502results about How to "Easy to wrap" patented technology

The machining tool comprises a base and a clamping device arranged on the base, the clamping device comprises clamping units arranged on the periphery of a workpiece to be machined, and a base for fixing the clamping units is arranged on the base; the clamping unit comprises a box body fixed to the base and an air cylinder arranged on the side, away from a workpiece, of the box body, and a plurality of ejector rod mechanisms pushed by the air cylinder are arranged on the side, close to the workpiece, of the box body. The ejector rod mechanism is of a two-section type and comprises a piston in the middle and a piston rod close to one side of a workpiece, a first cavity is formed between the piston and the piston rod, electrorheological fluid is arranged in the first cavity, and an electrode is arranged on the inner wall of the first cavity; according to the novel machining tool, a workpiece in a complex shape can be clamped through the telescopic ejector rod mechanism, meanwhile, the electrorheological fluid in the first cavity and the electrorheological fluid in the second cavity can be converted into a solid state, stable supporting can be provided, and vibration during machining can be reduced through control of the controller.

The invention belongs to the technical field of concrete, and particularly relates to a concrete hydration temperature rise inhibitor and a preparation method and application thereof. The concrete hydration temperature rise inhibitor is of a core-shell structure composed of an inner core and a shell layer. Wherein the core comprises a porous material and a hydration temperature rise inhibition material loaded on the porous material, and the hydration temperature rise inhibition material comprises 2-phosphonobutane-1, 2, 4-tricarboxylic acid, modified starch, 1-hydroxyethylidene-1, 1-diphosphonic acid, sodium polyacrylate and cellulose ether. The concrete hydration temperature rise inhibitor has an efficient hydration heat inhibition effect, the proportion of a hydration temperature rise inhibition material in the inhibitor is large, meanwhile, an exothermic temperature peak can be accurately inhibited, and no negative influence is caused to a hydration induction period.

The invention relates to the technical field of dispersing agents for ceramics, and discloses a preparation method of a dispersing agent for ceramics, and the novel dispersing agent for ceramics is prepared by taking methoxypolyethylene glycol, bromoacetyl bromide, 4-hydroxyphthalic anhydride, 2, 4, 6-diethanolamine amino-1, 3, 5-s-triazine and the like as raw materials. The polyether polyol contains a plurality of carboxyl groups, has strong interaction with the surface of ceramic powder such as aluminum oxide, has a star-shaped multi-arm polyether molecular chain, can well coat the aluminum oxide powder, can effectively inhibit the growth of crystal nucleus particle size of the aluminum oxide powder, reduces the particle size of the aluminum oxide, and avoids agglomeration and sedimentation of the aluminum oxide; the modified aluminum oxide ceramic powder has good activation degree in solvents such as water, ethanol, dichloromethane or N, N-dimethylformamide and the like, is lower in settling volume and shows excellent dispersing performance.

The invention discloses high-scratch-resistance water-based double-component matte solid color finish paint which comprises a component I and a component II, and the component I is prepared from the following raw materials in percentage by weight: 50-60% of matrix resin, 0.1-1% of a defoaming agent, 1-5% of a coalescing agent, 0.1-0.5% of a wetting dispersant, 1-5% of a delustering agent, 0.1-1% of a thickening agent, 20-40% of color paste, 0.1-0.5% of a mildew preventive and the balance of water, the component II at least comprises a curing agent. The combination of the water-based matte polyurethane emulsion and the water-based hydroxyl acrylic acid dispersion is adopted as matrix resin, and a prepared paint film has low glossiness, is high in drying speed on the surface of woodware, good in adhesive force with the woodware and excellent in scratch resistance and has self-extinction performance.

