David J Pollatta

US Patent:

55544304, Sep 10, 1996

Filed:

Dec 23, 1994

Appl. No.:

8/363676

Inventors:

David J. Pollatta - Webster NY
Thomas N. Quinzi - East Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B32B 512
B32B 506
D04H 302

US Classification:

428113

Abstract:

A boron/carbon fiber 1D laminate comprising a boron fiber layer and a carbon fiber layer having a balanced pair of carbon fiber plies embedded in a plastic resin matrix has a coefficient of thermal expansion between. +-. 54. mu. m/m/. degree. C. and a specific modulus greater than 8. 9. times. 10. sup. 6 meter. A 2D boron/carbon fiber quasi-isotropic laminate having two sets of quasi-isotropic boron fiber plies, two sets of quasi-isotropic carbon fiber plies, the laminate has a Coefficient of Thermal Expansion between. +-. 54. mu. m/m/. degree. C. in two orthogonal directions, a specific modulus greater than 5. 2. times. 10. sup. 6 meter in two orthogonal directions. The laminates are useful for optical mounting structures.

US Patent:

55937527, Jan 14, 1997

Filed:

Nov 28, 1995

Appl. No.:

8/565182

Inventors:

David J. Pollatta - Webster NY
Thomas N. Quinzi - East Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B32B 516

US Classification:

428114

Abstract:

A boron/carbon fiber laminate comprising a boron fiber layer and a carbon fiber layer having a balanced pair of carbon fiber plies embedded in a plastic resin matrix has a Coefficient of Thermal Expansion between. +-. 54. mu. m/m/. degree. C. , a Coefficient of Moisture Expansion between. +-. 20. 0. mu. m/m/%. DELTA. M, and a specific modulus greater than 1. 64. times. 10. sup. 6 meter. The laminate is useful for optical mounting structures.