In the field of LED packaging, a low-refractive-index methyl-based encapsulant named IOTA LEDL 3220 is gaining widespread market attention for its outstanding sulfur resistance and strong adhesion. This innovative product not only solves the common problems of traditional packaging materials—such as easy vulcanization and detachment—but also provides a strong guarantee for the long-term stable operation of LED products.

The sulfur resistance of IOTA LEDL 3220 is particularly prominent. In environments containing corrosive substances like sulfur, traditional packaging materials are often prone to vulcanization, leading to yellowing, embrittlement, or even peeling of the encapsulant. IOTA LEDL 3220, however, effectively resists sulfur erosion thanks to its unique chemical formulation, maintaining long-term transparency and stability of the package.

At the same time, the adhesion performance of this encapsulant is also exceptional. Whether bonding with PPA materials or metal substrates, IOTA LEDL 3220 achieves strong and reliable adhesion. This characteristic ensures that LED components maintain structural integrity and functional stability even under harsh conditions such as vibration or impact.

In addition to sulfur resistance and strong adhesion, IOTA LEDL 3220 also excels in optical and physical properties. Its low refractive index of 1.41 effectively enhances the light extraction efficiency of LED light sources. With a Shore A hardness of 60 and an elongation of 110%, the encapsulant exhibits excellent structural strength and impact resistance.

Furthermore, this encapsulant offers a high light transmittance of 92% and a coefficient of linear expansion of 210 ppm, ensuring both the brightness and purity of LED light and the long-term stability of the package.

In practical applications, IOTA LEDL 3220 has been widely used in fields such as COB and integrated LEDs. Whether for commercial lighting, residential lighting, or outdoor lighting projects, it has earned consistent praise from customers for its outstanding performance.