The utility model discloses an online coping winding machine, which belongs to the technical field of packaging equipment, and comprises a base, a mounting rack and a rotary conveying table are respectively arranged at the tops of two ends of the base, a frame is arranged on one side of the mounting rack, a winding mechanism is arranged on the frame, and the rotary conveying table is arranged on the other side of the mounting rack. A lifting mechanism is arranged in the mounting frame and connected with the frame, a lifting air cylinder can be used for being matched with a linear sliding rail, goods can be pressed and fixed, the winding mechanism and the lifting mechanism are additionally arranged, automatic winding and packaging of the goods can be achieved, and meanwhile under the cooperation of a butt clamping mechanism and a heat insulation rod on a swing arm, the goods can be automatically wound and packaged. The automatic film cutting function can be achieved, the problems that traditional packaging wastes time and labor and safety of a production workshop cannot be guaranteed are solved through the whole operation, the packaging stability of the loose materials is guaranteed, and the rapid, stable and efficient packaging process is achieved.

The invention provides ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from cement, silica fume, mineral powder, fly ash, coarse sand, fine sand, a high-performance water reducing agent, a defoaming agent, a retarder, water, steel fibers, modified nano-silica sol and a wetting agent. Wherein the modified nano silicon dioxide sol is prepared by the following method: reacting a double-bond-containing silane coupling agent with unsaturated olefine acid to obtain a carboxyl-containing silane coupling agent, and then performing graft modification on the nano silicon dioxide sol by using the carboxyl-containing silane coupling agent to obtain the modified nano silicon dioxide sol. The concrete disclosed by the invention is compact in internal structure, ultrahigh in compressive strength and breaking strength and high in durability and impact resistance, and the compressive strength during normal-temperature curing is stabilized to be 200MPa or above.

The invention provides a secondary sizing agent as well as a preparation method and application thereof. The secondary sizing agent comprises the following components: a main film-forming agent, an auxiliary film-forming agent, a lubricant, a silane coupling agent and water, wherein the main film-forming agent is an aqueous epoxy solution, the auxiliary film-forming agent comprises a low molecular weight epoxy emulsion and an aqueous polyurethane emulsion, and the lubricant comprises an organosilicon lubricant and an ionic lubricant. In the scheme, the secondary sizing agent formed by mixing the main film-forming agent, the auxiliary film-forming agent, the lubricant and the silane coupling agent with proper types and proper contents can endow the silicon carbide fiber with excellent wear resistance, folding resistance and mechanical properties. Compared with one-time sizing, the number of times of wear resistance of the fiber yarn is increased by more than 10 times, the yarn breaking rate in the fabric processing process is greatly reduced from 10% to 0.5%, the surface smoothness of the prepared fiber fabric is greatly improved, the performance of the composite material prepared through the impregnation method is integrally improved, the bending strength is obviously improved, and the performance requirement of the three-dimensional fabric can be completely met.

The invention discloses a Trop2 targeting chimeric antigen receptor macrophage as well as a preparation method and application thereof. The macrophage contains a specific CAR (chimeric antigen receptor) targeting Trop2 and a blocking agent for blocking an immunosuppression signal; the amino acid sequence of the Trop2 specific CAR targeting the breast cancer is as shown in SEQ ID NO. 1; the nucleotide sequence of the mRNA of the specific CAR of the targeted Trop2 is as shown in SEQ ID NO. 2. According to the invention, LNP is adopted to co-deliver CAR mRNA and TLR agonists, and macrophages are edited in vivo to generate CAR-macrophages expressing Trop2 in situ, so that a tedious engineering cell in-vitro preparation process is omitted, and potential whole-body toxic and side effects caused by immune cell system reinfusion are avoided.

The invention discloses a coaxial superconducting joint structure suitable for a CICC conductor and a preparation method, and belongs to the technical field of superconducting magnet joint design and manufacturing. The two stainless steel tubes are respectively arranged at the tail end core parts of the two CICC conductors, the tail end axes of the two stainless steel tubes are aligned, and the end parts are tightly attached; the two copper pipes sleeve the peripheries of the two CICC conductor tail end superconducting cables, the tail end axes of the two copper pipes are aligned, and the end parts of the two copper pipes are tightly attached; the indium conducting layer is wound on the peripheries of the two copper pipes; the four fan-shaped copper sheets jointly wrap the periphery of the indium conducting layer; the two stainless steel shells wrap the peripheries of the four fan-shaped copper sheets, and the two ends of the two stainless steel shells are connected with the stainless steel armors at the tail ends of the two CICC conductors respectively. The CICC coaxial connector has the advantages that coaxial connection between the two CICC conductors is achieved, the occupied radial space is small, and the arrangement requirement of a narrow space is met. The superconducting joint structure has excellent resistance characteristics and low alternating current loss.

