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To use Redux in its liquid/powder form, a thin film of the phenolic liquid is applied to both mating surfaces and then dusted with or dipped in the PVF powder to give an approximate ratio by weight of 1 part liquid to 2 parts powder. The coated joints are then allowed to stand for between 30 minutes
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is 30 minutes at 293 °F (145 °C) under a pressure of 100 psi (690 kPa). This is not critical and variations in curing-time and/or temperature may be used to increase
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of metal-to-metal and metal-to-wood structures. The adhesive system comprises a liquid phenolic resin and a PVF (PolyVinylFormal) thermoplastic powder.
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Project 3 – Environmental
Durability of Adhesive Bonds – Report No. 9 – Forensic Studies of Adhesive Joints – Part 2 Bonded Aircraft Structure
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being approximately 338 °F (170 °C) for one hour, due to the possibility of affecting the alloy's mechanical properties.
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lower-wing skin to the wooden upper wing structure, and in the fabrication of the aluminium/wood main wing
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strength at temperatures above 140 °F (60 °C). Extending the curing cycle gives benefits in
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and 72 hours, then the components are brought together under elevated pressure and temperature. The
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of thickness 0.0625 in (1.59 mm) - mean failing stress = 4,980 psi (34.3 MPa)
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206:-size) PVF powder, and this was later made generally available to the wider aircraft industry as
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of thickness 0.050 in (1.3 mm) - mean failing stress = 4,070 psi (28.1 MPa)
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of thickness 0.063 in (1.6 mm) - mean failing stress = 3,210 psi (22.1 MPa)
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of thickness 0.048 in (1.2 mm) - mean failing stress = 5,600 psi (39 MPa)
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After initially supplying de
Havilland only, ARL subsequently produced a refined form of
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and George Newell in 1941 for use in the aircraft industry, the adhesive is used for the
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strength at some cost in the room-temperature peel strength, the practical limit for
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Lap shear strength at ambient temperature = 4,930 psi (34.0 MPa)
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panels, the resulting panel being both stronger and lighter than a
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a short article on Redux by N. A de Bruyne in a 1953 issue of
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structure. In the case of the Hornet it was used to join the
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Strength of bonds to materials other than aluminium:
191:construction made possible by the advent of Redux.
163:Typically, Redux would be used to affix stiffening
120:to the early 1960s, on, among other aircraft, the
45:. The brand name is now also used for a range of
41:, UK, in the 1940s, subsequently produced by
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49:and bismaleimide adhesives manufactured by
483:Redux film adhesive – 50th anniversary
198:using a new liquid component known as
505:A 1957 Aero Research advert for Redux
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305:Directorate of Technical Development
83:The first formulation available was
374:shear of 0.5 in (13 mm)
364:= 174,000 psi (1.20 GPa)
22:is the generic name of a family of
358:= 486,000 psi (3.35 GPa)
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87:, comprising a phenolic liquid (
459:Usage on the de Havilland Comet
453:by A. Beevers. September 1995.
347:Performance (typical) Redux 775
53:. The name is a contraction of
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202:, and a finer-grade (smaller
325:Redux Liquid 775/Powder 775
298:Redux Liquid 775/Powder 775
222:Redux Liquid 775/Powder 775
208:Redux Liquid 775/Powder 775
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323:and a typical figure for
216:Redux Liquid K6/Powder C
252:. Other users included
236:by de Havilland (later
492:Redux 775 Product Data
196:Redux Liquid E/Formvar
144:. It was also used by
85:Redux Liquid E/Formvar
72:Devised at ARL by Dr.
539:Aerospace engineering
378:at room temperature:
35:Aero Research Limited
91:) and a PVF powder (
464:The de Bruyne Medal
356:Young's Modulus (E)
24:phenol–formaldehyde
16:Family of adhesives
470:Bonding with Redux
401:Commercially-pure
232:system, used from
228:by the subsequent
214:use it was called
534:Materials science
510:"Joint Economics"
472:.(reprinted from
242:British Aerospace
240:and subsequently
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341:aluminium alloys
187:, both forms of
167:and doublers to
128:and the derived
74:Norman de Bruyne
28:polyvinyl–formal
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390:Stainless steel
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286:Alouette II/III
238:Hawker Siddeley
200:Redux Liquid K6
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476:– Sept 1946)
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409:= HK31A-H24
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158:F7U Cutlass
523:Categories
442:References
384:mild steel
376:lap joints
132:, and the
101:plates on
58:search at
43:Ciba (ARL)
529:Adhesives
436:Tego film
294:Fairchild
258:Britannia
244:) on the
212:aerospace
189:composite
181:aluminium
165:stringers
103:Churchill
37:(ARL) at
31:adhesives
431:Aerolite
426:Araldite
420:See also
403:titanium
303:* DTD =
284:(on the
276:(on the
264:(on the
256:(on the
204:particle
173:fuselage
107:Cromwell
490:Hexcel
481:Hexcel
382:Bright
372:Tensile
337:fatigue
290:Breguet
254:Bristol
177:riveted
156:on the
152:and by
148:on the
146:Vickers
142:Trident
94:Formvar
78:bonding
68:History
39:Duxford
514:Flight
317:curing
274:Fokker
270:Draken
268:&
266:Lansen
250:DH.146
246:DH.125
150:Viking
130:Nimrod
124:, the
122:Hornet
99:clutch
51:Hexcel
20:Redux
333:creep
329:shear
310:Usage
138:Heron
126:Comet
116:from
110:tanks
47:epoxy
331:and
292:and
278:F.27
262:SAAB
248:and
234:1962
226:1954
185:spar
171:and
169:wing
140:and
134:Dove
118:1943
105:and
62:ford
414:ICI
288:),
280:),
272:),
260:),
60:DUX
525::
412:=
218:.
160:.
136:,
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56:RE
26:/
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