High-weather-resistant EVA film: A clean energy "shield" for high-altitude photovoltaic power stations.
Performance Challenges in Harsh Environments
A 100MW high-altitude photovoltaic power station, a benchmark project for regional energy transformation, is located in a high-radiation area above 3000 meters, facing multiple extreme operating conditions: the annual average ultraviolet radiation intensity reaches 6000MJ/m², far exceeding that of plains areas; the diurnal temperature range can reach up to 40℃, easily causing materials to age due to thermal expansion and contraction; humidity remains above 80% during the rainy season, increasing the risk of module moisture damage. Traditional EVA films often exhibit problems such as decreased light transmittance, weakened adhesion, and insufficient anti-aging performance in these environments, seriously affecting the long-term operation of the power station.
Customized R&D: Precisely Solving Operating Condition Challenges
To meet the project's needs, Shengding New Materials assembled a dedicated technical team to investigate the core requirements of encapsulation materials in the high-altitude environment. Through formula optimization and process innovation, they created a custom-designed high-weather-resistant EVA film:
- Ultra-high light transmittance: Utilizing optical-grade substrates and a precise formula, the light transmittance reaches up to 93.8%, maximizing the light absorption efficiency of photovoltaic modules and helping to increase the power station's annual power generation by more than 3%.
- Excellent Weather Resistance: Verified by third-party testing, it can withstand extreme temperature cycles from -40℃ to 85℃, and its performance degradation rate after UV aging testing is less than 5%, far exceeding the industry standard GB/T 20284-2015.
- Strong Adhesion and Anti-PID Performance: With an adhesion strength ≥1.5MPa, it can firmly adhere to the glass and backsheet, effectively preventing module delamination; it also possesses excellent resistance to PID (potential-induced degradation), ensuring 25 years of long-term stable operation of the module.
Comprehensive Process Control: Zero-Blind-spot Quality Assurance
From project initiation to mass delivery, Shengding New Materials has established a comprehensive quality control system: In the early stages, it deeply engages with customers to understand their technical needs, repeatedly optimizing the formula and conducting sample testing; during the production stage, it employs precision extrusion technology, strictly controlling the film thickness uniformity (error ≤ ±0.02mm); before finished products leave the warehouse, each roll of EVA film undergoes multiple tests, including light transmittance, adhesion, and aging resistance, ensuring stable and reliable product quality.
Project Implementation: Empowering Green Energy Transition
After its deployment in a high-altitude photovoltaic power station, this high-weather-resistant EVA film not only provided comprehensive encapsulation and protection for the modules, effectively resisting the erosion of extreme environments, but also helped the power station achieve an annual carbon dioxide emission reduction of over 12,000 tons, becoming a model for regional green energy transformation. Currently, Shengding New Materials' customized EVA films are widely used in photovoltaic projects in various scenarios worldwide, including high-altitude areas, deserts, and coastal regions. With its professional technical solutions and reliable quality, it has won high recognition from customers both domestically and internationally.
In today's rapidly developing clean energy industry, upgrading the performance of EVA films has become crucial for enhancing the competitiveness of photovoltaic power stations. Shengding New Materials will continue to be driven by innovation, deeply cultivating the field of new materials, and providing high-quality customized EVA film solutions for photovoltaic projects in various harsh environments worldwide, contributing to the early achievement of carbon neutrality goals!
