For over a decade, PVDF (Polyvinylidene Fluoride) has been the "gold standard" for the outer protective layer of solar backsheets. However, the solar industry is currently witnessing a massive strategic shift toward High-Reliability Hydrolysis Resistant PET. This move is driven by three critical factors: environmental sustainability (PFAS regulations), supply chain stability, and cost-efficiency.
Yuxing’s Advanced Hydrolysis Resistance Technology Standard PET is prone to degradation when exposed to long-term moisture and heat—a process known as hydrolysis. Yuxing has overcome this barrier through precise polymer engineering. By controlling the Carboxyl End Group (CEG) content to extremely low levels and incorporating specialized hydrolysis stabilizers, our PET film achieves industrial-leading weatherability.
Why the Industry is Shifting:
Tested Durability: Yuxing’s film has successfully passed Highly Accelerated Stress Tests (HAST) and Damp Heat (DH) tests exceeding 3,000 hours, ensuring the 25-year service life required for Tier-1 solar modules.
Environmental Impact: As global regulations tighten on fluorinated materials (PFAS), PET offers a "green" alternative that is easier to recycle and has a lower carbon footprint during production.
Optical & Adhesion Benefits: Our hydrolysis-resistant PET provides superior adhesion to EVA/POE encapsulants and better UV reflectivity, which can marginally enhance the overall module efficiency compared to traditional fluoropolymer films.