Aminosilane coupling agent

Chiang, C.H. and Koenig, J.L. (1981). Fourier transform infrared spectroscopic study of the absorption of multiple aminosilane coupling agents on glass surfaces. J. Colloid. Interface Sci. 83, 361-370. 

Reactive treatment is the most difficult in polyolefins, although occasionally successful attempts have been reported as shown in Fig. 15 for a PP/mica composite [89] the results presented in the figure were obtained by the application of an aminosilane coupling agent. In PP composites the most often used cou-... 

Oligomerization of an aminosilane coupling agent and its effects on the adhesion of thin polyimide films to silica... 

The following advantages come to mind. The increased interfacial bond strength often observed when an aminosilane coupling agent is used may be explained by the in situ formation of an interpenetrating network. This would... 

Abstract—This work studies the effects of self-oligomerization of the aminosilane coupling agent 3-aminopropyltriethoxysilane—also called y-aminopropyltriethoxysilane. 3-APS, y-APS, APS or AUOO (Union Carbide)—on the adhesion of thin polyimide films to a native-oxide silica surface under no stress, i.e. T(0) conditions, and after standard 85°C/8I%T H (temperature and humidity) stress. Techniques have been developed using both silicon and hydrogen NMR to control and monitor the degree of oligomerization in aqueous solutions at low concentrations (0.1 vol %). 

The aminosilane coupling agent 3-aminopropyltriethoxysilane or y-amino-propyltriethoxy silane—also abbreviated as 3-APS, y-APS, APS or A1100 (Union Carbide)—is widely used to promote adhesion between polyimide thin films and mineral surfaces such as native-oxide silica, alumina and various glass ceramics [1, 2]. The structure of APS and the hydrolysis reaction sire shown in Fig. 1. Typically, dilute aqueous solutions of 0.1 vol% or approximately 0.080 wt % are employed to prime the mineral surface. The mechanism for the interaction of the bifunctional aminosilane with the mineral surface is the subject of much speculation, although it is conjectured by Linde and Gleason [3] that the amine end initially forms an electrostatic bond with surface hydroxyls. Subsequently, possibly as the result of elevated temperatures, the silanol end of the molecule proceeds to form a siloxane-like bond with the surface and the amine... 

Fig. 13. Influence of concentration of aminosilane coupling agent on dynamic viscoelastic properties for GFL/PP composites (a) storage modulus versus angular frequency, (b) dynamic viscosity versus angular frequency...

S Naviroj, JL Koenig, H Ishida. Molecular structure of an aminosilane coupling agent as influenced by carbon dioxide in air, pH, and drying conditions. J Macromo-lec Sci Physics B 22 291-304, 1983. 

C-H Chiang, JL Koenig. Comparison of primary and secondary aminosilane coupling agents in anhydride-cured epoxy fiberglass composites. Polymer Composites 2 192-198, 1981. 

H Ishida, S Naviroj, SK Tripathy, JJ Fitzgerald, JL Koenig. The structure of an aminosilane coupling agent in aqueous solutions and partially cured solids. J Polymer Sci Polymer Physics Edition 20 701-718, 1982. 

FIG. 19 Reactive coupling of mica to PP by an aminosilane coupling agent [116]. 

Fine calcium carbonates, coated with aminosilane coupling agents, have been developed. Their diameter is about 20 nm. The material is promising as fillers to reinforce structural adhesives or elastomer adhesives (Tutui 2006). 

Aminosilane coupling agents such as A-1100 are also used with wood fiber vinyl composites. This subject is discussed in Chapter 17. 

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