What are the functions of high temperature adhesive tape in solar photovoltaic field?

The core role of high-temperature adhesive tape in solar photovoltaic field focuses on key links such as component manufacturing, electrical protection, sealing and insulation, installation and operation, adaptive lamination, high-temperature testing, etc., to ensure the performance and life of components. The following is detailed according to the application scenario:

First, the component manufacturing process

Lamination process assistance

Exhaust and demoulding: high-temperature adhesive tape such as perforated Teflon is laid between the heating plate of the laminator and the photovoltaic stack, which can exhaust the cross-linking gas of EVA when laminating at 140-160℃, reduce bubble defects, prevent EVA from sticking to the equipment and shorten the cleaning time.

Temporary fixing and positioning: PET or PI high-temperature adhesive tape is used to fix the battery during battery string typesetting to prevent displacement. After lamination, it can be peeled off without leaving residual glue, avoiding damage to the battery coating and improving typesetting accuracy.

Bonding and fixing of parts

Fixation of junction box and bus bar: Bonding junction box base to back plate, resisting high temperature of 80-120℃ curing with glue, fixing the direction of bus bar, and ensuring stable connection.

Welding tape fixing: Fix the welding tape around the laminated assembly, between the glass and the back plate and junction box, to prevent displacement and wrinkle, and to ensure the appearance and performance of the assembly.

Second, the electrical insulation and protection

Insulation protection: used for insulation of junction boxes, bus bars and other parts, to prevent leakage and short circuit, to adapt to outdoor high temperature, high humidity and other complex environments, and to ensure the safe operation of photovoltaic systems.

Shielding protection: In the high-temperature process of 800-1000℃ such as diffusion and sintering, the edge and other parts of the battery are shielded to avoid high-temperature pollution or damage and ensure the performance of the battery.

Third, sealing and weather protection

Edge sealing: it is attached to the edge of the module to block the invasion of water vapor and dust. It is used to seal the frame and waterproof the back plate with butyl adhesive tape to prevent the battery from oxidation failure and prolong the outdoor service life of the module.

Weatherproof reinforcement: It has the characteristics of anti-UV and anti-aging, which can resist the harsh outdoor environment for a long time, prevent the components from degumming due to thermal expansion and contraction, and ensure the stable power generation efficiency.

Fourth, other auxiliary applications

Equipment protection: as a temporary covering layer of laminator and other equipment, it can reduce the shutdown and cleaning caused by EVA adhesion and improve production efficiency.

Test and repair: adapt to the high-temperature test link of components and protect components; Auxiliary fixation and shielding during repair, convenient operation and no damage to the component structure.