60results about How to "Preparation applicable" patented technology

The invention discloses a LaFeSi based magnetic refrigeration composite material and a preparation method and application thereof. The LaFeSi based magnetic refrigeration composite material comprises functional body components such as LaFeSi based alloy particles and matrix components such as low-melting-point metal or alloy, and the LaFeSi based alloy particles are bonded and coated by the matrix components to form a bulk material; and the LaFeSi based alloy particles are of a NaZn13 type structure. According to the LaFeSi based magnetic refrigeration composite material and the preparation method and application thereof, composite hot pressing is conducted between the cheap and easily-obtained low-melting-point metal or alloy and the LaFeSi based alloy particles, the appropriate low-melting-point components are selected, the pressing pressure, the hot pressing temperature, the pressure maintaining time and the like are adjusted, and thus the high-thermal-conductivity LaFeSi based magnetic refrigeration composite material can be obtained; the magnetic entropy change of the LaFeSi based magnetic refrigeration composite material is less reduced compared with that before hot pressing, the magnetic hysteresis loss is low, and thermal hysteresis is avoided; and in addition, the process is simple and easy to operate, the process conditions are relatively mild, energy consumption is little, the cost is low, the repeatability is good, and the preparation method can be widely used in preparation of magnetic refrigeration materials.

Growing method of alkali metals, chalcogene compounds crystal of gallium or indium, involves synthesis and crystal growth of a type alkali metals, chalcogene compounds crystal of gallium or indium ATrQ2(A=Li,Na,K,Rb,Cs;Tr=Ga,In;Q=S,Se,Te)the synthesis and crystal growth. The purpose of this invention is to combine the synthesis of alkali metals, chalcogene compounds crystal of gallium or indium ATrQ2 and growth technology of flux crystal. Choose alkaline earth metal chalcogene compounds, chalcogene compounds of gallium or indium and proper alkaline metal halide flux for raw materials, through reaction flux method to prepare and grow alkali metals, gallium or indium sulfur compounds ATrQ2 crystal.

The invention provides a preparation method for a large-size slice-shaped and ultrahigh-heat-conductivity diamond/copper composite material and relates to the preparation method for the diamond/coppercomposite material. The purpose of the preparation method for the large-size slice-shaped and ultrahigh-heat-conductivity diamond/copper composite material is to solve the problems of the low heat conductivity and the poor interfacial bonding strength of the diamond/copper composite material. The preparation method comprises the steps that diamond particles coated with metal films are filled intoa mold cavity of a graphite mold to obtain a prefabricated body; and the prefabricated body is placed into a crucible, block-shaped pure copper and copper alloy are placed at the upper portion of theprefabricated body inside the crucible to be placed into an air pressure leaching furnace, interfacial layer material tissue form adjusting and control are performed under an argon protective atmosphere, warming copper melting, heat preservation and pressure maintaining leaching are performed, and finally, pressure maintaining stepped cooling is performed. In an obtained composite material component, the diamond volume fraction is 60-85%, the heat conductivity reaches 1500 W/mK, the edge length reaches 60-130 mm, and the thickness reaches 0.2-4 mm. The preparation method for the large-size slice-shaped and ultrahigh-heat-conductivity diamond/copper composite material is suitable for preparing the high-heat-conductivity diamond/copper composite material.

The invention relates to a racemic 2-(alpha-hydroxyl amyl) benzoate tablets and a preparation method thereof, aiming at solving the problem that an active ingredient, namely racemic 2-(alpha-hydroxyl amyl) benzoate is easy to degrade and has low stability in a conventional tablet preparation technology. According to the preparation method of the racemic 2-(alpha-hydroxyl amyl) benzoate tablets, crude drug powder is directly tabletted or an alkalization treatment process is adopted in a preparation technology, so that the stability of the main drug of the racemic 2-(alpha-hydroxyl amyl) benzoate tablets is obviously improved; and the preparation method is suitable for preparation of the tablets.

