6results about How to "Strong structural controllability" patented technology

The invention provides an oligomeric micromolecule donor compound as well as a preparation method and application thereof. The oligomeric small molecule donor compound belongs to a brand-new long conjugate organic small molecule donor material containing a connecting unit, two or more efficient organic small molecule donors are combined into a whole, the conjugate length is prolonged, and a series of novel oligomeric small molecule donor materials are synthesized. The oligomeric small molecule donor compound disclosed by the invention has good batch repeatability and relatively good film-forming property; the oligomeric small molecule donor compound prolongs the conjugate length, has excellent ultraviolet-visible light absorption performance, has strong interaction and aggregation among molecules, can realize good phase separation from a non-fullerene receptor, has a proper electron energy level, and is suitable for being used as an electron donor material in an organic solar cell.

The embodiment of the present invention discloses a multi-shell structure CO-SCR denitration catalyst and a preparation method thereof. The method comprises: hydrothermally treating a carbon source to obtain a carbon ball; using the carbon ball as a template and a metal salt as an active raw material, and obtaining a multi-shell precursor through a step-by-step precipitation process; and calcining the multi-shell precursor to obtain the CO-SCR denitration catalyst. The present invention improves the heterojunction interaction between oxides by forming a multi-shell structure through layer-by-layer self-assembly, effectively regulates the electronic structure on the catalytic active site, thereby selectively adsorbing different gas reactants, and achieving good low-temperature activity and anti-oxidation, SO2 and H2O performance.

The invention discloses a PVC / polyester composite material for a high-performance hose and a preparation method thereof. The composite material is prepared from the following components: 60-70 parts of PVC resin, 15-30 parts of polystyrene resin, 10-30 parts of filler, 5-15 parts of polyester plasticizer, 8-16 parts of composite modifier, 0.5-2 parts of lubricant, 1-2 parts of heat stabilizer and 0-1.5 parts of colorant. The addition of the composite modifier significantly improves the compatibility of PVC with other components and enhances the interface bonding force, so that the final material has excellent heat resistance, weather resistance and mechanical strength.

The application relates to the technical field of nanomaterial preparation, in particular to a method for preparing Cu@Ag particles by laser, which comprises the following steps: S1, preparing a solution: dissolving a copper precursor in a solvent to obtain a copper precursor solution, and dissolving a silver precursor in a solvent to obtain a silver precursor solution; S2, irradiating the copper precursor solution by using a femtosecond pulse laser to generate nano-copper particle cores through reduction; S3, adding the silver precursor solution into the liquid phase environment containing the nano-copper particle cores, adjusting the wavelength parameter of the picosecond pulse laser to the surface of the nano-copper particle cores to realize laser energy focusing, irradiating the solution by using the picosecond pulse laser, allowing silver ions to be reduced and deposited on the surface of the nano-copper particle cores to form a silver shell, and thus obtaining Cu@Ag particles, so that the problems that the existing chemical reduction method is not environmentally friendly and it is difficult to accurately control the generation sequence of the core and the shell are solved.

The present invention proposes a long-lasting fragrance type flavor microcapsule and its preparation method and application, which belongs to the field of flavor technology. The first flavor is coated in calcium carbonate particles, and then coated in silk fibroin / silicon oxide hybrid capsules, and then the calcium carbonate in the silk fibroin / silicon oxide hybrid capsules is dissolved with hydrochloric acid solution, and the second essential oil is coated in gum arabic and gelatin wall materials by a double coagulation method to obtain a second essential oil microcapsule, and the second essential oil microcapsule and the silk fibroin / silicon oxide hybrid capsule are coated together in a cross-linked product of sodium alginate and calcium to obtain a long-lasting fragrance type flavor microcapsule. After the essence of the present invention is microencapsulated, it changes from liquid to solid powder, which is conducive to storage, transportation and use; secondly, it inhibits the rapid volatilization of essential oils, increases the fragrance retention time, and expands its application range; thirdly, it protects sensitive components in the essence. Many components in the essence are sensitive to light, heat, acid, etc., and microencapsulation can reduce the reaction of the essence with the outside world.

The invention relates to a multifunctional bio-based lubricating oil additive as well as a preparation method and application thereof. Natural sinapic acid, a boron-containing compound and long-chain alkyl acrylate are used as components, the oil-soluble multifunctional bio-based lubricating oil additive is prepared through a protection-polymerization-activation three-step method, active sites are shielded firstly, and release is performed after polymerization, so that efficient copolymerization of multifunctional monomers is realized. The multifunctional additive structurally comprises three key functional units: a sinapic acid unit (m) for providing hindered phenolic hydroxyl and endowing excellent oxidation resistance; the side chain of the boron-containing unit (p) contains a boronic acid pinacol ester group, so that excellent wear resistance and friction reduction performance are provided; the long chain alkyl unit (n) provides good oil solubility and acts as a viscosity index improver. By adjusting the ratio of m: n: p, the performance emphasis of the additive can be customized according to different working condition requirements.