UL Solutions Issues First Outdoor Weather Resistance UL Certification for Composite Frame to Wolai New Materials

Recently, global safety science expert UL Solutions awarded Jiangsu Wolai New Materials Co., Ltd. (hereinafter referred to as "Wolai New Materials") the UL 746C certification for outdoor weatherability suitability for its photovoltaic module frame composite material WL-303.

This composite material is continuous glass fiber-reinforced polyurethane produced by pultrusion, with one side coated with a polyurethane layer. It boasts excellent performance and is an ideal material to replace aluminum alloy frames for photovoltaic modules, helping photovoltaic module manufacturers reduce costs and improve efficiency. In the pultrusion process of continuous fiber-reinforced polyurethane composites, more reinforcing fibers can be used, significantly enhancing the strength of the product. The resin and fibers complement each other well in terms of performance. Therefore, fiber-reinforced materials produced by pultrusion using polyurethane resin as the matrix have the following properties and characteristics: lightweight and high strength, good corrosion resistance, excellent dimensional stability, and strong designability. The recent UL Solutions tests for outdoor weather resistance, UV resistance, and water immersion have further confirmed this product’s important suitability for use in photovoltaic module frames.

Anti-ultraviolet and immersion test

According to the standard UL 746C, Polymeric Materials - Use in Electrical Equipment Evaluations, the mechanical properties and flammability of materials are evaluated after ultraviolet (UV) aging and water immersion to determine their suitability for outdoor use. The outdoor suitability of the material is related to its color and thickness.

The content to be tested and the conditions that need to be met are as follows:

Outdoor weather-resistant materials generally have two types of suffixes in the product model name.

(f1) indicates that the material has passed all outdoor usage assessment tests.

(f2) indicates that the material has only passed either the UV resistance test or the water immersion test. The acceptability of the result needs to be specifically evaluated based on the end-use location of the product.

About Volai New Materials

Jiangsu Wolai New Materials Co., Ltd., established in 2021, is an innovative enterprise specializing in the field of photovoltaic composite material frames. The company holds multiple exclusive patents for frame design, installation structures, and connection methods, and is also the leading drafter of the group standard for composite material frames. Wolai has introduced advanced production equipment and processes, integrated the world’s best supply chain resources, and collaborates deeply with partners in the photovoltaic industry to provide high-quality and most reliable products for the sector. In the future, Wolai New Materials will continue to drive development through technological innovation, maintain customer satisfaction as its core value, and offer high-quality photovoltaic composite material frame products and excellent services.