The Research Of The Inorganic Nano-particles/Polymer Composite

The strong interaction between the additive and the plastics matrix could be obtained because of the small size of the nanomaterial with large surface area. It can combine the properties of the inorganic nanoparticles, such as rigidity and thermal stability, with the properties of the plastics such as toughness and easy processability to produce composite with excellent properties. Also, this can add some new functional properties to the plastics. Inorganic nanoparticles/plastic composite is put forward and in full flourish now.The preparation, structure and mechanical properties of TiO2 nanoparticles, TiO2 nanoparticles/HIPS composite, T1O2 nanoparticles/PP composite, Mg nanoparticles/PP composite, CaCO3 nanoparticles/PP composite and CaCO3 nanoparticles/PVC composite are studied. Some new functional properties such as antibacterial character, decomposing bacterial endotoxin, antiaging and a strong absorption to UV light are adding to the TiO2 nanoparticles/ HIPS composite and the TiO2 nanoparticles/PP composite. Also, the preparation and the structure of bundle-like structure of TiO2 nanotubes are researched.The X-ray diffraction analysis shows that TiO2 nanoparticles with anantase structure could be prepared by the reaction of titanium tetrabutoxide with distilled water and calcination at 500 for 1 h.The nano-TiO2 is treated by couple agent and mixed with HIPS in the proportion of 1:4 to make nano-TiO2 base matrix particles by co-rotating twin screw extruder and then the nano-TiO2 base matrix are mixed with HIPS matrix in the injection machine to make composite samples. When the content of TiO2 nanoparticles in the TiO2 nanoparticles/HIPS composite is 1wt.%, the best general mechanical properties can be obtained. Also in this TiO2 nanoparticles content in the composite, the distribution of the TiO2 nanoparticles in HIPS matrix is even characterized by scanning electron microscope, transmission electron microscope and energy dispersive spectroscopy.The antibacterial efficiency of TiO2 nanoparticles, TiO2 nanoparticles /HIPS composite andTiO2 nanoparticles/PP is obvious and more than 80 percent. The TiO2/PS composite could effectively decompose the bacteria endotoxin and more than 90% of the bacteria endotoxin is decomposed. The mechanical properties shows the aging of the composites have not been accelerated by anatase TiO2 nanoparticles and the better mechanical properties are achieved than that of ordinary HIPS after aging process of 150h. The HIPS/nano-TiO2 composites performs a stronger absorption to UV light than ordinary HIPS.Significant improvement of the mechanical properties of PP could be obtained by adding Mg nanoparticles treated by coupling agent. The Mg nanoparticles/PP composite exhibit tough fracture characteristics compare to PP which shows the brittle fracture at impact. The mechanical properties of PP and PVC could be improved by filling needle like CaCO3 nanoparticles.Bundle-like structure of anatase TiO2 nanotubes has been synthesized via the reaction of anatase titania nanoparticles and NaOH aqueous solution at higher treatment temperatures after calcined at 500 for 1 h. The tubular structures of titania with diameters of 5-15 nm and length of hundreds or micros are confirmed by XRD, TEM and SEM.