23results about How to "Stable molecular structure" patented technology

The invention discloses high-temperature and high-pressure filtrate reducer sulfonated asphalt for drilling fluid and a preparation method of the high-temperature and high-pressure filtrate reducer sulfonated asphalt, and belongs to the technical field of filtrate reducers. A comb-shaped side chain is introduced into a benzene ring of SEBS, the benzene ring is endowed with a comb-shaped structure, the structure strongly interacts with sulfonated asphalt, asphalt dispersion is optimized, agglomeration is avoided, 5-(2-hydroxyethyl) uracil is introduced, the oleophylic and hydrophilic characteristics are balanced, the acting force between asphalt particles is reduced, the reaction efficiency and uniformity of asphalt and fuming sulfuric acid are improved, and the sulfonated asphalt is prepared. The dispersant promotes uniform dispersion of asphalt, accelerates sulfonation reaction and improves sulfonated asphalt quality. The surface activity of the modified SEBS and the sulfonated asphalt form a net structure, so that the water solubility of the asphalt is enhanced, the drilling fluid is convenient to blend, the liquid surface tension is reduced, and the bubble formation condition is destroyed. A quaternary ammonium salt group is introduced, a well wall is stabilized by utilizing an opposite attraction principle, clay hydrophobicity is promoted, hydration and expansion are inhibited, and collapse is prevented. The modified sulfonated asphalt is resistant to temperature and pressure, good in filtration resistance and stable in filtration control at high temperature and high pressure.

The invention discloses an organic carbonyl compound electrode material, a preparation method and application of the organic carbonyl compound electrode material in a lithium ion battery, and the organic carbonyl compound electrode material is bipyridino [3 ', 2': 5, 6; the invention relates to an organic carbonyl compound electrode material, which is prepared from 2, 2 ', 3': 7, 8] quinoxaline [2, 3-i] bipyridino [3, 2-a: 2 ', 3'-c] phenazine-10, 21-diquinone and 1, 2, 4, 5-tetraamino p-benzoquinone and 1, 10-phenanthroline-5, 6-diketone through a dehydration condensation reaction. When the organic electrode material is used as a positive electrode material to be applied to a lithium ion battery, due to the fact that the organic electrode material contains a large conjugated system, the organic electrode material has good dissolution inertness in electrolyte and is beneficial to electron transmission, and therefore the cycling stability and the rate performance of the battery are improved. In addition, multiple active sites provide more redox active sites to coordinate with lithium ions, so that reversible lithium storage is realized, and relatively high capacity is shown.

The invention provides a preparation method of a composite soft capsule shell containing plant starch, and belongs to the technical field of soft capsules. The composite soft capsule shell is prepared from the following components in percentage by mass: 15 to 30 percent of gelatin, 5 to 20 percent of modified plant starch, 1 to 15 percent of composite plant gum, 1 to 10 percent of dopamine grafted pulullan, 10 to 30 percent of plasticizer and 25 to 45 percent of solvent; compared with the existing soft capsule skin, the soft capsule skin prepared by the invention has better mechanical strength and toughness, overcomes the problem of disintegration and delayed release caused by a capsule shell crosslinking aging reaction, is beneficial to the preservation of the soft capsule and reduces the storage cost.

The invention discloses a distillation purification method for preparing a silane coupling agent, and belongs to the technical field of preparation of silane coupling agents. The distillation and purification method for preparing the silane coupling agent comprises the following steps: step 1, mixing a silane coupling agent crude product, tetrahydrofuran, an organic antioxidant and an auxiliary agent, heating, mixing and stirring to obtain a mixture; 2, adding the mixture into a distillation tower, heating and distilling, controlling the heating temperature and the distillation rate, and ensuring stable and continuous evaporation and condensation of the silane coupling agent; and 3, collecting the condensed liquid into a collector, separating the liquid, filtering, and drying to obtain the silane coupling agent. According to the method, the product purity and yield of the silane coupling agent can be effectively improved.

