Semi-finished product and thermoplastic composite material having liquid crystal polymers and process for the production of the material
AssigneeAerospatiale
InventorRene L. Coffy
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Abstract
The semi-finished product according to the invention consists exclusively of liquid crystal thermoplastic polymers (LCP), whereof at least one first liquid crystal thermoplastic polymer (LCP) is in the form of fibers (18) and has a given melting point, and whereof at least one second liquid crystal thermoplastic polymer (LCP) (16) has a melting point below that of the first LCP. This semi-finished product is in particular a fabric. By simply heating under pressure at a temperature equal to the melting point of the second LCP, followed by cooling, a composite material with improved mechanical and physicochemical performance characteristics are obtained.
Claims12
Thermoplastic composite semi-finished product consisting exclusively of liquid crystal thermoplastic polymers (LCP), whereof at least one first liquid crystal thermoplastic polymer (LCP) is in the form of fibres and has a given melting point and where of at least one second liquid crystal thermoplastic polymer (LCP) has a melting point below that of the first liquid crystal polymer.
Thermoplastic composite material having reinforcing fibres embedded in a matrix produced exclusively from liquid crystal polymers and in which the reinforcing fibres are constituted by at least one first liquid crystal thermoplastic polymer having a given melting point and in which the matrix is constituted by at least one second liquid crystal thermoplastic polymer having a melting point below that of the first liquid crystal polymer.
Dependencies are inferred from the claim text.