Abstract
There are various adhesives developed in pursuit of an optimization of mechanical properties of adhesive joints. Especially, the structural adhesives have been applied to many fields, large scale vessels for corrosion type, automobile, archtectural structure, etc. Then, new development of an adhesive was accelerated with each passing day. In the design of an adhesive joint, stress uniformity in the adhesive layer is important in practical application. Therefore, we must consider the elastic properties of an adhesive because the stress distribution in adhesive layer of an adhesive joint is depended on elastic modulus of the adhesive. Consequently, the problem of elastisity of adhesive should be investigated in detail to make the uniform stress distribution in adhesive joint layer. By the way, the structural adhesive curing at shorter time suits for practical usage. For this fact, a newly designed adhesive has been developed. In this paper, the adhesives of elasitic type and short time curing type have been shown as new ones in structural application. These adhesives were converted into soft ones, and new adhesion technique of such adhesives was developed during structural use.
