24 results about "Vacuum mixing" patented technology

The invention provides a scintillator film for a real-time X-ray dosimeter as well as a preparation method and application of the scintillator film. The preparation method comprises the following steps: weighing Eu (NO3) 3.6 H2O, Tb (NO3) 36H2O, Lu (NO3) 36H2O, NaF and NH4F to prepare powder B; preparing a rare earth fluoride material C from the powder B; weighing a polydimethylsiloxane prepolymer and a curing agent, adding the polydimethylsiloxane prepolymer and the curing agent into a cyclohexane solution, and performing ultrasonic dispersion to obtain a mixture D; adding the rare earth fluoride material C and PMMA particles into an ethanol solution, and uniformly dispersing to obtain a mixture E; dropwise adding the mixture E into the stirred mixture D, and performing vacuum mixing to obtain a mixture F; and transferring the mixture F to the surface of a ceramic plate which is respectively cleaned by water, ethanol and acetone and dried, coating to form a thin film, heating and annealing, and cooling to obtain the flexible scintillator thin film NaLuF4: Tb < 3 + > / Eu < 3 + > coated PDMS which is used for a real-time X-ray dosimeter.

The application provides a vacuum mixing process optimization method and system, which comprises collecting mixing container cavity pressure, jacket temperature, material torque, stirring speed, and air extraction flow signal, calculating pressure change rate, torque fluctuation amplitude, air extraction amount per unit time, and pressure fluctuation characteristic quantity, dividing the vacuum mixing process into four stages of initial exhaust, bubble release, viscosity climb, and densification stability; in the initial exhaust section, the vacuum valve opening degree and time length are controlled according to the air extraction amount and the pressure change rate, and the pressure response delay is recorded; in the bubble release section, an air extraction and stop alternating sequence is generated, and the air extraction and stop time length is corrected in combination with the delay; in the viscosity climb section, the target pressure interval is determined according to the torque, temperature, and pressure change rate, and the speed and valve opening degree are cooperatively adjusted to stabilize the pressure; in the densification stability section, a stability criterion is constructed, and the valve opening degree is controlled as needed; when adjacent stages are switched, the target pressure starting point, valve opening degree initial value, speed initial value, and control period of the next stage are corrected according to the end parameters of the previous stage.

The utility model discloses sausage stuffing vacuum stirring device, including the blender, the blender inside rotation is connected with two groups of rotating shafts, the rotating shaft outside rotation is connected with a plurality of groups first rotating link, first rotating link outside fixed connection has the stirring piece, first rotating link one end fixed connection has the connecting gear, the connecting gear one side is connected with the rack, the rack sliding connection is in the rotating shaft outside, the rack one end penetrates the blender fixed connection has the connecting plate, the connecting plate inside screw thread connection has the first screw rod, first screw rod tail and blender rotation is connected, can change the angle of stirring blade according to different types of meat stuffing, can aim at the real -time change of material characteristic in the process of stirring sausage stuffing.

The invention discloses a high-heat-conductivity and high-latent-heat phase change heat conduction material and a manufacturing method thereof. The material comprises the following components in percentage by weight: 5%-8% of resin, 5%-10% of wax, 5%-10% of fatty acid, 0.01%-1% of an antioxidant and the balance of modified heat-conducting powder, wherein the modified heat-conducting powder is obtained by carrying out intercalation treatment on heat-conducting powder by an intercalator and carrying out modification treatment by a silane coupling agent. The preparation method comprises the following steps: carrying out ball milling on heat-conducting powder and an intercalator for intercalation treatment; then reacting with a silane coupling agent to carry out secondary modification; heating and mixing the resin, the wax, the fatty acid and the antioxidant to obtain a liquid mixture; adding modified heat-conducting powder and performing vacuum mixing; after compression molding, cooling and cutting to obtain a finished product. Through a co-processing strategy of intercalation and secondary modification of the silane coupling agent, the problems of easy agglomeration and weak interface bonding of the heat-conducting filler are effectively solved, and the prepared material has high heat conductivity coefficient and high latent heat density, is excellent in cycling stability, and can meet the thermal management requirements of high-end devices such as 5G base stations and new energy automobiles.

