Layered construction of composite interceptor motor cases, etc.

Details Layered construction of composite interceptor motor cases, etc. Layered construction of composite interceptor motor cases, etc.

1984-02-06

1987-02-03

Terapane, John F.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

102287, 102347, 602001, B65H 8100, C06B 4512

Patent

active

H00002194

ABSTRACT:
Improved method of manufacturing composite rocket motor cases and laminated tructures is disclosed which includes a layered procedure wherein a high percentage of a highly flexibilized, low-modulus epoxy blend of a resin composition is employed in the matrix of the innermost layer section with a subsequent, gradual addition of a toughened (or hard) high-modulus resin to the filament impregnating bath during the filament winding process to achieve a higher-modulus resin composition in the intervening layers with the highest modulus resin composition being in the outermost layer section to achieve a gradation in mechanical properties to mechanical behavior.
The resin composition employed to impregnate a fiber material as the fiber material is passed through a filament impregnating bath is comprised of a four component composition wherein a first component is selected from diglycidyl ether of bisphenol A and a thermoplastic phenol-formaldehyde resin in parts by weight from about 25 to about 95, a second component is epoxidized dimer of oleic acid in parts by weight from about 75 to about 5, a third component is a reactive plasticizer of butanediol diglycidyl ether in parts by weight of about 25, and a fourth component is an amine crosslinking agent or curative in parts by weight of about 20. The fourth component consists of a mixture of 65 weight percent 4,4'-diaminodiphenylmethane, 10 weight percent of triamines, and 25 weight percent of polyamines.

REFERENCES:
patent: 3602067 (1971-08-01), Wetherbee, Jr.

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