2562 results about "Hydrogen bond" patented technology

The invention discloses an amorphous tigorasone solid dispersion which has excellent stability and dissolvability, by adding copovidone, a powerful hydrogen bond is formed between tigorasone and copovidone, and by adjusting the type of an adhesive and the proportion of the adhesive to tigorasone, the problems of easy crystal transformation of amorphous tigorasone, poor solubility and the like are solved. And the technical problem is solved. The tigorazan tablet prepared from the amorphous solid dispersion provided by the invention does not generate crystal transformation after being placed for 30 days under the conditions of 60 DEG C and 75% RH, and the dissolution curve in a standard medium is consistent with that of a reference preparation.

The invention relates to the technical field of high polymer materials, and particularly provides a self-repairing type UV curing alumite color layer coating and a preparation method thereof. The water-based ink is prepared from, by weight, 30-50 parts of polyurethane acrylic resin, 10-25 parts of modified acrylic oligomer containing dynamic covalent bonds, 2-5 parts of photoinitiator, 3-8 parts of hydrophobic modified nano filler and 1-3 parts of cross-linking agent, and the dynamic covalent bonds are selected from at least one of hydrazide bonds, boric acid ester bonds and Diels-Alder bonds. By introducing a gradient energy collaborative network of dynamic covalent bonds and quadruple hydrogen bonds, rapid self-repairing of the coating at normal temperature and thermal triggering recombination of deep damage are achieved, and meanwhile through the micro-phase separation design of the hydrophobic core-shell filler and the graft modified silicon carbide nanowires, the hydrolysis resistance is improved.

The invention relates to the technical field of building materials, and particularly discloses a high-performance solid-waste-based grouting material and a preparation method thereof. Comprising the following raw materials in parts by weight: 32 to 54 parts of Portland cement, 12 to 16 parts of a modified admixture, 2.4 to 3.6 parts of a functional filler, 42 to 56 parts of aggregate, 45 to 55 parts of a photoinitiator solution, 0.6 to 0.8 part of a water reducing agent, 0.9 to 1.1 parts of a composite expanding agent, 0.04 to 0.06 part of a defoaming agent and 9.2 to 12.4 parts of deionized water. Siloxane groups, acylamino groups, ester groups and benzene rings are chemically bonded on the surface of the modified admixture, so that the hydrophilicity of the modified admixture is reduced, the modified admixture can form hydrogen-bond interaction with hydroxyl groups and cement hydrates on the functional filler, and meanwhile, a flexible long-chain alkane structure on the functional filler can be entangled with the modified admixture, so that the flexibility of the modified admixture is improved. The mechanical property, the durability and the fluidity of the grouting material are improved.

The invention discloses a high-elasticity water-resistant flexible waterborne polyurethane elastic film product, and belongs to the field of waterborne polyurethane elastic film products. The waterborne polyurethane structure contains a strong supramolecular dynamic crosslinking unit and a polysiloxane unit, the strong supramolecular dynamic crosslinking unit has a metal-ligand effect and an optional multiple hydrogen bond effect, and the metal-ligand effect is preformed. In the polymerization process of the waterborne polyurethane, a preformed metal complex with a metal-ligand function serves as a weaving node, and the metal complex serves as a monomer and is cross-linked with a waterborne polyurethane chain segment. Due to the woven cross-linked interweaving structure, macromolecular chains connected to weaving nodes are spontaneously entangled. High polymer chain entanglement, reversibility of dynamic bonds and a cross-linked network endow the film with high strength, high elasticity, high flexibility and high density; meanwhile, the polysiloxane endows the film with water resistance and low viscosity. The waterborne polyurethane elastic film product prepared by adopting the structure is super-flexible, high in elasticity and good in water resistance.

The invention relates to a self-repairing high-mechanical-property film and a preparation method and application thereof, and the preparation method comprises the following steps: adding ureido pyrimidone and a chain extender into a solvent to obtain a mixed solution, adding the mixed solution into a polyurethane prepolymer, reacting, and drying to obtain the self-repairing high-mechanical-property film. UPy containing hydrogen bonds is introduced into the polymer to prepare the self-repairing high-mechanical-property film, and the hydrogen bond density can be adjusted by adjusting the UPy content of ureido pyrimidone, so that the composite material has excellent self-healing property; and density hydrogen bonds are introduced to construct a physical cross-linked network, so that the mechanical properties of the composite material can be remarkably improved.