The invention belongs to the technical field of electrochemistry, and in particular relates to a two-dimensional nanometer thin film negative electrode material of a lithium ion battery and a preparation method of the negative electrode material. The problems of abrupt capacity attenuation and poor stability of a TiO2 negative electrode during large-current charge and discharge are solved by preparing a TiO2 two-dimensional nanometer structure. The preparation method comprises the following steps of growing a TiO2 nanometer thin film on a sponge by an atomic layer deposition method; and performing thermal treatment on the sponge coated with the TiO2 nanometer thin film to remove the sponge so as to obtain a TiO2 two-dimensional nanometer thin film after deposition frequency is reached, wherein the thin film is used for a negative electrode of the lithium ion battery. By simply changing the deposition frequency, the nanometer thin films with different thicknesses can be obtained. The preparation method has the advantages of simplicity in process, high repeatability and high yield. The negative electrode material of the lithium ion battery, prepared according to the method, has the advantages of structural stability and good cycle performance.

The invention provides a pemetrexed liposome, which is characterized by being prepared from a pemetrexed and a liposome mixture, wherein the mass ratio of the pemetrexed and the liposome mixture is 1:(0.1-10); through the prepared pemetrexed liposome, the drug resistance can be reduced by more than 60% of non-liposome pemetrexed. Known from stability test, the liposome is favorable in stability. Known from clinical trials, the efficacy of the liposome can be improved by more than 80% compared with the common preparation, the in-vivo retention time can be prolonged by more than 65%, and the targeting effect is obvious.

The invention provides a polyurethane material, a high-elasticity antibacterial polyurethane powder puff and a preparation method thereof. The polyurethane material is prepared from the following rawmaterials in parts by weight: 100 parts of a polyether polyol mixture, 3 to 6 parts of a wollastonite powder, 1 to 2 parts of an anti-mildew additive, 60 to 80 parts of an isocyanate mixture, 30 to 40parts of a hardening agent, 35 to 45 parts of a foaming agent, 40 to 50 parts of fillers, 5 to 8 parts of an antibacterial agent, 1 to 4 parts of a refreshing and slipping agent, and 2.5 to 6 parts of a catalytic cross-linking agent. The polyurethane powder puff provided by the invention is researched and developed specifically at the aim of providing good adaptability and compatibility for humanbody skin; compared with the conventional latex and the existing powder puff which is prepared by adopting industrial polyurethane, the polyurethane powder puff has the unique advantages of better skin affinity, no slag drop, odourlessness, bacterial resistance, high elasticity, better oil control capacity, more convenience in cleaning, exquisite hand feeling, environment friendliness and the like, and has a broad popularization and application prospect.

The present invention relates to the development of active anticancer component in Chuanxiong rhizome, and is especially the application of coniferyl ferulate in anticancer medicine. The present invention separates coniferyl ferulate from Chuanxiong rhizome as one traditional Chinese medicine and provides new precursor compound for designing new medicine with effective Chinese medicine component. The present invention establishes the liquid chromatographic purification method of the compound with simple operation, high repeatability and mild condition, and suitable for the preparation of Chinese medicinal components with inferior chemical stability.

The invention provides a polyurethane material and a preparation method thereof. The polyurethane material is prepared from the following raw materials in parts by weight: 100 parts of polyether polyol mixed material, 3-6 parts of wollastonite powder, 1-2 parts of mould proof additive, 60-80 parts of isocyanate mixed material, 30-40 parts of a hardening agent, 35-45 parts of a foaming agent, 40-50parts of a filler, 5-8 parts of an antibacterial agent, 1-4 parts of a slipping agent, 2.5-6 parts of a catalytic crosslinking agent, 3-5 parts of a chain extender, 0.1-2 parts of an antioxidant, and2-5 parts of a flame retardant. The polyurethane material is preferentially developed for a powder puff, thus the powder puff prepared based on the material can provide good adaptability and compatibility for the skin of the human body, compared with a powder puff prepared from traditional latex and existing industrial polyurethane, the powder puff prepared based on the material has the unique advantages of being better in skin friendliness, free of chip falling, odourless, antibacterial, high in elasticity, better in oil control property, more convenient to clean, exquisite in hand feeling,environmentally friendly and the like, meanwhile, the invention provides a brand-new polyurethane preparation technology, and the prepared polyurethane material has the wide application prospects.

