20 июня, 2015 
Malyar Part 1 — Adhesives and adhesion
The first part of this book addresses the important factors involved in the formation of a successful adhesive joint, namely the:
(1) selection of a suitable adhesive
(2) adequate preparation of the adherend surface
(3) appropriate design of the joint
(4) controlled fabrication of the joint itself
(5) protection of the joint from unacceptably hostile conditions in service, including the provision of fire protection for primary structural bonding.
The development of methods for post-bonding quality assurance might also be added to these factors, since a barrier to the general introduction of structural adhesives into construction is the lack of a reliable method of assessing the quality of bonded joints.
The broad overview of materials and applications, both current and potential, which follows in this chapter leads into a classification and characterisation of adhesive materials in Chapter 2. The various types of (particularly engineering) adhesives are discussed briefly, and it is shown how physical and mechanical characteristics are linkable to chemical compositions. It is apparent that adhesives are in general complex and sophisticated blends of many components, and this background serves to familiarise the reader with an introduction to the chemistry and formulation of adhesives.
In Chapter 3, theoretical aspects of adhesion are reviewed with the object of discussing why adhesives stick, before addressing practical aspects of the surface pretreatment of a number of common construction materials. It is shown that merely establishing interfacial contact between adhesive and adherend is often not sufficient in itself to ensure satisfactory performance. Particular, and sometimes elaborate, pretreatment procedures are found to be necessary for maximising joint durability, and this subject is further elaborated in the following chapter.
Chapter 4 discusses the design and mechanical performance of adhesive joints with particular reference to load-bearing assemblies. The problem of joint design is approached from a consideration of the strains and stresses induced in joints as predicted from stress analysis techniques. Design and testing are natural partners, and in this chapter an extensive review of test procedures is made from which a valuable insight into the adhesive layer behaviour in larger — scale joints may be deduced. Finally the factors influencing joint behaviour and service-life are given.
Chapter 5 looks at the process of joint fabrication, discussing the procedures necessary to ensure a reliable outcome and the methods for testing and quality control of the bonding operation. Emphasis is again given to optimising conditions for maximising potential performance, and some consideration is given to methods of protecting the joint from unacceptably hostile conditions in service.
Опубликовано в рубрике 