Advantages and disadvantages of EVA laminated glass plastic films.
Advantage. EVA laminated glass plastic film (butadiene-vinyl acetate polymer) is a thermosetting plastic and adhesive plastic film, which is widely used in the encapsulation form of solar cell modules. The advantages are as follows:
High light transmittance: EVA adhesive tape can make the sun larger, make photovoltaic cells, and improve the power generation capacity of solar modules.
Good adhesion: good adhesion to glass and side panels, ensuring the structural strength of the solar module.
Durability: It can resist environmental elements such as continuous high temperature, moisture, ultraviolet light, etc., to ensure long-term service life.
Easy to store: When stored at room temperature, the adhesion of EVA is not jeopardized by the hygroscopic film and temperature.
Low melting point and circulation: suitable for various glass laminated glass processing technologies such as ice stained glass, tempered laminated glass, bent glass, etc.
Flaw. Although EVA adhesive tape has many advantages, it also has some drawbacks:
Poor PID resistance: The vinyl acetate functional group in EVA material is absorbent and prone to hydrolysis reaction, resulting in glacial acetic acid, which may lead to corrosion of welding strips on the surface of photovoltaic cells, which may lead to output power loss.
Weak aging resistance: EVA adhesive tape may appear yellowing or other aging phenomena when exposed to outdoor environments for a long time.
Advantages and disadvantages of POE glass film.
Advantage. POE glass film (polyolefin elastomer) is a new type of photovoltaic power generation encapsulation material, which has the following advantages:
Conditioner PID Characteristics: POE adhesive tapes are excellent at the encapsulation level of high-efficiency cell modules against potential difference-induced loss (PID), especially in double-glass modules.
Excellent aging resistance: POE adhesive tape has a high water vapor isolation rate and good aging resistance, and is suitable for harsh environments.
Better adhesion: Like EVA film, POE adhesive tape can also bond well to the glass side panels to ensure the reliability of the components.
Flaw. Although POE adhesive tape is better than EVA adhesive tape in some functions, it also has some limitations:
Relatively high cost: Compared with EVA adhesive tape, the cost of POE adhesive tape is generally higher, which will seriously affect its competitiveness in the market.
Relative supply shortage: The supply of POE resin may be relatively scarce, which may limit the widespread use of POE films.
Summary. EVA and POE glass films have their pros and cons, and the article represents personal opinions and opinions.