A chemical substance which is capable of reacting with both of the reinforcement and resin matrix of composite material is known as coupling agents. Coupling agents also bond inorganic fillers or fibers or to organic resins which helps to form or promote a stronger bond at the interface or at the surface. Most commonly used coupling agents are titanates, zirconates and organic acid chromium chloride. A polymeric coupling agent attaches an inorganic filler to the polymer matrix as the purpose of adding fillers is very much to lower the cost of the polymer so that it become tough and also flame retardant which would not burn when it is ignited. These coupling agents fillers in most of the cases are not compatible with the polymers which can also repel them. Coupling agents have to reduce so that the repellency of the polymers and fillers are maintained respectively.
Few of coupling agents fillers are calcium carbonate, glass fibers, talc or flame retards. Very common types of coupling agents are silane coupling agents which are used for establishing a bond which is considered to be stable among all surfaces which generally fail to bond due to the fact of being incompatible. The mechanical based properties which are associated with the product that are implement for the use of the silane coupling agents which have been found to exhibit the higher level of durability of the products which do not implement this technique. Silane coupling agents have been found to thus provide a sound and protective barrier to those products which are used for the dispersion process.
As silane coupling agents emits amounts of pigmentation processes for certain surfaces the product experiences a higher degree of wet ability with which it is termed as an actual process of dispersion among pigments. It affects the bound group of pigments which causes them to spread among other areas. Today there are various types of silane coupling agents which are available in the market today.