Product name : Silicone fluid NV-SIH-MH-*

Alias:Side and End Hydride silicone fluid; Pendant & Terminated Hydride Silicone Fluid

Product Code: NV-SIH-MH-*

Chemical Information

Main Component:Methylhydrosiloxane - dimethylsiloxane copolymers,hydride terminated

Cas No.:69013-23-6

Molecular Structure:H(CH₃)₂SiO[(CH₃)HSiO]_m[(CH₃)₂SiO]_nSi(CH₃)₂H

Product Description

This product is a specialized methylhydrosiloxane-dimethylsiloxane copolymer terminated with reactive hydride groups at both ends, in addition to having active $\text{Si-H}$ functional groups along the backbone. This dual-functional structure offers unique crosslinking chemistry, combining rapid curing kinetics with tailored network architectures.

Specifications

Appearance:Colorless transparent liquid

** The specifications can be customed according to your request.

Key Benefits & Features

Dual-Reactive Structure: Features both terminal and internal $\text{Si-H}$ groups, maximizing formulation flexibility.

Rapid Cure Kinetics: Fast reaction rates in platinum-catalyzed hydrosilylation systems due to highly accessible terminal hydrides.

Tailored Network Modification: Allows simultaneous chain extension and crosslinking, balancing hardness and elasticity.

Superior Adhesion Promotion: Enhances bonding strength to various substrates in adhesive and sealant formulations.

Applications

High-Performance Crosslinkers: Used in fast-curing silicone elastomers, coatings, and potting compounds where cycle time is critical.

Adhesives & Sealants: Active ingredient in pressure-sensitive adhesives (PSA) and specialty sealants to improve mechanical properties and substrate adhesion.

Specialty Modifiers: Used to synthesize complex grafted or block copolymers requiring highly dense functionalization.

Handling & Precautions

Hydrogen Evolution: These products contain active Si-H bonds which can react with water, alcohols, acids, bases, or metal salts to release hydrogen gas. Ensure containers are opened carefully to vent any potential pressure build-up.

Contamination Control: Avoid contact with "platinum poisons" such as compounds containing sulfur (S), phosphorus (P), nitrogen (N), and heavy metal salts (e.g., tin, lead). Contamination can inhibit the catalytic activity in downstream addition-cure applications.

Ventilation & Safety: Use only in well-ventilated areas. Wear appropriate personal protective equipment (PPE), including safety goggles and chemical-resistant gloves, to prevent skin and eye irritation.

Avoid Ignition Sources: Hydrogen gas is highly flammable. Keep away from heat, sparks, open flames, and static discharge. Use non-sparking tools during handling.

Moisture Sensitivity: Keep containers tightly sealed when not in use. Exposure to atmospheric moisture can lead to a gradual loss of active hydride content.

Packaging & Shelf Life

Packaging: Available in 25 kg plastic pails, 200 kg plastic-lined steel drums, or 1000 kg IBC tanks. Custom packaging is available upon request.

Storage Conditions: Store in a cool, dry, and well-ventilated warehouse. Keep containers upright and shielded from direct sunlight and rain. Recommended storage temperature: 5°C – 30°C.

Shelf Life: The standard shelf life is 12 months from the date of manufacture when stored in the original, unopened containers.

Post-Shelf Life Use: Products exceeding the shelf life should be re-tested for Si-H content and appearance before use to ensure they still meet the required specifications.