Automotive adhesive

Solvent-borne CR adhesives allow almost any two substrates to stick together. The adhesives are extensively used in bonding high-pressure plastic laminates, automotive adhesives, adhesives for construction and shoe adhesives. 

Automotive adhesives. CR adhesives are used to bond recreational vehicle sidewalls, for vinyl trim bonding in panels, and to bond in place truck and trailer roofs. 

Autocatalytic formulations, 236 Autoclave cycle, 167 Automotive adhesives, 203 Azobenzene unit, 493... 

Adhesives and Sealants. Dominated by copolymers, adhesives and sealants remain somewhat of a specialty market. These polymers usually contain high copolymer content and low viscosity, and often require blending with oilier compounds prior to final application. Their uses are numerous, e.g., as seals for bottled drinks, as tie layers between incompatible polymers, or as automotive adhesives... 

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. 

SPRINGBORN MATERIALS SCIENCE CORPORATION One Springbom Center, Enfield CT 06082, (203) 749-8371. Automotive Adhesives, Sealants and Sound Deadeners. 

III. SOME CONSIDERATIONS REGARDING TRENDS IN AUTOMOTIVE ADHESIVE BONDING... 

Uses Tackifier, plasticizer, extender, binder in PVC sealers, automotive adhesives/sealers, rubber, plastics, pressure sensitives, hot melts, asphalt coatings, sound deadeners, sealant tapes, caulks impact modifier for plastics... 

But often solvents must be used in adhesives in order to lower their viscosity so that product can be applied without the use of extensive force and so that the adhesive can flow into small openings in the substrate surface to promote mechanical adhesion by anchoring. The easiest formulating technique is to add solvent. This is simple and there is no need to develop new polymeric material. This is particularly true of polyurethane based adhesives which require either a special blending techniques or manufacture of the polymer with low viscosity polyols to reduce its viscosity. However, formulation of polyurethanes without solvents is technically possible as shown in patents for an automotive adhesive and a general purpose adhesive." In these areas additional research will bring dividends but the current effort lags behind the needs. 

Sulfonamide plasticizers were successfully applied in the production of non-fogging automotive adhesives based on polyurethane and ethylene viiwl acetate copolymer. " ... 

Polyterpene resins are transparent, light yellow, odorless, nontoxic, brittle, solid thermoplastic polymers (softening point 80-125 °C) with a relatively low Mw in the range of 1.200-1.300. They are used as tackifiers in hot-melt adhesives for packaging, wood, furniture, and assembly adhesives, in bookbinding, hygiene, nonwoven fabrics, pressure sensitive tapes and labels, industrial and automotive adhesives, and aerospace... 

These various techniques will be explained in the relevant chapters, for instance chemical treatments of metals are explained in a specific chapter titled Surface Preparation of Metals Before Bonding , in Volume 1, and also in the chapters Bonding of Metals and Automotive Adhesives and Sealants . Preparation of plastics before bonding are explained in the chapter Bonding of Plastics and so on. 

Further discussion on robotic applications of adhesives and sealants are done in a separate chapter Robotic Application , and also in the chapters Adhesives for Electronics and Automotive Adhesives and Sealants later in the Handbook. 

Heat-Resistant Adhesives (Chapter 4), studies high-performance adhesives which display high heat resistance and are used in aerospace, aircraft construction, and we believe these adhesives will be used soon in other industries such as automotive, adhesives for mechanics, abrasives and industrial equipment. 

A preaccelerated, non-thixotropic, medium reactive orthophthalic resin suitable for automotive adhesive application. 

Automotive adhesive applications such as adhering rear view mirrors ... 

Automotive adhesives must meet a number of requirements which are more or less independent of joint performance. They must be usable under conditions which include ... 

The years ahead hold considerable promise for automotive adhesives. Currently available products will probably experience a gradual increase in acceptance, particularly in the areas of body structural, hot melt and pressure sensitive holding adhesives. While it is risky to predict the future, it seems reasonable to anticipate additional product development in the following directions ... 

Hiirter, H.-U. (2003). DuPont performance coatings GmbH Co KG. Automotive industry agenda The best of both worlds in automotive adhesives, http //www. automotivetechnology.net/editorials/Dupont.htm [accessed July, 2003]. 

The diagram of an impact peel test in Fig. 46.13 shows the difference of a crash-suitable adhesive in contrast with a very good structural automotive adhesive. 

The Webster definition of adhesion is simply the molecular attraction exerted between the snrfaces of bodies in contact (7). In the more technical world, it is understood that there are many complex components to adhesion in a system, both chemical and physical. Further, the wide variety of complex combinations limits the merit of general predictive mles of thumb. Instead, perhaps, it is useful to simply let a specific situation define an appropriate adhesion test, and thus the practically adherent system. A sufficiently adherent interface is one in which the appropriate applied load or sttess did not exceed the total interfacial adhesive forces. Stresses in coated systems can be either compressive or tensile when experienced normal to the surface, shearing when in a parallel orientation, or some combination of these. Much can be learned from automotive adhesion requirements, because so many durable coating applications in so many situations are found in this industry. Table 7 summarizes some of the tests used to measure adhesion. The following sections offer summaries of important aspects of adhesion in practical coating systems. 

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