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High Modulus, High Temperature Glass Fibers For Reinforced Plastics

Report Number: WADD TR 60-24 Supplement 1
Author(s): Machlan, G. R.; Stalego, C. J.; Tiede, R. L.; Isham, A. B.; Caramante, D. E.
Corporate Author: Owens-Corning Fiberglas Corp Granville OH
Laboratory: Materials Central
Date of Publication: 1960-12
Pages: 230
Contract: AF 33(616)-5802
Project: 7340
Task: 73400
AD Number: AD0490475

Abstract:
An exploratory research investigation to determine the feasibility of producing glass fibers which retain useful properties at temperatures up to 2500 F resulted in the development of fibers which had a strength of 210,000 psi at 1800 F, an elastic modulus of 12.8 x 10 to the 6th power psi at room temperature, and a specific gravity of 2.53. A program to improve the strength properties of laminates made from the high modulus glass developed in Supplement I of the contract resulted in laminates which had wet strengths at least equivalent to similar ''E'' glass laminates and an increase of 34 per cent in wet flexural modulus. A program to develop unidirectional, non-woven, preimpregnated reinforcement which would produce laminates having very high strength yielded laminates which had a dry flexural strength of 265,000 psi and a dry flexural modulus of 7.81 x 10 to the 6th power psi.

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