Silane coupling agents types

Principle Silane Coupling Agent Types and their Use... 

A considerable range of silane coupling agent types are available commercially, or have been reported in the literature. A vast literature detailing their characteristics and performance also exists. A number of excellent reviews of these subjects are available [61, 68] and hence only the silane types most commonly met will be covered here together with limited examples of the effects they can produce. 

Silane-coupling agent type Flexural strength, MPa ... 

The composition of an epoxide moulding material will greatly depend on the specific application, and this has been discussed at length. ". The resin may be of the epoxide novolac type and there will also be present hardeners, fillers (such as silica), a silane coupling agent, pigment, flame retardant and a wax release agent. 

Other aspects of interfacial science and chemistry are examined by Owen and Wool. The former chapter deals with a widely used chemistry to join disparate surfaces, that of silane coupling agents. The latter chapter describes the phenomenon of diffusion at interfaces, which, when it occurs, can yield strong and durable adhesive bonds. Brown s chapter describes the micromechanics at the interface when certain types of diffusive adhesive bonds are broken. The section on surfaces ends with Dillingham s discussion of what can be done to prime surfaces for adhesive bonding. 

Silane coupling agents are normally hydrolyzed to silanols before adsorption onto a surface. There are several factors which influence the hydrolysis, stability, and adsorption behavior of the silanes, including pH, type of silane used, con centration, and water content [1]. Knowledge of the stability of the silane solution is also important and may be used as a guideline in many applications. Adsorption of silane coupling agents on solid surfaces is affected by the type of surface and methods of application as well. 

We investigated the use of the molding resin powder (<150 m) as a filler for construction materials composed of bisphenol A type epoxy resin and amine type hardener, and compared the material properties with those produced with a silica powder filler (<150 fi m). Furthermore, the effect of surface treatment of the molding resin powder on these properties was examined by using epoxy or amino silane coupling agents, which were added at lwt% to the molding resin powder and heated at 100°C for 1 hr. 

This chapter has reviewed both the types and the properties of elastomers, compounding with a range of filler or reinforcement systems such as carbon black, and enhancement of tiller performance by novel use of compounding ingredients such as silane coupling agents. Other issues such as antioxidant systems and vulcanization systems were also discussed. The role of the modern materials scientist in the tire and rubber industry is to use materials to improve current products and develop new products. Four key parameters govern this development process ... 

---