Aluminum wood laminate

Because of the widespread use of aluminum/wood laminates in architectural applications, literally thousands of durability-type water-resistance tests have been conducted. Such testing was routinely conducted for more than 25 years at the Alcoa Laboratories to establish the data which could give confidence to manufacturers of such bonded structures. While some of this... 

Boron has been included as a neutron absorber in various materials in addition to concrete. For example, borated graphite, a mixture of elemental boron and graphite, has been used in fast-reactor shields. Boral, consisting of boron carbide (B4C) and aluminum, and epoxy resins and resin-impregnated wood laminates incorporating boron have been used for local shielding purposes. Boron has also been added to steel for shield structures to reduce secondary gamma-ray production. In special situations, where a shield has consisted of a heavy metal and water, it has been beneficial to add a soluble boron compound to the water. 

The Mosquito was a laminated wood monocoque design that although unusual, was not new. More uniquely, the monocoque shell was fabricated by gluing plywood skins to balsa wood core. This construction foreshadowed the popular honeycomb core/facesheet aluminum and composite designs of later years. Fuselage halves of the Mosquito were formed in closed wooden female tools (tools... 

The reactive hotmelt adhesives retain a high level of flexibility and dynamic load-bearing capacities even after crossUnking and are used to join plastics to one another as well as to wood (furniture industry), glass (construction industry), aluminum (sandwich elements), and painted surfaces. Typical applications include window casement sheathing, foil laminations, clip fasteners, bookbinding, textile... 

During World War II, synthetic rubber and resin-modified phenolics were used to bond aluminum sheets (available only in in. thickness at that time) into billets from which airplane propellers were carved, thus replacing laminated wood, which often shattered on impact with a bullet. Similar adhesives were used to bond rubber to metal in a variety of vibration-damping applications. The most successful widely known product of the new technology was the automotive bonded brake lining first introduced in 1947, and now regarded as a symbol of quality and integrity [12, p. 490]. 

Epoxy Room temp Excellent with most substrates Excellent Excellent Used for high-performance lamination and for bonding to wood and aluminum... 

Facade panels made from HPL (High-Pressure Laminate), natural stone, stoneware or aluminium are used. The frame is generally made of aluminum but can also be made of planed wood. Use of such a variety of materials calls for an adhesive which is compatible with a wide spectrum of substrates and capable of absorbing, within certain limits, the different thermal and hygroscopic movements between panel and frame. 

Nitrile rubber/phenolic adhesives are also quite useful in adhering rubber to various met-als, " e.g., in the manufacture of rubber covered metal rollers. Huber reported that a nitrile/phenolic adhesive composition provided excellent bonding of rubber to a magnesium roll (Table 20). Other metal bonding applications with nitrile rubber/phenolic adhesives include laminating aluminum foil to paper and then to wood, bonding abrasives to metal, and bonding polyamide to metal. 

Some of the composites have also been in the consumer market for some time. In addition to plywood, homebuilders and furniture makers are making extensive use of particle board (woodchips in a polymer matrix) because of its superior dimensional stability. Often it is laminated to a wood veneer for use as furniture. Decorative vinyl-clad steel or aluminum panels are used in office buildings. Generally, the more advanced composites such fiber-reinforced metals and ceramics have been too expensive for... 

Decorative panels are made by laminating vinyl or wood veneer to structural panels which can be steel, aluminum, pl)nvood, or particle board. Foam cores between the structural panels offer stiffness, sound deadening, and thermal insulation. Metal-polymer laminates are used as decorative panels in buildings. A viscoelastic core can be added between the metal sheets for sound damping. 

NBR adhesives have excellent shelf stability and high temperature properties. They are used in aircraft, automobile, paper, and electronics applications. Blended with phenolic resins, they have been used to laminate aluminum and stainless steel, fabricate airplane structures, bond abrasives to metal, brake linings to brake shoes, laminate leather, attach soles in shoe manufacturing and bond cardboard, polymeric films, masonite, wood and metal to each other and themselves. Nitrile rubber-phenohc resin blends are poor adhesives for non polar elastomers such as natural rubber, butyl rubber, polyethylene unless their surfaces have been activated to improve adhesion. 

Higher Tg acrylic polymers are used for bonding of ceramic tiles, lamination of aluminum foil or plastic films to paper and wood, and in the treatment of textiles. The lower Tg (tacky) versions of the polymer, where the acrylic component is secondary to the elastomeric-based adhesive component, are used in pressure-sensitive adhesive applications. 

For example, polychloroprene/neoprene, with the addition of casein, provides adhesives for high-speed laminating of aluminum foil to paper. They are typically used in the automotive and construction industries for plastics-to- wood bonding (Formica), and also used as contact cements in the shoe industry. These adhesives typically crystallize from solution. 

Although aircraft structures comprise thousands of components produced from a myriad of basic materials, the most common substrates for structural adhesive bonding are wood, aluminum, titanium, stainless steel, and the composite materials such as bonded sandwich structures, fiber-reinforced plastic (FRP) laminates, and fiber—metal laminates (FML) in which the metal is usually aluminum. 

The supporting medium may be glass or nylon cloth. Neoprene-phenolic adhesive may be used to bond a variety of substrates such as aluminum, magnesium, stainless steel, metal honeycombs and facings, plastic laminates, glass, and ceramics. Wood-to-metal bonds are often primed with neoprene-phenolic adhesives. 

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