Photovoltaic sealing strip is a key component specifically used for the installation and sealing of solar photovoltaic panels. Its main function is to ensure that the connections between photovoltaic panels have good waterproof, dustproof, weather resistant, and anti-aging performance, in order to ensure the long-term stable operation of the photovoltaic system. The following is a detailed description of photovoltaic sealing strips:
1, Material and Characteristics
1. Main material: Photovoltaic sealing strips are usually made of ethylene propylene diene monomer (EPDM) or silicone.
Ethylene propylene diene monomer (EPDM): It has excellent heat resistance, weather resistance, ozone resistance, as well as strong tensile strength, good elasticity and temperature resistance (-40 ºC~120 ºC), strong aging resistance, and excellent physical and mechanical properties.
Silicone: It has good high temperature resistance (150-200 ºC) and low temperature resistance (-40-60 ºC), aging resistance, chemical corrosion resistance, and good electrical insulation properties.
2. Characteristics:
Waterproof and dustproof: It can effectively block rainwater and dust from entering the interior of the photovoltaic panel, protecting the photovoltaic panel from damage.
Weather resistant and aging resistant: It can resist the erosion of natural factors such as ultraviolet rays and ozone, and will not crack or deform after long-term use.
High elasticity: It has good resilience and resistance to compression deformation, adapting to the expansion and contraction of photovoltaic panels due to temperature changes.
Easy to install: The design is reasonable, the installation is simple, and it can improve construction efficiency.
2, Type and shape
1. Type: Depending on the material and performance, photovoltaic sealing strips can be divided into EPDM rubber sealing strips and silicone sealing strips.
2. Shape: Photovoltaic sealing strips come in various shapes, including T, D, P, O, etc., to meet the sealing needs of different photovoltaic panel connections.
3, Application and Function
1. Application: Photovoltaic sealing strips are widely used in the installation and sealing of solar photovoltaic panels, such as photovoltaic module frames, gaps between photovoltaic panels, and connections between junction boxes and photovoltaic panels.
2. Function:
Sealed and waterproof: prevents rainwater from seeping into the interior of the photovoltaic panel, protecting the circuit and components from moisture and corrosion.
• Buffer and shock absorption: When the photovoltaic panel is subjected to external impact, it can play a certain buffering role, protecting the photovoltaic panel from damage.
• Improve energy efficiency: Good sealing performance helps reduce dust accumulation on the surface of photovoltaic panels and improve photovoltaic conversion efficiency.
4, Selection and installation precautions
1. Selection: When choosing photovoltaic sealing strips, it is necessary to comprehensively consider factors such as the material, size, and installation environment of the photovoltaic panel, and select the appropriate material, shape, and size of the sealing strip.
2. Installation:
Clean the surface: Before installation, ensure that the surface of the photovoltaic panel connection is clean, dry, free of oil stains and impurities.
• Correct installation: Follow the installation instructions of the sealing strip to ensure that it is installed in place without omission or misalignment.
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