Coupling agent organosilane

In a fume hood, dissolve the organosilane coupling agent containing chloro-, amino-, or methoxysilane reactive groups in toluene, THF, or a hydrocarbon solvent at a concentration of 5 percent silane. 

Organosilane coupling agents have been widely used to improve the adhesion at the zeolite/polymer interface of the mixed-matrix membranes ]62, 63, 65, 70]. 

The surface modification can be done in water (contrary to organosilane coupling agents)... 

While organosilane coupling agents are known to play an important role in interfacial adhesion in many composite systems, the mechanisms by which they improve product properties are not well understood. Sizes and surface treatments that use silanes are often developed entirely empirically as a consequence. The structure of the coupling agent, variables associated with silane deposition, and concentrations of a plethora of additives are adjusted in large matrix experiments, using end product properties as criteria for improved or diminished performance. 

Keywords Plasma polymer polymer-metal interface organosilane coupling agent corrosion resistance. 

FIGURE 10.1 Organosilane coupling agents react with water in aqueous solutions to form hydrolyzed silanes that react with the surface of inorganic fillers or the adherend. The bound silane polymerizes, building up layers outward, with the organic functionality oriented to the resin matrix.3... 

Organosilane coupling agents consist, in general, of an organic functionality and one or more... 

The principal types of surface modifiers are fatty acids, such as stearic acid, and organosilane coupling agents. Since magnesium hydroxide has... 

An example of organosilane coupling agent is y-glycidoxy-propyltrimethoxy-silane (Z-6040 Silane, manufactured by Dow Corning Corp., and A-187, manufactured by Momentive) [10],... 

Gonzalez L, Cervantes-Uc JM, Olayo R et al (1999) Chemical modification of henequen fibers with an organosilane coupling agent. Compos B 30 321-331... 

The application of organosilane coupling agents has been described by Plueddemann. More recently, the adhesion mechanisms have been reviewed by Jones. ... 

Tensile, flexural, and impact properties of compounds filled with hollow glass spheres are similar to those with solid spheres and research shows that there are significant benefits in properties when organosilane coupling agents are used. 

The probe compounds may be chosen as model acids (for example, carboxylic acids or chloroform) and bases (for example, pyridine or ether), with which to measure the acid-base character of the filler surface. However, the probes may be actual interfacial modifiers used in the composite system under investigation, for example an organosilane coupling agent or fatty acid dispersant. Furthermore other interesting interactions have been studied by the authors and include stabiliser - filler interactions during evaluation of controlled release/displacement effects. 

Free-radical method usually requires a surface activation by a direct attachment of initiator molecules or by the introduction of surface active sites (i.e., vinyl groups in surface graft polymerization of vinyl monomers). In particular, organosilane coupling agents (i.e., chloro- and alkoxysilanes) are commonly employed to introduce active sites onto inorganic oxide surfaces. 

The US Air Force was very interested in using glass fiber reinforced unsaturated polyester resins, but required even better humidity resistance, and so they funded research into better coupling agents. This research was quickly successful and led to silicon-based products that reduced the losses to less than 10% and resulted in the birth of fee organosilane coupling agent family, which still dominates the market more than 40 years from their first introduction. 

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