The invention relates to the technical field of lithium batteries, in particular to a composite binder aqueous solution, a silicon-based negative pole piece and a preparation method and application of the silicon-based negative pole piece. The preparation method of the composite binder aqueous solution comprises the following steps: dissolving a water-based polymer binder and a micromolecular physical crosslinking agent in water, adding pyrrole, stirring, adding an initiator, and mixing to obtain the composite binder aqueous solution. A small molecule physical cross-linking agent is introduced into the water-based polymer binder, and a large number of hydrogen bond binding sites are increased, so that the mechanical property of the binder is remarkably enhanced, and the machinability of the pole piece is further improved. Meanwhile, polypyrrole can be generated in the binder through in-situ polymerization, and the polypyrrole can be tightly coated on the surfaces of the silicon particles through strong interaction between the binder and the silicon particles to form a stable conductive network, so that the charge transfer capability of the electrode is remarkably improved. In addition, the composite binder is also beneficial to formation of a solid electrolyte layer rich in Li-N and participates in formation of a solid electrolyte interface layer, so that the lithium ion transmission capability of the composite binder is further improved.

The invention discloses a soluble alkaline salt scale inhibitor and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The soluble alkaline salt scale inhibitor is prepared from amphiphilic modified graphene oxide, a surfactant, inorganic salt and deionized water, the amphiphilic modified graphene oxide contains a large amount of carboxyl groups, sulfonic acid groups, hydroxyl groups and the like, and has good metal ion chelating property; meanwhile, through the hydrophobic association effect and hydrogen-bond interaction between modified graphene grafted long carbon chains, the bonding probability between sodium ions of the soluble saline-alkali salt and bicarbonate radicals, carbonate radicals and chloride ions is further weakened, and through the synergistic effect of the amphiphilic modified graphene oxide, the surfactant and the inorganic salt, the salt scale inhibition effect is further improved; the method is especially suitable for soluble alkali salt water quality conditions of high temperature, high alkali and high salinity, can solve the problems of oilfield water injection, fracturing flowback strata and wellbore salt deposition, and has a good popularization prospect.

The invention relates to the technical field of biological extraction, in particular to a green synergistic extraction system and an extraction method and application thereof.The green synergistic extraction system comprises a deep eutectic solvent system, an enzymolysis system and an ultrasonic-assisted extraction system, and the deep eutectic solvent system comprises a DES solvent; the DES solvent is composed of a hydrogen bond acceptor and a hydrogen bond donor, and the hydrogen bond acceptor is choline, choline chloride or L-proline; the hydrogen bond donor is lactic acid, urea or ethylene glycol; enzyme preparations in the enzymolysis system are at least two of cellulase, pectinase and beta-glucosidase; the problems that a traditional organic solvent is high in toxicity and poor in biodegradability and synthetic deep eutectic solvent raw materials are non-renewable are solved, a green synergistic extraction system which is environmentally friendly, low in cost and excellent in performance is developed, the mass transfer efficiency and the extraction yield are improved, the used DES and enzyme preparations can be recycled, and the cost is reduced while the environment is protected.

The invention relates to the technical field of petrochemical engineering, and discloses a temperature-resistant anti-swelling agent for fracturing and a preparation process thereof.The preparation method comprises the steps that glycerol triglycidyl ether and diethanol amine are subjected to a ring-opening reaction, a polyhydroxy tertiary amine monomer is obtained, then the polyhydroxy tertiary amine monomer and chloromethylated polystyrene are subjected to a quaternization reaction, and the temperature-resistant anti-swelling agent for fracturing is obtained. Quaternary ammonium salt groups of the anti-swelling agent and negative charges on the surface of clay form electrostatic interaction, and hydroxyl groups and the surface of the clay form hydrogen-bond interaction, so that the anti-swelling agent can be firmly adsorbed on the surface of the clay to form a layer of polymer film, the clay is prevented from being in contact with water, the phenomenon that the clay swells when encountering water is effectively inhibited, and the anti-swelling rate is very high. And the anti-swelling agent contains a heat-resistant polystyrene molecular chain, has excellent high temperature resistance, can maintain good structural stability at high temperature, still maintains high anti-swelling rate, and is suitable for a fracturing fluid system for high-temperature oil reservoir exploitation.