This invention discloses a grout color mixing machine, comprising a frame, a vacuum mixing device mounted on the frame, and a dispensing and filling device. The frame includes a table and a first support and a second support mounted on the table. The vacuum mixing device includes a mixing tank, a lifting mechanism mounted on the first support, a mixer driven by the lifting mechanism, and a vacuum pump. The mixer includes a sealing cover, a mixing motor mounted above the sealing cover, and a mixing head mounted below the sealing cover. This grout color mixing machine can thoroughly and evenly mix pre-mixed grout while eliminating air bubbles during the mixing process. It also allows for convenient dispensing and filling of the mixed grout into grout dispensing containers. It has the advantages of reasonable structure, simple operation, high mixing and filling efficiency and quality, and enables grout color mixing and dispensing in locations other than factories, such as retail stores.

The invention discloses a food-grade silica gel coating of an integrated anti-skid mute coffee cup and a preparation method of the food-grade silica gel coating, and provides a structural design of replacing an additional part with the whole silica gel coating aiming at the problems that a traditional anti-skid rubber ring is easy to fall off and hide dirt. A food-grade double-component addition type silicone rubber formula and a vacuum mixing and low-temperature curing process are adopted, and customized pre-activation treatment of ceramic, glass and plastic base materials is matched, so that high adhesive force of the coating and the base materials is realized; a degradable silica gel modification scheme is introduced, so that the coating has multiple-effect synergistic advantages of skid resistance, silence, food-grade safety, wear resistance, environmental protection and degradability, is adaptive to coffee cup food contact scenes, and is suitable for large-scale production.

The utility model relates to the technical field of coffee machines, in particular to a vacuum coffee machine, a coffee bean quantifying structure of the coffee machine, a vacuum mixing structure, a sealing structure of the vacuum coffee machine and a coffee making method based on the vacuum coffee machine. The vacuum mixing structure comprises a processing structure, the processing structure comprises an integrated container, a blade assembly, a sealing and fixing cover and a rotating power device, the sealing and fixing cover completely shields an opening in the top end of the integrated container, and the integrated container is provided with a heating device, a rotating shaft hole, a water inlet, an air exhaust hole and a bottom outlet. According to the utility model, coffee beans and the like are ground, heated and extracted in a unique sealed space, and the opportunity that coffee powder is transferred among different units and is in contact with oxygen in air is avoided or reduced, so that the oxidation effect can be minimized, and the storage of volatile grease, antioxidants and enzymes in the coffee powder and the like can be maximized.

The invention belongs to the technical field of high polymer materials, and relates to a flame-retardant epoxy resin casting material and a preparation method thereof. The invention provides a preparation method of a flame-retardant epoxy resin casting material, which comprises the following steps: dissolving dimethyl polysiloxane in a lipophilic solvent, then dropwise adding onto aluminum oxide powder while stirring, and heating in a nitrogen atmosphere to obtain PDMS (Polydimethylsiloxane) modified aluminum oxide; mixing epoxy resin and silica powder in vacuum to obtain a resin mixture; mixing silane coupling agent modified DOPO, the PDMS modified aluminum oxide and an anhydride curing agent in vacuum to prepare a curing agent mixture; and performing vacuum mixing on the resin mixture and the curing agent mixture to obtain the castable. The PDMS modified aluminum oxide and the silane coupling agent modified DOPO are adopted, so that the electrical performance and the mechanical performance of the flame-retardant epoxy resin casting material are synergistically improved.

