Fiber-reinforced thermoplastic composite bonded to wood
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United States of America Patent
Stats
-
Jul 15, 2003
Grant Date -
Feb 7, 2002
app pub date -
Jun 7, 2001
filing date -
Jun 9, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to wood that is reinforced with a fiber-reinforced thermoplastic composite that contains a plurality of substantially parallel continuous fibers impregnated with thermoplastic polymer having the following structural units: ##STR1## where Z is S or O, and Z' is S, O, N-alkyl or NH The invention is useful in a variety of applications including glue-laminated structures, laminated veneer lumber, reinforced I-beams, parallel strand lumber, reinforced particle board, and ladders. The use of a thermoplastic polyurethane, particularly the high Tg thermoplastic polyurethane as the impregnating resin provides a means of recycling and reusing the reinforced lumber, as well as shaping the composite in ways that would be impossible using conventional fiber-reinforced thermoset composites.
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