11results about How to "Chemically inert" patented technology

The invention belongs to the technical field of hydrogen bond organic framework materials, and relates to a three-component hydrogen bond organic framework material as well as a preparation method and application thereof, the chemical formula is {C26H21O12P4. (CH6N3). (C10H12N4). (H2O)} n, and n is a positive integer. A structural unit belongs to a triclinic system, a space group is P-1, a molecular formula is C37H41N7O13P4, and each repeating unit comprises a water molecule, a G < + > cation, a DBpy < 2 + > cation and a H5TPE < 3-> molecule; amino groups on G < + > cations, amino groups on DBpy < 2 + > cations, deprotonated HPO3-groups in H5TPE < 3-> molecules and unprotonated phosphonic acid groups have a synergistic effect, and water molecules form a two-dimensional hydrogen bond network. According to the three-component strategy, the chemical and structural diversity of HOFs is greatly expanded, and the material performance is remarkably improved.

The invention relates to the technical field of MAX phase material processing, in particular to a polishing method of a Max phase TiAlC material and a prepared Max phase TiAlC polishing material. The invention provides a method for polishing a Max-phase TiAlC material, which comprises the following steps: a polishing pad and a polishing solution are adopted for polishing, an abrasive material in the polishing solution is diamond, the mass of the diamond is 0.1 wt%-5wt% of the mass of the polishing solution, and the particle size of the diamond in the polishing solution is 30-250 nm; the hardness of the polishing pad is Shore hardness A 30-90 degrees; and the density of the polishing pad is 0.3-0.7 g / cm < 2 >. According to the polishing method of the Max-phase TiAlC material, the polishing pad is used for replacing a grinding disc of fixed abrasive particles for machining, and the process is greatly simplified.

The invention relates to the technical field of building waterproof composite materials, in particular to an organic silicon modified resin building waterproof composite material and a preparation method thereof. Comprising a waterproof roll and a waterproof coating arranged on the surface of the waterproof roll, the waterproof coating is prepared from the following components in parts by weight: 20 to 32 parts of silane modified polyether, 15 to 30 parts of organic silicon modified resin, 5 to 10 parts of polysaccharide-based composite polylactic acid, 8 to 12 parts of plasticizer, 1 to 3 parts of curing agent, 0.5 to 2 parts of titanium dioxide and 0.5 to 3 parts of water removal agent. An organic silicon structure in the prepared waterproof composite material has the characteristic of low surface energy, so that the surface of a coating presents strong hydrophobicity, and liquid water permeation is effectively blocked; the waterproof coating can be matched with a compact cross-linked network structure to form a continuous and seamless waterproof film, realizes high hydrostatic pressure resistance and low water absorption, and is suitable for key waterproof parts such as roofs, basements and toilets.

The present application relates to a kind of based on carbonized wood natural structure dopamine electrochemical sensor and its preparation method and application, the working electrode of the electrochemical sensor is modified with carbonized wood-ZnO nanowire-ZIF-8.The electrochemical sensor of the present application uses carbonized wood as substrate, after cutting carbonized wood whole piece, using conductive carbon paste is pasted on working electrode, while ensuring conductivity, also retain the three-dimensional structure of nanomaterial not be destroyed, guarantee the performance of sensor, with good application prospect.

The application discloses a kind of corrosion-resistant anti-aging plastic packaging barrels and preparation method thereof, belong to plastic product processing technical field, to solve the technical problems that corrosion resistance and anti-aging performance of plastic packaging barrel in prior art need to be further improved, specifically including the following raw material composition by portion: 60-70 parts modified silicone, 3-5 parts modified aging-resistant filler, 8-12 parts polypropylene, 12-18 parts maleic anhydride grafted polypropylene and 3-5 parts auxiliary additive, the application is that polypropylene, maleic anhydride grafted polypropylene, modified silicone, modified aging-resistant filler and auxiliary additive are added into double-screw melt extruder, melt extrusion, injection mold, obtain plastic packaging barrel, not only improve its corrosion resistance and anti-aging performance, also improve its mechanical properties.

