Tetra Functional Vinyl Silane｜High Uniform Cross linking System for Synergistic Upgrade of Silicone Rubber in Strength, Heat Resistance and Yellowing Resistance ChangFu TKVM

In high‑end manufacturing sectors including medical seals, automotive rubber‑plastic components and precision electronics, conventional cross‑linkers commonly suffer from uneven cross‑link density, high volatility and precipitation at elevated temperatures, poor balance between mechanical strength and elasticity, and insufficient long‑term thermal‑aging performance. To address these application drawbacks, ChangFu Chemical presents ChangFu^® TKVM (Tetrakis(vinyldimethylsiloxy)silane, CAS: 60111‑54‑8), a tetra‑functional silicone cross‑linking additive. Leveraging its distinctive tetra‑functional structure, ChangFu^® TKVM enables uniform and controllable cross‑linking reactions, effectively optimizes the vulcanization system of silicone rubber, balances processability and overall finished‑part performance, and facilitates comprehensive performance improvements for high‑end silicone rubber articles.

Distinctive Molecular Structure for High‑Performance Cross‑linking System

ChangFu^® TKVM features a central silicon atom bonded to four vinyldimethylsiloxy side‑chains. Compared with conventional difunctional silanes and ordinary tetra‑functional silanes, this structure undergoes hydrosilylation reaction with Si‑H‑containing silicone rubber to form a dense and stable three‑dimensional cross‑linked network. It resolves industrial challenges such as uneven cross‑linking, property fluctuation and poor molding stability of end products.

Product Features

l  High cross‑linking activity with greatly enhanced mechanical properties

Four reactive sites participate in cross‑linking simultaneously to build a homogeneous and compact cross‑linked network. It remarkably improves tensile strength, tear resistance and dimensional stability of silicone rubber, mitigates deformation and damage of finished goods, and suits high‑durability and high‑load service conditions.

l  Low volatility and superior heat resistance for extreme high‑temperature service

Benefiting from robust molecular structural stability, the product exhibits low volatility during high‑temperature processing and long‑term service. It effectively avoids high‑temperature foaming, shrinkage and performance degradation of silicone rubber, and greatly boosts thermal‑aging resistance as well as thermal‑cycling tolerance for harsh high‑temperature working environments.

l  Balanced stiffness‑flexibility for high‑frequency sealing scenarios

Modified silicone rubber delivers outstanding flexibility combined with mechanical strength, with excellent resistance to repeated bending and deformation. It can steadily serve dynamic‑sealing and frequent‑opening‑closing operating requirements over long periods.

l  Unique structure ensuring stability for high‑end formulations

The exclusive tetra‑vinyl side‑chain structure endows the product with proprietary reactivity and precisely tunable cross‑link density. It cannot be easily substituted by ordinary cross‑linkers in high‑end silicone rubber formulations and guarantees standardized and long‑lasting quality of premium products.

Product Applications

✅ Automotive rubber‑plastic sealing parts

Suitable for sealing systems of automotive engines and on‑board precision components. It improves thermal‑cycling resistance, anti‑aging property and insulating sealing performance of silicone rubber, withstands complex on‑vehicle working conditions for long‑term stable sealing free of leakage and failure.

✅ Precision‑electronic silicone rubber materials

Applied in silicone rubber for electronic sealing and potting. It significantly optimizes electrical insulation and thermal‑shock resistance, alleviates high‑temperature cracking and insulation degradation, and secures long‑term stable operation of precision electronic devices.

✅ Optical‑grade silicone materials

While retaining high transmittance of base materials, it substantially enhances anti‑yellowing and weathering‑aging resistance and solves yellowing and light‑transmittance decline of optical silicone rubber after long‑term service.

✅ Special‑functional silicone materials

Used for modification of high‑performance silicone coatings and silicone‑based 3D‑printing resins. It improves weather‑resistant adhesion of coatings, molding accuracy and inter‑layer bonding strength of printing resins to meet requirements of emerging high‑end materials.

For core requirements of high‑end silicone rubber including high strength, superior heat resistance, high transparency, anti‑aging performance and controllable property stability, ChangFu^® TKVM, with its proprietary molecular architecture and excellent cross‑linking‑modification capacity, acts as a preferred core additive for formulation upgrading, product quality improvement and building differentiated competitive advantages for high‑end silicone rubber.(Note: Actual application performance shall be determined according to practical service conditions. Please contact our technical team for further product information and technical support.)

For more product documents and application details, please contact:

Mobile: (+86)181‑6277‑0058

E‑mail: sales@cfsilanes.com

Key words:  Tetrakis(vinyldimethylsiloxy)silane; CAS: 60111‑54‑8; Silicone rubber; High cross-linking;  Low volatility; Superior heat resistance.