Pipes and tubular conduits – Distinct layers – Bonded to each other
Patent
1996-05-06
1998-06-02
Brinson, Patrick F.
Pipes and tubular conduits
Distinct layers
Bonded to each other
138129, 138177, 138DIG1, 138DIG7, 428 362, 428 367, F16L 914
Patent
active
057586942
ABSTRACT:
Fire resistant pipes and pipe fittings include a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof. A jacket is disposed around the structural pipe wall and comprises alternating release layers and fiber-reinforced resin layers. The release layer is formed from a material that is incompatible with the resin of the structural pipe wall and fiber-reinforced resin layers, and is energy absorbing to improve impact resistance and reduce thermal stress. The jacket is formed having a sufficient number of alternating layers, having sufficient layer thicknesses, to protect the structural pipe wall from heat induced failure produced by exposing the outermost pipe wall to a 1,000.degree. C. flame for at least five minutes in a dry condition.
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Fortune Mark H.
Friedrich Ralph S.
Kane John F.
Ameron International Corporation
Brinson Patrick F.
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