The invention discloses a deep eutectic gel electrolyte as well as a preparation method and application thereof, and belongs to the field of battery materials. The deep eutectic gel electrolyte is prepared from the polymerizable deep eutectic solvent and an initiator. Wherein the polymerizable deep eutectic solvent is obtained by mixing and heating the following independently stored components: a hydrogen bond donor and a hydrogen bond acceptor, wherein the hydrogen bond acceptor is a metal salt; the hydrogen bond donor is butanedinitrile and a polymerizable monomer. The preparation method of the deep eutectic gel electrolyte comprises the following steps: mixing the raw materials under a certain temperature condition, fully stirring to obtain a gel electrolyte precursor solution, and initiating polymerization under an illumination condition to obtain the deep eutectic gel electrolyte. The gel electrolyte prepared by the method has relatively high ionic conductivity and a relatively wide electrochemical stability window, and the cycle life of a symmetric battery and a total battery assembled by the deep eutectic gel electrolyte is obviously prolonged. Meanwhile, the quasi-solid-state sodium-ion battery and the lithium-ion battery prepared by the method are simple in technological process, and commercial production is easy to realize.

The invention provides a zeolite imidazate framework fluorescent material and a preparation method and application thereof, and belongs to the technical field of detection material preparation and environment. Quantum dots, a molecular imprinting technology and an MOFs material are combined, firstly, Mg and N co-doped graphene quantum dots and ZIF-8 are compounded, then imprinting is carried out on the surface of ZIF-8, and the zeolite imidazate framework fluorescent material based on MOFs is obtained. In the zeolite imidazate framework fluorescent material, Mg and N co-doped graphene quantum dots not only have good fluorescence performance, but also can generate electron transfer with SDZ to form hydrogen-bond-like acting force, imprinted holes similar to a target object in size and shape are reserved in the surface of the imprinted material, and the target object needing to be detected can be selectively recognized; the zeolite imidazate framework fluorescent material can be used for detecting sulfadiazine in the environment and has good practicability.

The invention discloses a macromolecular antibacterial agent, an antibacterial nylon material as well as a preparation method and application thereof, and relates to the technical field of antibacterial macromolecular materials. According to the invention, lysine is used as a raw material, the polymer antibacterial agent is prepared through reactions such as dehydration ring formation and re-ring opening polymerization, the polymer antibacterial agent has the characteristics of high safety, biodegradability and good biocompatibility, and has the same polyamide main chain structure as nylon, the polymer antibacterial agent and nylon have good compatibility, and the polymer antibacterial agent and nylon 6 are fused and blended to form a nylon 6 sample. Through amide exchange reaction and hydrogen bond interaction between the macromolecular antibacterial agent and nylon 6 molecular chains, the antibacterial nylon material with excellent mechanical property and lasting and stable antibacterial effect is prepared, and the requirements of people for safety and environmental friendliness are met. The prepared antibacterial nylon material can be applied to antibacterial products such as textiles, daily necessities and packaging materials. Meanwhile, the macromolecular antibacterial agent and the antibacterial nylon material are simple in preparation process, low in raw material cost and suitable for industrial production.

The present invention relates to a preparation method of an intelligent self-repairing, flame-retardant and light-resistant water-based polyurethane coating. The method comprises the following steps: preparing a self-made hyperbranched flame retardant and using it in the synthesis of a polyurethane prepolymer; cooling the mixture to 58° C., adding 2,2-dimethylolpropionic acid, reacting the mixture for 1 to 2 hours, adding 1 to 2 parts of a disulfide compound, reacting the mixture for 1 to 2 hours at 60 to 80° C., adding 1 to 2 parts of a hydrogen bonding agent, reacting the mixture for 1 hour at 60 to 80° C., adding 0.5 to 1.5 parts of a coumarin derivative, and reacting the mixture for 60 to 90° C. The mixture was stirred for 1-2 hours, and then spiropyran, diethanol monoisopropanolamine, and 0.01 parts of p-toluenesulfonamide were added, and the mixture was reacted at 50°C for 30 minutes. The temperature was lowered to 40-45°C, and 1-2 parts of triethylamine were added, and the mixture was reacted for 1-2 hours. The mixture was cooled to room temperature, and 60-65 parts of water were added. The mixture was stirred at a speed of 1800-2000 r / min for 0.5-1 hour to obtain an intelligent self-healing, flame-retardant, and light-resistant water-based polyurethane coating. The flame retardancy and self-healing properties of the obtained water-based polyurethane were significantly improved.

