41results about How to "Meet preparation needs" patented technology

The invention relates to a preparation method of nano calcium fluoride for a self-lubricating tool material. According to the preparation method, an ultrasonic reduction method is adopted. The preparation method comprises the following steps of: preparing calcium nitrate and ammonium fluoride serving as raw materials into aqueous or alcohol solution respectively; adding PEG 6000-abslute ethyl alcohol composite solvent; performing ultrasonic dispersion; mixing the dispersed calcium nitrate solution and the ammonium fluoride solution under ultrasonic and stirring conditions; and reacting, aging, centrifuging, cleaning and drying to obtain nano calcium fluoride powder. The prepared nano calcium fluoride has the particle size of 15-50 nm and has high purity, complete crystal form, high crystallinity, uniform size distribution and high dispersion. The preparation method also has the advantages of simple technical process, convenience for operation and low equipment requirements.

The invention relates to a large-tow carbon fiber oiling agent. The large-tow carbon fiber oiling agent is prepared from the following components in parts by mass: 60 to 70 parts of a compound A, 5 to 15 parts of quaternary ammonium salt block silicone oil, 1 to 5 parts of a liquid antioxidant and 10 to 20 parts of a surfactant. By adopting the large-tow carbon fiber oiling agent provided by the invention, the problems in a current large-tow carbon fiber preparation process that an oiling agent is stuck in a roller and has poor heat resistance, the anti-static electricity property is not lasting, and the like are solved; unification of properties including high attachment, high anti-static electricity property, low roller sticking property, high heat resistance and the like is realized by the single oiling agent; the requirements of preparation of large-tow carbon fibers are met, and the quality of the carbon fibers is improved.

The invention relates to a preparation method of a self-lubrication material nanometer calcium fluoride for a ceramic cutting tool. The preparation method comprises the following steps: (1) weighing calcium nitrate and ammonium fluoride, respectively placing in a beaker, adding distilled water and anhydrous ethanol, to obtain a calcium nitrate liquid with content of calcium nitrate being 1mol / l, and an ammonium fluoride liquid with content of ammonium fluoride being 2.2-3.2mol / l; (2) weighing a certain amount of polyethylene glycol (PEG6000) dispersing agent with molecular weight of 6000, adding the ammonium fluoride liquid so that the mass fraction of the polyethylene glycol in the liquid is 1-2%; performing ultrasonic dispersion for 10-15min, thoroughly dissolving, to obtain a polyethylene glycol-ammonium fluoride complex liquid; and (3) placing the polyethylene glycol-ammonium fluoride complex liquid into a magnetic stirrer, setting the reaction temperature of 15-50DEG C, dropping the calcium nitrate liquid in the polyethylene glycol-ammonium fluoride complex liquid through a separating funnel, appropriately adjusting the speed to be close to flow-in speed (drop-in speed is 1-30ml / min), wherein the stirring frequency under which no liquid is splashed is the best. The prepared nanometer calcium fluoride powder is high in purity, complete in crystal form, high in crystal degree, uniform in size distribution, and good in dispersity.

The invention relates to a method for preparing an insoluble anode plate for waste water reuse, which is characterized in that: a metal plate is selected as a substrate to prepare a noble metal coating, and at least one layer of the noble metal coating is coated on the substrate through a pretreatment process. At the same time, the pretreatment process adopted includes heat treatment and etching process, and the substrate is a plate-like structure. Thus, the common anode mesh can be divided into several small pieces for processing, so as to ensure that the current distribution of the anode mesh is uniform during the electroplating process, so that the electroplating layer of the cathode plate is more uniform. It has a wide range of uses and can meet the preparation needs of a crack-free structure and stable anode, and can be used in electroplating, hydrometallurgy and metal foil preparation. The base is plate-shaped, and its size can be flexibly designed according to the requirements of use, and can be customized for actual processing needs.

The invention provides a soil solidifier as well as a preparation method and an application thereof and relates to the technical field of materials. The soil solidifier is prepared from raw materials in percentage by weight as follows: 30%-50% of cement, 25%-45% of fly ash, 10%-25% of anhydrite and 5%-20% of an additive. The soil solidifier can modify sludge and spent clay into materials with high hardness and good water resistance and has better application prospects. The preparation method of the soil solidifier comprises the step of raw material mixing. The method adopts a simple preparation process and is high in controllability, low in preparation cost and suitable for large-scale production.

