Silane Coupling Agents: Techno Brief

Coupling agents are adhesion promoters that are used to provide a stable bond by reducing the interfacial tension between the fibrous or particulate inorganic component and the organic matrix polymer in reinforced and filled plastics. This Coupling Agents guide is designed to help you understand more about the use of silanes as coupling agents in reinforced plastics, focusing on the benefits and main applications.

Silica Treatment

Silica treatment with Silanes Silane coupling agents are often used to treat silica (both fumed and precipitated) treatment with great effectiveness in filled polymer systems.

The silane treatment can improve processing, performance, and durability of silica-modified product by:

  • Improving adhesion between the mineral and the polymer
  • Improving wet-out of the mineral by the polymer
  • Improving dispersion of the mineral in the polymer
  • Improving electrical properties
  • Increasing mechanical properties
  • Reducing viscosity of the filler/polymer mix

Silanes used as coupling agents in silica treatment are useful for many applications, such as green tire, shoe soles.

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