323results about How to "The preparation method is simple and quick" patented technology

The invention relates to the field of a test method and a test device and particularly relates to a sample shelf and a test method for an X-ray diffraction in-situ test. The sample shelf comprises a sample shelf base frame with a sample slot, a positioning plate, a charge-discharge test channel and a conducting wire, wherein the positioning plate is jointed on the sample shelf base frame; the charge-discharge test channel is riveted on the sample shelf base frame; and the conducting wire is welded on the charge-discharge test channel. In the sample shelf provided by the invention, an X-ray powder diffractometer is free from any structural reformation or an operation of adding a functional component, and a polymeric membrane material, which is environmentally-friendly, non-toxic, easily obtained and simply processed, is used as an X-ray transmission window as well as a packaging material of a sample core, thereby realizing the observation and monitoring for crystal structural change of a cathode active material and an anode active material under different voltages during a charge-discharge process and a process of repeating for different times on the basis of preparing the sample core for the X-ray diffraction in-situ test.

The invention discloses a nano-silver/graphene composite material and a preparation method thereof. The nano-silver/graphene composite material is synthesized through the supercritical carbon dioxide (ScCO2) assisted chemical deposition method. Firstly, a silver-ammonia solution is added into reductive alcohol, and an appropriate amount of a surfactant and a complexing agent are dissolved in the reductive alcohol; afterwards, graphene oxide powder is added, and homogeneously dispersed suspension liquid is obtained after ultrasonic dispersion; then a reducing agent is added, mixed liquid is quickly transferred into a reaction kettle, CO2 gas is pumped into the reaction kettle, the reaction kettle is heated to reach set pressure and a set temperature, and at the moment, the CO2 is in a supercritical state; and after a mixed solution is stirred and reacted for a period, cooling and pressure relief are carried out, and the nano-silver/graphene composite material is obtained after repeated centrifugal cleaning and drying. The preparation method is environmentally friendly, and the prepared nano-silver/graphene composite material has the characteristics that the phase is singular, the load capacity is controllable, and nano-silver is small in grain size and evenly distributed between graphene nanosheet layers.

The invention provides a binding agent for powder injection moulding, a preparation method of the binding agent and an application method of the binding agent. The binding agent is mainly prepared from the following components in percentage by mass: 65 to 75 percent of polyformaldehyde, 4 to 9 percent of dioctyl phthalate, 6 to 13 percent of polyethylene, 1 to 3 percent of acrylate copolymer, 3 to 8 percent of polyacrylamide, 1.5 to 4 percent of paraffin, 2 to 6 percent of microcrystalline wax and 0.5 to 2 percent of ethylene vinyl acetate copolymer. In the binding agent provided by the invention, multiple types of components are combined through scientific compatibility, so that the compatibility between metal powder or ceramic powder and the binding agent can be obviously improved, and meanwhile, the binding agent can be quickly removed in a degreasing process without causing the defects of bubbling and cracking of a green body, so as to guarantee the quality of the green body.

The invention discloses a preparation method for a paper-based micro-fluidic chip. The trimethoxy silane is processed in a heptane solution to obtain a hydrophobic base. Meanwhile, patterns printed on the channel of a piece of filter paper are cut, and then are immersed in cetyl trimethyl ammonium bromide to obtain a hydrophilic base. The above hydrophobic base and the above hydrophilic base are bonded together to form a hydrophilic and hydrophobic access. Compared with the traditional method, the above preparation method is free of any expensive instrument/agent/metal mold, thus being novel, simple, quick, low in cost and short in production period. The entire preparation process can be completed within 7 minutes.

The invention discloses a fractal acoustic metamaterial based broadband acoustic focusing lens and a preparation method thereof. The broadband acoustic focusing lens comprises a base material and a fractal structure unit array located on the base material. The fractal structure unit array is formed by arranging a plurality of fractal periodic units, and each fractal periodic unit corresponds to a refraction point of the focusing lens. The fractal period unit comprises a fractal unit and air, and a refractive index of the fractal unit corresponding to any refraction point conforms to a theoretical refractive index of the refraction point. According to the invention, the fractal units are adopted for the first time to form the acoustic focusing lens, thereby providing a new way for designing a new material for the acoustic engineering. The actual path length of spreading of acoustic waves in a unit structure is increased in a fractal mode, and the refractive index of the unit structure is improved. The acoustic focusing lens disclosed by the invention has a broadband characteristic, and can realize a good focusing effect of the acoustic waves in the scope of a broad band.