The utility model discloses a paraffin phase change material vacuum mixing and stirring tank, which comprises a tank body and a preheating mechanism, the upper end of the tank body is fixedly connected with a support frame, the upper end of the tank body is rotatably provided with an end cover, the upper end of the support frame is provided with a motor, and the motor is connected with the preheating mechanism. An output shaft of the motor is fixedly connected with a transmission shaft, the transmission shaft is connected with a rotating shaft through a first synchronous belt, the lower end of the rotating shaft is fixedly connected with a stirring rod, and the lower end of the tank body is fixedly connected with a discharging port. Stirring and preheating are synchronously carried out, an additional power source is not needed, and the working efficiency is improved.

This invention relates to the field of mixing device technology, specifically a vacuum mixing material preparation device, including a cylinder, a cylinder cover, a rotating shaft, a mixing paddle assembly, a counterweight compensation assembly, a vacuum tube, a drive component, an equipment box, a lifting mechanism, and a wear warning structure. The upper end of the counterweight compensation assembly extends upward through the rotating shaft, and the wear warning structure is connected to the protruding end of the counterweight compensation assembly to achieve visual monitoring of the wear degree of the mixing paddle. This invention uses a radially sliding mixing paddle assembly, in conjunction with the internal counterweight compensation assembly, to form a linkage transmission, achieving automatic wall-adhesion compensation after the scraper wears, ensuring that the scraper end is always in close contact with the inner wall of the cylinder, eliminating scraper failure and material accumulation and residue problems, thus ensuring the uniformity of material mixing and avoiding material waste; at the same time, the wear warning structure enables visual monitoring of the wear state, allowing for timely replacement of the scraper, greatly improving the convenience of equipment operation and maintenance.

The invention discloses a carbon-free composite spinel material for refining special steel of an aircraft carrier and a preparation method of the carbon-free composite spinel material. The carbon-free composite spinel material comprises the following components in percentage by mass: 20-30% of activated alumina micro powder, 5-12% of yttria-stabilized zirconia micro powder, 1-3% of a rare earth oxide composite additive and the balance of fused magnesite particles, wherein the rare earth oxide is formed by compounding Y2O3 and La2O3 according to the mass ratio of (2-3): 1; the preparation method comprises the steps of raw material high-energy ball milling pretreatment, vacuum mulling and aging treatment, isostatic compaction and gradient drying, and segmented controllable atmosphere sintering. Through the synergistic effect of zirconium oxide phase change toughening and rare earth oxide grain boundary purification, the high-temperature strength, thermal shock resistance and erosion resistance of the material are remarkably improved at the same time under the completely carbon-free condition, and the method is particularly suitable for the vacuum refining process of aircraft carrier special steel; the technical problems that a traditional carbon-containing material pollutes molten steel and a traditional carbon-free material is insufficient in performance are solved.

This invention discloses a highly active ceramic-collagen composite bone scaffold and its preparation method, belonging to the field of bone repair material preparation technology. Quaternized ammonium inorganic material inclusions, photosensitive resin, and dispersant are mixed and ball-milled to obtain a mixed slurry. The mixed slurry is then printed to obtain a bioceramic porous scaffold green body. The bioceramic porous scaffold green body is sintered to obtain a bioceramic porous scaffold. The bioceramic porous scaffold is then vacuum-mixed with collagen fiber slurry, followed by post-treatment to obtain a ceramic-collagen composite scaffold. The ceramic-collagen composite scaffold is then impregnated with rhBMP-2 solution to obtain the highly active ceramic-collagen composite bone scaffold. The preparation method of this invention not only solves the mechanical properties of the prepared bone scaffold but also achieves good osteogenic effects.

