47 results about "Two-dimensional polymer" patented technology

The invention discloses an NO2 gas sensor based on a covalent triazinyl two-dimensional polymer as well as a preparation method and application of the NO2 gas sensor. The sensor comprises a gas sensitive material and a ceramic interdigital electrode, the gas sensitive material is coated on the surface of the ceramic interdigital electrode to form a sensing film, and the thickness of the sensing film is 6-10nm; the gas sensitive material includes a single layer of or 2 to 4 layers of triazinyl two-dimensional polymer nanosheets, and the thickness of the single layer is 1-2.5 nm. The sensor prepared by the invention has the advantages of high NO2 gas response value, stability and restorability, and can work at room temperature.

The invention discloses a renewable high-barrier polyester packaging material and a preparation method thereof, belonging to the technical field of polymer processing and modification. The method of the present invention first carries out compatibilization modification on polyester A and polymer B, solves the technical problem of poor barrier properties caused by the compatibility of the two components, and cooperates with the control of a specific biaxial stretching process to make the original polymer B in the dispersed phase The formation of a huge two-dimensional sheet structure greatly increases the diffusion path of small gas molecules in the film, so that the gas permeability coefficient can be reduced by 1 to 2 orders of magnitude, and the two-dimensional filler and the in-situ formed two-dimensional polymer B Bridging between them forms a barrier network, and a reproducible high-barrier packaging material with a special microstructure of macroscopic single-layer, microscopic multi-layer and multi-component can be obtained, and after molding, it can also be melt-processed by the method of the present invention to obtain high Barrier packaging material, easy to recycle, has essential difference and significant progress from traditional multi-layer composite film.

The invention discloses a two-dimensional covalent carbon skeleton polymer film, a preparation method and application thereof. The invention mainly uses the diacetylenyl organic compound as a monomer, heats and illuminates on a metal base to obtain a full-carbon polymer film. The metal substrate is etched, the polymer film is cleaned, transferred to the substrate for device testing, and the electronic properties of the material are measured. The thickness of the all-carbon polymer film prepared by the invention is between 30nm and 500nm, and the mobility is two to three orders of magnitude higher than that of other alkyne two-dimensional polymers. Moreover, the preparation process does not require a vacuum degree, and the reaction temperature is between 200 and 300°C.

A material having a two-dimensional structure can have high strength properties.

The present invention relates to polymeric structures, in the form of flat membrane-like surfaces or micro- nanostruc-tures such as capsules, characterized in that it comprises a substantially two-dimensional layer of covalently-bonded monomers of R-substituted metal or metalloid oxides. Said polymeric structures in most embodiments have a crystal architecture with a hexagonal lattice, but the nature of the covalent bonds present therein impart a bending flexibility that make the polymeric structures behave as a “soft” crystal. Methods of producing such structures, composition comprising thereof and method of using thereof are also included within the present disclosure.