Silquest A-178 silane is a coupling agent for glass fiber and particulate filled reinforced composites. It is a 100% active methacrylamido functional silane that may be used to promote adhesion between a wide range of resins and substrates and reinforcements. It may also be useful as a monomer in the synthesis of organic polymers. It functions as a moisture-activated crosslinking agent.

This silane is soluble in methanol, ethanol, acetone, toluene, and water. It reacts with water and alcoholic solvents. In water, a concentration of one weight percent is stable for greater than 72 hours.

Silquest A-178 is recommended for evaluation in instances where inorganic surfaces such as glass fibers, particulate fillers, or metals are combined with organic polymers, for example, unsaturated polyester, vinyl ester, acrylic, polybutylene, and polyolefins. This silane is often applied to the inorganic surface from an aqueous solution.

Silquest A-178 silane is a mixture of ethoxy and methoxy esters.

Features & Benefits

• 100% Active Ingredient
  • Contains no flammable or combustible solvent
  • Offers low VOC emissions
• Methacrylamido Group
  • Reactive with a large number of resins systems, such as unsaturated polyester, vinyl ester, acrylic, polybutylene, and polyolefins
  • Compatible with many typical glass fiber size and coating ingredients, such as film formers, anti-static agents, surfactants, lubricants, and other coupling agents
  • Improves hydrothermal aging properties of glass fiber and particulate filler-reinforced composites
  • Provides glass fiber protection
  • Improves stand integrity for better fiber processing and composite fabrication

Properties