The invention provides a diaphragm with an active coating for a battery and a preparation method of the diaphragm. The diaphragm is composed of a diaphragm substrate and a composite coating coated on the substrate, the composite coating comprises an outer coating and an inner coating, wherein the outer coating contains N-methyl-N-propyl pyrrolidine bis (trifluoromethanesulfonyl) imide, and the inner coating contains any one or more of polyacrylic acid, a metal organic framework compound, modified boehmite, polyvinylidene fluoride and polymethyl methacrylate. The N-methyl-N-propyl pyrrolidine bis (trifluoromethanesulfonyl) imide salt is coated on the diaphragm, so that the thermal stability and the ionic conductivity of the diaphragm can be enhanced, the internal resistance of the battery is reduced, the charge-discharge efficiency of the battery is improved, the cycle life of the battery is prolonged, and meanwhile, the potential harm to the environment is relatively small. The N-methyl-N-propyl pyrrolidine bis (trifluoromethanesulfonyl) imide salt has good compatibility with the electrolyte of the lithium ion battery and is not easy to generate chemical reaction, so that the performance stability and the safety of the battery are ensured.

The invention discloses a preparation method of a low-energy-consumption anti-icing / deicing super-hydrophobic coating, and belongs to the field of preparation of anti-icing coatings. The invention aims to solve the problems that the existing super-hydrophobic coating with the photo-thermal electric heating function adopts a fluorine-containing material as a raw material, and is poor in cycling stability and high in energy consumption. The method comprises the following steps: 1, preparing graphene slurry; 2, preparing an anti-icing / deicing super-hydrophobic coating solution; and 3, preparing the coating. The method is used for preparing the low-energy-consumption anti-icing / deicing super-hydrophobic coating.

The invention discloses a nitrogen axial coordination five-coordination Co monatomic carbon dioxide electroreduction catalyst and a preparation method thereof, and belongs to the technical field of metal catalysts, the nitrogen axial coordination five-coordination Co monatomic carbon dioxide electroreduction catalyst comprises a nitrogen-doped carbon nanotube and CoPc molecules independently loaded on the surface of the nitrogen-doped carbon nanotube in a five-coordination manner, the nitrogen-doped carbon nanotube is dispersed in DMF, and the CoPc molecules are loaded on the surface of the nitrogen-doped carbon nanotube in a five-coordination manner; coPc is dispersed in DMF, a mixed solution of the DMF is dropped into a mixed solution of the CoPc in a stirring state, and after continuous stirring is performed for 20-30 h, suction filtration, washing and drying are performed to obtain the CoPc / DMF composite material. The single selectivity of reducing carbon dioxide into carbon monoxide is achieved, the Faraday efficiency of 90% or above is still kept under the high current density, the stability is excellent, and the method is suitable for large-scale production and application.

The present invention relates to the technical field of silsesquioxane preparation, and in particular to a method for preparing a polyhedral oligomeric silsesquioxane containing acryl metallocene. Specifically, trisilanol heptaisobutyl polysilsesquioxane is dissolved in a solvent, (methacryloyloxymethyl) methyldimethoxysilane is added, and the mixture is stirred and reacted in a water bath under an inert atmosphere, and an isopropanol solution of chloroplatinic acid, vinyl ferrocene, and dimethylallyl triammonium lanthanum diphosphate are continuously added, and the mixture is stirred and heated to react, and then the solvent is removed by reduced pressure distillation, and alcohol is added for repeated washing, and the polyhedral oligomeric silsesquioxane containing acryl metallocene is obtained after drying. The polyhedral oligomeric silsesquioxane containing acryl metallocene prepared by the method has excellent thermal stability, chemical corrosion resistance, and mechanical strength.

This utility model discloses a protective mechanism for an automotive shock-absorbing weighing display controller, relating to the technical field of automotive shock-absorbing weighing display controllers. It includes a controller body and a multi-stage progressive shock-absorbing mechanism. The multi-stage progressive shock-absorbing mechanism is fixedly connected to the outer surface of the controller body. The multi-stage progressive shock-absorbing mechanism includes a metal spring fixedly connected to the outer surface of the controller body. A helical steel spring is fixedly connected to one side of the metal spring, and a butyl rubber damping rod is fixedly connected inside the helical steel spring. A fluororubber sealing ring is provided at the upper end of the butyl rubber damping rod. The helical steel spring is vertically installed between the controller body and the protective housing. Compared with existing ordinary protective mechanisms, this automotive shock-absorbing weighing display controller protective mechanism improves the buffering effect and enhances the operational stability of the controller in high-frequency vibration environments. It also reduces the overall weight of the housing while increasing its strength, meeting the vehicle's lightweight requirements and reducing additional load.

