The invention relates to a thermal conductivity enhanced organic composite shaped phase change material and a preparation method thereof, and belongs to the technical field of new materials. The thermal conductivity enhanced organic composite shaped phase change material is characterized in that the composite shaped phase change material is prepared from, by mass, 1-50% of coordination cross-linking network polymer, 40-98.9% of organic solid liquid phase change material and 0.1-10% of thermal conductivity enhancer, wherein the coordination cross-linking network polymer is prepared by coordination complexation of a polymer compound with metal ions. The material has a simple synthesis process, convenient application, a large phase change enthalpy value and an excellent shaping effect, and liquid leakage does not occur during operation. The material has a simple synthesis process, convenient application and broad application prospects in the field of thermal energy storage and management.

Thermal conductivity enhanced organic composite shaped phase change material and preparation method thereof

The invention discloses a ZnO@ZIF-8 core-shell structure microsphere and a preparation method thereof. The core-shell structure microsphere is formed by ZnO and ZIF-8, wherein ZnO is adopted as a core, ZIF-8 is adopted as a shell, the diameter of the spherical ZnO core is 250 to 300 nm, the surface of the spherical ZnO core is a rough surface, the thickness of the ZIF-8 shell is 40 to 60 nm, the ZIF-8 shell is formed by a block-shaped polygonal body, and the specific surface area of each microsphere is more than or equal to 300m /g. The preparation method comprises the following steps: adding dihydrate zinc acetate into diethylene glycol at a weight ratio of (3.5-7.5): 250 to obtain a mixture, refluxing the mixture for at least 1h under the temperature of 140 to 180 DEG C to obtain a reaction liquid, after the reaction liquid is cooled to the room temperature, sequentially carrying out solid-liquid separation, washing and drying treatment on the reaction liquid to obtain spherical ZnO, then adding the spherical ZnO into 3.16 to 4.16 mol/L of 2-methylimidazole solution at a weight ratio of (0.008-0.012): (2.5-2.9) to obtain a mixed solution, standing and aging the mixed solution for 8 to 60 minutes, sequentially carrying out solid-liquid separation, washing and drying treatment on the mixed solution to obtain a target product. The ZnO@ZIF-8 core-shell structure microsphere is good in dispersing property and relatively large in specific surface area and can be widely applied to the fields such as gas storage, separation and catalyzing.

ZnO@ZIF-8 core-shell structure microsphere and preparation method thereof

The invention discloses a preparation method of a basic copper sulfate/metal organic framework core-shell microsphere, and belongs to the technical field of advanced nano composite preparation. The preparation method of the basic copper sulfate/metal organic framework core-shell microsphere comprises the steps that a basic copper sulfate microsphere in a core-shell structure is prepared; a shell layer of the basic copper sulfate microsphere is converted into a metal organic framework material in situ; and the basic copper sulfate/metal organic framework core-shell microsphere is prepared. The preparation method has the advantages that 1) the basic copper sulfate/metal organic framework core-shell microsphere is prepared by a simple two-step method at a room temperature; 2) different metal organic framework shell layers can be prepared by adjusting the kind of added organic ligands by using the basic copper sulfate microsphere prepared by the method; and 3) the method is mild in reaction condition, simple in technology and short in period, and is suitable for industrial production.

Preparation method of basic copper sulfate/metal organic framework core-shell microsphere

The invention provides a preparation method of a high-temperature-resistant silicon oxide aerogel material. Through sol preparation, gelatinization and aging, hydro-thermal treatment, solvent replacement and supercritical drying, the high-temperature-resistant silicon oxide aerogel material is obtained. Wet gel is subjected to hydro-thermal treatment; in the hydro-thermal process, a gel network is further completed; the particle diameter of gel particles is increased from 10 to 15nm to 20nm or more; the combination between the particles is tight, so that the surface energy of the aerogel nanometer particles is reduced; the temperature-resistant performance of the aerogel is obviously improved.

Preparation method of high-temperature-resistant silicon oxide aerogel material

The invention belongs to the technical field of glass material modification and application, and discloses a preparation method of flat glass with anti-glare and anti-reflection functions. The disclosed preparation method of flat glass with an anti-glare and anti-reflection functions comprises the following steps: mixing water, polyol, a complexing agent and alkali in a molar ratio of 55.6:(0.06-0.1):(0.001-0.015):(0.4-1.3) to prepare chemical etching composite liquid; and cleaning a to-be-treated glass substrate with a cleaning agent, washing the glass substrate with deionized water, placingthe glass substrate in the chemical etching composite liquid, and carrying out a chemical reaction at a temperature of 110 DEG C for 10 hours. The preparation method provided by the invention realizeslarge-area glass anti-reflection, the cost is low, the glass has an anti-glare function and the visible light transmittance of the glass can be improved by 6% or more.