The invention discloses a long-acting fluorescent antibacterial coating and a preparation method thereof, and belongs to the technical field of chemical materials. The coating consists of polyurethane and SrAl2O4: Eu < 3 + > and Dy < 3 + > powder dispersed in the polyurethane, according to the invention, the polyurethane-strontium aluminate coating is formed on the surface of the substrate, so that the adhesive force of the coating on the surface of the substrate can be enhanced, the SrAl2O4: Eu < 3 + > and Dy < 3 + > powder can continuously release trace active oxygen free radicals in an illumination environment, and the SrAl2O4: Eu < 3 + > and Dy < 3 + > powder can emit fluorescence in the dark and continuously release the active oxygen free radicals for 2 hours, thereby realizing continuous antibacterial effect. The polyurethane-strontium aluminate coating is prepared in the mode that the polyurethane coating and the SrAl2O4: Eu < 3 + > and Dy < 3 + > powder are mixed and coated, lasting fluorescence is achieved, meanwhile, the long-acting antibacterial effect is achieved, and the existence of the antibacterial effect of the coating can be verified through the existence of fluorescence when no illumination exists; and moreover, no heavy metal ions are released, the environment-friendly effect is achieved, and the problems of bacterium attachment and pollution on the surface of a solid base material are effectively solved.

The application provides an oil tank and a vehicle, and relates to the technical field of automobile accessories. The oil tank comprises a tank body, the tank body comprises a first outer layer and a first inner layer which are arranged in layers, the first outer layer is located on the outer side of the first inner layer, the first inner layer is a first methanol-resistant anticorrosive layer, and the first outer layer is a first light metal layer. The oil tank and the vehicle can prolong the service life of the oil tank.

This utility model discloses an auxiliary device for improving the accuracy of gas chromatography determination of N,N-dimethylformamide in water, belonging to the technical field of N,N-dimethylformamide determination. This auxiliary device includes an auxiliary mechanism and a filtration mechanism. The auxiliary mechanism includes a housing with a door hinged to one side of the upper end via a pair of hinges. A water inlet pipe is installed at the upper end of the door, and a drain pipe is installed at the center of the bottom end of the housing. A limiting frame is installed at the bottom of the housing. The filtration mechanism includes a mounting frame with a pair of equal-dividing plates fixedly installed inside. Slide rails are installed on both sides of the mounting frame at the bottom of the pair of equal-dividing plates. A filter layer and an adsorption layer are slidably installed between the two pairs of slide rails. This utility model can effectively improve the accuracy of gas chromatography determination of N,N-dimethylformamide and has high practical value.

The present invention relates to the technical field of MAX phase material processing, and in particular to a polishing method for a Max phase TiAlC material and a prepared Max phase TiAlC polishing material. The present invention provides a polishing method for a Max phase TiAlC material, comprising the following steps: polishing with a polishing pad and a polishing liquid, wherein the abrasive in the polishing liquid is diamond, the mass of the diamond is 0.1wt%~5wt% of the mass of the polishing liquid, and the particle size of the diamond in the polishing liquid is 30nm~250nm; the hardness of the polishing pad is Shore A30~90 degrees; the density of the polishing pad is 0.3~0.7g / cm 2 The polishing method of the Max phase TiAlC material provided by the present invention utilizes a polishing pad to replace a grinding disc with fixed abrasive grains, thereby greatly simplifying the process.

The application discloses a kind of electrochemical auxiliary ohmic contact wafer resistivity nondestructive testing equipment and nondestructive testing method, the electrochemical auxiliary ohmic contact wafer resistivity nondestructive testing equipment includes: shell, two probes, first electrolyte and integrated control system;The cavity is formed in the shell, the insulating clamp is equipped in the shell, the insulating clamp is used to clamp the sidewall of the wafer to be measured, to fix wafer;Two probes are respectively arranged at the upper and lower ends of wafer;And the probe is spaced apart from wafer, and the probe is formed with flow port;The first electrolyte is located between probe and wafer;The flow port is used to flow the first electrolyte to between probe and wafer;The integrated control system has positive and negative poles, and the positive and negative poles of integrated control system are respectively connected with two probes.The application has the advantages of avoiding damaging wafer while saving process steps, improving detection efficiency.

This invention belongs to the field of SERS detection, specifically relating to a double-shell Ag-ZnAl2O4-MOF composite material, its preparation method, and its application in trace detection of organic pollutants. First, ZnAl2O4 nanoparticles are synthesized using a hydrothermal method. Then, the prepared ZnAl2O4 nanoparticles are placed into a prepared MOF growth solution to form a ZnAl2O4-MOF composite structure. Further composite with Ag nanoparticles is then formed to create the double-shell Ag-ZnAl2O4-MOF composite material. The Ag-ZnAl2O4-MOF composite substrate exhibits a synergistic effect of physical and electromagnetic reinforcement. Furthermore, due to the large specific surface area, porosity, and multiple metal sites of the intermediate MOF layer, more hot spots can be formed. The charge transfer effect generated by the composite with ZnAl2O4 produces an electromagnetic reinforcement effect. These characteristics effectively enhance the SERS signal intensity.