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Term Acrylic: polymerized
from acrylonitrile [syn: acrylic fiber]
2: a glassy thermoplastic; can be cast
and molded or used in coatings and
adhesives
Acrylic-Adhesive are created by polymerizing acrylic or methyacrylic acids with a compatible catalyst. Acrylic-adhesives are available in both emulsion and solvent-based versions and are generally 2 part (adhesive base or resin and an activator) no mix adhesives. The end product is an acrylic-adhesive which is extremely resistant to the environment. Cure times will depend on ambient room temperatures. Structural acrylic adhesives are termed "reactive" cure systems. The adhesive base reacts upon contact with the Activator layer to initiate the curing mechanism. The key word is layer - Activator is applied as a thin film or layer to one or both surfaces to be bonded. Adhesive base resin is applied to one surface and parts mated to start the cure reaction. Unlike epoxies acrylics require no direct mixing. Acrylics offer unique performance capabilities. High peel and high impact strengths are combined to deliver tough, durable, shock resistant bonds. Acrylics products withstand weathering effects well. Acrylic adhesives do not require extensive surface preparation and bond well to dirty and oily substrates. Acrylic-Adhesives bond to a variety of materials and has fast cure times. Dissipator structural adhesive-acrylics provide specific adhesion for bonding electrical heat sink components with high thermal conductivity. Heat trapped and not dissipated by the components can lead to premature component failure and costly repair and replacement. Thermal conductivity is assured and electrical shorting is prevented by the insulation characteristics of the adhesives. The acrylic-adhesives replace mechanical devices and silicone greases that can trap contaminants. Keywords: Acrylic-adhesive, acylate, structural acrylic, acrylic resin, dissipator structural acrylics Still can't find it? Please go to Search |
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