Adhesives and sealant materials

Epoxy and polyurethane adhesives are not appreciably affected by 10-9 torr for 7 days at room temperature. However polyurethane adhesives can exhibit significant outgassing when aged under 10-9 torr at 107°C.75 At room temperature a high vacuum does not generally cause significant weight loss in commercial adhesive and sealant materials. 

Van Twisk, J., and Aker, S. C., Storing Adhesive and Sealant Materials, in Adhesives and Sealants. 

For each industry, we will explain — in detail — how, why, when, and where adhesives and sealants are, or may be, used for various assemblies all the techniques, types of adhesives and sealants, materials, and applications that are available or possible in a given industry, together with case studies, examples, cost calculations, design tips, and suggestions for future applications. 

Abstract In this chapter, classification of adhesive and sealant materials is presented. For this purpose, various categories are considered depending on the polymer base (i.e., natural or synthetic), functionality in the polymer backbone (i.e., thermoplastic or thermoset), physical forms (i.e., one or multiple components, films), chemical families (i.e., epoxy, silicon), functional types (i.e., structural, hot melt, pressure sensitive, water-base, ultraviolet/ electron beam cured, conductive, etc.), and methods of application. The classification covers high-temperature adhesives, sealants, conductive adhesives, nanocomposite adhesives, primers, solvent-activated adhesives, water-activated adhesives, and hybrid adhesives. 

As discussed in earlier reviews, such as those by De Lollis (1980), Shields (1985) and Brinson (1987a, b, c), adhesive and sealant materials are classified using categories based on the nature of the following ... 

For adhesive and sealant materials, their durability in service, in relation to these basic requirements, is connected with the characteristics of the products, and the mandates issued by the European Commission for the development of harmonized technical specifications... 

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