Promoters, adhesion organosilanes

Fig. 31. 8 Increase in the delamination velocity as a function of mechanical stress in the blister test experiment measured with the HR-SKP comparison of an unmodified epoxy adhesive (as in Fig. 31.2, about 70 p,m thick) and of the adhesive modified with an organosilane adhesion promoter, performed with 0.5 M NaCi as electrolyte.

Materials/characterislics Organosilanes. adhesion promoters, functionalized organic polymers, organotitanates. zirconates... 

IGC data recorded for hydrated alumina treated with an organosilane adhesion promoter when five probes are injected simultaneously to illustrate the effect of probe characteristics on retention time (Reproduced from Chehimi et al. 2001 with permission of The Royal Society of Chemistry)... 

In the case of the GPS organosilane adhesion promoter applied to aluminum (and used as a substrate in the data of Fig. 10.13), ToF-SIMS has established the formation of a covalent bond between the GPS molecule and the oxidized aluminum substrate (Abel et al. 2000). The chemistry leading to the formation of the diagnostic fragment (Al-O-Si at m/z = 70.9534 u) and the high resolution spectrum at a nominal mass of 71 u is shown in Fig. 10.15. The formation of the specific bond is associated with good durability of the resultant bond, and examination of the fracture surfaces of failed joints shows that the presence of the ion in the ToF-SIMS spectrum correlates well with good durability. 

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