment, such as cold winter, the adhesive tape will not become brittle and crack, but still maintain good flexibility and viscosity, and generally can tolerate low temperature of about-40℃.

Excellent hygrothermal aging resistance: it can withstand the combined action of high humidity and temperature change. In the outdoor environment, solar module will experience different weather conditions, including wet rainy season and high temperature and humidity climate. Some special positioning tapes for solar energy have been strictly tested. For example, under the conditions of-40℃-85℃ and 85% humidity, after 200 cycles, the peeling force stuck on PA material is still greater than 12N/cm, and it does not blister or yellow, showing good resistance to damp-heat aging.

Good chemical corrosion resistance: During the production and use of solar module, the positioning tape may come into contact with some chemicals, such as EVA film, flux, etc. The special positioning tape for solar energy has certain chemical corrosion resistance, which can prevent problems such as performance degradation and aging acceleration caused by contact with chemicals, and ensure its stable sealing and fixing effect in complex chemical environment.

Good mechanical stress resistance: When used outdoors, solar module may be subjected to natural forces such as wind and snow, resulting in vibration and displacement. The positioning tape should have good mechanical stress resistance, be able to bear a certain degree of tension, compression and shear force, keep the fixed position of the battery and other components unchanged, and prevent the tape from falling off or being damaged due to the movement of components, so as to ensure the normal operation and service life of solar module.