The invention discloses a three-dimensional protective bamboo composite sleeper and a manufacturing method thereof. The manufacturing method comprises the steps that S1, raw bamboos are processed into radial bamboo skin units; s2, the radial bamboo skin units which are not subjected to rolling or rolling treatment are subjected to glue applying treatment, and after glue draining, the radial bamboo skin units are dried to obtain glue; s3, the glued and dried radial bamboo skin units are assembled and pressed, and a pressed blank is obtained; s4, the pressed blank is cured, and a bamboo sleeper blank is obtained; s5, the bamboo sleeper blank is machined into the target size and shape, and a bamboo sleeper base body is obtained; and S6, the bamboo sleeper base body is directly subjected to protection treatment without nicking treatment, and the three-dimensional protection bamboo composite sleeper is obtained. The radial bamboo skin units which are not subjected to rolling or rolling treatment are used as raw materials, gaps are formed between the radial bamboo skin units during assembly and pressing, protective paint can permeate conveniently, the protection durability is improved, the cost is reduced, protection treatment is not needed after special nicking treatment, and the manufacturing process is simpler.

The invention belongs to the technical field of medicines, and discloses photosensitizer-entrapped tumor cell membrane bionic metal organic framework nanoparticles as well as preparation and application thereof. The photosensitizer-entrapped tumor cell membrane biomimetic metal organic framework nanoparticles are prepared by adopting a tumor cell membrane biomimetic camouflage technology and coating the surface of the metal organic framework nanoparticles with the photosensitizer through repeated membrane extrusion or ultrasonic treatment. The preparation process is simple, the cost is low, and a complex synthesis process is not needed. The bionic nanoparticle disclosed by the invention has the functions of homologous targeting and immune escape, and is beneficial to prolonging the in-vivo circulation time and realizing higher tumor tissue targeting. In addition, the bionic nanoparticles can kill tumor cells through a photodynamic effect, and have the advantages of good therapy and low toxic and side effects.

The invention relates to the technical field of concrete admixtures, in particular to a high-performance polycarboxylate superplasticizer and a preparation method thereof. The high-performance polycarboxylate superplasticizer comprises the following components: a polycarboxylate superplasticizer and modified cellulose ether, the polycarboxylate superplasticizer is prepared by polymerization reaction of vinyl polyether macromonomer, unsaturated carboxylic acid and functional monomer under the action of initiator and chain transfer agent. According to the high-performance polycarboxylic acid water reducing agent provided by the invention, the polycarboxylic acid water reducing agent and the modified cellulose ether are compounded and applied to concrete, the initial fluidity of the concrete is good, the slump retaining property is good, the water-retaining property, the wrapping property and the cohesiveness of the concrete are good, and the segregation and bleeding phenomena are avoided when the concrete is mixed with the high-performance polycarboxylic acid water reducing agent.

The invention belongs to the technical field of back contact cells, and particularly relates to a back contact cell with a multi-layer gradient textured structure and a manufacturing method and application of the back contact cell. A second semiconductor opening region further comprises a first platform region and a second platform region which are sequentially arranged from the edge to a non-transition region in the width direction; the first slope area is arranged between the first platform area and the second platform area; the second slope area is arranged between the second platform area and the non-transition area; wherein the first platform area is a polished surface, the second platform area is a pyramid suede surface, the heights of the first platform area, the second platform area and the non-transition area are gradually reduced, and the first platform area, the first inclined surface area, the second platform area, the second inclined surface area and the non-transition area continuously form a multi-layer gradient suede surface structure. According to the invention, the situation that the second semiconductor layer in the second semiconductor opening region cannot well coat the surface and the side surface due to a relatively large height difference can be avoided, and the carrier recombination rate at the boundary is reduced, so that the open-circuit voltage and the cell conversion efficiency are improved.

