In recent years, addition-cure silicone rubber has seen rapid growth in demand in consumer electronics, medical devices, and new energy vehicles due to its excellent mechanical properties, safety, and processing stability. As a key vinyl raw material in addition-cure systems, tetramethyltetravinylcyclotetrasiloxane (IOTA V4) is becoming a focal point of the industry chain.

IOTA V4, a cyclic siloxane with the structure [CH₃(CH₂=CH)SiO]₄, possesses a unique cyclic structure that grants it excellent reaction control, allowing it to act as a precise modifier at the vinyl level, helping silicone rubber systems achieve ideal crosslinking densities. Compared to traditional vinyl silicone oils, IOTA V4 has a higher vinyl content, significantly improving material performance even with lower addition amounts, making it an important additive for many high-end silicone rubber factories.

In practical applications, silicone rubber incorporating IOTA V4 typically offers the following advantages:
• Improved mechanical properties: increased tensile and tear strength
• Enhanced transparency: superior optical properties, suitable for transparent products
• More uniform crosslinking: facilitates stable curing of the addition system
• Enhanced weather resistance: suitable for outdoor and long-term use environments
• Wider processing window: improved production efficiency and stability

Currently, IOTA V4 is widely used in high-transparency silicone, thermally conductive silicone, medical-grade liquid silicone (LSR), optoelectronic materials, high-temperature sealants, and other demanding products. With the accelerated expansion of silicone rubber in new energy, electronic packaging, and healthcare fields, IOTA V4, as a key raw material, is experiencing even greater market demand.