The utility model discloses a vacuum mixing and defoaming device for an anhydride curing agent, which relates to the field of chemical equipment and comprises a first mixing tank body, a second mixing tank body is arranged at the bottom of the first mixing tank body, a vibration chassis is arranged at the inner bottom of the second mixing tank body, a containing tank is arranged above the vibration chassis, and the containing tank is arranged above the second mixing tank body. A limiting lantern ring matched with the containing tank is arranged in the first mixing tank body, and a second limiting plate is arranged at the top of the containing tank. By means of the limiting lantern ring, the first clamping plate and the second clamping plate are ingeniously matched, the limiting lantern ring is rapidly installed, then the containing tank is aligned and installed, meanwhile, the first connecting plate and the second connecting plate are combined, screws and rubber are used for sealing, the installation process is simple and convenient, and the problems that traditional equipment is complex in structure and inconvenient to operate are solved. And the use and maintenance cost is greatly reduced.

The invention belongs to the technical field of pile foundation mud cake modification, and particularly relates to a pile foundation mud cake modification test method based on transparent clay, which comprises the following steps: step 1, preparation stage: preparing a uniform bubble-free transparent clay sample, consolidating the sample, and preparing reference mud and modified mud with stable performance; and 2, pile sinking and mud cake forming stage: drilling a hole in the center of the solidified transparent clay sample, respectively injecting the reference mud and the modified mud into the hole, standing to form the mud cake, and implanting the model pile without disturbance. According to the pile foundation mud cake modification test method based on the transparent clay, through five-stage systematic design of preparation, pile sinking, curing, loading and analysis, multiple core values are achieved. In the preparation stage, a homogeneous transparent clay sample and stable slurry system is constructed through quantitative calculation, vacuum mixing and graded consolidation, and the problems that traditional test parameters are fuzzy and samples are not uniform are solved.

This utility model provides a vacuum mixing device for moisturizing emulsions, including a reaction vessel tank and a detachable top cover. The reaction vessel tank and the top cover form a sealed cavity. A first drive motor is installed on the top of the top cover, and a first rotating shaft is installed at the output end of the first drive motor. The first rotating shaft passes through the top cover and moves within the cavity. Multiple connecting arms are evenly arranged axially at the front end of the first rotating shaft, and scrapers that fit against the inner wall of the reaction vessel tank are fixed on the connecting arms. A second drive motor is installed at the bottom of the reaction vessel tank, and a second rotating shaft is installed at the output end of the second drive motor. The second rotating shaft passes through the reaction vessel tank and moves within the cavity. Multiple stirring rods are evenly distributed axially on the second rotating shaft, and curved guide plates are installed on the multiple stirring rods. A stirring plate is fixedly installed at the front end of the stirring rods. The first rotating shaft and scrapers rotate counterclockwise, and the second rotating shaft and stirring rods rotate clockwise, so as to achieve efficient mixing of materials within the cavity.

This invention provides a high-precision cremated remains keepsake based on die casting and its preparation method, belonging to the field of funeral keepsake technology. Addressing the problems of low precision, poor efficiency, high cost, and difficulty in large-scale production in existing cremated remains keepsake molding processes, this invention designs a suitable die casting process based on the characteristics of calcium phosphate (CaP), the main component of cremated remains. This process includes raw material pretreatment, vacuum mixing, mold pretreatment and die casting, demolding and curing, and fine processing steps: the cremated remains are dried and secondarily ground to 150–200 mesh without any sieving; they are then vacuum mixed with a bio-based or inorganic binder in a specific ratio; die-cast under preset temperature and pressure parameters; and finely processed after targeted curing and maintenance. The keepsake prepared by this invention has a density ≥92%, excellent strength, exquisite appearance, and can achieve complex shapes. Furthermore, the process is stable and controllable, with no harmful residues, good biocompatibility, and is suitable for large-scale industrial production.

