Layered inorganic nanomaterials
the basic characteristics of layered inorganic nanomaterials is a layered structure, the polymer can be inserted between layers of the material through a certain way, so as to achieve nanoscale dispersion, enhanced toughening effects of the material, and cut off the gas, heat resistance, such as performance, typical layered inorganic nanometer materials have the following several kinds: natural layered inorganic substances, synthetic, the layered metal oxide layer synthesis, this kind of oxide has a special function, layered transition metal disulfide, layered metal salts.
packaging materials in the polymer nanoparticles dispersion is the main technology of the preparation of polymer nanocomposites. Intercalation complex legal is insert monomers or polymers with layered structure between the silicate layers, and then destroy the silicate layer structure, peeling thickness to 1 nm, the basic unit of length is 100 nm, and make it evenly dispersed in polymer matrix, realizes the high polymer and layered silicate composite layer on the nanoscale. Intercalating composite can be divided into intercalation polymerization and polymer intercalating two technical routes.
in situ legal can also be called dispersion in situ or in situ polymer, is dissolved the nanomaterial to the monomer solution, the nano materials under the effect of stirring evenly dispersed in solution, polymer monomer for polymerization generated after implement evenly dispersed in a polymer nanomaterials. Blending method from the process consists of mixed solution of the melt blending. From different blending components and can be divided into two kinds of polymer/inorganic particles system. This method process is relatively simple, from the point of view of technology, melt blending ratio solution blending is more simple, more suitable for the polymer modification. But the dispersion and dispersion and surface treatment of nanomaterials is very important.
nano TiO2 has enhanced toughening effect and the function of whitening and weather resistance. Nano ceramic powder has the thermal insulation, far infrared spectral emission performance, for special occasions with thermal insulation requirements. Department of nano silver antibacterial material, permanent antibacterial function, is the ideal antibacterial antibacterial engineering plastic injection tooling manufacturing. Preparation methods of polymer nanocomposites are different from general method of polymer composite materials production. The key control points of nanomaterials in dispersion degree according to me.
intercalated polymerization monomer into the polymerization silicate layers, formed by the macromolecular will silicate layer, and evenly dispersed between the macromolecular chain. Polymer layer is through appropriate intercalated agent, the compound first insert the silicate layers, and polymer blends react with polymer intercalating agent, finally make insert silicate layer between polymer chain, forming nanocomposites.
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