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Composite materials based on the thermoplastic matrix reinforced with fibers and fabrics

Композиционные материалы с термопластичными матрицами, армированные волокнами и тканями
In recent years there has been a tendency to use thermoplastic polymers such as polyethylene, polytetrafluoroethylene and polypropylene as a matrix for the fiber reinforced composites. The main disadvantages which limit their application are relatively low mechanical properties and creep under load. Various kinds of fillers can be used to increase their mechanical properties. In our opinion, the most promising in this respect may be carbon, basalt, or polyethylene fibers with high values of tensile strength and elastic modulus. A serious problem in the development of composite materials based on UHMWPE is its very high molecular weight (up to 10*106 g/mol), due to the conventional processing techniques such as extrusion or injection molding are not possible. This polymer does not become a flowable state even at the temperatures much higher its melting temperature, therefore mixing the fillers and the matrix in the molten state is impossible. Another serious problem is the chemical inertness of the components of composites, and as a consequence poor fiber-matrix interaction, which have a negative effect on the mechanical properties of the composites. The goals of this research are the development of methods and approaches that ensure uniform distribution of reinforcing fillers in the composite materials, and the formation of good interfacial interaction in fiber reinforced composites.


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Doctor of Science, professor
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