42results about How to "The structure is easy to control" patented technology

The invention discloses a CFs@TiC / TiO 2 Composite material and its preparation method and application, said CFs@TiC / TiO 2 The preparation process of composite materials is as follows: (1) carbon fiber (CFs) is used as carbon raw material, and carbon fiber is degummed by Soxhlet extraction method to obtain single dispersed fiber; (2) titanium hydride is used as titanium molten salt method in Porous titanium carbide grown on the surface of carbon fiber; (3) using potassium hydroxide hydrothermal method to partially convert the titanium carbide grown on the surface of carbon fiber into potassium titanate nanosheets; (4) after acid treatment and heat treatment, CFs@TiC / TiO 2 Composite functional materials. The invention has simple process, easy adjustment and control of material structure, excellent performance of the prepared composite material, and is convenient for industrial production and engineering application.

The invention discloses a micromolecular polypeptide. The amino acid sequence of the micromolecular polypeptide is represented by SEQ ID No.1. The invention also provides applications of the micromolecular polypeptide. The micromolecular polypeptide has a good activity on resisting parasites, at the same time has an antibacterial activity, has the advantages of strong stability and easily adjustable structure, and has a prominent application potential.

The invention discloses a thiocyanate cobalt hydrogen bond type ferroelectric material as well as a preparation method and application thereof. In the present invention, dabco is fully dissolved in methanol, then hydrochloric acid with a mass concentration of 36% to 37% is added dropwise and fully stirred to obtain solvent 1; cobalt chloride is added to water and fully dissolved to obtain solvent 2; potassium thiocyanate Add it into water to fully dissolve to obtain solvent 3; mix solvent 2 and solvent 3 and add it to solvent 1, and mix well to obtain a mixed solvent. The molar ratio of cobalt chloride, potassium thiocyanate, and dabco in the mixed solvent is 1 ~2:5~6:1~2; the mixed solvent is placed in a clean environment for 6~8 days, and the precipitated dark blue massive crystals are thiocyanate cobalt hydrogen bond type ferroelectric materials. The material structure of the present invention is easy to control, has excellent electrical properties, and can be widely used in fields such as ferroelectric memory and infrared detectors; in addition, the preparation method of the present invention has the advantages of less energy consumption, low cost, and easy production, and is environmentally friendly .

The invention belongs to the organic chemical field, and discloses a chloroquinoxaline compound, a structural general formula of the conjugated polymer is shown as I. The compound introduces a fluorine atom with a strong electrosorption characteristic on quinoxaline, thereby the HOMO energy level of the material can be effectively reduced, and the open-circuit voltage of a polymer photovoltaic cell can be enhanced. By using cyclic voltammetry determination of the HOMO energy of the compound, compared with a non-chloroquinoxaline derivative, the HOMO energy level of a single fluoropolymer is lower by 0.02-0.15eV than that of the non-chloroquinoxaline, and the HOMO energy level of the double fluoro polymer is lower by 0.05-0.3eV than that of the non-chloroquinoxaline. The compound can be taken as an intermediate of a polymer photovoltaic material for preparing the polymer photoactivity material with excellent performance. By using cyclic voltammetry determination of the HOMO energy of the compound A-I, compared with the non-chloroquinoxaline derivative, the HOMO energy level of the single fluoropolymer is lower by 0.02-0.15eV than that of the non-chloroquinoxaline, and the HOMO energy level of the double fluoro polymer is lower by 0.05-0.3eV than that of the non-chloroquinoxaline.

The invention relates to a nanopore polymer foam and a preparation method thereof, and belongs to the technical field of preparation of polymer foam. The nanopore polymer foam is characterized in thatthe mutual dissolving property of PVDF (polyvinylidene fluoride) and PMMA (polymethyl methacrylate) is utilized, and the PVDF and the PMMA can reach the uniform dispersing at molecule size in a mixture; by leading fluid with certain pressure, the uniformly dispersed PVDF microspheres in the mixture are induced to form crystal grains with certain size, so as to provide a nucleation point with veryhigh concentration for subsequent foaming, and greatly improve the foam pore density; by mixing with the PVDF, the glass-transition temperature of a foaming substrate is reduced, the rheological property of the substrate is improved, the expanding time of the foam pores is effectively prolonged, and the foaming rate of the polymer foam is greatly improved; the large-rate nanopore polymer foam canbe prepared at high efficiency, and the foam pore structure can be effectively regulated and controlled; the technology is simple, the preparation process is green and pollution-free, and the cost islow.

The invention discloses a micro-molecule polypeptide, and the amino acid sequence of the micro-molecule polypeptide is as shown in the SEQ ID NO.1. The invention further provides application of the micro-molecule polypeptide. The polypeptide is excellent in alpha-glucosidase inhibitory activity and antioxidant activity and strong in stability, and has a remarkable application potential, and the structure of the polypeptide is easy to regulate and control.