The invention provides a chitosan-nanofiber hemostatic material and a preparation method thereof. The chitosan-nanofiber hemostatic material is a core-shell nanofiber, wherein chitosan forms the shell of the nanofiber, polyvinyl alcohol forms the core of the nanofiber, and the diameter of the core-shell nanofiber is 100nm-20Mum. According to the invention, a coaxial electrospinning technology is adopted to prepare the nanometer material with a chitosan-polyvinyl alcohol (CS-PVP) core-shell structure, and the nanometer material has high chitosan content and a high specific surface and is used for hemostasis on living organisms. Experiments prove that the chitosan-polyvinyl alcohol nanofiber, provided by the invention, has good biocompatibility and excellent hemostasis performance, reserves the good water-absorption and fiber forming property of a PVP material, combines the excellent antibacterial hemostasis performance of a CS material, and can be clinically used for wound hemostasis. The preparation method is simple and fast, and has high efficiency.

The invention discloses a preparation method and application of a three-dimensional porous electrode material. The preparation method comprises the following steps of: respectively dissolving aniline and an oxidant into acidic aqueous solution to obtain aniline solution and oxidant solution; dipping a loofah sponge into the aniline solution; dropping the oxidant solution into the aniline solution at 0 to 4 DEG C in order to implement oxidative polymerization until the loofah sponge is green; taking out the loofah sponge, and drying; and carbonizing the loofah sponge at an anaerobic condition, thus obtaining the three-dimensional porous electrode material. The three-dimensional porous electrode material prepared by the preparation method disclosed by the invention has the advantages that the specific surface area is large, the activity of the electrode material is high, the preparation method is simple and quick, and the cost is low; the three-dimensional porous electrode material can be applied to a microbial fuel cell; and compared with the conventional plate electrode, the three-dimensional porous electrode material has the advantages that the activity peak current value in the reaction of a microbial electrode is increased by more than four times, and the power density of a cell is increased by more than 2.5 times.

The invention discloses an environmentally-friendly cleaning agent, which comprises the following raw materials in part by weight: 1 to 10 parts of organic acid, 50 to 60 parts of vegetable oil, 3 to 16 parts of potassium hydroxide, 2 to 10 parts of coconut oil, 1 to 10 parts of compatibilizer, 1 to 10 parts of glycerin, 1 to 5 parts of phospholipids and 10 to 600 parts of water. The invention stresses on producing a product with economy, good cleaning effect and excellent environmental safety. Compounds such as methylene dichloride, chlorine compound solvents, halogen solvents and chemicals such as arene and the like with destructive performance on an ozone layer are not used; only environmentally-friendly natural components are used; and the environmentally-friendly water-soluble cleaning agent with good cleaning effect is provided. Moreover, in order to maintain the cleaning performance and the rinsing performance of a surfactant, the phospholipids and the coconut oil are used so as to improve the performance of the cleaning agent; and secondary pollution of water is prevented by using the degradable chemicals.

The invention discloses an ice-crack-shaped polished crystal tile comprising a ceramic tile blank, a coloured glaze layer, an ice crack layer and a transparent frit layer, wherein the coloured glaze layer comprises the following components in percentage by mass: printing glaze, glaze pigment, kaolin, methylcellulose and sodium tripolyphosphate; the ice crack layer is made of ice flower crystals with crystal glaze as the main material. The ice-crack-shaped polished crystal tile is manufactured sequentially through the steps: manufacturing a flower net; blending coloured glaze; pushing-printing the coloured glaze and ice flower crystal powder; pushing-printing frit particles; firing; and polishing. According to the invention, a crystal effect liked by people is integrated into the transparent frit layer of the polished crystal tile to form a snowflake-like natural, clean and varied embedded crystal effect, so that the tile with the novel technology has stronger decorative performance; the manufacturing method of the ice-crack-shaped polished crystal tile is simple and rapid, capable of realizing large-batch mechanical production under the condition of no great change of the original equipment, extremely simple in operation and capable of realizing flexible production for tiles with different deigned styles.

The invention relates to a preservation method of an excrement sample, a solution for preservation, a preparation method and application. A corresponding excrement preservation solution can be prepared from materials according to a formula, without the need of complicated operation; collected excrement is directly put into the preservation solution and can reach the effect of stabilizing microorganism components, without the need of special treatment. The collected excrement is mixed with the preservation solution which takes a water-soluble organic solvent as an effective component to prepare the excrement sample which can keep an excellent preservation property of microorganisms in the excrement sample. When the excrement sample is preserved by utilizing the formula, a frozen preservation effect of a sample can be realized under normal temperature, so that sample collection and preservation of the sample can be carried out at any time and long-time transportation of the excrement sample is convenient to realize. The excrement preservation solution provided by the invention is safe and efficient, can be used for maintaining the abundance of bacteria in the excrement for long time, is low in cost and has a good application prospect and economic benefits.