The invention provides scratch self-repairing polycarbonate and a preparation method thereof. The polycarbonate raw material contains a bis (triazinyl) amino-s-diphenylethylene-disulfonic acid compound. The method comprises the following steps: adding a bisphenol hydroxyl group-containing compound, alkali metal hydroxide and sodium hydrosulfite into water, and reacting to obtain a homogeneous aqueous solution a; adding a bis (triazinyl) amino-s-diphenylethylene-disulfonic acid compound into the aqueous solution a to obtain a homogeneous aqueous solution b; adding an oily solvent into the aqueous solution b to obtain a water-oil two-phase mixture c; phosgene and alkali liquor are introduced into the water-oil mixture c for a reaction, and a solution d is obtained; adding an end-capping reagent and a catalyst into the solution d, and continuously introducing alkali liquor to obtain a reaction product e; the reaction product e is subjected to standing two-phase separation, cleaning and solvent removal, and a PC-bis-triazinyl amino-s-diphenylethylene-disulfonic acid compound copolymerization solid product f is obtained. The polycarbonate provided by the invention has scratch self-repairing performance, and can realize integrity recovery of surface morphology in a short time.

This utility model relates to the field of twin-screw extrusion technology for nylon granules, and discloses a twin-screw extrusion device for reinforced nylon granules, including a housing assembly, a heating assembly, an extrusion assembly, a pressurizing assembly, and a cooling assembly. The heating assembly is symmetrically distributed and installed on the outer wall of the housing assembly, the extrusion assembly is installed inside the housing assembly, the pressurizing assembly is installed above the housing assembly, and the cooling assembly is installed at the bottom of the housing assembly. The pressurizing assembly is provided to apply additional pressure to the material during extrusion, causing the material to undergo stronger compression and shearing between the screw and the barrel. This also helps to more uniformly integrate the components in the nylon granules, reducing microscopic inhomogeneity in the material, thereby improving the mechanical properties, dimensional stability, and appearance quality of the product. The cooling assembly is provided to facilitate rapid cooling of the material after extrusion, maintaining the molecular structure and performance stability of the nylon granules.

The invention provides an organic polymer crystal material based on a hydrogen bond network and a preparation method and application thereof. The material can be generally used in alkali metal ion batteries. According to the organic electrode material, unsaturated carbonyl is used as a redox active site, a piperazine structure is connected with a benzoquinone monomer to expand a conjugated structure, an intermolecular hydrogen bond can be formed, a polymer molecular chain can be connected to realize two-dimensional structure expansion, and finally a graphite-like layered structure is formed. Reversible storage of metal ions is realized through synergistic coordination of N and O in the structure and the metal ions. The organic polymer crystal positive electrode material has the advantages of easiness in large-scale production, high capacity, good rate capability, high cycling stability and the like, and has great application value.

The invention provides a high-temperature durable organic silicon defoaming composition. The high-temperature durable organic silicon defoaming composition is prepared from alkyl polysiloxane, phenyl siloxane, fluorine-containing siloxane, hydrophobic modified silicon dioxide, an antioxidant and a dispersing agent, various groups, such as alkyl, benzene ring and fluorine-containing group, are introduced into the side chain of polysiloxane; according to the defoaming composition disclosed by the invention, due to the introduction of phenyl siloxane, the molecular structure is more stable, and relatively low volatility and excellent chemical stability can be kept under a high-temperature condition; the fluorine-containing group further enhances the thermal stability of polysiloxane on the molecular level, reduces the surface energy, and increases the adhesive ability of the defoaming agent on a gas-liquid interface. The optimized combination of the modified group, the dispersing agent and the antioxidant endows the defoaming agent with relatively strong oxidation resistance and chemical resistance, and the defoaming agent can stably work in a production environment with relatively strong oxygen-containing, acidic or alkaline properties.