The invention relates to the technical field of welding materials, and particularly discloses a halogen-free soldering tin material and a preparation method thereof. The soldering tin material comprises solder alloy powder and halogen-free scaling powder; the solder alloy powder comprises Bi, In, Ag, Cu, rare earth elements Y and Sn; the halogen-free scaling powder comprises hydrogenated rosin, a thixotropic agent, a corrosion inhibitor, a catalytic adsorbent, a composite organic acid active agent and the balance solvent. The preparation method comprises the steps of surface grafting synthesis of the catalytic adsorbent, scaling powder preparation, alloy powder atomization and vacuum mixing. According to the scheme, through a new mechanism of adsorption-catalysis-slow release, on the premise that no halogen is completely generated, excellent wettability, extremely low welding spot voidage, high-strength interface connection and excellent thermal fatigue resistance and corrosion resistance are synchronously achieved, welding spots are full and bright after welding, no tin beads exist, and the welding quality is improved. The balance problem of halogen-free welding among activity, reliability and manufacturability is comprehensively solved.

The invention relates to the technical field of mixing equipment, in particular to a material vacuum mixing mechanism and freeze-drying production equipment comprising the same, the material vacuum mixing mechanism comprises a base and further comprises a differential mixing assembly, and the differential mixing assembly comprises a plurality of first pressure plates arranged in a mixing tank; the material pressing mechanism is used for driving the second material pressing plate to periodically move towards the direction of the second material pressing plate when rotating; the material turning mechanism comprises a plurality of second material turning plates arranged in the mixing tank, the second material turning plates move between the first material pressing plate and the second material pressing plate, and the first material turning plate turns to the upper surface of the second material pressing plate from the horizontal state. The differential mixing assembly is arranged in the mixing tank, the mixing efficiency is improved through the first pressing plate and the second pressing plate which are opposite in rotating direction, meanwhile, the second pressing plate can be driven to float up and down in the mixing process, the mixing range can be widened, and the grinding effect is achieved; and surrounding materials are pushed between the two material pressing plates and are matched with each other, so that the mixing efficiency is further improved.

The utility model relates to the technical field of food processing equipment, in particular to a beef vacuum mixing device which comprises a rack, a containing assembly, a stirring assembly, a vacuum assembly and a fixing assembly. The containing assembly is arranged on the rack, the containing assembly comprises a stirring tank body, an upper cover and a flexible sealing ring, the stirring tank body is provided with a containing tank, the stirring tank body is hinged to the upper cover in a covering mode, and the flexible sealing ring is arranged between the stirring tank body and the upper cover; a main body of the stirring assembly is arranged in the containing groove, and the stirring assembly is used for mixing materials; the fixing assembly is arranged on the upper cover and the stirring tank body and forces the upper cover and the stirring tank body to extrude the flexible sealing ring; the vacuum assembly is fixedly arranged on the rack. In the application, the relative positions of the upper cover and the stirring tank body are fixed by utilizing the fixing assembly, so that the upper cover and the stirring tank body extrude the flexible sealing ring to ensure the sealing performance of the accommodating assembly; therefore, the beef is mixed in a vacuum environment, so that the texture and flavor of the beef product are improved.

This invention relates to the field of welding materials technology, specifically disclosing a halogen-free solder material and its preparation method. The solder material comprises solder alloy powder and a halogen-free flux; the solder alloy powder includes Bi, In, Ag, Cu, rare earth element Y, and Sn; the halogen-free flux includes hydrogenated rosin, a thixotropic agent, a corrosion inhibitor, a catalytic adsorbent, a composite organic acid activator, and a balance solvent. The preparation method includes surface grafting synthesis of the catalytic adsorbent, flux formulation, alloy powder atomization, and vacuum mixing. This method, through a novel adsorption-catalysis-slow release mechanism, simultaneously achieves excellent wettability, extremely low solder joint void ratio, high-strength interfacial bonding, and outstanding resistance to thermal fatigue and corrosion, all while ensuring complete halogen-free soldering. The resulting solder joints are full, bright, and free of solder beads, comprehensively solving the balance problem between activity, reliability, and processability in halogen-free soldering.

