| abstract |
A natural material composite material is provided. Disclosed is a natural material composite material that is protected against harmful effects of microorganisms, comprising at least one natural material, at least one thermoplastic resin and an antimicrobial agent. The composite material further includes at least one light stabilizer and at least one compound selected from the group consisting of oxides, hydroxides or silicates of Ca, Mg, Al and Zn, It is advantageously protected against outdoor exposure and coloring. The light stabilizer is selected from the group consisting of UV absorbers and sterically hindered amines. The metal oxide is, for example, CaO. Natural materials are, for example, wood flour, flax, hemp, jute, kenaf or rice husk. The thermoplastic resin is, for example, polyethylene or polypropylene. The antibacterial agent and possible auxiliary additives are blended by melt processing such as extrusion, co-kneading, pultrusion and injection molding. The antibacterial agent is, for example, thiabendazole. |