Epoxy Structural Adhesives

A nltrlle-modlfled epoxy structural adhesive (American Cyanamld FM 123-2)... [Pg.236]

Just as their counterparts rejuvenated the aircraft industry decades ago, modem epoxy structural adhesives are providing automobile designers and manufacturers with innovative possibilities that could not have been considered only a short time ago. As a result, structural automotive adhesives will have an average annual growth rate of greater than 7 percent over the next 5 years.15 This growth rate is additive to any growth that will occur in the automotive industry itself. [Pg.12]

Novel, toughened one-component epoxy structural adhesives based on epoxy-terminated polyurethane prepolymer incorporating an oxolidone structure were developed to provide improved toughness, fracture resistance and adhesive properties with good chemical and moisture resistance.21 The hybrid resin cures with a standard latent curing agent/accelerator. [Pg.133]

Wright, C. D., and Muggee, J. M., Epoxy Structural Adhesives, Chapter 3 in Structural Adhesives, S. R. Hartshorn, ed., Plenum Press, New York, 1986. [Pg.183]

Because of their ease of use and overall good adhesive properties, epoxy structural adhesives often find themselves in these types of applications. [Pg.311]

Epoxy adhesives command a large portion of the structural adhesives market. Many people are probably familiar with epoxy structural adhesives, as these are the typical two-part adhesives found in hardware stores and supermarkets. Epoxy adhesives owe their popularity with both the general public and industry to their ease of use, their relative safety, and their compatibility with many adherends (Fig. 14.3). The various chemical reactions involving the epoxy ring provide a fertile field for the development of a wide range of properties.29 Even a half century after the first epoxy patents were issued,30 new patents on epoxy adhesive technology continue to appear every month (Fig. 14.1.)... [Pg.596]

Various aliphatic and aromatic mono-glycidyl ethers are available that can be used as reactive diluents of many formulated epoxy structural adhesives. They are... [Pg.598]

Step-Growth Polymerization. Only a relative few of the dozens of active hydrogen compounds that undergo reactions with the epoxy ring find widespread use in epoxy structural adhesives. The most common are amines, acid anhydrides, phenols, thiols, and carboxylic acids. [Pg.602]

Chain-Growth Polymerizations. Chain-growth polymerizations are very important to many commercially successful epoxy structural adhesives. They can be extremely rapid and contribute to the fast cure times needed for high productivity in many manufacturing operations. [Pg.605]

Epoxy structural adhesives have proven to be versatile and reliable compositions. Their widespread use and acceptance is in part due to the varied chemistry of the epoxy ring and the skill of scientists and adhesive formula-tors in developing high-quality compositions that can produce reliable, reproducible structural joints even when applied by relatively unskilled users. New compositions and chemical reactions continue to be disclosed, and it is certain that the knowledge of epoxy chemistry will continue to grow. Many of the new discoveries will find their way into new epoxy structural adhesives. [Pg.606]

Epoxy structural adhesives are used in an extraordinarily wide range of applications. They are available in essentially all of the forms discussed above, except for primer—liquid combinations or as room temperature curing liquids. The liighest technology7 application for epoxies is in aerospace structural... [Pg.232]

Some of the specific applications of epoxy structural adhesives are roads, bridges, pavements, loading bays etc.. [Pg.69]

Cybond . [Am. Cyanamid] Two-part epoxy structural adhesive industrial metal adhesives. [Pg.94]

Fig. 13.8 The T-peel resistance as a function of the crosshead speed for nitrile rubber/phenolic polyurethane liquid rubber blend toughened epoxy (upper curve) and conventional nitrile rubber-toughened epoxy structural adhesives (lower curve).

The nitrile-epoxy structural adhesive systems have moved from an aircraft orientation to include industrial, automotive and electronics areas. These include a host of film adhesive products (21, 22) and thixotropic pastes (23-26). Representative adhesive models have also been studied from a fracture toughness polnt-of-view permitting comparisons of bulk fracture to that of fracture in the adhesive joint (27, 28). [Pg.8]

The entire process is complete in several minutes for small panels and approximately one hour for upper/lower body shell halves. Released fi om the mold, the halves are joined with epoxy structural adhesive on an overlapping joint along the waistline of the car. The joint is reinforced in certain areas by over bonding with glass fiber cloth. The body, a one-piece molded floor-pan and the chassis are then bolted together, creating structure with almost double the torsional stififiiess of the basic backbone chassis. [Pg.321]

R. S. Drake and A. R. Siebert, "Reactive Butadiene/Acrylonitrile Liquid and Solid Elastomers Formulating Epoxy Structural Adhesives," in Ref. 14. [Pg.56]

In a contribution from B. F. Goodrich, Drake and Siebert extensively review the journal and patent literature since 1975 on reactive butadiene/acrylonitrile liquid and solid elastomers used in formulating epoxy structural adhesives. Areas reviewed include the preparation of elastomer-modified epoxy resins, the characterization of rubber-toughened epoxy resins, fracture mechanics and adhesive formulation and testing. [Pg.542]

Epoxy structural adhesives which employ carboxylic polybutadiene/acrylonitrile solid and liquid (CTBN) elastomers as modifiers have increased in number and proliferated in use since their introduction in the mid- 60 s. Such adhesive systems are now used in aircraft, electronics, automotive and industrial bonding operations. In the mid- 70 s, amine-reactive versions of the liquid polymers (ATBN) were issued, thereby offering another way to introduce rubber modification into a cured epoxy network. References are cited which provide detailed discussions of nitrile rubber, carboxylic nitrile rubber and both carboxyl- and amine-terminated nitrile liquid polymers (1-4). ... [Pg.644]

Durability (63,64) of bonded assemblies continues to receive the prime attention it deserves in the performance regime of structural adhesive testing. And aging studies of selected nitrile-epoxy structural adhesive models are being reported (65,66). [Pg.647]

The last four years have witnessed an intense interest in designed epoxy adhesive systems for the transportation sectors embracing cars, buses, trucks and rail. Environmental durability, peel, vibration resistance and impact are of prime concern in the newer paste adhesive systems for the applications involving metal/metal, metal/plastic and plastic/plastic bonding. An impressive documentation has begun to emerge which addresses these newer areas for designed epoxy structural adhesives (67-70). [Pg.648]

C.E.M. Morris, etal., "Short-Term Aging Effects in a Nitrile-Epoxy Structural Adhesive," J. Macromol. Sci.-Chem, A 17 (2), 227-242, 1982. [Pg.653]

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