The advantage of the general use of adhesive bonding method
Time：2012-10-08 15:14:00 Hits：1486
Adhesives available to the metal, glass, wood, paper, fibers, rubber, plastic, and other various materials are bonded together, resulting in a function or the performance its partial and overall. Adhesive bonding method is increasingly replacing mechanical coupling method, which is mainly due to the adhesive bonding method has the following advantages.
(1) such as films, fibers and pellets substance material using other methods is not good or not easy to join, very easily bonded together with an adhesive. Typical examples of such uses: laminated polyethylene and other plastic film, aluminum foil, cotton fabric and paper glued; glass wool insulator with wool fiberglass composites; grinding wheel, sandpaper, emery cloth and brake pads; rayon particles, nylon, polyester and glass fiber reinforced tires; corrugated board, paper bags, labels, tape, stamps and envelopes; safety glass; non-woven fabric and stuffing made of cotton, wool or fine velvet flocking cloth or carpet; board or particle board, furniture, decorative plates or Polaroid board.
(2) Compared with the traditional weaving weaving method, metal welding method and riveting, bolts or nailed mechanical coupling method, adhesive bonding method may be faster, more economical, this often is an important reason for the bonding method .
(3) capable of different materials (such as: aluminum - paper, iron - copper, etc.) together. Moreover, when bonding two metals, adhesives can separate them to prevent corrosion. When the two kinds of the coefficient of thermal expansion of the adherend is very different, the flexibility of the adhesive can reduce the gravitational force due to temperature changes. The performance of a laminate of different materials than that of either one of the sticky material.
(4) the stress is distributed over a larger area, can reduce the fatigue failure of the assembly, and may be lighter and stronger than the mechanical coupling. Such as aircraft wing or tail and fuselage bonding.
(5) the strength of the anisotropic material - mass ratio, and dimensional stability through the cross-bonding is increased. E.g., itself non-homogeneity and water sensitivity of the timber can be converted into the warpage resistance, water-resistant plywood; random fiber fleece adhesive nonwoven fabrics can be made isotropic.
(6) In capacitors, printed circuit, and filling in the resistor, the glue line is to provide an electrical insulating effect.
(7) The glue line from the moisture barrier function, for example, in the packaging laminate, the glue line is greatly increased moisture resistance.
In the United States, 80% of the demand of adhesive almost all from the packaging and construction industries, and packaging adhesive is still growing.
