Automobile bumpers, adhesives

Plasma treatments using various gases can introduce different functional groups to wood surfaces. They may also be used to improve the adhesive properties of plastic coatings. For example, plasma treatments are used industrially as a method of coating automobile bumpers. However, there are some problems in applying plasma treatments to wood. First, the equipment required for plasma treatments is expensive. Second, it is difficult to treat porous woods with plasma under reduced pressures. The latter problem has led to the investigation of normal pressure plasma treatments of wood. 

Use Sealants and caulking agents adhesives films and linings shoe uppers and heels encapsulation of electronic parts binders for rocket propellants abrasive wheels and other mechanical items automobile bumpers, fenders, and other components. Foams... 

The major use of Heveaplus MG is in adhesives. It gives good bond strength for natural rubber to PVC and therefore, it is particularly useful in shoe manufacturing. It is used as a compatibilizer in plastic-rubber blends. It is also used in applications such as automobile bumpers due to its self-reinforcing nature. 

Using these fundamental reactions of plasma, many polymer properties such as optical reflection, adhesion, friction coefficient, surface energy (wettability and water repellancy), permeability, and biocompatibility of conventional polymers can be controlled by the appropriate application of a plasma treatment. A typical industrial and large-scale application of this technique is the surface treatment of automobile bumpers. The advantage of this technique is the fact that plasma treatment usually... 

The major applications for polyurethane catalysts are in flexible and rigid foam, which account for over 80% of the catalyst consumption. Other applications are in microcellular reaction injection-molded (RIM) urethanes for automobile bumpers and a variety of noncellular end uses such as solid elastomers, coatings, and adhesives. 

Bumpers - Automobile bumpers are now made from a range of polymers ineluding polycarbonate, polyester thermoplastic elastomers, and reaction injection molded methanes. These are being bonded to the automobile using a variety of adhesives such as two part acrylics and polymethanes as well as RTV silieones. 

The use of EPDM rubbers for the manufacture of automobile and truck tires has not been successful, mainly because of poor tire cord adhesion and poor compatibility with most other rubbers. However, EPDM rubbers have become widely accepted as a moderately heat-resisting material with good weathering, oxygen, and ozone resistance. They find extensive use in nontire automobile applications, including body and chassis parts, car bumpers, radiator and heater hoses, weatherstrips, seals, and mats. Other applications include wire and cable insulation, appliance parts, hoses, gaskets and seals, and coated fabrics. 

A natural rubber compound that has been approved for use in an elastomeric energy absorbing bumper was selected for study. The test sample was designed to simulate the bumper as it is mounted in an automobile. Adhesives used in this study were selected from several systems that included both commercial and experimental types. 

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