The invention discloses a preparation method and processing equipment of herbal composite granules, and relates to the technical field of composite granules. Comprising the following components in parts by weight: 15-20 parts of soybean phospholipid, 10-15 parts of glutamine, 10-15 parts of L-arginine, 5-10 parts of a ginseng extract, 5-10 parts of phytosterol, 5-10 parts of xylooligosaccharide, 5-10 parts of inositol, 5-10 parts of a hawthorn extract, 5-10 parts of a blueberry extract, 5-10 parts of an acerola cherry extract, 0-5 parts of yeast beta glucan, 0-5 parts of a sea-buckthorn extract, 0-5 parts of a tartary buckwheat extract, 0-5 parts of haematococcus pluvialis and the like. The composition is innovative and breakthrough in successful application in the aspects of heart and cerebral vessels and anti-aging, and can regulate intestines, protect liver, reduce blood pressure and regulate blood fat; thrombus is melted, the vascular endothelial function is improved, and arteriosclerosis is prevented; meanwhile, the effects of resisting oxidation, resisting inflammation, resisting aging and enhancing immunity can also be achieved.

The invention relates to the technical field of cable processing, in particular to a non-stop disc-changing cutting device for middle-high voltage cable processing, which comprises a control table and a rotating disc arranged on the control table, cutting assemblies are symmetrically arranged on the rotating disc, and each cutting assembly comprises a swinging arm arranged on the rotating disc and a supporting plate arranged on one side of the swinging arm. The fixed rotating shaft is arranged on one side of the supporting plate, the matched clamping knife is arranged on the fixed rotating shaft, the hydraulic rod is arranged on the swing arm, the clamping column is movably arranged at the end, away from the swing arm, of the hydraulic rod, the containing base is arranged on the clamping column, and the cutting knives are symmetrically and movably arranged on the containing base. When the cutting knife cannot smoothly cut off the cable, the function of automatically replacing the cutting knife is achieved, meanwhile, in the whole process, the replaced cutting knife can conduct reverse cutting, the whole cable cutting difficulty is lowered, and the situation that the cutting knife makes contact with a previous cable cutting face is avoided.

The utility model discloses an open gas protection integrated high-frequency coil, which relates to the field of high-frequency coil welding and comprises an induction body, the induction body is mounted on a power supply base, and power is supplied to the induction body through the power supply base; a first isolation belt and a second isolation belt are sequentially formed in an inner cavity of the induction body from outside to inside, a water flow cavity is formed between the outer wall of the first isolation belt and the inner wall of the induction body, and the water flow cavity achieves water flow circulation through an external water inlet pipe and an external water outlet pipe. An air flow cavity is formed between the inner wall of the first isolation belt and the outer wall of the second isolation belt, the water flow cavity and the air flow cavity are separated through the first isolation belt, the bottom of the air flow cavity is connected with an air inlet pipe used for introducing shielding gas, and a welding induction hole is formed in the inner side of the second isolation belt in a penetrating mode and used for placing a welding part; and the airflow cavity is communicated with the welding induction hole. According to the utility model, only one group of open-type high-frequency coils is needed to realize synchronous heating and shielding gas introduction.

The invention provides efficient flame-retardant porous ceramic and a preparation method thereof, and relates to the technical field of inorganic non-metallic materials. The preparation method comprises the following steps: S1, mixing polydimethyl silicone oil with polydimethyl silicone rubber to obtain an organic precursor; s2, immersing the organic-inorganic hybrid fiber into a solution containing modified nano silicon dioxide to obtain a porous reinforcement; s3, ceramic fibers are added into a dispersion system, ceramic slurry is formed, and the dispersion system comprises a dispersing agent, a flame retardant and starch and silicon oxide fibers; dispersing the porous reinforcement into the ceramic slurry, adding the ceramic slurry into the organic precursor, and carrying out ultrasonic homogenization treatment to obtain mixed slurry; and S4, injecting the mixed slurry into a mold, carrying out vacuum filtration, drying to obtain a ceramic body, sintering the ceramic body in a high-temperature furnace, and naturally cooling to obtain the efficient flame-retardant porous ceramic. The preparation method can be used for preparing the porous ceramic with high strength, high porosity and high flame retardance.

