Extruded thermoplastic foams and uses in applications requiring strength and lightweight
AssigneeHoneywell International Inc.
InventorsHayim Abrevaya, Keith Lehuta, Susie Martins
Life of this patent
Estimating the term…
Abstract
Disclosed are extruded foam comprising an extruded thermoplastic, closed-cell foam having at least a first surface and comprising: (i) thermoplastic polymer cell walls formed by an extrusion step, with the walls being comprised of at least about 0.5% by weight of ethylene furanoate moieties and optionally one or more co-monomer moieties; (ii) blowing agent contained in at least a portion of said closed cells; and a material different than said thermoplastic, closed-cell foam attached to and/or integral with at least a portion of said first foam surface.
Claims20
A wind turbine blade comprising:
- a. a blade shell;
- and
- b. an extruded foam in the blade shell, said extruded foam having a foam density of from about 70 kg/m3 to about 250 kg/m3 and comprising a thermoplastic foam comprising:
- (1) thermoplastic polymer cells comprising cell walls forming closed cells, wherein said thermoplastic polymer comprises ethylene furanoate moieties and optionally ethylene terephthalate moieties;
- and
- (2) 1234ze(E) contained in the closed cells.
A faced foam comprising:
- a. an extruded thermoplastic foam core having a foam density of from about 70 kg/m3 to about 250 kg/m3and comprising polymer cells comprising cell walls forming closed cells, wherein said thermoplastic polymer comprises ethylene furanoate moieties and 1234ze(E) contained in the closed cells;
- and
- b. a facing attached to and/or integral with at least a portion of said foam core.
A foam article comprising:
- a. an extruded thermoplastic, closed-cell foam having at least a first foam surface;
- and
- b. a material different than said thermoplastic, closed-cell foam attached to and/or integral with at least a portion of said first foam surface, wherein:
- (i) said thermoplastic polymer cells comprise cell walls comprising at least about 0.5% by weight of ethylene furanoate moieties;
- (ii) said closed cells contain 1234ze(E);
- and
- (iii) said extruded foam has a foam density of from about 70 kg/m3 to about 250 kg/m3.
Dependencies are inferred from the claim text.