Properration And Application Of Fiber-Zinc Oxide Compasities

Polyolefin materials have good ductility and resistance to environmental stress cracking.However,its rigidity,aging resistance and antibacterial properties are not very well,which restricts the further application of polyolefin materials.The fiber material has a reinforcing effect and can improve the mechanical properties of the polyolefin material.Nano-ZnO has excellent anti-ultraviolet aging and anti-bacterial properties.At the same time,as a small,rigid particle,ZnO can also exhibit a good toughening and toughening effect on polyolefin materials.Therefore,nano-ZnO,fiber materials,organic composite modified polyolefin materials can improve the mechanical properties of the material,antibacterial properties and anti-ultraviolet aging properties.As a novel method for preparation of hybrid materials,in situ growth method was used to synthesize nano-ZnO on the surface of fiber in this paper,and two hybrid compounds of bacterial cellulose(BC)-ZnO and glass fiber(GF)-ZnO were prepared.BC-ZnO/LLDPE composite films were obtained by blending BC-ZnO hybrid and linear low density polyethylene(LLDPE).GF-ZnO/PP composites were prepared by blending,extrusion and injection molding of GF-ZnO hybrid materials with polypropylene(PP).Measured the mechanical properties,anti-ultraviolet aging properties and antibacterial properties of films and composites,and studied the effects of zinc source,reaction time,and amount of hybrid materials on the properties of BC-ZnO/LLDPE films and GF-ZnO/PP composites by X-ray diffraction(XRD),differential scanning calorimetry(DSC),scanning electron microscopy(SEM)and other analytical means.The BC-ZnO/LLDPE composite films was studied and discussed.The results showed that the antibacterial performance of BC-ZnO/LLDPE composite films against staphylococcus aureus was achieved 90.16%when ZnSO4 was used as the zinc source,the reaction time was 5 hours,and the addition amount was 3%by weight.The tensile properties,anti-ultraviolet properties of films have also been maximized.The research and discussion of GF-ZnO/PP composite films can conclude that GF-ZnO/PP composites are antibacterial to golden grape balls when ZnSO4 is used as the zinc source,the reaction time is 5 hours,and the added amount is 15 parts.The efficiency reaches 90.24%,and the most obvious improvement is in tensile strength,bending strength,impact strength and anti-ultraviolet aging performance.