Composite pipe structure having improved containment and axial strength
AssigneeExxonMobil Research and Engineering Company
InventorsLiza Marie-Andree Monette, Michael Paul Anderson
Life of this patent
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Abstract
Composite laminated fiber reinforced plastic pipe having improved resistance to micro-cracking and delamination is disclosed. The pipe is composed of a plurality of laminated layers forming the pipe wall structure, including an outer axial bearing layer containing reinforcing continuous fibers embedded in a thermoset resin binder and disposed at a substantially fixed angle of 0° up to +/−30° with respect to the longitudinal pipe axis and an inner layer in contact with the inner surface of the outer layer and containing reinforcing continuous fibers embedded in a thermoset resin binder and disposed at a substantially fixed angle of greater than +/−30° with respect to the longitudinal pipe axis.
Claims16
A fiber reinforced plastic pipe comprising an elongated, hollow tubular body, concentric with a longitudinal axis, with a wall structure formed from a plurality of layers, at least two of such layers containing fibers fixed in a resin binder, the fibers being disposed at a substantially fixed angle with respect to the longitudinal axis of the pipe, wherein the layers containing fibers consist essentially of an outer axial load bearing layer and one or two inner hoop load bearing layers, the outer layer containing first fibers ranging in thickness from about 1 to about 7 μm and disposed at a substantially fixed angle ranging from 0° to about +/−30°, and the inner layer or layers disposed radially inward of the outer layer containing second fibers disposed at a substantially fixed angle of greater than +/−30°, and ranging in thickness from about 10 μm to about 24 μm.
Dependencies are inferred from the claim text.