Methyl Hydrogen Silicone Fluid

Basic Product Information

• Product Name: Methyl hydrogen siloxane
• Appearance: Colorless to pale yellow transparent oily liquid.

TYPICAL PROPERTIES

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Physical Properties

• Appearance: Colorless to pale yellow transparent oily liquid
• Viscosity: 50–10,000 mPa·s (adjustable)
• Temperature resistance: Stable at -40°C to 200°C
• Low surface tension: 20–22 mN/m

Chemical Properties

• Active groups: Contains Si-H bonds, capable of participating in cross-linking, addition, hydrolysis, and other reactions
• Compatibility: Exhibits good compatibility with silicones, resins, fibers, and other materials
• Safety: Non-toxic, compliant with RoHS/REACH standards

Product Functions

• Cross-Linking & Curing

As a cross-linking agent, reacts with vinyl silicone oil to form highly elastic silicone rubber (e.g., LSR, HTV), enhancing mechanical properties. Ideal for automotive seals, electronic encapsulation, and similar applications.

• Hydrophobic Modification

Forms a durable waterproof layer on material surfaces via Si-H bond reactions, offering strong weather resistance. Suitable for architectural coatings, waterproof textiles, and related fields.

• Functional Grafting

Si-H bonds enable grafting of antibacterial agents or hydrophilic molecules, imparting materials with antibacterial properties (medical devices) or hydrophilicity (cosmetics, biomaterials).

• Defoaming & Lubrication

Leverages low surface tension to serve as defoaming agents (food, chemical industries) and lubricants (metal processing, precision instruments), effectively reducing foam and friction.

Applications

Textile Industry

• Waterproofing Finishing Agent

Forms a waterproof molecular film on fabric surfaces, enhancing water resistance of cotton, linen, and other textiles without compromising breathability or texture.

• Softening Agent

Reduces fiber friction to deliver softness, smoothness, and elasticity. Ideal for premium fabrics and infant/child textiles.

• Antistatic Agent

Creates a conductive layer on fabrics to dissipate static electricity. Used in antistatic textiles for electronics industry workwear.

Leather Processing

• Waterproofing & Fatliquoring Agent

Provides waterproofing and oil replenishment for leather, improving flexibility and preventing hardening/cracking.

• Coating Additive

Enhances adhesion, flexibility, and abrasion resistance of leather coatings, improving aesthetics and durability of leather products.

Building Materials

• Concrete Waterproofing Agent

Reacts with concrete components to fill pores, used for waterproofing basements and other concrete structures.

• Stone Protective Agent

Forms a protective film on stone surfaces to prevent erosion and preserve color/texture. Applied to architectural stone materials.

• Release Agent

Creates aIsolation membrane between molds and concrete for smooth demolding, surface integrity, and reduced mold damage.

Daily Chemicals & Personal Care

• Hair Care Products

Forms a protective film on hair to smooth strands and prevent dryness/splitting. Used in shampoos and conditioners.

• Skincare Additives

Enhances skin hydration and ingredient penetration while improving texture. Applied in creams and lotions.

Medical & Biomaterials

• Medical Defoamer

Rapidly eliminates foam during medical procedures, with excellent biocompatibility.

• Medical Device Coatings

Forms lubricious, biocompatible coatings on instruments to reduce friction, prevent corrosion, and extend service life.

• Drug Sustained-Release Carrier

Encapsulates drugs for controlled release, maintaining efficacy while reducing dosing frequency and side effects.

Agriculture

• Plant Growth Promoter

Enhances nutrient absorption, metabolism, and photosynthesis to boost crop yield and quality.

• Pesticide Synergist

Reduces pesticide solution surface tension to improve adhesion, penetration, and efficacy, minimizing pesticide usage.

Industrial Applications

• Electronics Encapsulation Moisture Barrier

Prevents moisture ingress into electronic components, improving device reliability.

• Optical Coatings

Forms anti-reflective or light-enhancing films on optical elements to optimize imaging quality.

• Lubricant

Reduces mechanical wear, lowers energy consumption, and extends equipment lifespan in industrial machinery.

Silicone Rubber Industry

• Addition-Cured Liquid Silicone Rubber (LSR)

Keypads: High rebound elasticity for extended durability.

Nipples: Food-grade safety compliance; withstands high-temperature sterilization.

Medical Devices: Biocompatible applications like respiratory masks and catheter connectors.

• High-Temperature Vulcanized Silicone Rubber (HTV)

Cables: Flame-retardant, high-voltage resistance for automotive/aerospace wiring.

Seals: Oil/chemical-resistant for industrial equipment and automotive components.

Core Advantages

Experimental Data & Case Studies

• Experimental Data

• Case Study Analysis

Case 1: Automotive Sealant Performance Enhancement

Issue: A car manufacturer’s sealant exhibited cracking at low temperatures.

Solution: Added hydrogen silicone oil with 0.8% hydrogen content as a cross-linking agent.

Result: Elasticity retention rate at -40°C improved from 60% to 85% (tested per ISO 3387).

Case 2: Long-Lasting Cosmetic Waterproofing

Requirement: Extend the wear time of waterproof mascara.

Experiment: Incorporated 1% hydrogen silicone oil into the formula.

Result: Simulated sweat resistance testing showed waterproof duration increased from 4h to 8h (in vitro testing).

Usage Methods & Precautions

Usage Methods

• Cross-Linking Reaction (Silicone Rubber Preparation)
• Ratio: Hydrogen silicone oil : vinyl silicone oil = 1:100–10 (based on molar ratio of Si-H to Si-Vi).
• Catalysis: Add 1–50 ppm platinum catalyst (e.g., Karstedt catalyst).
• Curing: Temperature range: room temperature to 150 °C; curing time adjusted according to material thickness.
• Waterproofing Treatment (Textiles/Building Materials)
• Dilution: Dilute with toluene or water to 10%–30% concentration (emulsified form).
• Process: Apply via spraying or dip-coating, followed by drying/curing at 80–180 °C.
• Defoamer Preparation

Directly add 0.1%–1% to the system and disperse uniformly under high-speed mixing.

Precautions

• Storage: Store in a sealed, light-proof container. Avoid contact with strong oxidizers, acids, or bases.
• Safety: Wear protective gloves during handling; ensure proper ventilation.

Packaging & Ordering

Packaging: 200kg/1000kg plastic drums (customizable).