Process for making fiber reinforced polyurethane laminates
Abstract
Abstract COMPOSITE MATERIAL COMPRISING AN OUTER POLYURETHANEBASED ELASTOMER LAYER, AN INNER FIBROUS LAYER, AN INNER POLYURETHANE-BASED ELASTOMER LAYER AND A FIBOUS LAYER AS THE OTHER OUTER LAYER. THE COMPOSITE MATERIAL MAY BE PREPARED BY APPLYING TO A NON-ADHERENT SUPPORT, A LIQUID POLYCONDENSATE CONTAINING FREE NCO GROUPS AND A LIQUID HARDENER OR A HARDENER IN SOLUTION IN AN INERT SOLVENT; THEN APPLYING A LAYER OF FIBRES ON THE LAYER THUS OBTAINED BEFORE TOTAL HARDENING; THEN SIMULTANEOUSLY APPLYING ON THE LAYER OF FIBRES OF LIQUID POLYCONDENSATE CONTAINING FREE NCO GROUPS AND A LIQUID HARDENER OR A HARDENER IN SOLUTION IN AN INERT ORGANIC SOLVENT; THEN APPLYING A SECOND LAYER OF FIBERS ON THE LAYER THUS OBTAINED BEFORE COMPLETE HARDENING AND FINAL SEPARATING THE MATERIAL SO PRODUCED FROM THE NON-ADHERENT SUPPORT.
Inventors
- 👤 P Arbaud
Bibliographic Details
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