Description

Ethenyltriethoxysilane Reaction Products With Silica are a class of functionalized silica materials, where the silica surface is chemically modified with ethenyltriethoxysilane groups. This modification is crucial for creating a reactive, organophilic interface on an inorganic substrate, enabling strong covalent bonding with organic polymers. These products are essential for formulators and material scientists seeking to enhance the mechanical properties, dispersion, and compatibility of silica fillers within various polymer matrices. Key industries that rely on this technology include advanced composites, specialty adhesives, and high-performance elastomers.

Application

• Reinforcing Filler for Elastomers: Used in silicone rubber and other specialty elastomers to improve tensile strength, tear resistance, and modulus.
• Coupling Agent in Composite Materials: Enhances the interfacial adhesion between silica fillers and polymer resins in fiber-reinforced plastics (FRP) and engineering thermoplastics.
• Surface Modification for Coatings: Imparts improved scratch resistance, adhesion, and weather durability to industrial and protective coatings.
• Adhesive and Sealant Formulations: Acts as an adhesion promoter and rheology modifier, providing better cohesion and long-term durability.
• Specialty Additive for Plastics: Used to modify the surface properties of silica for better dispersion and performance in compounded masterbatches.
• Research & Development: Serves as a key intermediate for developing novel hybrid organic-inorganic materials (ORMOSILs) with tailored properties.

Basic Information

Product Name	Ethenyltriethoxysilane Reaction Products With Silica
CAS No.	219916-67-3
Molecular Formula	Complex mixture / Modified SiO2
Molecular Weight	N/A (Variable based on silica particle size and degree of functionalization)
Synonyms	Vinyltriethoxysilane-treated silica; Silica, reaction products with ethenyltriethoxysilane; VTES-modified silica; Organosilane-modified silica; Surface-modified silica with vinyltriethoxysilane; Functionalized silica filler; Silane-treated silica; ORMOSIL precursor
EINECS	Contact for details

Quality Control

Our production of Ethenyltriethoxysilane Reaction Products With Silica adheres to a strict quality management system. Each batch is characterized for critical parameters including degree of functionalization, surface area, particle size distribution, and loss on ignition to ensure consistent performance. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We are committed to meeting the relevant ISO 9001 standards for quality assurance in chemical manufacturing.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder
Loss on Drying	≤ 2.0 %
Silica Content (as SiO2)	≥ 90 %
Carbon Content (C)	3 - 8 %
Specific Surface Area (BET)	50 - 400 m²/g
Particle Size (D50)	1 - 20 µm
pH (in aqueous suspension)	4.0 - 7.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.