Product Name:Vinyl Terminated Silicone Fluid NV-SiVi280

Alias:α,ω vinyl silicone fluid;Vinyl terminated polydimethylsiloxane

Product Code:NV-SIVI280

Chemical Information

Main Composition:Vinyl terminated polydimethylsiloxane

Molecular Structure:CH₂=CH-(CH₃)SiO[Si(CH₃)₂O]nSi(CH₃)CH=CH₂

Chemical Character:

A linear polydimethylsiloxane chain capped with reactive vinyl groups at both ends, serving as the base polymer for silicone elastomers to provide controlled network formation through hydrosilylation.

Cas No.:68083-19-2

Typical properties

Appearance: Colourless transparent liquid

Density(25℃，g/cm3)： 0.9600-0.9900

Refractive index:  1.4010-1.4080

* The viscosity can be customed according to your request.

Key Features & Benefits

Controlled Network: Provides a precise, linear chain extension, resulting in high tensile strength and excellent elongation in the cured elastomer.

Optical Clarity: Offers superior transparency and low volatile content, ensuring stable performance in sensitive environments.

Rheological Stability: Exhibits consistent viscosity and excellent flow properties for easy processing.

Applicatiions:

Base Polymer: The primary ingredient for Addition-cure Liquid Silicone Rubber (LSR) and High Consistency Rubber (HCR).

Encapsulants: Used in LED packaging and electronic potting for moisture and thermal protection.

Silicone Gels: Ideal for medical-grade adhesives and cushioning materials.

Recommended Dosage Guidelines:

Role: Base Polymer / Matrix

Recommended Dosage: 80–100 phr

Guidance: * This serves as the primary structural component.

To optimize processing and mechanical properties, it is often used as a blend of different viscosities (e.g., combining low-viscosity fluid for flow and high-viscosity fluid for strength).

Transportation & storage:

This product is active chemical. Impurities (especially catalyst) shall not be mixed in the process of storage and transportation.

Attention should be paid to whether other materials can react chemically.

Be stored in a clean,airtight plastic or plastic coated metal drum.

Shelf life:24 months.

Package:

190kg-200kg/plastic or metal drums,950kg-1000kg/IBC.