The invention relates to a coated cloth and especially relates to a hydrophobic bacteriostasis multifunctional coated cloth and a processing method thereof. The hydrophobic bacteriostasis multifunctional coated cloth comprises a warp knitting fabric, a bacteriostasis coating on the surface of the warp knitting fabric, and a hydrophobic coating on the bacteriostasis coating. The bacteriostasis coating is prepared from 15-20 parts by weight of bamboo fibers, 0.5-2 parts by weight of Wasabia japonica extract, 0.5-2 parts by weight of white gourd kernel extract, 20-35 parts by weight of a polyvinylidene chloride emulsion and 35-45 parts by weight of an acrylate copolymer-paraffin composite emulsion. The hydrophobic coating is prepared from 100 parts by weight of PVC paste resin, 50-80 parts by weight of an eco-friendly plasticizer, 2-5 parts by weight of a stabilizing agent, 0-60 parts by weight of a filler, 0-20 parts by weight of a fire retardant, 0-5 parts by weight of a mildew inhibitor, 0-5 parts by weight of an anti-oxidant, 0-10 parts by weight of a binder and 0-70 parts by weight of hydrophobic nanometer fibers.

The invention discloses a carbon sphere-carbon nitride nanomaterial and preparation and application thereof. The spheres are loaded on the surface of the C3N4 in situ to form a composite two-dimensional layered structure, the mole ratio of the carbon spheres to the C3N4 is 0.025-0.1, and the preparation method includes the steps of 1, dissolving the C3N4 into an organic solvent, and evenly mixingto obtain a solution A; dissolving citric acid or glucose into a same organic solvent, and evenly mixing to obtain a solution B; 2, fully mixing the solution A and the solution B to form a homogeneoussolution for a hydrothermal reaction, after the hydrothermal reaction is completed, conducting centrifugation to collect precipitate, and conducting freeze drying to obtain the C3N4 material loaded with the carbon sphere in situ. The carbon sphere-carbon nitride nanomaterial is used for photocatalytic reduction of CO2.

The invention discloses a preparing method for anti-microbial hemostatic chitosan. The preparing method for the anti-microbial hemostatic chitosan comprises the steps that a cationic reagent solution is dropwise added in an epoxy reagent solution, the reaction temperature is controlled at 25-90 DEG C, reaction is conducted for 2-24h, pressure-reduction and distillation are conducted after the reaction is finished, and a quaternary ammonium reagent is obtained; the quaternary ammonium reagent is dissolved in a solvent, and a quaternary ammonium reagent solution is prepared; chitosan is added in an alkaline solution, then the quaternary ammonium reagent solution prepared in the step S1 is added and stirred for reaction, and the anti-microbial chitosan is obtained after washing and drying of raw products. The invention further discloses the application of the anti-microbialhemostatic chitosan. A chitosan anti-microbial hemostatic sponge is prepared, according to the standard of GB/T20944.3-2008, the detected bacteriostasis rate of staphylococcus aureus is greater than or equal to 98%, the bacteriostasis rate of escherichia coli is greater than or equal to 90%, and it is indicated that the prepared chitosan anti-microbial hemostatic sponge has the anti-microbial effect; the hemostatic effect of the prepared anti-microbial hemostatichemostatic sponge is excellent, and hemostatic time is less than or equal to 60 seconds; and the anti-microbial hemostatic sponge prepared by utilizing the chitosan has no obvious cytotoxicity, and biodegradation can be achieved.

The invention relates to silicon dioxide modified carbon dot fluorescent powder which is prepared from raw materials comprising citric acid, a silane coupling agent KH792 and silicon dioxide in a vacuum heating condition. The invention also provides an application of the silicon dioxide modified carbon dot fluorescent powder in preparing fluorescent silicone rubber and the fluorescent silicone rubber prepared from the silicon dioxide modified carbon dot fluorescent powder. The fluorescent silicone rubber is prepared by the following step of fully mixing and vulcanizing the raw materials of thecarbon dot fluorescent powder, the silicon rubber, silicon dioxide, hydroxyl silicone oil and DMDBH. The preparation method of the silicon dioxide modified carbon dot fluorescent powder provided by the invention is simple and rapid and green and environment-friendly. The silicon dioxide modified carbon dot fluorescent powder is applied to silicone rubber, so that the silicone rubber has an excellent fluorescent performance, and the heat stability and the ageing resistance of the silicone rubber are improved.