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Redux (adhesive) : ウィキペディア英語版
Redux (adhesive)
Redux is the generic name of a family of phenolformaldehyde/polyvinyl–formal adhesives developed by Aero Research Limited (ARL) at Duxford, UK, in the 1940s, subsequently produced by Ciba (ARL). The brand name is now also used for a range of epoxy and bismaleimide adhesives manufactured by Hexcel. The name is a contraction of ''REsearch at DUXford''.
==History==
Devised at ARL by Dr. Norman de Bruyne and George Newell in 1941 for use in the aircraft industry, the adhesive is used for the bonding of metal-to-metal and metal-to-wood structures. The adhesive system comprises a liquid phenolic resin and a PVF (PolyVinylFormal) thermoplastic powder.

The first formulation available was Redux Liquid E/Formvar, comprising a phenolic liquid (Redux Liquid E) and a PVF powder (Formvar), and after its initial non-aviation related application of bonding clutch plates on Churchill and Cromwell tanks, it was used by de Havilland from 1943 to the early 1960s, on, among other aircraft, the Hornet, the Comet and the derived Nimrod, and the Dove, Heron and Trident. It was also used by Vickers on the Viking and by Chance Vought on the F7U Cutlass.
Typically, Redux would be used to affix stiffening stringers and doublers to wing and fuselage panels, the resulting panel being both stronger and lighter than a riveted structure. In the case of the Hornet it was used to join the aluminium lower-wing skin to the wooden upper wing structure, and in the fabrication of the aluminium/wood main wing spar, both forms of composite construction made possible by the advent of Redux.
After initially supplying de Havilland only, ARL subsequently produced a refined form of ''Redux Liquid E/Formvar'' using a new liquid component known as Redux Liquid K6, and a finer-grade (smaller particle-size) PVF powder, and this was later made generally available to the wider aircraft industry as Redux Liquid 775/Powder 775, so-named because it was sold for aircraft use to specification DTD 775
*
. Available for general non-aerospace use it was called Redux Liquid K6/Powder C.
''Redux Liquid 775/Powder 775'' was joined in 1954 by the subsequent Redux Film 775 system, used from 1962 by de Havilland (later Hawker Siddeley and subsequently British Aerospace) on the DH.125 and DH.146. Other users included Bristol (on the Britannia), SAAB (on the Lansen & Draken), Fokker (on the F.27), Sud Aviation (on the Alouette II/III), Breguet and Fairchild, the film-form having the advantage of greater gap-filling ability with no loss of strength over ''Redux Liquid 775/Powder 775'', allowing for wider tolerances in component-fit, as well as easier handling and use and controlled ratios of the liquid/powder components.
Other Redux adhesives available included "Redux 64", a solution of the phenolic liquid and PVF powder, used world-wide for bonding linings to brake shoes, pads and clutches.
The Redux range was subsequently expanded to include the current range of adhesives, both in single and two part paste systems and film forms, for both aerospace and industrial uses.

*
DTD = ''Directorate of Technical Development''

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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