How does the UV resistance of polyester fabric differ from acrylic fabric?

When comparing the UV resistance of polyester fabric and acrylic fabric, several key differences emerge. Polyester fabric is known for its excellent UV resistance, as its tightly woven fibers naturally block a significant amount of ultraviolet (UV) radiation. This makes polyester a popular choice for outdoor applications such as awnings, umbrellas, and outdoor furniture covers. Additionally, polyester can be treated with UV-resistant coatings to further enhance its protective properties.

On the other hand, acrylic fabric, while durable and lightweight, generally offers less inherent UV resistance compared to polyester. Acrylic fibers are more prone to degradation when exposed to prolonged sunlight, which can lead to fading and weakening over time. However, some acrylic fabrics are treated with UV inhibitors to improve their performance under sunlight.

In summary, polyester fabric typically provides superior UV resistance compared to acrylic fabric, making it a better option for applications requiring long-term exposure to sunlight. Acrylic fabric, while still useful, may require additional treatments to achieve comparable UV protection.