By David Dunn
This specified record covers either technical and marketplace details on adhesives and sealants in a single quantity. It presents an exceptional research of the state of the art within the adhesives and sealants undefined. it truly is basically written and may be of curiosity to specialists, designers and end-users. The document covers international industry info and makes a speciality of Western Europe and North the USA, with more information concerning the rising markets within the some distance East and Latin the US. It presents a good, transparent assessment of the total of the adhesives and sealants from creation and production the way to marketplace purposes, new know-how, key businesses and power for progress.
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Additional info for Adhesives and Sealants - Technology, Applications and Markets
These include syringes, cartridges and automated meter-mix systems. Heat is often required to maximise the properties of two-component epoxies. Catalytic curing of two-component epoxies can be achieved using cationic initiators such as BF3 adducts. Almost instantaneous cationic polymerisation of epoxies can be achieved with catalyst systems involving the reaction between organic halides and silver salts . One-component epoxy adhesives can be formulated using dicyandiamide (DiCy) as the hardener.
These are very high cost systems but prices are expected to fall with increased competition as basic patents expire. It is not the intent of this report to cover UV curing equipment, save to say that a wide range of systems are available with various wavelengths and intensities with spot curing and flood systems being available. Articles on equipment and dispensers have appeared in recent issue of Adhesive and Sealants Industry Magazine [10, 11]. 10. 10 Examples of UV adhesive and sealant applications Products /markets Applications Wire tacking Circuit boards Pin attachments Electronic components Gasketing Motors Syringe assembly Medical devices Syringe needle assembly Optical parts Surface mounting Consumer glass repair Gasketing Automotive mirrors Glass bonding Auto windshield repair Potting Display panels Encapsulation Magnets Bonding medical tubing Optical fibres Tamper proofing Video recorders Die attach Disk drives Solder masks Loudspeakers Conformal coating repair Dental Radiation curing technology is confined to a limited portion of the adhesives industry.
RHMUs must be dispensed in special applicators with blanketing of the systems with dry nitrogen, and the cost of these systems can be prohibitive to small users. Just as with thermoplastic hot melts, open time and green strength are important characteristics of RHMUs. Green strength is perhaps more important here compared to regular hot melts in that this is the ultimate strength of the assembly until the moisture-induced crosslinking reaction takes place (can take up to 72 hours for completion, depending on atmospheric humidity and temperature).