Silane coupling agent

I. Basic Product Characteristics

• Chemical Nature: Organic-inorganic hybrid molecules containing hydrolyzable alkoxy groups and organic functional groups, capable of building molecular bridges between polymer materials and inorganic fillers/substrates, significantly enhancing interfacial bonding strength.
• Physical Form: Mostly colorless to light yellow transparent liquids (e.g., KH-550, A-151), soluble in water and organic solvents.
• Core Functions:

  • Enhance mechanical strength of composite materials (e.g., improving compressive strength of artificial quartz stone);

  • Improve coating adhesion, water resistance, and corrosion resistance;

  • Regulate material dispersibility (e.g., reducing viscosity of thermal conductive materials).

II. Main Application Areas

1. Building Materials and Composite Materials

• Artificial Quartz Stone: Treat surfaces of silica sand/crushed glass to enhance bonding strength with unsaturated resins and optimize slab durability.
• Sealants and Coatings: Act as cross-linking agents to improve adhesion of epoxy and acrylic coatings to glass/metal; enhance pigment dispersion uniformity.

2. Polymer Material Modification

• Plastics and Rubber:

  • Cross-linked polyethylene cables/pipes (e.g., A-151), improving heat resistance, crack resistance, and electrical properties;
  • Treat fillers such as quartz powder to enhance density and moisture resistance of polybutadiene resins.

• Fiber Reinforcement: Used for surface treatment of glass fibers to improve wet-state mechanical strength of polyester/epoxy composites.

3. Functional Treatment

• Metal Protection: Replace phosphating and passivation processes to form environmentally friendly anti-corrosion coatings.
• Hydrophobic Treatment: Alkyl silanes used for waterproofing building stones, inhibiting water penetration.
• Electronics and Daily Chemicals:
  • Improve stability of magnetic materials;
  • Dispersing agents for cosmetic fillers;
  • Enhance biocompatibility of polymers in the pharmaceutical field.

III. Safety and Trends

• Operational Precautions: Some products are flammable; avoid skin contact; control exhaust emissions in environmentally friendly processes.
• Technical Direction: Develop low-toxicity, weather-resistant products, and optimize reaction temperature and time control.