A carbon-coated current collector. The carbon-coated current collector comprises a foil and a conductive coating arranged on the surface of the foil. The conductive coating comprises a combination of a modified conductive carbon material and a binder. The binder is prepared from the following raw materials in parts by weight: 40-60 parts of methyl isobutyl ketone, 25-30 parts of a solvent, 20-25 parts of isobornyl methacrylate, 20-25 parts of methyl methacrylate, 20-25 parts of n-butyl acrylate, 20-25 parts of hydroxyethyl acrylate, 18-22 parts of silicone oil, and 50-55 parts of an initiator. The modified conductive carbon material is a fluorosilane-modified carbon material. The modified conductive carbon material and the binder can form silanols by means of hydrolysis reaction of respective alkoxy groups, then the silanols form new hydrogen bonds with OH groups, and covalent bonds are formed on the surface of the carbon material, thereby forming a highly cross-linked network structure, which further enhances water resistance, allowing for the ability to withstand 200 or more wiping operations.

The invention discloses a high-toughness seawater low-temperature environment self-repairing epoxy coating as well as a preparation method and application thereof. The preparation method comprises the following steps: providing a modified epoxy adaptive network material; the modified epoxy adaptive network material is prepared from epoxy resin, polyol, diisocyanate and a monomer containing dynamic chemical bonds through a reaction. Providing a modified Ti < 3 > C < 2 > T < x > two-dimensional nanosheet; the modified Ti < 3 > C < 2 > T < x > two-dimensional nanosheet is obtained by modifying Ti < 3 > C < 2 > T < x >-MXene by using dopamine and a modifier containing a quadruple hydrogen bond motif; and mixing the modified epoxy adaptive network material with the modified Ti < 3 > C < 2 > T < x > two-dimensional nanosheets, and carrying out an interface ordered cross-linking reaction, so as to prepare the high-toughness seawater low-temperature environment self-repairing epoxy coating. The high-toughness seawater low-temperature environment self-repairing epoxy coating provided by the invention has multiple types of dynamic chemical bonds, has excellent properties of thermosetting resin and thermoplastic resin, and shows high toughness and self-repairing characteristics.

The invention discloses a deep-eutectic solvent for oil-containing solid waste treatment, an inorganic base and CO2 double-circulation oil-solid separation method based on the deep-eutectic solvent and the deep-eutectic solvent for oil-containing solid waste treatment. The deep-eutectic solvent for oil-containing solid waste treatment is characterized in that branched or cyclic short-chain fatty acid with pKa being 4-6 is used as a hydrogen bond donor; a phenol derivative with pKa being 9-11 or C6-C8 straight-chain alcohol is used as a hydrogen bond acceptor; the ratio of the hydrogen bond donor to the hydrogen bond acceptor is (5: 1)-(1: 5) according to the molar ratio of the hydrogen bond donor to the hydrogen bond acceptor; the regulation and control method based on the deep-eutectic solvent comprises the following steps: (1) reacting inorganic alkali with the deep-eutectic solvent to form a hydrophilic carboxylate and phenate solution; (2) after CO2 is introduced, fatty acid / phenols are collected to form a hydrophobic deep-eutectic solvent again, and meanwhile, a bicarbonate aqueous solution is obtained; and (3) heating the bicarbonate aqueous solution or introducing N2, removing CO2, and forming hydrophilic carboxylate and phenolate again by the eutectic solvent in the formed alkaline carbonate solution. According to the inorganic base and CO2 double-circulation oil-solid separation method based on the eutectic solvent, the eutectic solvent can be recycled.

The invention belongs to the field of olefin polymers, and relates to a reversible cross-linked polyolefin elastomer and a preparation method thereof. The reversible cross-linked polyolefin elastomer is a reversible cross-linked polyolefin elastomer in which a cross-linked network is formed through three non-covalent bonds, namely hydrogen bonds, ionic bonds and coordinate bonds, and the hydrogen bonds and the cross-linked bonds account for 0.1-85% by taking the sum of the three non-covalent bonds, namely the hydrogen bonds, the ionic bonds and the coordinate bonds as 100%; the ionic crosslinking bond accounts for 0.5-90%; and the coordination crosslinking bond accounts for 9-99%. Compared with a reversible cross-linked polyolefin elastomer in the prior art, the reversible cross-linked polyolefin elastomer prepared by the invention contains hydrogen bonds, ionic bonds and coordinate bonds at the same time, and a synergistic effect is generated through combination of reversible cross-linked interaction of the coordinate bonds, the hydrogen bonds and the ionic bonds; therefore, the material has excellent physical and mechanical properties and also has recoverability and self-repairability.

