Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1992-10-23
1996-12-24
Maki, Steven D.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156180, 264137, B29C 7052
Patent
active
055870341
ABSTRACT:
The present invention relates to a pultrusion process for preparing fiber reinforced furan resin composites by drawing a plurality of continuous filaments through an impregnating bath of liquid furan to wet-out the filaments with the resin and a squeeze orifice for removal of excess resin and air, and continuously pulling the resin-impregnated filament through a pultrusion die to heat and cure the resin. The liquid furan resin contains a furfuryl alcohol prepolymer and a minor portion of an acid catalyst, and is maintained at a temperature of 15.degree.-35.degree. C. and has a viscosity of 500-3000 cps during the impregnating step. A postcuring treatment may be optionally employed to the pultruded fiber reinforced furan resin composites for improving their mechanical properties, which includes heating the pultruded composites at a temperature of 100.degree.-220.degree. C. for a period of 1-18 hours. Adding 1-15 wt % of mineral fillers may also improve the mechanical properties of the pultruded composites.
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Maki Steven D.
National Science Council
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