The invention and application of photovoltaic modules is an important part of mankind's opening of the new energy era. EVA film is one of the most critical packaging materials in the production process of photovoltaic modules,it can protect the solar cells by placing upper and lower covers on the solar cells and sealing them in the middle.EVA Crosslinking Degree Test System produced by Millennial Solar can accurately detect the cross-linking degree of EVA film to ensure the quality of photovoltaic modules and help customers produce high-quality solar modules!

What is EVA film?

EVA is a thermosetting and sticky adhesive film used to be placed between laminated glass.A functional film processed by adding cross-linking agents, coupling agents, anti-UV agents and other ingredients to a resin based on ethylene vinyl acetate copolymer.Due to the advantages of EVA film in terms of adhesion, durability, and optical properties, it is increasingly used in current components and various optical products.

Characteristics of EVA film

EVA is solid at room temperature, has no viscosity, and has poor light transmittance. When EVA is heated to a certain temperature, EVA will melt and bond to the objects in contact with it. The EVA used for solar cell encapsulation is a specially designed thermosetting hot melt adhesive that produces a cross-linking reaction when heated and melted. When the temperature is low, the cross-linking reaction occurs very slowly and the time required to complete curing is longer. On the contrary, the time required is relatively short. Therefore, it is necessary to choose an appropriate lamination temperature so that EVA can obtain fluidity in the melt and a curing reaction occurs at the same time. As the reaction proceeds, the degree of cross-linking increases, and EVA loses its fluidity and plays the role of encapsulation.

The EVA film will bond the battery, glass and backplane into a whole under a certain temperature and pressure, providing strong mechanical protection and effectively protecting the cell from erosion by the external environment. Therefore, the cross-linking degree of EVA film is particularly important. In order to determine whether the EVA film is firmly adhered to the solar cell, so as to ensure that the solar cell can be used normally in the wind and sun all year round,Millennial EVA Crosslinking Degree Test System can precisely test various properties of EVA film!

Millennial EVA Crosslinking Degree Test System

E-mail: market@millennialsolar.cn

Millennial EVA Crosslinking Degree Test System includes standard configurations such as fume hood, electronic balance, drying box, heating mantle, flask, glass condenser, etc. It can be used to test the flexibility, impact resistance, elasticity,optical transparency, low temperature flexibility, adhesion, environmental stress cracking resistance, weather resistance, chemical resistance, heat sealing.

With the development of the photovoltaic industry today, solar energy has become an important part of human energy and is still developing. As a protective material for photovoltaic modules, EVA film is one of the most critical materials in its production process. Research on EVA film can help photovoltaic companies better utilize solar energy and move closer to the goal of carbon neutrality. For this purpose, Millennial Solar has produced the highly efficient Millennial EVA Crosslinking Degree Test System, which can accurately measure various properties and cross-linking degrees of EVA film, thereby helping photovoltaic module manufacturers produce high-quality solar modules more efficiently!