According to the valve used in the low-temperature environment, the electric heating wire is wound on the valve, when the temperature of the using environment of the valve is lower than the temperature of water freezing, the temperature sensor transmits a signal to the controller, the controller controls the electric heating wire to be powered on, and the temperature in the installation space rises after the electric heating wire is powered on; by means of the structure, it can be guaranteed that water in the valve cannot be frozen under the condition that the outside air temperature is low, normal use of the valve is guaranteed, it is guaranteed that the valve cannot be frozen to crack, the installation space can be filled with heat preservation filler through seasoning openings formed in the first shell and the second shell, and the service life of the valve is prolonged. And a heating layer is constructed for the valve through the joint work of the heat preservation filler in the mounting space and the electric heating wire, so that the integrity of the valve can be further ensured, and the valve can be continuously used.

The invention discloses a water-resistant and friction-resistant water-based art paint and a preparation method thereof, and belongs to the technical field of water-based paints.The preparation method comprises the steps that hydroxyl-terminated polydimethylsiloxane is added into a polyisocyanate and polyether polyol reaction system, a polyurethane prepolymer is synthesized, epoxy resin is added for modification, neutralization is conducted through a neutralizer, and the water-resistant and friction-resistant water-based art paint is obtained. Emulsifying by using a mixed solution of ice water and water-based alkyd resin to obtain a modified polyurethane emulsion; and adding other auxiliaries such as natural pigments to obtain the water-resistant and friction-resistant water-based art paint. The water-based art paint provided by the invention has excellent wear resistance, strong adhesive force, gloss retention and good water resistance, does not use toxic and irritant solvents in the synthesis process, does not cause pollution to the environment, and has a wide application prospect.

According to the preparation method of the phosphorus-nitrogen composite carrier-free flame-retardant master batch provided by the invention, before the carrier-free master batch is prepared, a powder flame retardant is subjected to coating modification treatment, so that the compatibility of the powder flame retardant and a base material can be improved, and especially for a hydroxide or oxide acid acceptor, the deterioration effect of the hydroxide or oxide acid acceptor on the material can be remarkably relieved through the coating modification treatment of the powder flame retardant. On the other hand, the physical properties of main components (organic phosphinate and polyphosphate are weakly acidic) and weak acid of the compound flame retardant are blended to a certain extent, and the organic phosphinate and polyphosphate are respectively coated with double layers of coating materials, so that the interaction between the organic phosphinate and polyphosphate can be weakened, the abrasion of the weak acid to equipment is relieved, and the service life of the equipment is prolonged. And the physical properties of the base material can be better maintained.

The utility model provides a winding mechanism of a winding machine, and relates to the technical field of winding mechanisms, the winding mechanism comprises a rack, a winding mechanism is arranged on the surface of the rack, the winding mechanism comprises a rotating rod, the surface of the rotating rod is rotatably connected with a supporting plate through a bearing, the surface of the rack is rotatably connected with a positioning rod through a bearing, and the supporting plate is connected with the positioning rod through a bearing. A first gear is arranged on the surface of the positioning rod, clamping grooves are formed in the two ends of the rotating rod, clamping blocks are connected to the surfaces of the two clamping grooves in a clamped mode, connecting rods are arranged on the surfaces of the two clamping blocks, a second gear is arranged on the surface of one connecting rod, and the second gear is connected with the first gear in a meshed mode. The winding mechanism is arranged, the clamping block is arranged, the position of the winding roller can be fixed, the arranged supporting plate drives the winding roller to rotate, and the initial end of a thin film can be wound on the winding roller conveniently.

The invention discloses an electronic mechanical brake of a commercial vehicle, which aims at an existing commercial vehicle brake system and replaces an original brake chamber structure on the basis of not changing an original caliper structure. The brake comprises a brake traveling cavity, a force transmission module and a motor driving module which are connected in sequence, and the force transmission module is used for transmitting driving force transmitted by the motor driving module to the brake traveling cavity so as to drive braking of brake calipers connected with the brake traveling cavity. A brake transmission ejector rod included in the force transmission module and a brake execution push disc included in the brake driving cavity are designed in an arc surface fit mode and used for generating a maximum swing included angle of + / -4 degrees. The system meets the requirement for swing of + / -4 degrees and the braking requirement for large travel of an axial push rod of a commercial vehicle, has the advantages of being high in braking efficiency, high in universality and the like, and facilitates large-scale popularization due to the adoption of modular design.

