LOW DENSITY CORING MATERIAL

摘要

A low density coring material is described. In one embodiment, the low density coring material consists essentially of: about 40 to about 80 wt % resin, the resin consisting essentially of vinyl ester resin or a combination of vinyl ester resin and polyester resin; 0 to about 50 wt % monomer; 0 to about 5 wt % dispersion aid; 0 to about 5 wt % accelerator, or inhibitor, or both; about 3 to about 10 wt % microspheres; 0 to about 20 wt % fiber; 0 to about 20 wt % filler; and about 1 to about 5 wt % catalyst; wherein a density of the cured coring material is less than about 5.0 lbs/gal. Composites made using the low density coring material and methods of making composites are also described.