The invention relates to a large-tow carbon fiber oil agent used for wet processing and a preparation method thereof. The large-tow carbon fiber oil agent comprises the following modified oil components in parts by weight: 80 to 90 parts of compound A shown as formula (I), 1 to 3 parts of an antioxidant, 1 to 3 parts of polyether modified silicone and 5 to 15 parts of a non-ionic surface active agent. The large-tow carbon fiber oil agent meets the requirements that the oil agent is free of roller sticking after long-time use, lasting in antistatic property and good in high-temperature heat resistance, the carbon fiber is effectively protected, the requirement for the preparation of wet processing large-tow carbon fiber is met, and the quality of the carbon fiber is improved.

The invention discloses a dressing with functions of stopping bleeding and accelerating wound healing, which comprises small molecule polydeoxyribonucleotide (SMPDRN) extracted from salmon. The SMPDRN is extracted from salmon tissues, and the salmon tissues include salmon testis, semen, and eggs. Experiments of the present invention have proved that the effects of hemostasis, pain relief, anti-inflammation, promotion of wound healing and the like can be achieved. The small molecule polydeoxyribonucleotide (SMPDRN) used in the present invention is obtained by the preparation method provided in the present invention, and has the characteristics of molecular weight concentrated in the high-efficiency region, relatively simple components, high purity, simple process, and stable components. It meets the needs of the preparation of hemostatic dressings, enables the hemostatic dressings to obtain stable curative effect and ideal safety, overcomes the difficulty of animal preparations in the preparation of hemostatic dressings, and develops small molecule polydeoxyribonucleotides in the field of medicine of new applications.

Disclosed are a mobile concrete mixing plant and a batching machine thereof. The batching machine is provided with a batching machine body (100) supported on a predetermined base (510) by supporting legs (300), a conveying machine (400) and multiple supporting legs (300). The conveying machine (400) is suspended below the batching machine body (100) via a suspension component. The batching machine has a working state and a conveying state. When the working state is switched to the conveying state, the vertical height of the supporting legs (300) is reduced and the outline of the batching machine is reduced so that before transferred and transported the batching machine body (100) does not need to be separated from the conveying machine (400) and materials do not need to be conveyed respectively thereby enabling the batching machine to possess better transfer and transportation performance. At the same time, the batching machine has a larger outline size in the working state so as to meet the requirement of the mobile concrete mixing plant on the preparation of concrete.

The invention discloses environment-friendly hydrogen production purification equipment with photovoltaic auxiliary power supply. The environment-friendly hydrogen production purification equipment comprises a main box body, and a movable solar panel and a fixed solar panel which are arranged above the main box body. A water tank and a storage battery are arranged in the main box body. The movable solar panel is arranged above a movable supporting plate and rotationally connected with the main box body through a horizontal shaft. A rotating strip is arranged in the vertical edge of the main box body, and a top bolt for jacking the movable supporting plate is arranged at the end, opposite to the main box body, of the rotating strip. The storage battery is electrically connected with the movable solar panel and the fixed solar panel through a charging module. The top of the water tank is covered with a box cover. Two electrodes are arranged in the box cover, cover pipes is arranged in the box cover, and the electrodes are located in the cover pipes. A box cavity is formed in the main box body, and a horizontal opening is formed in the arc-shaped face of the horizontal edge of the main box body. The environment-friendly hydrogen production purification equipment with photovoltaic auxiliary power supply is convenient to transport and hoist, can be used for preparing hydrogen under the condition of no external power supply, and is suitable for being widely popularized and used.

The invention relates to a carbon fiber oiling agent with a non-silicon oiling agent and a silicon-containing oiling agent compounded for use and a preparation method of the carbon fiber oiling agent. The carbon fiber oiling agent is obtained by compounding the non-silicon oiling agent and the silicon-containing oiling agent. The non-silicon oiling agent is prepared from, by mass, 100 parts of high heat-resisting compound A, 1-5 parts of antioxygen and 20-30 parts of surface active agent. The silicon-containing oiling agent is prepared from, by mass, 100 parts of side chain aminopropyl modified silicon oil, 3-10 parts of matter B and 20-30 parts of surface active agent. The carbon fiber oiling agent solves the problem of insufficient heat resistance of an existing oiling agent in the high-performance carbon fiber preparation process, and the non-silicon oiling agent and the silicon-containing oiling agent are matched for use, the preparation need of high-performance carbon fibers under different technological conditions can be met, so that the quality of the carbon fibers is improved.

