During the welding process of photovoltaic cells, various factors such as welding temperature, welding strip specifications, flux, and welding process can affect the welding strength between the welding strip and the main grid line of the cell. In order to ensure the quality of the cell welding, it is necessary to perform peel strength testing on the welding.

As an important raw material, gold wire must possess several important characteristics, such as good mechanical and electrical properties, appropriate destructive power, selecting the correct size, and a clean, pollution-free surface. At present, the gold wire diameter in the LED packaging industry mostly chooses 1.0MIL or 1.2MIL, with a purity of 99.99%. The elongation rate is generally 2%~8%, and the fracture load is generally required to be greater than 10g for 1.0MIL wire and greater than 16g for 1.2MIL wire.

The thermal performance of polymer materials has always been an important parameter of material properties, determining the use of materials and can also be used for industrial quality control and product development. Generally speaking, the glass transition temperature is the upper limit temperature for the use of thermoplastic materials and the lower limit temperature for the use of rubber or elastomers.

The glass transition temperature of polymer has a direct impact on the film forming temperature of lotion. Generally, the higher the glass transition temperature of polymer is, the higher its low film forming temperature is.