The invention discloses an electric wire and cable core wire coating device and method in the technical field of electric wire and cable core wire coating, in the process of coating a cable core wire, a driving motor, a first driving wheel and a second driving wheel are utilized, so that the conveying speed of the cable core wire is related to the winding speed, and the winding speed of the cable core wire is related to the winding speed. The wrapping material can better wrap the cable core wire, the wrapping effect of the wrapping material on the cable core wire is guaranteed, the situation that the wrapping speed of the cable core wire cannot be changed when the conveying speed of the cable core wire is changed in the winding and wrapping process of the cable core wire is avoided, and the wrapping speed of the cable core wire cannot be changed when cable core wires with different thicknesses are replaced. A clamping rod, a telescopic plate and a pulling plate are used for enabling a second driving wheel to move and adjust the contact position with a driving ring, the side face of the driving ring is an inclined face, after the contact position of the second driving wheel and the driving ring is changed, the diameter of the contact position of the second driving wheel and the driving ring can be changed, and the transmission ratio of the second driving wheel and the driving ring can be changed along with the change.

The invention discloses a high-voltage lithium manganese iron phosphate positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium battery materials. The preparation method comprises the following steps: 1) preparing a mixed solution containing a soluble phosphate compound, soluble bivalent iron salt and soluble bivalent manganese salt; 2) adding a high-boiling-point organic solvent; 3) dropwise adding the lithium hydroxide solution into the mixed solution step by step, carrying out solvothermal reaction under the normal pressure condition, filtering, washing and drying; 4) spray drying and high-temperature calcination treatment; according to the method, the rice-grain-shaped lithium manganese iron phosphate nano-particles with the nano-scale particle size, uniform distribution, good crystallinity and high purity can be successfully prepared under normal pressure, the lithium manganese iron phosphate positive electrode material synthesized by adopting the nano-particles as the precursor can maintain high discharge voltage, so that the energy density of a battery is improved, the synthesis process is simple and novel, and the method is suitable for industrial production. The safety and reliability are high.

The invention discloses an early-strength polycarboxylate superplasticizer with thickening and water-retaining properties and a preparation method thereof, and relates to the technical field of building materials. The early-strength polycarboxylate superplasticizer is prepared from the following components in parts by weight through free radical copolymerization and condensation polymerization: 360 parts of polyether monomer, 20-40 parts of unsaturated carboxylic acid, 0.1-0.5 part of hydrophobic monomer, 1-30 parts of functional additive, 0.5-3 parts of oxidant, 0.1-1 part of reducing agent, 0.5-2 parts of chain transfer agent and 270-460 parts of water. The invention also provides a preparation method of the water reducing agent. By adjusting the structure of the polycarboxylic acid water reducing agent and grafting functional groups with bonding capacity and early strength function, the water reducing agent which is good in application performance and high in water reducing rate is prepared, and the water reducing agent can remarkably improve the wrapping property of concrete, reduce the bleeding property of the concrete and improve the early strength of the concrete.

The utility model discloses an adjustable multifunctional ergonomic chair which comprises a chair seat, the lower surface of the chair seat is fixedly connected with a connecting frame, the back surface of the connecting frame is fixedly connected with a mounting plate, the inner wall of the mounting plate is in threaded connection with a screw rod, one end of the screw rod is movably connected with a limiting sleeve, and the other end of the screw rod is movably connected with a connecting rod. According to the adjustable multifunctional ergonomic chair, the rotating handle is pinched by hands, the screw rod is rotated, so that the tail bone support moves forwards or backwards on the chair seat, the tail bone support is adjusted to a proper position, a user can sit on the cushion of the chair seat at the moment, the protruding part of the cushion can be attached to the tail bone support, and therefore the user can sit on the adjustable multifunctional ergonomic chair. After a user sits down, the raised line on the tail bone support is just located at the position of a hip groove and is attached to the tail bone for supporting, and the arc-shaped block on the tail bone support is used for supporting the bottom of the lumbar vertebra, so that the bottom of the lumbar vertebra and the spine tail bone of the user of the ergonomic chair are supported, waist ache after long-time sitting is reduced, and the spine tail bone is prevented from being damaged.