The invention relates to the technical field of liquid-liquid homogeneous microextraction, in particular to a method for microextraction analysis of perfluorooctanoic acid by using a switchable eutectic solvent. Comprising the following steps: step 1, mixing a hydrogen bond acceptor and a hydrogen bond donor according to a set proportion value, and stirring and mixing at a set temperature value to obtain a eutectic solvent; step 2, filtering the water sample through a water-based filter membrane, then adding a set amount of deep eutectic solvent, dropwise adding an alkaline solution, carrying out full vortex mixing through a mixer, and then adding an acidic solution to form an emulsion; according to the method, the high selectivity of the green solvent with a specific structure on perfluorooctanoic acid and the characteristic that the solvent is switched between hydrophilic and hydrophobic forms are utilized, so that the microextraction time is shortened, and the impurity removal and enrichment effects are enhanced. The method is simple and convenient to operate, green, environment-friendly, low in cost and good in effect, has the advantage of efficiently and rapidly pretreating the batch small-size complex matrix sample, and has a relatively good application prospect.

The invention discloses a eutectic solvent for promoting ultrahigh dissolution of curcumin and a preparation method of the eutectic solvent, relates to the technical field of chemical preparations, and aims to solve the technical problem of relatively low solubility of curcumin in a solvent in the prior art. The preparation method of the eutecticevaporate solvent for promoting ultrahigh dissolution of curcumin comprises the following steps: mixing a hydrogen bond donor, a hydrogen bond acceptor and other components, and heating to a first preset temperature to obtain a clear and transparent eutecticevaporate solvent; and heating the eutectic solvent to a second preset temperature, adding curcumin powder, carrying out rapid vortex dissolution, centrifuging, and collecting a supernatant to obtain a clear and transparent high-solubility curcumin solution. According to the method, the green solvent is adopted as a medium, no additional substance needs to be added, operation is easy and convenient, the solubility of the curcumin is remarkably improved, and therefore the application range of the curcumin in the fields of cosmetics, food and pharmacy is expanded.

The invention relates to a high-performance room-temperature self-repairing polyurethane elastomer and a preparation method thereof.The polyurethane elastomer is synthesized from diisocyanate containing asymmetric aliphatic rings, polyether glycol or polyester glycol and a dynamic hydrogen bond chain extender, linear and non-linear hydrogen bonds exist in a polyurethane molecular chain at the same time, and the linear and non-linear hydrogen bonds are different from each other. The existence of the linear hydrogen bonds endows the material with good mechanical properties, the non-linear hydrogen bonds also enable the polyurethane elastomer to maintain the strength and realize the self-repairing effect at room temperature, and the high steric hindrance of the asymmetric aliphatic ring structure can inhibit the crystallization of the polyurethane chain segment, thereby enhancing the transparency of the polyurethane. Compared with the prior art, the polyurethane elastomer prepared by the invention has excellent tensile property, tensile strength of more than 30MPa, fracture strain of more than 1000%, good self-repairing property, repair efficiency of more than 80% after repairing for 48 hours at room temperature under the assistance of trace water, and good transparency.

The invention discloses multifunctional acetylene carbon black as well as a preparation method and application thereof. The preparation method comprises the following steps: blending triethylenetetramine hexaacetic acid and acetylene carbon black in a mass ratio of (0.05-0.5): 100, and then carrying out esterification reaction under a vacuum condition, thereby obtaining the multifunctional acetylene carbon black. The preparation method comprises the following steps: modifying acetylene carbon black by adopting triethylenetetramine hexaacetic acid, and carrying out esterification reaction on triethylenetetramine hexaacetic acid with six carboxyl functional groups and acetylene carbon black with a hydroxyl functional group, so that the acetylene carbon black is modified, and the acetylene carbon black becomes multifunctional acetylene carbon black. The acetylene carbon black modified with a large number of carboxyl groups and amide groups on the semiconductive wrapping tape form rich hydrogen bonds, so that the compatibility of the acetylene carbon black and the semiconductive wrapping tape is improved.