The invention provides a preparation method of a water-based pigment dispersing agent for painting and the dispersing agent, and belongs to the field of pigments, four monomers of styrene, diallyl maleate, allyl maleate quaternary ammonium salt monomer and acrylic acid are adopted to synthesize a segmented copolymer solution, and then fatty alcohol-polyoxyethylene ether is used as a grafting modifier for modification. The allyl maleate quaternary ammonium salt monomer is obtained by preparing an intermediate from N-methylamine and allyl maleate ethylene oxide and recrystallizing and purifying the intermediate and a bromoalkane compound, and due to the fact that the allyl maleate quaternary ammonium salt monomer has the same structural unit as diallyl maleate, the molecular structure of the polymer is more stable; the polymer has a hydrophobic tail part and a positively charged head part consisting of an alkyl chain, so that the combination stability of the polymer and pigment particles in an aqueous medium is facilitated; branched alkyl and polyoxyethylene chain in the structure of fatty alcohol-polyoxyethylene ether have hydrophilic and hydrophobic properties at the same time, so that the dispersion effect and storage stability of the dispersant are further improved.

The invention discloses a high-temperature-resistant hot melt adhesive and a preparation method thereof, and relates to the technical field of hot melt adhesives. The high-temperature-resistant hot melt adhesive is prepared from the following raw materials in parts by weight: 25 to 35 parts of modified polyimide resin, 20 to 30 parts of modified benzoxazine resin, 8 to 12 parts of carboxyl-terminated nitrile rubber, 5 to 8 parts of C5 / C9 copolymerized petroleum resin, 3 to 5 parts of hydrophobic modified nano silicon dioxide, 1 to 2 parts of silicone powder, 0.5 to 1.0 part of antioxidant 1010, 0.3 to 0.8 part of zinc stearate and 0.05 to 0.1 part of tetrabutylammonium bromide. The high-temperature-resistant hot melt adhesive is scientific in raw material ratio, core resin is modified to improve heat resistance and compatibility, filler such as hydrophobic nano silicon dioxide is added to enhance performance, the preparation process is controllable, nitrogen protection is achieved in the whole process, moisture absorption is prevented through granulation and drying treatment, and a finished product is excellent in high-temperature resistance, good in comprehensive performance and good in storage stability.

This invention relates to a D-A-D structured NIR-II photothermal material, its preparation method, and its applications. Specifically, the photothermal material of this invention has a simple structure, is easy to synthesize, is easy to purify, and has a high yield. Furthermore, due to its large conjugated system, the molecular structure is stable and not easily degraded under NIR-II light irradiation. In addition, the photothermal material of this invention has excellent optical properties, good photothermal conversion efficiency, extremely low biotoxicity, and broad ultraviolet absorption in the 800-1000 nm range. Therefore, it has great application prospects in near-infrared photodynamic therapy and tumor treatment.

The invention discloses a retarder for large temperature difference oil well cement and a preparation method thereof, and belongs to the technical field of retarder preparation. The retarder for large temperature difference oil well cement is composed of the following components in parts by weight: 20-34 parts of effective component A, 22-32 parts of effective component B, and 44-58 parts of distilled water, wherein the effective component A is prepared from tetraethylenepentamine, n-hexyl methacrylate and hydroxyethylidene diphosphonic acid, and the effective component B is prepared from 1-methylimidazole, chlorobutane, chitosan, sorbitol and polyethyleneimine. The coagulant prepared by the method can effectively improve the retarding effect of cement, thereby improving the durability of cement and extending the service life of cement.

The invention discloses preparation of an ionic iridium complex and application of the ionic iridium complex to detection of 2, 4, 6-trinitrophenol. The preparation method of the iridium complex comprises the following steps: (1) hydrating iridium trichloride and a 2-(2, 4-difluorophenyl) pyridine main ligand to obtain a first intermediate; (2) preparing four NN type auxiliary ligands through different cyclization reactions; and (3) reacting an NN type auxiliary ligand with the first intermediate obtained in the step (1), and carrying out ion exchange by using ammonium hexafluorophosphate to obtain a target product. The iridium complex of the type is simple to synthesize and mild in condition, has good luminescence performance, has good response recognition performance on 2, 4, 6-trinitrophenol (TNP), and has great application potential.

