Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Chem-Art S6518 Silane Coupling Agent

Chem-Art S6518 Silane Coupling Agent is a gamma-methacryloxypropyltrimethoxysilane specialty coupling agent from Chem-Art’s S-series, designed to enhance adhesion between organic polymers and inorganic substrates like glass, metals or fillers in composites, coatings and adhesives—offering superior hydrolytic stability and covalent bonding efficiency.
  • chem art s6518 silane coupling agent_3443888b
  • chem art s6518 silane coupling agent_3443888b

Features Of Chem-Art S6518 Silane Coupling Agent

  1. Highly reactive γ-glycidoxypropyl functional group enables strong covalent bonding with both organic polymers and inorganic substrates.

  2. Excellent hydrolytic stability in neutral to mildly acidic aqueous systems, supporting robust storage and processing performance.

  3. Low volatility and favorable handling safety profile compared to chlorosilane-based alternatives.

  4. Enhances interfacial adhesion in filled composites, significantly improving tensile strength and moisture resistance.

  5. Compatible with common industrial coating, adhesive, and sealant formulations without requiring catalysts or extreme pH adjustment.

Typical Applications Of Chem-Art S6518 Silane Coupling Agent

  1. Reinforced epoxy and polyester composites for automotive and aerospace structural parts.

  2. Mineral-filled rubber compounds, including silica-reinforced tires and industrial elastomers.

  3. Waterborne and solvent-based primers for metal, glass, and concrete substrates.

  4. Adhesive and sealant formulations requiring durable bond integrity under humid or thermal cycling conditions.

  5. Surface treatment of fillers (e.g., calcium carbonate, talc, clay) prior to incorporation into thermoplastics and thermosets.

Specifications Of Chem-Art S6518 Silane Coupling Agent

Chemical Typeγ-Glycidoxypropyltrimethoxysilane
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Density (25°C)1.07–1.09 g/cm³
Refractive Index (25°C)1.425–1.435
pH (1% aqueous solution)4.0–6.0
SolubilityMiscible with alcohols, acetone, and aromatic hydrocarbons; partially miscible with water (hydrolyzes slowly)
Storage Stability≥12 months in sealed container at 5–30°C


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