Лако-красочные материалы — производство

This chapter summarizes the principles of some of the many spectroscopic techniques that are available for the analysis or study of aspects of adhesive bonding science and technol­ogy. As indicated in Table 1, there are dozens of techniques and new acronyms appear almost on a daily basis. The number of instrumental spectroscopies available today to the scientist is bewildering, especially the many techniques for surface characterization. Therefore, it is likely that some techniques have been missed, although it was attempted to cover them all, at least in Table 1. The choice of techniques from that listing that were actually discussed in this chapter had to be limited and was in some cases somewhat arbitrary and subjective. However, some emphasis was put on techniques that can be used in the study of the science of adhesive bonding technology. Techniques for routine analysis, e. g., NMR or the various mass spectrometries, were not discussed in depth.

It is clear that tremendous developments have been made in recent years with certain techniques. A large number of spectroscopic techniques are now available that can be adapted, with little or no adaptation, to the study of various aspects of adhesive bonding.

Important questions, such as adhesion mechanisms, failure mechanisms, locus of failure, and so forth, can now be addressed successfully by several experimental methods. The application of such spectroscopies has evidently led to a better understanding of the performance of materials used in adhesive bonding and such knowledge has triggered the development of new or improved materials.

In the choice of a particular spectroscopic technique, one should be well aware that no single technique, no matter how sophisticated, can solve all problems or answer all questions. Therefore, some insight in to the principles and capabilities of the many tech­niques that one could choose is required for anyone who wishes to tackle problems in materials science. Providing this insight, and referring the interested reader to the appro­priate literature for further studies, was the main objective of this chapter.