The invention discloses a method for synthesizing ph-dicarbonyl-aryl-formic-ether series compounds based on the metal-free participation method, and belongs to the technical field of organic chemistry. The method includes the steps that phalkynyl benzoic ether is used as a reaction substrate, bromide is added to serve as a bromine source, peroxosulfuric acid inorganic salt serves as an oxidizing agent, a solvent is added, the mixture is reacted for 6 hours to 12 hours at the temperature of 60 DEG C to 80 DEG C, then column chromatography silica gel (SiO2) is added, then the mixture continues to be stirred for 0.5 hour to 1 hour, filtering, extracting and drying are carried out, filtering is carried out again, filtering liquid is subjected to pressure reduction distillation, an organic solvent is removed, then rapid column chromatography is carried out, and the ph-dicarbonyl-aryl-formic-ether series compounds are obtained. By means of a reaction, using of a metal catalyst is avoided, the reaction condition is mild, the substrate is wide in applicability, easy and convenient to operate, low in cost, small in by product, high in product purity, convenient to separate and purify and capable of suiting for large-scale preparing.

The present invention discloses a method for preparing tert-butoxycarbonyl phenylboronic acid, and relates to the field of organic synthesis, and the tert-butoxycarbonyl phenylboronic acid is prepared from carbonyl phenylboronic acid as a raw material by one-pot method in the effect of thionyl chloride and tert-butyl alcohol base. The inexpensive and readily available raw material is used, the cost of production is dramatically reduced, the method is suitable for preparation of o-tert-butoxycarbonyl phenylboronic acid, m-tert-butoxycarbonyl phenylboronic acid, and p-tert-butoxycarbonyl phenylboronic acid; and highest product molar yield is 95%, purity reaches 98%, process conditions are stable, operation is easy, and industrial mass production is easy to achieve.

The invention relates to a manufacturing method of a nanometer particle film used for a flexible perovskite solar cell. The method comprises the following steps of using a precursor solution containing chlorine to soak nanometer particles so as to carry out preprocessing, and acquiring the preprocessed nanometer particles; dispersing the acquired nanometer particles in a solvent and acquiring a nanometer particle dispersion liquid; and depositing the nanometer particle dispersion liquid into a film, drying the solvent and acquiring the nanometer particle film. By using the manufacturing method, under a low temperature, a compacted film can be acquired. And the method is suitable for perovskite solar cell manufacturing on various kinds of flexible substrates. The nanometer particle film is used for the flexible perovskite solar cell and stability of the solar cell can be increased. Simultaneously, the flexible perovskite solar cell possesses excellent photoelectric conversion efficiency.

The invention discloses an etchant for displaying an austenite structure of heat-resistant steel for an air valve and a using method of the etchant. The etchant is divided into an etchant 1 and an etchant 2, the etchant 1 is prepared from ferric trichloride, hydrochloric acid and water, and the etchant 2 is prepared from anhydrous cupric sulfate, sulfuric acid, hydrochloric acid and glycerol. Theusing method comprises the following steps: (1) preparing the etchant; (2) preparing a sample: (3) etching the sample: immersing a metallographic sample prepared in the step (2) into a culture dish filled with the etchant 1 with the observation surface facing downwards, standing for 10-30 seconds, taking out the sample, washing the sample with tap water, washing the sample with absolute ethyl alcohol with the mass fraction of 99.5%, and blow-drying the sample; then, immersing the sample into a culture dish filled with the etchant 2, standing for 10-20 seconds, taking out the sample, washing with tap water, washing with absolute ethyl alcohol with the mass fraction of 99.5%, and blow-drying; and a clear and complete room-temperature austenite structure can be observed under a microscope. Byadopting the etchant and the using method provided by the invention, the metallographic structure quality of the heat-resistant steel for the air valve can be remarkably improved, and the metallographic quantitative analysis accuracy is improved; and the etchant is simple to prepare and easy to popularize.