The invention relates to the technical field of batteries, and particularly discloses a current collector, a method for preparing the current collector, a pole piece, a lithium ion battery and a power utilization device.The current collector comprises a base material and a conductive coating arranged on at least one side of the base material, and physical crosslinking points are evenly distributed in the conductive coating; the physical cross-linking points are non-covalent bond connecting points and comprise coordinate bonds between the binder and metal ions and / or hydrogen bonds between the binder and the polyhydroxy compound. The physical cross-linking points can effectively improve the adaptability of the conductive coating to the expansion and shrinkage stress of the active material layer in the long-term circulation process, the physical cross-linking points can be self-generated again after being damaged, the cross-linking structure improves the adhesion strength of the conductive coating to the current collector, meanwhile, the conductive coating has excellent fatigue resistance, and the service life of the conductive coating is prolonged. After long-term circulation, the high cohesiveness is still kept, and the phenomena of interface separation and active substance powder falling are not prone to occurring.

The invention belongs to the technical field of membrane material preparation and water treatment, and discloses a La-MOF-COOH / AO-PAN composite membrane material and a preparation method and application thereof, and the preparation method of the membrane comprises the following steps: preparing a PAN membrane; preparing an AO-PAN membrane; the preparation method comprises the following steps: preparing La-MOF-COOH; and the preparation of the La-MOF-COOH / AO-PAN film is carried out. The composite membrane material is composed of modified polyacrylonitrile fibers, metal lanthanum and an organic ligand. Amino groups and hydroxyl groups in amidoximated PAN participate in hydrogen bonds and covalent interaction, so that the interfacial compatibility and stability of La-MOF-COOH and AO-PAN are improved, agglomeration of La-MOF-COOH filler is avoided, the structural uniformity, stability and functionality of the La-MOF-COOH / AO-PAN composite membrane are improved, and the composite membrane has a good application prospect.

The invention discloses a preparation method and application of an ammonium ion pre-embedded Cu-MOF derived CuHCF / MXene electrode material, and relates to the technical field of new energy nanometer materials. According to the preparation method, Cu-BTC is taken as a sacrificial template, ammonium ion pre-embedding and flaky MXene compounding are carried out, and synthesis is carried out under the condition of coprecipitation at room temperature. The preparation method provided by the invention is low in cost and simple in process, and the obtained electrode material is excellent in morphology and performance. When the prepared CuHCF / MXene composite electrode is applied to capacitive deionization, the characteristic of high NH4 < + > adsorption capacity is shown. According to the preparation method, hydrogen-bond interaction is formed between H atoms in NH4 < + > and N atoms in CuHCF, so that the NH4 < + > adsorption potential energy is reduced, the adsorption capacity is improved, and meanwhile, the defects that CuHCF is prone to agglomeration, poor in conductivity and the like are overcome through self-assembly of the CuHCF and MXene.

The invention discloses a low-temperature zinc ion battery high-entropy eutectic electrolyte and a preparation method and application thereof, and relates to the field of batteries, the electrolyte comprises a hydrogen bond donor, a hydrogen bond acceptor and a solvent; the hydrogen bond donor is at least one of methyl sulfonamide, thioformamide, butyramide, asparagine, tert-butylamine, dimethyl propane diamine, oxalyl diamine, benzamide, sulfamide and ethyl sulfonamide; the hydrogen bond receptor is at least one of aspartic acid, glutamic acid, methionine, zinc chloride, zinc perchlorate, zinc fluoborate and zinc acetate; the preparation method comprises the following steps: mixing a hydrogen bond donor and a hydrogen bond acceptor, and heating to convert a solid into a liquid phase; and adding a solvent, and uniformly mixing to obtain the product. The invention also provides a zinc ion battery containing the electrolyte. The high-entropy eutectic electrolyte has the beneficial effects that-NH2 and halogen or carboxyl form hydrogen bonds to perform eutectic reaction, the freezing point of the eutectic solution is lower than that of a reactant, and the solvent is added to improve the confusion degree of the electrolyte, so that the high-entropy eutectic electrolyte is prepared.

