Silicone Materials: The Core Support for Efficiency and Durability in the Photovoltaic Industry
Hits: 376
img
Encapsulation Revolution: Building a "Protective Shield" for Photovoltaic Modules
Silicone encapsulant has become the mainstream choice for double-glass modules and flexible photovoltaics. Its core advantage lies in overcoming the weather resistance bottleneck of traditional EVA films. Through molecular structural design, silicone encapsulant materials achieve a transmittance retention of up to 91% in triple accelerated aging tests (DH2000+UV600) under UV, humidity, and salt spray conditions, an 18 percentage point improvement over EVA. LONGi Green Energy's newly launched shingled modules utilize a silicone/POE composite encapsulation system, reducing the water vapor transmission rate from 1.5g/m²·day (of traditional solutions) to 0.2g/m²·day, and extending the module warranty from 25 years to 30 years.
Upgraded Thermal Management: Breaking the "Temperature Shackles" of Power Generation Efficiency
To address heat loss in photovoltaic systems, silicone materials have developed a gradient thermal conductivity solution. In module backsheet applications, thermally conductive silicone pads reduce the operating temperature of solar cells by 12°C, increasing power generation efficiency by 2.3%. In centralized inverters, the silicone rubber tubing used in liquid cooling pipes is three times more resistant to coolant corrosion than the ISO 16750 standard, improving system heat dissipation efficiency by 40%. Data from Trina Solar's 500MW Qinghai project shows that power plants using silicone thermal management systems achieve an average annual power generation increase of 6.8% compared to traditional solutions.
Structural Innovation: Ushering in a New Era of Lightweight and Flexibility
Silicone-based composite materials are driving the development of lightweight and flexible photovoltaic modules. Flexible perovskite cells utilize a silicone/polyimide composite substrate, reducing weight from 18kg/m² of traditional crystalline silicon modules to 3.5kg/m², and enabling a bending radius of up to 5mm. In the building-integrated photovoltaic (BIPV) sector, self-cleaning silicone coatings reduce dust accumulation in glass curtain wall photovoltaic modules by 82%, extending cleaning intervals from monthly to quarterly, and reducing operation and maintenance costs by 65%.