In the process of continuous upgrading of high refractive index LED packaging, high-temperature resistant silicone rubber, special silicone oil, and environmentally friendly flame-retardant materials towards high-performance, functional intermediates with high phenyl content, high refractive index, and halogen-free environmental characteristics are becoming the key to material performance breakthroughs. Our company's product, phenyl cage-like bis-siloxane 6108, as a phenyl bis-siloxane with a stable cage-like molecular structure, demonstrates significant application value in the synthesis of high-temperature resistant silicone rubber, the preparation of high-refractive-index LED packaging adhesives, the synthesis of high-temperature resistant phenyl silicone oil, and the use as synergistic flame-retardant additives in various fields. It provides high-performance silicone-modified core raw materials for customers in various industries.


I. Core Physical and Chemical Properties of the Product


The product phenyl cage-like bis-siloxane 6108 is a white powder with a density of 1.185 ± 0.010 grams per cubic centimeter, a molecular weight range of 800 to 2000, a refractive index of 1.620 ± 0.005, and a softening point of 200 degrees Celsius. This product belongs to phenyl cage-like bis-siloxane and has a high phenyl content and a stable cage-like molecular structure. The high refractive index is due to the high proportion of phenyl groups in the molecule, and the cage-like structure gives it excellent thermal stability and structural regularity. The product does not contain fluorine, chlorine, bromine, etc., and complies with environmental protection regulations such as RoHS and REACH.


II. Core Performance Advantages


The phenyl cage-like bis-siloxane 6108 of the product demonstrates the following core performance advantages in various application systems:


High phenyl content and high refractive index. With a high phenyl content, the product provides excellent thermal stability and high refractive index, with a refractive index of 1.620, significantly higher than that of ordinary organic silicon materials, making it an ideal raw material for preparing high-refractive-index optical packaging systems.


Stable cage-like molecular structure and good transparency. The product has a stable cage-like bis-siloxane framework, outstanding heat resistance and weather resistance, and can maintain good optical transparency in various materials, without affecting the optical performance of the final product.


Environmental-friendly halogen-free flame-retardant characteristics. The product does not contain halogens and can be used as an environmentally friendly halogen-free flame-retardant agent, with good synergistic flame-retardant effect, in line with the development trend of green flame-retardant. Studies have shown that when 6% of octaphenyl cage-like bis-siloxane is added to polycarbonate, the limit oxygen index of the material can be increased to 33.8%, and it can reach UL-94 V-0 level of flame retardancy.


III. Wide Application Areas


The phenyl cage-like bis-siloxane 6108 of the product, with its multi-functional performance combination, can play a key role in the following high-end application areas, specifically including:


1. Synthesis of high-refractive-index LED packaging adhesives. The product can be used to synthesize high-refractive-index phenyl silicone resins, with the refractive index reaching above 1.54. High-refractive-index packaging adhesives can effectively improve the light output efficiency of LED chips, reduce total reflection losses, and the phenyl structure gives the material excellent heat resistance aging performance, ensuring the long-term reliability of LED devices.


2. Synthesis and modification of high-temperature resistant silicone rubber. The product can be used to adjust the phenyl content of silicone rubber, thereby improving the temperature resistance and mechanical properties of the silicone rubber. The introduction of cage-like bis-siloxane structure can also improve the damping performance and thermal stability of the rubber, suitable for special seals and shock-absorbing products in aerospace and automotive fields.


3. Synthesis of high-temperature resistant phenyl silicone oil. The product can be used to synthesize high-phenyl-content phenyl silicone oil, with low vapor pressure and excellent thermal stability, suitable for lubrication, heat transfer, and hydraulic systems in high-temperature conditions.


4. Co-synergistic flame-retardant additives for PC and PC/ABS. The product can be used as an auxiliary flame retardant additive for polycarbonate and its alloy materials. The recommended addition amount is 0.5% to 5%. Research has confirmed that octaphenyl cage-like disiloxane can exert a flame retardant effect by forming a dense carbon layer in the condensed phase, and can effectively improve the flame retardancy of the material at a lower addition amount.


V. Synthesis of Pharmaceutical Intermediates and Organic Silicon Intermediates. The product can be used for the synthesis of pharmaceutical intermediates and special organic silicon intermediates, serving the fields of drug research and fine chemical manufacturing.


IV. Application Methods and Process Recommendations


The recommended addition amount of the product in PC is 0.5% to 3% (2.5 mm thickness) or 0.5% to 5% (1.0 mm or above thickness) to achieve UL-94 V-0 flame retardant grade. The actual formula should be adjusted according to specific application requirements, regulatory restrictions, and processing conditions. It is recommended to conduct small-scale tests for evaluation. The product can be compounded with the base material through methods such as melt blending or solvent dispersion.


V. Packaging Specifications and Storage Conditions


The product phenyl cage-like disiloxane 6108 is packaged in plastic bags or composite cardboard boxes, with a net weight of 25 kilograms per bag. Customization can be made according to customer requirements. The product should be stored in a ventilated and dry environment, avoiding direct sunlight, and the original packaging storage period is 24 months. It is transported as general cargo.


VI. Quality Assurance and Industry Chain Value


The product phenyl cage-like disiloxane 6108 has established a strict quality control system during production. Key indicators such as appearance, density, molecular weight, refractive index, and softening point are tested throughout the process to ensure consistency and reliability between batches. As the demand for high phenyl content functional intermediates in downstream industries such as LED lighting, high-performance silicone rubber, special silicone oil, and environmentally friendly flame retardant materials continues to grow, this product, with its high phenyl content providing thermal stability and high refractive characteristics, environmental-friendly halogen-free flame retardant function, and stable cage-like molecular structure, is becoming an important raw material option in optical packaging, silicone rubber modification, and flame retardant materials fields, providing strong raw material support for promoting product innovation and technological upgrading in related industries.