Composite tooling

Details Composite tooling Composite tooling

1987-12-03

1989-08-22

Nielsen, Earl

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

428272, 428273, 523445, 523466, 523468, 528 94, C08G 5968, C08L 6300

Patent

active

048595284

ABSTRACT:
A composite tooling part having excellent dimensional stability, which may be prepared at low cost employs a one-component epoxy resin system having a catalyst which is the reaction product of an aromatic dicyanate and an imidazole. Reinforcing materials are incorporated in the matrix, and the resulting prepreg is allowed to cure at low temperature, down to about room temperature, until the free standing state is obtained. Thereafter, if elevated temperature performance is necessary, the product can be post-cured at elevated temperatures, without the need for a high temperature master.

REFERENCES:
patent: 3962184 (1976-06-01), Notomi et al.
patent: 4335228 (1982-06-01), Beitchman et al.
patent: 4558115 (1985-12-01), Hefner
patent: 4559398 (1985-12-01), Tesch et al.
patent: 4587311 (1986-05-01), Schmid et al.
patent: 4742148 (1988-05-01), Lee et al.

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