ChangFu® VM12H – Low-Viscosity Hydrophobic Siloxane for Enhanced Thermal Interface Materials & Filler Treatment.

ChangFu^® VM12H {1,1,3,3-tetramethyl-1-[2-(trimethoxysilyl)ethyl]disiloxane; CAS: 137407-65-9} is a hydrogen-containing siloxane developed by ChangFu Chemical. It delivers strong interfacial adhesion, excellent structural stability, and improved processability—effectively reducing interfacial thermal resistance while enhancing system reliability. As a result, it has become a key additive in the formulation of high-performance thermal interface materials (TIMs) and thermally conductive packaging solutions.

Key Features：

n   High Hydrophobicity – Its flexible tetramethyl disiloxane segments convert hydrophilic inorganic surfaces into durably hydrophobic ones.

n   Excellent Viscosity Reduction & Dispersion – Significantly lowers viscosity in highly filled systems and prevents particle agglomeration through steric hindrance for long-term dispersion stability.

n   Superior Interfacial Reinforcement – Builds a stable bond between inorganic fillers and organic polymers, noticeably improving the mechanical properties of composites.

Applications：

1.     High-Performance Composites – Coatings, Inks & Adhesives

l   Hydrophobic/Self-Cleaning Coatings – Imparts lasting water resistance and anti-fouling properties.

l   Inorganic Pigment Treatment – Enhances dispersion stability, color strength, gloss, and printability.

l   Silicone Sealants – Optimizes filler performance, improves strength, and enhances extrusion processability.

2.     High-Performance Thermal Interface & Encapsulation Materials

l   Thermal Gel/Potting Compounds – Improves flow for complex potting applications; ensures uniform thermal conductivity and low stress after curing.

l   Thermally Conductive Insulating Films – Treats flake-type high-thermal-conductivity fillers (e.g., boron nitride) to produce flexible, insulating, and thermally conductive films for high-power device cooling.

l   Epoxy & Silicone Encapsulants – Reduces system viscosity, increases filler loading and thermal conductivity, and helps control the coefficient of thermal expansion (CTE).

3.     Silicone Rubber & Resin Modification

l   Fumed Silica Treatment – Improves dispersion in raw rubber, reduces structuring, and significantly boosts the strength and transparency of vulcanized rubber.

l   Liquid Silicone Rubber (LSR) – Maintains processing fluidity while enhancing the mechanical properties of finished parts.

l   Self-Adhesive Silicone Rubber – Strengthens adhesion to metals, plastics, and other substrates.

For more product and application details, please contact:

Phone: (+86) 181-6277-0058

Email: sales@cfsilanes.com

Key words:CAS: 137407-65-9; 1,1,3,3-tetramethyl-1-[2-(trimethoxysilyl)ethyl]disiloxane; Hydrophobic.