42results about How to "Less prone to phase separation" patented technology

The invention provides a cellulose-based flexible heat storage composite material and a preparation method thereof, and the preparation method comprises the following steps: uniformly mixing an oil phase and a water phase to obtain an oil-in-water type high internal phase emulsion, wherein the oil phase is an organic phase change material, the water phase comprises a water-soluble emulsifier, a cellulose suspension and water; adding a cross-linking agent and a catalyst into the oil-in-water type high internal phase emulsion, realizing interfacial polymerization of the cellulose emulsion through heating, forming a cross-linked polymer at an interface, and obtaining the heat storage composite material through heating drying and freeze drying. The appearance of the heat storage composite material can be controlled through a mold for containing the high internal phase emulsion during polymerization, a nanofiber structure is arranged in the heat storage composite material, the heat storage density of the material after heating and drying can reach 200 J/g, the heat storage density of the material after freeze drying can reach 250 J/g, and the heat storage composite material has flexibility, can be curled and folded at the room temperature and the temperature of 40 DEG C or above and is good in heat conduction performance.

The invention discloses graphene heating ink, a preparation method and application thereof. The graphene heating ink comprises a resin matrix, conductive filler, an assistant and a solvent, wherein the conductive filler comprises graphene, the resin matrix is composed of an organic polymer and polysilazane in a mass ratio of 1:0.08-1.5, and the graphene heating ink further comprises a cross-linking agent; the preparation method comprises the following steps of: stirring and dispersing graphene in a powder form and polysilazane in a polysilazane solution form for fully mixing, and then adding the rest raw materials under stirring to obtain the graphene heating ink. The invention also relates to an electric heating film prepared from the ink, on the premise that excellent conductivity at a low temperature is guaranteed, the characteristic that the resistance is greatly improved at a high temperature is achieved, then self-temperature-limiting is achieved, meanwhile, when the electric heating film returns to a normal temperature, the resistance value of a material is not greatly changed, and reversibility is good, therefore, the recycling performance and the safety of the electric heating film are improved.

The invention provides a blood fat adsorbent and a preparation method thereof. The method comprises the following steps: firstly, carrying out activation reaction on an adsorption carrier to obtain anepoxy group-containing activated carrier; then adding a blood fat adsorption ligand into a glycine-sodium hydroxide buffer solution to obtain a ligand solution; mixing the obtained epoxy group-containing activated carrier with a tertiary amine reagent, then adding the mixture into a ligand solution, mixing and stirring to carry out a coupling reaction, and after the reaction is completed, carrying out solid-liquid separation, cleaning and drying to obtain the blood fat adsorbent. According to the invention, the tertiary amine reagent is added into the coupling reaction system, the tertiary amine reagent is firstly adsorbed on the surface of the epoxy group-containing activated carrier, and then the coupling reaction is carried out in the glycine-sodium hydroxide buffer solution ligand solution, so that the coupling reaction efficiency and the ligand utilization rate can be improved, the adsorption efficiency of the adsorbent is improved, and the production cost is reduced.

The invention discloses a preparation method of a radiation-proof antibacterial fabric. The preparation method comprises the steps of: S1, preparation of a 4-(2-thienyl)-3-ene-2-butanone/5-ethylene-2-thiazole amine/limonene-1 2-epoxide/bis(triethoxysilyl)ethylene copolymer; S2, preparation of a thieno[3, 2-b]thiophene-3, 6-dicarboxylic acid/amiphenazole polycondensate; S3, preparation of a fiber yarn; and S4, weaving and after-finishing. The invention further discloses the radiation-proof antibacterial fabric prepared according to the preparation method of the radiation-proof antibacterial fabric. The radiation-proof antibacterial fabric disclosed by the invention is good in ultraviolet aging resistance and flame retardance, remarkable in radiation-proof, antibacterial and antistatic effects, excellent in air permeability and moisture absorption performance, and excellent in wearing comfort and performance stability.

The invention relates to the technical field of phase change energy storage materials, and particularly discloses a preparation method of a mirabilite-based solid-liquid composite phase change energy storage material. The preparation method comprises the following steps: S1, uniformly mixing graphene oxide and cuprous oxide powder according to a mass ratio of 1-2: 1, adjusting the pH value to 10.5, and carrying out a hydrothermal reaction to obtain modified nano graphene composite cuprous oxide hydrogel; S2, cleaning the modified nano graphene composite cuprous oxide hydrogel, and freeze-drying the modified nano graphene composite cuprous oxide hydrogel to obtain block-like modified nano graphene composite cuprous oxide aerogel; S3, preparing a mirabilite-based phase change material; and S4, cutting the modified nano graphene composite cuprous oxide aerogel into a proper size, and adsorbing and shaping the mirabilite-based phase change material by adopting dipping and suction filtration technologies in sequence. The preparation method provided by the invention has the advantages that the problems of super-cooling degree and phase stratification of the mirabilite phase change energy storage material are solved, and the service life of the phase change energy storage material is prolonged.

The invention provides a method for preparing a moth-proof and mildew-proof material for financial management cabinets, including chitosan quaternization, ion exchange, preparation of quaternized chitosan grafted acrylonitrile hydrolyzate and moth-proof and mildew-proof material preparation and other steps; the preparation method of the moth-proof and mildew-proof material for the financial management cabinet provided by the present invention is simple and easy, with low cost, and can prevent moth and mildew at the same time. The effect is excellent, and at the same time, it can also absorb water. Putting it in the cabinet can make the environment inside the cabinet dry and play the role of moisture-proof, which has a good market application prospect.

The invention discloses a cosolvent for methanol gasoline in the technical field of cosolvents for methanol gasoline. The cosolvent is prepared from the following raw materials in parts by weight: 50 to 70 parts of fatty acid ester sulfonate, 10 to 15 parts of methylbenzene, 8 to 15 parts of xylene, 0.3 to 0.5 part of 2, 5-furandicarboxylic acid, 10 to 15 parts of oleic acid, 8 to 10 parts of ethylene glycol, 10 to 20 parts of isopropanol, 50 to 60 parts of additive solution and 1 to 5 parts of magnetic catalyst. According to the invention, beeswax and grape skin are used as basic fermentation raw materials for fermentation, fatty acid methyl ester is added into the fermentation raw materials to serve as an induction factor, and substances such as alcohol lipids are generated in the fermentation process by utilizing strains. Meanwhile, the grape skin is easy to generate methanol in the fermentation process, organic matters with dissolution stability on methanol in fermentation products are extracted, and meanwhile, beewax is decomposed in the fermentation process, so that active substances are generated, and the dispersing performance of methanol in gasoline is promoted.

The invention relates to a reaction type inhibitor and a preparation method thereof, the structural formula of the reaction type inhibitor is shown in the following formula (1), R1 comprises at least one of alkane, cycloalkane and aryl, R2 is alkylene, R3 is -(CH2) n-, n is an integer of 0-4, R4 is one of -(CH2)n-, x and y are integers, and the sum of x and y is less than or equal to 20000. The invention also relates to a silicone rubber composition, silicone rubber and a preparation method thereof. The reactive inhibitor is mainly used in the silicone rubber composition, so that the activity of a noble metal catalyst is reduced, the controllability of hydrosilylation reaction is enhanced, and the operable time of the silicone rubber composition is prolonged; and in addition, the reactive inhibitor can also form a uniform molecular cross-linked network structure with the silicone rubber to become a part of the silicone rubber, so that the reactive inhibitor cannot migrate out of the silicone rubber to pollute a silicone rubber product.