Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1996-03-20
1997-11-11
Stemmer, Daniel
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156286, 1563069, 1563073, B32B 312, B32B 3120
Patent
active
056859406
ABSTRACT:
We reduce core crush and ply wrinkling in composite honeycomb sandwich structure by preventing slipping of tiedown plies relative to the mandrel and to one another during autoclave curing. We produce superior panels with lighter weights, improved mechanical properties, and more predictable structural performance. The method involves applying a film adhesive to the tiedown plies in the margin of the part outside the net trim line. During heating of the autoclave and prior to the application of high pressure to the composite structure, the film adhesive cures to form a strong bond between the plys and to the mandrel. When pressure is applied, the tiedown plys are locked together and to the mandrel to prevent slippage between any layers in the panel.
REFERENCES:
patent: 2227212 (1940-12-01), Beck
patent: 2745779 (1956-05-01), Ritter et al.
patent: 2839442 (1958-06-01), Whitaker
patent: 3655818 (1972-04-01), McKown
patent: 3857217 (1974-12-01), Reps
patent: 4162341 (1979-07-01), Norton
patent: 4344955 (1982-08-01), Hammer
patent: 4353947 (1982-10-01), Northcutt
patent: 4622091 (1986-11-01), Letterman
patent: 4765942 (1988-08-01), Christensen et al.
patent: 4879152 (1989-11-01), Green
patent: 4973508 (1990-11-01), Bretz
patent: 5061418 (1991-10-01), Ware
patent: 5089328 (1992-02-01), Doerer et al.
patent: 5135799 (1992-08-01), Gross et al.
patent: 5186999 (1993-02-01), Brambach
patent: 5234757 (1993-08-01), Wong
patent: 5284702 (1994-02-01), Umemoto et al.
patent: 5338594 (1994-08-01), Wang et al.
patent: 5445861 (1995-08-01), Newton et al.
patent: 5604010 (1997-02-01), Hartz
Alteneder, et al., "Processing and Characterization Studies of Honeycomb Composite Structures," from Proceedings, 38th International SAMPE Symposium and Exhibition, May 10-13, 1993, Anaheim, California. PCL Internal No. 200-01/93-AW.
Kirk-Othmer, Encyclopedia of Chemical Technology, Fourth Edition, vol. 7, pp. 1, 18, and 27-28, 1993.
3M Material Safety Data Sheet, 3M PR 500 Molding Resin, Apr. 26, 1992, Document 11-2704-2, pp. 526-529.
"Chemical Handling Requirements", Paper No. A-1330-CHR-0538, Jul. 1, 1992, 1 page.
"Adhesive For Composite Bonding (350 F Cure)," Boeing Material Specification, BMS 8-245K, Orig. Issue 6-Jun.-78, Revised 29-Sep.-1994, pp. 1-17.
Boeing Material Specification, BMS 8-245K, Qualified Products List, Orig. Issue 29-Sep.-1994 QPL Rev: (ORG)29-Sep.-1994, pp. 1-2.
Dexter Aerospace, Materials Division, "Material Safety Data Sheet," SYNSPAND X9899 Printed Jun. 24, 1994, pp. 1-5.
Hartz Dale E.
Hopkins William B.
Hammar John C.
Stemmer Daniel
The Boeing Company
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