The organic/inorganic nanocomposite formed by dispersing the inorganic filler in a nanometer size in a general plastic matrix is called nanoplastic. In nanocomposites, nano-plastics have excellent properties such as high strength, heat resistance, high barrier properties, flame retardancy and excellent processability due to the nano-size effect of the dispersed phase, large specific surface area and strong interfacial bonding. A new kind of high-tech new materials.
Application of nanomaterials in plastic modification:
Application of nanomaterials in plastic modification:
(1) Anti-aging properties of reinforced plastics
The anti-aging properties of polymers directly affect its service life and environment, especially for agricultural plastics and plastic building materials, which is an indicator that needs high attention. The ultraviolet light in the sunlight is 200 to 400 nm, and the ultraviolet light in the 280 to 400 nm band can break the molecular chain of the polymer and never age the material. Nano-oxides, such as alumina nanopowder, titanium oxide nanopowder, silicon oxide nanopowder, etc., have good absorption properties for infrared and microwave. By properly mixing nano-SiO2 and TiO2, a large amount of ultraviolet rays can be absorbed, thereby making the material resistant to aging.
(2) Improve the processing properties of plastics
Some high-polymers such as ultra-high molecular weight polyethylene having a viscosity average molecular weight of 150 or more have excellent comprehensive performance, but because of their extremely high viscosity, molding processing is difficult, thereby limiting the promotion. Utilizing the small coefficient of friction between layers of layered silicate sheets, the ultra-high molecular weight polyethylene and the layered silicate are thoroughly mixed to form a nano rare earth/ultra high molecular weight polyethylene composite material, which can effectively reduce ultra high molecular weight poly The entanglement of the ethylene molecular chain reduces the viscosity and provides good lubrication, which greatly improves the processing properties.
(3) Improve the toughness and strength of plastics
The emergence of nanomaterials provides a new method and approach for plastic reinforcement and toughening modification. The small particle size dispersed phase has relatively few surface defects and many unpaired atoms. The ratio of the number of surface atoms to the total number of atoms of a nanoparticle increases sharply as the particle size becomes smaller. The crystal field environment and binding energy of the surface atom are different from those of the internal atom, and have great chemical activity. The atomization of the crystal field and the increase of the active surface atoms greatly increase the surface energy, so that it can be closely combined with the polymer substrate, and the compatibility is better. When subjected to an external force, the ions are not easily detached from the substrate, and the external stress that is received is better transmitted. At the same time, under the interaction of the stress field, more microcracks and plastic deformation will be generated inside the material, which can cause the substrate to yield and consume a large amount of impact energy, thereby achieving the purpose of simultaneously strengthening and toughening. Commonly used nano materials include nano silicon carbide, silicon carbide whiskers, nano alumina, multi-wall carbon nanotubes and the like.
(4) The addition of nanomaterials functionalizes plastics
Metal nanoparticles have heterogeneous nucleation and can induce the formation of certain crystal forms that impart toughness to the material. Filling the polypropylene with low-melting metal nanoparticles shows that it can act as a conductive channel and enhance and toughen in polypropylene, and its low melting point also improves the processing properties of the composite.
Some high-polymers such as ultra-high molecular weight polyethylene having a viscosity average molecular weight of 150 or more have excellent comprehensive performance, but because of their extremely high viscosity, molding processing is difficult, thereby limiting the promotion. Utilizing the small coefficient of friction between layers of layered silicate sheets, the ultra-high molecular weight polyethylene and the layered silicate are thoroughly mixed to form a nano rare earth/ultra high molecular weight polyethylene composite material, which can effectively reduce ultra high molecular weight poly The entanglement of the ethylene molecular chain reduces the viscosity and provides good lubrication, which greatly improves the processing properties.
(3) Improve the toughness and strength of plastics
The emergence of nanomaterials provides a new method and approach for plastic reinforcement and toughening modification. The small particle size dispersed phase has relatively few surface defects and many unpaired atoms. The ratio of the number of surface atoms to the total number of atoms of a nanoparticle increases sharply as the particle size becomes smaller. The crystal field environment and binding energy of the surface atom are different from those of the internal atom, and have great chemical activity. The atomization of the crystal field and the increase of the active surface atoms greatly increase the surface energy, so that it can be closely combined with the polymer substrate, and the compatibility is better. When subjected to an external force, the ions are not easily detached from the substrate, and the external stress that is received is better transmitted. At the same time, under the interaction of the stress field, more microcracks and plastic deformation will be generated inside the material, which can cause the substrate to yield and consume a large amount of impact energy, thereby achieving the purpose of simultaneously strengthening and toughening. Commonly used nano materials include nano silicon carbide, silicon carbide whiskers, nano alumina, multi-wall carbon nanotubes and the like.
(4) The addition of nanomaterials functionalizes plastics
Metal nanoparticles have heterogeneous nucleation and can induce the formation of certain crystal forms that impart toughness to the material. Filling the polypropylene with low-melting metal nanoparticles shows that it can act as a conductive channel and enhance and toughen in polypropylene, and its low melting point also improves the processing properties of the composite.
SAT nano technology material Co., LTD is aimed at spreadint the nano and micron technology and supply quality product for customer in different field. We can supply aluminum oxide powder 50nm, TiO2 nanopowder 50nm and silicon oxide nanopowder 20nm, please feel free to contact us.
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