Polyolefins, such as polyethylene (PE) and polypropylene (PP), are ubiquitous in modern manufacturing due to their excellent mechanical properties, chemical resistance, and cost-effectiveness. However, these versatile polymers are inherently susceptible to degradation when exposed to ultraviolet (UV) radiation. This degradation can lead to significant loss of mechanical strength, discoloration, and surface cracking, limiting their outdoor application potential. To combat this, UV absorbers are essential additives. Among the most effective for polyolefins is UV Absorber UV-328 (CAS No. 25973-55-1), a high-performance benzotriazole UV absorber. NINGBO INNO PHARMCHEM CO.,LTD. is a leading manufacturer and supplier offering this critical additive.

The Vulnerability of Polyolefins to UV Radiation

Polyolefins lack the inherent chromophores that absorb UV light in many other polymers. This means that UV radiation can penetrate deeper into the material and initiate photo-oxidative degradation more readily. This is particularly problematic for products like agricultural films, outdoor furniture, automotive components, and packaging that are frequently exposed to sunlight. The resulting degradation not only compromises the product's function but also its appearance.

The Advantages of UV Absorber UV-328 for Polyolefins

UV Absorber UV-328 is specifically recommended for polyolefin applications due to its unique combination of properties:

  • Superior Compatibility: UV-328 exhibits excellent compatibility with polyethylene (PE) and polypropylene (PP). This high compatibility ensures uniform dispersion throughout the polymer matrix, maximizing its protective capabilities and preventing blooming or exudation, which can be problematic with less compatible additives.
  • Broad UV Absorption Spectrum: It effectively absorbs UV light in the critical 270-340 nm range, providing robust protection against the wavelengths most damaging to polyolefins.
  • Low Volatility: Polyolefin processing often involves elevated temperatures. UV-328’s low volatility ensures that the additive remains within the polymer during processing, guaranteeing consistent protection in the final product.
  • High Washing Resistance: For applications like agricultural films or outdoor textiles made from polyolefins, resistance to washing and environmental exposure is key. UV-328's high washing resistance ensures the protective additive stays put, offering long-term performance.

Applications and Sourcing Strategy

UV Absorber UV-328 is widely used in:

  • Agricultural films and mulch films
  • Outdoor furniture and recreational products
  • Automotive parts exposed to sunlight
  • Construction materials such as siding and window profiles
  • Packaging films requiring UV protection for contents

For manufacturers looking to secure a reliable supply of high-quality UV Absorber UV-328, partnering with a reputable manufacturer and supplier in China is essential. NINGBO INNO PHARMCHEM CO.,LTD. offers competitive pricing and ensures that our UV-328 meets the highest purity standards, guaranteeing optimal performance in your polyolefin products. We are committed to supporting your production needs with efficient delivery and dedicated customer service.

Invest in the longevity and performance of your polyolefin products by incorporating UV Absorber UV-328. Contact NINGBO INNO PHARMCHEM CO.,LTD. today to learn more and request your sample.