The present invention discloses a spherical sodium zirconium phosphate powder, a preparation method and application thereof, and belongs to the technical field of dialysis materials. The preparation process of the sodium zirconium phosphate powder of the present invention comprises: + Zirconium phosphate synthesis, secondary H + The steps of synthesizing the sodium zirconium phosphate, washing, preparing the slurry, adding sodium reaction and structural stabilization reaction, adjusting the pH value, washing twice, drying and structural strengthening, screening and the like are included. The sodium zirconium phosphate powder prepared by the present invention is spherical in shape, has the characteristics of narrow particle size distribution range, high cation exchange capacity, recyclability, low Hausner ratio, low free phosphorus precipitation value, low zirconium element precipitation value, and excellent biochemical properties. The cation exchange capacity of the sodium zirconium phosphate powder is improved by more than 30% compared with the layered α zirconium phosphate materials in the prior art, and can be reused for more than 15 times, and the regeneration method is simple, so it has broad application value and prospects in the fields of hemodialysis and the like.

The invention relates to the field of phase-change energy storage materials, and particularly discloses a heat-release-controllable phase-change energy storage material capable of being transported for a long distance and a preparation method of the heat-release-controllable phase-change energy storage material. The preparation method of the phase change energy storage material comprises the following steps: magnetically stirring polyhydric alcohol and deionized water at 80 DEG C at a rotating speed of 400r / min for 1h, mixing, heating and dissolving; and cooling the obtained solution to room temperature, sequentially adding the tackifier and the photo-thermal material, mixing and stirring for 1 hour, ultrasonically dispersing for 30 minutes, putting into a glass bottle, putting into an air dry oven, drying for 1 hour at the temperature of 120 DEG C, removing excessive water, taking out, and sealing. By adding the photo-thermal material, the photo-thermal absorption rate of polyhydric alcohols contained in the phase change energy storage material can be enhanced under the illumination condition, then the overall performance of the phase change energy storage material is improved, by adding the tackifier, the molecular structure of the phase change energy storage material is more stable, and excellent heat storage performance can be kept during long-distance heat transportation.

The present disclosure relates to an oil filtering material, a preparation method and application thereof, and the raw materials of the oil filtering material include, in terms of mass percentage, 30-60% of water-absorbing material, 30-60% of thermoplastic elastomer material, 5-10% of compatibilizer and 1-5% of inorganic filler. The preparation method includes: mixing a certain proportion of the water-absorbing material, the thermoplastic elastomer material, the compatibilizer and the inorganic filler to obtain a mixture; plasticizing the mixture to obtain a melt; vulcanizing the melt to obtain a vulcanizate; crushing the vulcanizate to obtain a water-absorbing swelling material; uniformly laying the water-absorbing swelling material on a porous material and performing hot-pressing compounding to obtain the oil filtering material. The oil filtering material, the preparation method and application thereof have low cost, simple preparation process, and can improve the filtering effect of oil, especially vehicle ethanol gasoline, and prolong the service life of the oil filtering material.

The invention discloses an organic compound, an organic layer, application of the organic layer and an organic electroluminescent device, and relates to the technical field of organic electroluminescent materials.The general formula of the organic compound is shown in the formula (I) or the formula (II), and the molecular structure of the organic compound has a large plane conjugated structure, so that the organic compound has good charge transfer capacity; the molecular structure of the organic compound is very stable, and when the organic compound is applied to the organic electroluminescent device, the efficiency of the device can be improved, the service life of the device can be prolonged, and the working voltage of the device can be reduced.

The invention relates to the technical field of fish processing, provides a fish scaling and back-opening processing method, and overcomes the defects that a fish scaling and back-opening processing method in the prior art is low in production efficiency and causes mechanical damage to a fish body. Comprising the following treatment steps: (1) thoroughly flushing fish; (2) feeding the fish into a scaling solution for soaking treatment: preparing the scaling solution containing a compound enzyme, feeding the fish into the scaling solution for soaking treatment for 20-30 minutes, controlling the temperature of the scaling solution to be 35-39 DEG C, controlling the pH value of the scaling solution to be 6.5-8.0, and controlling the concentration of the compound enzyme to be 1-3 mg / ml, (3) water washing: spraying and washing the fish body soaked in the step (2) with high-pressure water to remove fish scales; and (4) back opening treatment.