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

Domestic KH171 LT171 Vinyltrimethoxysilane

Domestic KH171 LT171 Vinyltrimethoxysilane is a high-purity vinyl-functional silane coupling agent from the KH171 series (LT171 grade), widely used in silicone rubber, adhesives and coatings to enhance polymer-filler bonding, improve mechanical strength and moisture resistance. It offers excellent hydrolytic stability and compatibility with organic resins.
  • domestic kh171 lt171 vinyltrimethoxysilane_979e8151
  • domestic kh171 lt171 vinyltrimethoxysilane_979e8151

Features Of Domestic KH171 LT171 Vinyltrimethoxysilane

  1. High-purity vinyl-functional silane with excellent hydrolytic stability under controlled conditions.

  2. Reactive vinyl group enables covalent bonding with organic polymers during free-radical curing processes.

  3. Three methoxy groups provide strong condensation reactivity with inorganic surfaces (e.g., glass, silica, metals).

  4. Low volatility and favorable handling characteristics compared to chlorosilane alternatives.

  5. Domestically manufactured to consistent quality standards with batch-to-batch reproducibility.

Typical Applications Of Domestic KH171 LT171 Vinyltrimethoxysilane

  1. Adhesion promoter in silicone rubber–glass or silicone rubber–metal composites.

  2. Surface modifier for silica fillers in high-performance RTV and HTV silicone elastomers.

  3. Coupling agent in vinyl ester and unsaturated polyester resin systems for fiber-reinforced composites.

  4. Functional additive in moisture-curable sealants and adhesives to enhance substrate bonding.

Specifications Of Domestic KH171 LT171 Vinyltrimethoxysilane

Chemical TypeVinyltrimethoxysilane
Product FormLiquid
AppearanceColorless to pale yellow clear liquid
Specific Gravity (25°C)0.965–0.975 g/cm³
Refractive Index (25°C)1.392–1.398
Boiling Point155–160°C (at 760 mmHg)
Flash Point (Closed Cup)46°C
Storage Stability≥12 months in sealed container at 2–25°C


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