The invention relates to a method for preparing a neodymium chloride hydrate through a programmed temperature increasing method. The method comprises: loading a granular crystal NdC13.6H2O into a dehydration reaction kettle, starting the dehydration reaction kettle to stir, introducing nitrogen being subjected to low temperature steam preheating, starting a vacuum pump, vacuumizing, setting a temperature increasing program to start heating when the vacuum degree achieves 50 kpa, and naturally cooling the kettle temperature to 50 DEG C to obtain the neodymium chloride hydrate product, wherein the temperature increasing program comprises that the heating is performed for 2 h at the heating rate of 0.625 DEG C / min within the temperature range from room temperature to 100 DEG C and the thermal insulation time is 3 h at a temperature of 100 DEG C, the heating is performed for 2 h at the heating rate of 0.167 DEG C / min within the temperature range of 100-120 DEG C and the thermal insulation time is 6 h at a temperature of 120 DEG C, the heating is performed for 2 h at the heating rate of 0.167 DEG C / min within the temperature range of 120-140 DEG C and the thermal insulation time is 4 h at a temperature of 140 DEG C, and the heating is performed for 2 h at the heating rate of 0.15 DEG C / min within the temperature range of 140-158 DEG C and the thermal insulation time is 10 h at a temperature of 158 DEG C.

The invention discloses a glass tube vacuum packaging method for traveling wave tube cathode, comprising the following steps: (1) taking a glass tube with a large end and a small end, preheating and drying; (2) placing protective nets, cathode components or active substances in Into the big end of the glass tube, the cathode part or the active material are fixed on both sides by protective nets respectively; (3) The end face of the big end of the glass tube is closed under the protection of the protective gas; (4) The small end of the glass tube is sealed with a vacuum exhaust (5) seal off the glass tube on the vacuum exhaust stage to complete the vacuum packaging of the cathode component or active material by the glass tube; the present invention carries out vacuum packaging for the cathode component or active material, The cathode parts or active materials are isolated from the outside world, to prevent the cathode parts or active materials from being affected by external factors, to ensure the performance of the cathode parts or active materials, to further ensure the performance of the traveling wave tube, and to meet the preparation needs of the cathode of the traveling wave tube.

The invention discloses a formula and a preparation method of tea for treating muscae volitantes, and belongs to the technical field of medical teales. The formula is composed of the following components in parts by weight: 8-12 parts of root bark of delavay ardisia, 3-8 parts of flos buddlejae, 3-8 parts of fried semen cassiae, 3-8 parts of fructus lycii and 1-3 parts of ground bamboo. After being taken for a period of time, the prepared tea bag has the capability of improving muscae volitantes, epiphora induced by wind, dry eyes, blurred eyes and ghosting characters, has good rehabilitation after use, has the same soup color and taste as tea soup, is prepared from pure traditional Chinese medicines, and is relatively small in toxic and side effects, and thus the auxiliary treatment control of muscae volitantes can be realized. In addition, moisture removal preparation of the auxiliary materials is achieved through low-temperature freeze-drying in the preparation process, the overall medicinal activity is improved, and the preparation requirement is met.

The biodegradable magnesium alloy blood vessel rack consists of magnesium in 60-95 wt% and other metals, including RE, for the rest. Metal magnesium as the basic material has excellent tissue compatibility and blood compatibility, and the added other metal, including RE, elements raise and improve the comprehensive performance, especially mechanical strength, plasticity, degradability and biocompatibility. The magnesium alloy blood vessel rack has tensile strength of 200-300 MPa, elastic module of 10-50 GPa, elongation at break of 2-10%and degrading half life of 6-18 weeks. Most of the degraded metal ions are drained through renal tubules while small part being utilized by human body.

The invention discloses a preparation method of a thin-walled tubular part with a revolution curved surface and aims at solving the problems that when a titanium alloy sheet tubular part is machined, machining and clamping are difficult to realize and the processing quality is difficult to guarantee; raw materials are low in utilization rate, long in processing period and high in cost; cold bending and forming difficultly meets the design requirement; and stamping and hot-bugling processing is rigorous in requirements on equipment and process, and is higher in cost. The invention provides a simple preparation method of the thin-walled tubular part with the revolution curved surface, in particular to a simple preparation method of a titanium alloy thin-walled tubular part with the revolution curved surface. According to the simple preparation method, the preparation demand of the titanium alloy thin-walled tubular part can be met. The method comprises the steps of preparing a fixed mold, cutting raw materials, as well as performing assembling and thermal treatment. The preparation method disclosed by the invention has the advantages of simplicity in operation, convenience in use, no need of expensive equipment, high utilization rate of the raw materials, short period, low production cost, high precision of products and better application prospect.