The utility model relates to the technical field of gel forming equipment, and discloses hydrogel forming equipment which comprises an electric rotating frame body, a vacuum stirring tank body is arranged on the inner side of the electric rotating frame body, an observation window is fixedly installed in the vacuum stirring tank body, and a vacuum stirring tank cover is arranged on the top of the vacuum stirring tank body. A sealing cover is fixedly mounted at the top of the vacuum stirring tank cover, a vacuumizing connection pipe is arranged on the left side of the vacuum stirring tank cover, inserting stirring mechanisms are arranged at the top and the bottom of the vacuum stirring tank cover, and pushing mechanisms are arranged inside and outside the vacuum stirring tank body. According to the hydrogel forming equipment, through limiting of a limiting groove rod, a stirring rod can rotate, hydrogel raw materials are subjected to gel forming stirring, a push rod is driven by a driving air cylinder and a connecting plate to ascend, and hydrogel deep in the vacuum stirring tank body can be pushed out through a scraping plate, so that the hydrogel can be conveniently taken out; and the convenience of taking out the gel-formed hydrogel is improved.

The application relates to the field of polyurethane sealants, and discloses a fast-curing polyurethane structural adhesive and a preparation method thereof. The fast-curing polyurethane structural adhesive is composed of an A component and a B component, the A component is composed of the following raw materials in parts by weight: isocyanate-terminated polyurethane prepolymer 40-50 parts, heat-conducting filler 0-400 parts, stabilizer 6-10 parts, water-removing agent 0.5-1.5 parts and antioxidant 1-3 parts; and the B component is composed of the following raw materials in parts by weight: polycaprolactone polyol 10-15 parts, polyether polyol 8-12 parts, heat-conducting filler 0-400 parts, dispersant 1-2 parts and catalyst 0.1-2 parts. The preparation method is that the raw materials of the A component and the raw materials of the B component are respectively subjected to temperature rising and vacuum mixing. The polyurethane structural adhesive has good curing efficiency, adhesion and heat conductivity, can provide sufficient assembly time and adhesion for a power battery pack, can be quickly cured after assembly, and has high assembly efficiency.

The utility model discloses vacuum mixed type drying equipment, which relates to the technical field of drying equipment and comprises a shell, an air pipe, a feeding pipe, a heating bracket, a guide rod, a supporting sleeve and a stirring frame. The guide rod guides and supports the supporting sleeve, the position of the supporting sleeve can slide up and down along the guide rod, and the guide rod is obliquely arranged in the shell, so that the position of the supporting sleeve can be horizontally adjusted in the shell in the process that the supporting sleeve slides up and down along the guide rod; the position of the stirring frame can be adjusted through the horizontal adjustment of the supporting sleeve, so that the stirring frame can perform rotary motion stirring on different radial positions in the shell, and the mixing uniformity of materials can be effectively improved; the heating bracket can be adjusted in a lifting mode, the stirring frame can be driven to ascend and descend when the heating bracket ascends and descends, the stirring frame moves along the guide rod along with the supporting sleeve, and horizontal adjustment movement of the stirring frame can be effectively achieved.

The invention discloses a wear-resistant and corrosion-resistant cable insulating material and a cable preparation method. The insulating material takes a blend of isocyanate modified chlorosulfonated polyethylene (CSM) and polyurethane (PU) as a base material; a composite nano reinforced filler modified by a silane coupling agent KH-550, a polytetrafluoroethylene (PTFE)-polyether-ether-ketone (PEEK) composite wear-resistant agent and a phenol-phosphite composite anti-aging agent are added, and a two-stage vacuum mixing and precise temperature control extrusion process is carried out to prepare the composite wear-resistant material. The cable insulation material aims at solving the problems that an existing cable insulation material is difficult to consider both wear resistance and chemical corrosion resistance in a severe environment and short in service life. The cable is suitable for mobile cables in severe environments such as mining machinery, harbor machinery, engineering vehicles and the like, and has remarkable practicability and economic value.