| 摘要 |
A flexible, e.g. polyurethane, open cell foam sheet is impregnated with a controlled amount of a liquid polymerizable resin system which cures at ambient temperature, and the resin impregnated sheet is immediately chilled at a suitably reduced temperature, e.g. 40 DEG F. or below, to arrest polymerization or hardening. The resulting resin impregnated sheet is stored at such reduced temperature. When needed for adhesive bonding the chilled resin impregnated sheet, cut to the desired pattern or size, is applied between the surfaces of objects to be bonded, e.g. fiber reinforced polyurethane insulation blocks and plywood strips, or such insulation blocks and the steel hull of a liquid natural gas (LNG) container or marine tanker. With or without the application of bonding pressure, as the temperature of the resin impregnated sheet rises to ambient temperature, curing of the resin in the sheet to the solid state takes place, and bonding of the adjacent surfaces of the objects occurs, substantially without extrusion of any excess resin from the sheet, the open cell foam sheet containing the cured resin forming an integral part of the resulting bondline. |
