| 摘要 |
<p>A process for the preparation of a composite material containing a thermoplastic polymer and cellulosic fibres, having high tensile and flexural properties, reduced thermal expansion and high thermal stability (heat-deflection temperature), compared to the pure plastic is described. Cellulosic fibres are coated with electron beam-curable monomers, oligomers or mixtures thereof. The coated fibres are mixed with a powdered thermoplastic matrix material. The mixture is electron beam treated to a specified dose, to chemically cure the fibre coating by producing free radicals in the fibre, in the coating and in the matrix polymer. Free radical reactions form chemical bonds between the fibres and the synthetic matrix. Mechanical bonding, the result of a molecular entanglement, further improves the adhesion between the wood fibres and the thermoplastic polymer.</p> |
