the importance of eva solar photovoltaic film in photovoltaic modules

if you want to understand eva photovoltaic encapsulation film, you have to mention its wide application in solar cell modules. solar cell modules are generally required to be able to be used normally for 20 to 30 years. since they generally work outdoors, the requirements for cell packaging materials are relatively strict. eva has the characteristics of transparency, softness, hot-melt adhesiveness, low melting temperature, and good melt fluidity.

photovoltaic adhesive film is a material that plays a key role in the packaging of photovoltaic modules and is one of the materials of photovoltaic modules. the adhesive film bonds photovoltaic cells, photovoltaic glass and backsheets. its main function is to protect the cells and package them into photovoltaic modules that can output dc power. if the film has problems such as a decrease in light transmittance during use, the module is likely to be unable to generate electricity normally and be scrapped. therefore, photovoltaic modules have relatively high requirements for the adhesive film used in packaging, especially in terms of light transmittance, weather resistance, bonding strength, aging resistance and other properties.

transparent eva is used in the front and back packaging of single-sided components. currently, the technology is mature and the cost is low, and it dominates the market. compared with transparent eva film, white eva film has a higher reflectivity, which can increase the utilization rate of solar light by the module. it is mainly used on the back of single-sided power generation photovoltaic modules. it can increase the power of single-glass and double-glass modules respectively. 1-3w and 7-10w, poe film has a higher water vapor barrier rate than eva film, which can avoid pid phenomenon and effectively improve the anti-aging performance of double-sided modules.