What is Hydroxyl Silicone Oil?

Hydroxyl silicone oil is a reactive polydimethylsiloxane (PDMS) with hydroxyl (-OH) terminal groups, represented by the chemical structure:

HO-Si(CH₃)₂O[Si(CH₃)₂O]ₙSi(CH₃)₂-OH

This unique structure allows it to participate in further chemical reactions, making it a critical intermediate in silicone manufacturing. When its viscosity exceeds 2500 mPa·s, it is commonly referred to as 107 silicone rubber, widely used in industrial and consumer products.

Outstanding Performance Characteristics

Hydroxyl silicone oil offers a combination of properties that outperform many conventional silicone oils:

• Wide Temperature Range: Stable from -50°C to +250°C, suitable for aerospace and automotive applications.

• High Flash Point & Low Freezing Point: Ensures safety and performance in extreme conditions.

• Superb Electrical Insulation: Protects sensitive electronic components from short circuits.

• Chemical & Physiological Inertness: Resists degradation from acids, alkalis, and bodily fluids.

• Low Surface Tension: Enhances spreadability in coatings and release agents.

Industrial and Commercial Uses

Due to its reactive nature, hydroxyl silicone oil is widely used in:

• Silicone Elastomers: Crosslinked into soft, durable rubber for seals, gaskets, and medical devices.

• Waterproof Coatings: Applied in construction and textiles for moisture resistance.

• Personal Care Products: Adds slip and emolliency to lotions, haircare, and cosmetics.

• Industrial Lubricants: Reduces friction in high-temperature machinery.

• Adhesives & Encapsulants: Improves flexibility and adhesion in bonding applications.

Future Innovations with Hydroxyl Silicone Oil

As material science advances, hydroxyl silicone oil continues to enable next-generation innovations, including:

• Flexible Electronics: Used in stretchable circuits and wearable devices.

• Biomedical Implants: Due to its biocompatibility and stability.

• Sustainable Materials: Modified for eco-friendly coatings and adhesives.