The invention discloses preparation and an application of a magnetic nanoring microwave absorbing agent, and particularly relates to a magnetic nanoring microwave absorbing agent with characteristics of good monodispersity and homogeneity, high magnetic responsiveness, excellent microwave absorbing performance, adjustable size and composition and the like as well as a preparation method and an application of the magnetic nanoring microwave absorbing agent. A magnetic nanoring adopts a polycrystalline structure formed by agglomeration of nanocrystallines and is oval, the length of a long axis is 28-175 nm, the length of a short axis is 18-130 nm, and the ring wall thickness is 7-35 nm; the magnetic nanoring comprises the component of Fe3O4, Fe3O4 / C or Fe / C with a spinel structure; ferric glycolate is taken as a precursor, and the magnetic nanoring is prepared by adopting an inert gas protective carbothermic reduction method-carbonization-solid-phase diffusion growth cooperation mechanism. The preparation and the application of the magnetic nanoring microwave absorbing agent are simple in process, low in cost and high in efficiency and facilitate industrial application and popularization, and the Fe3O4 and the carbon-magnetic nanoring have broad application prospects in the aspects of microwave absorption, a catalyst, an electrode material, a magnetic recording material, a biological sensor, separation or medical imaging.

The invention discloses a micro-molecule polypeptide, which has an amino acid sequence as shown in SEQ ID No.1. The invention also provides application of the micro-molecule polypeptide. The polypeptide provided by the invention has favorable alpha-glucosaccharase inhibitory activity and antioxidant activity, high stability, an easily-regulated structure and a remarkable application potential.

The invention provides a MOFs@IBU nanofiber transdermal sustained-release material with dual-response drug release and a preparation method and application thereof. The preparation method of the sustained-release material comprises the steps of: mixing ligand 4, 4'-((4-(4H-1,2,4-triazol-4-yl)benzene)azodioyl)dibenzoic acid, Zinc nitrate and ibuprofen were dissolved in a mixed solvent of water and N,N-dimethylformamide, and diethanolamine (DEA) was added to mix them evenly. The reaction was allowed to stand at room temperature for 20-30h, and the MOFs were obtained by centrifugation, washing and drying. @IBU; Dissolve polyacrylonitrile in N,N-dimethylformamide (DMF), add MOFs@IBU, mix and disperse uniformly to obtain spinning solution; then electrospin and dry to obtain. The nanofiber membrane obtained by the invention has the drug release capability of dual response of pH and temperature; the preparation process is simple, the energy consumption is low, the structure of the drug-carrying system is easy to control, and the cost is low.

The invention discloses an alkyl siloxane-olefin random copolymer as well as a preparation method and an application thereof. The structure of the alkyl siloxane-olefin random copolymer is shown in formula (I), wherein R refers to C1-C8 alkyl groups or phenyl groups, the value of m ranges from 1.5 to 200, the value of n ranges from 150 to 2000, the ratio of m to n ranges from 0.01 to 0.1, a is an integer between 0 and 8, b is an integer between 1 and 9, and c is an integer between 0 to 8. The alkyl siloxane-olefin random copolymer is used as a polyolefin processing modifier, can effectively improve the flowing property of a product, and does not affect and even improves the mechanical property of the product.

The invention discloses an intercalation material for enhancing the interlayer performance of a continuous fiber resin-based composite board and a preparation method thereof. The intercalation material mainly utilizes the synergistic effect of polymer fiber non-woven fabrics and acicular iron oxide particles, which can effectively improve the interlayer toughness of continuous fiber resin-based composite sheets, and orient the acicular iron oxide particles with the aid of a magnetic field. arrangement to obtain a more efficient toughening effect. The specific method is: first, disperse and dissolve different raw materials such as magnetic acicular iron oxide particles, auxiliary dispersing agent, coupling agent, etc. in a suitable solvent according to a certain proportion, and then spray or dip them on the polymer fibers of a specific material. On the non-woven fabric, the magnetic needle-shaped nano-iron oxide particles are then aligned along the direction perpendicular to the surface of the polymer fiber non-woven fabric under the assistance of a magnetic field, and the final product is obtained after drying. The preparation method of the intercalation material has the characteristics of simple process, low cost, safety and environmental protection, and high production efficiency.

The invention relates to a preparation method of a metal nano-network flexible panel for electronic information display. The method includes the following steps that a SiO2 thin film is prepared on asilicon slice as a sacrificial layer; a GZO thin film, an AZO thin film or a ZnO thin film are prepared on the sacrificial layer as a covering layer; diluted HNO3 is dropped on the covering layer, thecovering layer is corroded to obtain cracks between particles; then HF is dropped to corrode the SiO2 thin film under the cracks between the particles; an Ag metal thin film is produced by sputtering; the GZO thin film is removed by HCI immersion, HF immersion is carried out to remove the SiO2 thin film to obtain a metal Ag nano-network; the metal Ag nano-network is transferred to a PET flexibletransparent substrate coated with EVA optical cement to obtain a metal Ag nano-network transparent conductive flexible panel. The preparation method has the advantages that on the basis of preparing the large-particle GZO thin film, AZO thin film or ZnO thin film, combined with magnetron sputtering and wet etching, the metal nano-network transparent conductive flexible panel is obtained, wherein the metal nano-network structure is easy to regulate and the manufacture is simple and convenient.