How does the addition of carbon black affect the UV resistance of polyethylene flower boxes?

The addition of carbon black significantly improves the UV resistance of polyethylene flower boxes, making them more durable for outdoor use. Carbon black acts as a UV stabilizer by absorbing harmful ultraviolet radiation and converting it into heat, thereby preventing polymer degradation. This additive also enhances the structural integrity of polyethylene, reducing cracking and fading caused by prolonged sun exposure. Studies show that flower boxes with carbon black exhibit up to 50% longer lifespan compared to untreated versions. For gardeners and manufacturers, this means cost-effective, long-lasting solutions that maintain aesthetic appeal under harsh weather conditions.