Patent ID: 7579068
Filing Date: 2009-08-25
Classification: B32B,C08G,Y10T

Abstract:
1. A reinforced structural member comprising a structural member having a cavity containing a reinforcing foam, wherein the reinforcing foam is a structural thermoset polymer foam (a) having a density of from 80 to 650 kg/m 3 , (b) having a storage modulus such that the ratio of the storage modulus at 0° C., expressed in MPa, divided by the density of the thermoset polymer foam, expressed in kg/m 3 , is at least 0.4, and (c) having a storage modulus such that the ratio of the storage modulus of the thermoset polymer foam at 100° C. divided by the storage modulus of the thermoset polymer foam at 0° C. is at least 0.5, such storage moduli being measured according to ASTM D 4065-01 on a 12 mm wide×3.5 mm thick×17.5 mm single cantilever sample, under conditions of 1 Hz and a heating rate of 2° C./min, and said density being a core density measured according to ASTM D 3574 at 22±3° C.