Examples of Silane Coupling Agent Effects in Filled Polymers

9 Examples of Silane Coupling Agent Effects in Filled Polymers 

A brief account of the use of silanes in various polymer systems follows, more details will be found in the appropriate chapters later in the book. 

Silane coupling agents are widely used to improve the performance of mineral fillers in elastomer systems. The silanes most commonly used are the various sulfur-based ones and the vinyl and amino functional. The sulfides are generally used both pre-coated and in situ . The fillers most often used in conjunction with silane coupling agents are precipitated silicas and clays. The primary objective of the treatment is to improve polymer to filler bonding, although other benefits such as lower viscosity, better dispersion and reduced water adsorption are also observed. 

The main benefits to be observed from the improved adhesion are higher modulus, higher tear strength, better fatigue resistance and higher abrasion resistance. More complete details can be found in the chapter on elastomers. 

It should also be recorded here that Schwaber and Rodriguez used dilatometry to provide direct evidence for improved adhesion resulting from the use of silane coupling agents in silica and clay filled elastomers [76]. 

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