The invention relates to the technical field of silicon-carbon precursors, in particular to a mesoporous resin-based silicon-carbon precursor preparation method which comprises the following steps: selecting a mesoporous resin raw material, treating to obtain primary treated resin, selecting a silica raw material, treating to obtain primary treated silica, and preparing a first mixture for later use, thereby obtaining the mesoporous resin-based silicon-carbon precursor. Carrying out mixing treatment on the primarily treated resin and the first mixture to obtain a first standby material, preparing a second mixture for later use, carrying out mixing treatment on the primarily treated silica and the second mixture to obtain a second standby material, and carrying out mixing treatment on the first standby material and the second standby material to obtain a mesoporous resin-based silicon carbon precursor; the silica raw material and the mesoporous resin raw material are primarily treated to enhance the compatibility of the silicon powder and the primarily treated resin, so that the prepared mesoporous resin-based silicon carbon precursor has better specific surface area performance, and the use performance of the precursor in the subsequent preparation process is improved.

The invention discloses easy-to-scatter and easy-to-regenerate precoated sand and a preparation method thereof, and belongs to the technical field of precoated sand preparation, and the easy-to-scatter and easy-to-regenerate precoated sand comprises the following components in parts by weight: 1000 parts of steel shots, 7-10 parts of phenolic resin, 2.9-4.5 parts of urotropine aqueous solution and 4.9-7.5 parts of calcium stearate. The cast aluminum precoated sand and the preparation method thereof have the beneficial effects that the cast aluminum precoated sand is prepared by adopting the steel shot with the angular coefficient closer to 1, good flowability, good thermal conductivity and low cost as the crude sand, and the problems that in the prior art, the cast aluminum precoated sand is high in production cost, and a resin coating is uneven in distribution are solved.

The invention belongs to the technical field of beam stranding machines, and particularly relates to a copper conductor beam stranding machine which comprises a workbench, a first supporting plate is fixedly connected to the right side of the upper end face of the workbench, a first rotating disc is rotatably arranged on the upper side of the left end face of the first supporting plate, and first clamping plates are slidably connected to the two sides of the left end face of the first rotating disc. A second rotating disc is rotationally arranged on the right end face of the connecting plate, second clamping plates are slidably connected to the two sides of the right end face of the second rotating disc, and an anti-winding type placing mechanism for placing the bunch-stranded copper wires is arranged on the workbench. According to the invention, by using the anti-winding placement mechanism, when a group of copper conductors are twisted, the wiring terminals fall onto the placement seat for placement, so that the process of manually taking down each group of twisted copper conductors by a worker is omitted, the labor intensity of the worker is reduced, and each group of copper conductors are independently placed and cannot be wound with each other, so that the production efficiency of the wiring terminals is improved. And subsequent unified transportation is facilitated.

The invention relates to the field of marine food manufacturing, in particular to high-protein-content soy sauce and a preparation method thereof, and the high-protein-content soy sauce comprises the following raw materials: laminarin, modified anthocyanin, compound protein, docosahexaenoic acid, astaxanthin, taurine, carrageenan, beta-amylase, soybeans, salt and purified water. The laminarin, the modified anthocyanin and the compound protein play a role through a synergistic effect, the compound protein in the soy sauce is wrapped by the modified anthocyanin to form a compound, a laminarin film is tightly attached to the outer layer of the compound formed by the modified anthocyanin, and the wrapping capacity and the structural stability of the compound are further enhanced; meanwhile, the oxidation process of fat and protein in the soy sauce is slowed down, the modified anthocyanin and a laminarin film interact to maintain the protein content in the soy sauce, laminarin, the modified anthocyanin and compound protein form a dynamic balance system, the nutritional value and quality of the soy sauce are improved, and the soy sauce with high protein content is provided.