Preparation method of flat glass with anti-glare and anti-reflection functions

The invention relates to a preparation method of a metal organic framework coated phase-change material microcapsule. The method comprises the steps that a basic copper sulfate microsphere in a hollow structure or a yolk/shell structure is prepared; a shell layer of the basic copper sulfate microsphere is assembled by nano sheets; a gap is formed between every two nano sheets; a phase-change material can enter the microsphere through the gaps of the shell layer of the basic copper sulfate microsphere; the shell layer is converted into a metal organic framework material in situ; a dense metal organic framework material shell layer is formed; the phase-change material is encapsulated and dried; and then the metal organic framework coated phase-change material microcapsule is prepared. The method has the advantages that 1) a novel metal organic framework coated phase-change material microcapsule is developed; 2) the prepared metal organic framework coated phase-change material microcapsule can effectively avoid leakage, corrosion and the like, and improve the heat conductivity of a composite; and 3) the method is mild in reaction condition, simple in technology and short in period, and is suitable for industrial production.

Preparation method of metal organic framework coated phase-change material microcapsule

The invention discloses a preparation method of hierarchical-pore silica-based composite aerogel, which relates to the field of inorganic materials. The preparation method comprises the following steps of: adding a treated mesoporous silica molecular sieve to a precursor solution for obtaining a colloidal sol, then adding a catalyst so that the colloidal sol gels, and finally carrying out supercritical drying/modification and ambient pressure drying to prepare the hierarchical-pore silica-based composite aerogel material. The preparation method has the advantages that (1) the hierarchical-pore silica-based composite aerogel material is prepared by a supercritical drying or ambient pressure drying method; (2) the hierarchical-pore silica-based composite aerogel material prepared by the method provided by the invention is uniform in microstructure and has high strength, good insulation performance, low density and high specific surface area; and (3) the method provided by the invention is simple in preparation technology, mild in reaction conditions and suitable for industrial production.

Preparation method of hierarchical-pore silica-based composite aerogel

Method for preparing yolk/shell structured basic copper sulfate

The invention discloses a preparation method of sisal hemp-shaped CuO-ZnO composite oxide, and belongs to the technical field of inorganic functional material preparation technology and high-energy solid propellants. The preparation method comprises the following steps of: adding an amine chelating agent into a mixed solution of soluble copper salt and zinc salt at first to form a chelate solution; fully chelating metal ions and the chelating agent by stirring; adding an alkali metal hydroxide solution into a reaction system; controlling reaction temperature to obtain a composite oxide precipitate; and filtering, washing and drying to obtain CuO-ZnO composite oxide having a sisal hemp structure. The preparation method has the advantages that the CuO-ZnO composite oxide for ammonium persulfate (AP) catalysis is prepared; the CuO-ZnO composite oxide prepared by using the provided method has a novel structure and is sisal hemp-shaped; the high-temperature decomposition temperature is reduced to 120 DEG C, and the oxide is high in performance; and the method provided by the invention is simple in reaction process, mild in conditions, short in procedures and suitable for industrial production.

Preparation method of sisal hemp-shaped CuO-ZnO composite oxide

The invention relates to a method for preparing Beta-amino ester through copper-catalyzed three-component coupling reaction. The method is the method for synthesizing the Beta-amino ester with high efficiency and high yield, which successfully realizes efficient catalysis of the three-component coupling reaction by utilizing a plurality of copper salts. The method comprises the following steps of: dissolving 0.005 to 0.10 parts by mol of copper catalyst into 1 to 5mL solvent; adding 0.5 to 10 parts by mol of borane; adding 0.5 to 10 parts by mol of diazoester; finally adding 0.5 to 10 parts by mol of imine; and reacting for 1 to 24 hours at 20 to 40 DEG C, thus obtaining the Beta-amino ester. Compared with the existing method, the method provided by the invention has the advantages of being mild in reaction condition and low in price; and the catalytic system has high yield, product selectivity and diastereoselectivity. Compared with the conventional method, the method provided by the invention greatly increases the yield, decreases the amount of after-treatment steps and shows complete selectivity respect to a Beta-amino ester product.

Wang Ge

Papers

Preparation method of metal organic framework coated phase-change material microcapsule

Preparation method of hierarchical-pore silica-based composite aerogel

Method for preparing yolk/shell structured basic copper sulfate

Preparation method of sisal hemp-shaped CuO-ZnO composite oxide

Method for preparing Beta-amino ester through copper-catalyzed three-component coupling reaction