According to the method, a one-pot copolymerization method is adopted, MBAA and borax serve as cross-linking agents, zwitterionic polyelectrolyte hydrogel containing SBMA, PVA, THMA and AMPS is prepared, and the zwitterionic polyelectrolyte hydrogel has excellent adhesion performance and biocompatibility and is suitable for the field of biological medicine. According to the method, the physical characteristics of the hydrogel are enhanced due to crosslinking sites and hydrogen bonds of polyvinyl alcohol. The cationic and anionic groups of SBMA improve the adhesion performance, and the reaction monomer THMA provides hydrogen-bond interaction to further promote adhesion, so that the prepared hydrogel adhesive shows excellent adhesion performance and biocompatibility, and is suitable for biological medicine application of wound dressing, drug release systems, tissue engineering and the like.

The invention relates to a CMP (chemical mechanical polishing) composition for obtaining a high-quality SiC single crystal substrate surface. The CMP composition is prepared from the following raw materials in percentage by weight: 20-50 wt% of a polishing abrasive, 3-5 wt% of an oxidizing agent, 0.1-0.5 wt% of a surfactant, 0.2-0.5 wt% of a hydrogen bond regulator, 0.2-1 wt% of a polishing accelerant, 0.01-0.05 wt% of a defoaming agent and the balance of water, the CMP composition is neutral. According to the CMP composition, silicon oxide is adopted as a grinding material, a hydrogen bond regulator, a polishing accelerant and an oxidizing agent are introduced, the CMP polishing rate of a silicon carbide wafer is increased, the surface roughness Ra of the cleaned silicon surface can reach 0.07 nm or below, the cleaned surface is free of large particles (larger than 0.2 micron), meanwhile, the silicon oxide raw material does not need to be treated, and the CMP composition has excellent long-term storage stability; and the system does not have particle aggregation and sedimentation phenomena along with the prolonging of the storage time, and excellent polishing surface quality can be obtained in the subsequent polishing process.

The invention relates to the technical field of fluorescence sensing, in particular to a preparation method and application of an Nd (III)-based hydrogen bond organic framework crystalline material. According to the Nd (III)-based hydrogen bond organic framework crystalline state material, Nd (III) serves as a central metal ion and is coordinated with 9 oxygen atoms, and adjacent Nd (III) are connected through H2 (4-CPCA) ligands to form a one-dimensional chain structure. One-dimensional chains are bridged through H2 (4-CPCA) ligands to form a two-dimensional double-layer planar structure, and two-dimensional surfaces are further stacked through the interaction of a large number of intermolecular hydrogen bonds to form a three-dimensional supramolecular structure. The Nd (III)-based hydrogen bond organic framework crystalline material has good fluorescent property and stability, and can be applied to the field of fluorescence sensing.

The invention discloses an inorganic-organic hybrid compound crystal and a preparation method thereof, and belongs to the technical field of organic-inorganic hybrid materials. The preparation method comprises the following steps: mixing raw materials containing hydroiodic acid, organic cage molecules RCC3 and a lead source with a solvent, and carrying out solvothermal reaction to obtain the inorganic-organic hybrid compound crystal. The chemical formula of the prepared inorganic-organic hybrid compound crystal is ({H18 [C72H108N12] 2 [(Pb10I36)]}. 2I), wherein [C72H108N12] is RCC3 acidified by hydroiodic acid, the crystal has a supramolecular three-dimensional structure assembled by a [Pb5I8] 3-anion cluster unit and a protonated RCC3 molecular cage through electrostatic and hydrogen-bond interaction, and belongs to a monoclinic system, and the space group is P21. The crystal structure is a metal halide-based organic-inorganic hybrid crystal constructed by taking an organic molecular cage as nitrogen-containing cations and lead iodide for the first time.

The invention discloses a coated reflecting film based on an organic fluorescent coating and a preparation method of the coated reflecting film, tetra (4-aminophenyl) methane and tetra-(4-formyl-(1, 1-biphenyl)) ethylene are used as reaction monomers to prepare a novel topological structure [4 + 4] COF (3D-TPE-COF) with a tetraphenylethylene (TPE) unit, and the novel topological structure [4 + 4] COF (3D-TPE-COF) is used for preparing the reflective film based on the organic fluorescent coating. The covalent organic framework material 3D-TPE-COF is added into coating liquid as a fluorescent material to prepare a coating reflecting film based on an organic fluorescent coating, and the obtained reflecting film can convert high-energy blue light, so that the brightness of light emitted by a backlight module is higher and closer to white; meanwhile, the 3D-TPE-COF fluorescent material and the polymer particles can form hydrogen bonds in the coating liquid to avoid aggregation of the polymer particles, so that the wear resistance and scratch resistance of the coating reflecting film are improved.