The invention provides a single-stress-element optical fiber tilted fiber bragg grating and a preparation method thereof. A single-stress-element optical fiber is a special optical fiber with a singlestress element in a cladding. The single-stress-element optical fiber tilted fiber bragg grating is characterized by comprising the following steps: sequentially putting an excimer laser, a reflector, a beam expander, a cylindrical lens, a mask plate and a single stress element optical fiber into a writing light path, and adjusting the optical fiber by using a refractive index matching liquid, amicroscope and an optical fiber rotating clamp; and enabling the included angle between the stress element and the grating surface in the fiber core to meet the requirement of the required single-stress-element optical fiber tilted fiber bragg grating. The single-stress-element optical fiber tilted fiber bragg grating can be used for preparing the single-stress-element optical fiber tilted fiber Bragg grating, and can be widely applied to the technical field of optical fiber devices.

The invention discloses a culture medium preparation device and method. The culture medium preparation device comprises a preparation container, a stirring device, a bracket and a hollow hose provided with two openings at both ends. The culture medium preparation method is characterized in that all culture medium components are added into the preparation container and are continuously stirred by the stirring device without being decocted previously, so that agar powder components which are unsolvable at normal temperature can be uniformly dispersed and then subpackaged into a culture container through the hollow hose. The culture medium preparation device is simple in structure and easy to manufacture, and can be formed by jointing conventional laboratory equipment. The culture medium preparation method has the advantages of simple operation process and high efficiency. The prepared culture medium has high accuracy and can be solidified uniformly. Thus, the invention can be widely used in colleges and universities, research units, factories and enterprises.

The invention discloses a preparation method of a die-cutting knife edge with a gradient function, and belongs to the technical field of laser cladding processing. The preparation method is characterized in that three cladding layers are cladded on the surface of a die-cutting knife by using a laser (1200 W-2000W) with stable cladding performance. The first layer is a base layer, the base layer is made of 100.00% of Ni60A powder, the three cladding layers are cladded, and two filling layers are cladded among the three cladding layers to form the base layer; the second layer is a dielectric layer, the dielectric layer is made of 87.20% of Ni60A powder, 6.60% of Co powder and 6.20% of WC powder, two cladding layers are cladded on the basis of the base layer, and a filling layer is cladded between the two cladding layers to form the dielectric layer; and the third layer is a tool nose layer, and the tool nose layer is made of 82.30% of Ni60A powder, 2.50% of Co powder and 15.20% of WC powder. According to the preparation method, and the existing laser cladding technology is controlled and improved, so that the laser cladding technology is suitable for preparing the die-cutting knife with the gradient function.

The invention relates to the technical field of plant culture, and particularly discloses a culture solution for ornamental roses and a preparation method of the culture solution. The culture solution for the ornamental roses is prepared from the following raw materials in parts by weight: 9 to 11 parts of urea, 4 to 6 parts of monopotassium phosphate, 3 to 5 parts of bacillus subtilis, 1 to 1.5 parts of ammonium chloride, 1 to 1.5 parts of calcium chloride, 4 to 6 parts of nutritional leavening, 1 to 2 parts of white vinegar and 600 to 1500 parts of water, wherein the nutritional leavening comprises traditional Chinese medicine residue leavening, rice washing water, tomato leavening and potato leavening. The preparation method of the nutritional leavening comprises the following steps: fermenting traditional Chinese medicine residues, rice washing water, tomatoes and potatoes, and then conducting filtering. According to the invention, the raw materials cooperate with one another, so the ornamental roses grow faster, have enhanced disease resistance, and are luxuriant in branches and leaves and bright in flower color; and in addition, waste raw materials are selected for preparation, so the concept of environmental protection is met. The preparation method disclosed by the invention is simple and convenient to operate and suitable for batch production.