1181results about How to "Reduce viscosity" patented technology

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention relates to a weight-losing enzyme and a preparation method thereof, and belongs to the technical field of biology, and the weight-losing enzyme comprises a fruit enzyme, a vegetable enzyme, a seed enzyme and a lotus leaf extract; the fruit enzyme is obtained by performing enzymolysis on mixed fruit pulp of apples, lemons, grapefruits and haws through pectinase, performing enzymolysis through pepsase and performing co-fermentation through bifidobacterium longum and lactobacillus acidophilus; the vegetable enzyme is obtained by performing enzymolysis on mixed vegetable pulp of wax gourd pulp, celery and spinach through pectinase, performing enzymolysis through pepsin and performing fermentation through lactobacillus plantarum and bifidobacterium adolescentis; the seed enzyme is obtained by carrying out trypsin enzymolysis on mixed powder of semen raphani and phaseolus calcaratus, then carrying out nattokinase enzymolysis and then fermenting with bifidobacterium breve; the lotus leaf extract is obtained by sequentially carrying out enzymolysis on lotus leaves through hemicellulase, snail protease and nattokinase. All the components are matched for use, so that the weight-losing food has the effects of promoting digestion, inhibiting fat absorption, regulating intestinal flora, promoting metabolism and the like, and has a good weight-losing effect.

The invention belongs to the technical field of magnesium battery electrolytes, and discloses a magnesium battery electrolyte containing an insoluble additive and an application of the magnesium battery electrolyte, the insoluble indium additive is added into the magnesium electrolyte, such as In2O3 nano-particles, In2 (SO4) 3 nano-particles and nano In powder, and the insoluble indium additive is added into the magnesium electrolyte. The non-functionalized sites on the nano-particle cores interact with anions in the magnesium electrolyte to generate a synergistic effect, so that the anions in the electrolyte are fixed, the migration number of Mg < 2 + > and the ion utilization rate are increased, and transmission of magnesium ions is accelerated. The magnesium battery suspension electrolyte is simple in preparation process, low in viscosity and good in stability, the internal resistance of the battery is reduced, the performance of the battery is improved, and the cycle life of the battery is prolonged.

The invention belongs to the technical field of civil engineering materials, and provides an early-strength high-fluidity geopolymer grouting material and a preparation method thereof. The method comprises the following steps: firstly, carrying out heat treatment and chemical regulation on fly ash and granulated blast furnace slag to generate a pre-reaction phase with high reaction activity, and improving the alkali excitation reaction efficiency; then, by preparing a lubricating particle dispersion liquid and utilizing the synergistic effect of a silane coupling agent and interface lubricating particles, the uniform dispersity of the particles is enhanced; by adding the ionic liquid and the functionalized acylamino polymer, the dissolution and activation of the aluminosilicate are accelerated by utilizing the high polarity, the ion shielding effect and the dissolution enhancing performance of the ionic liquid; meanwhile, the amido polymer inhibits particle aggregation and stabilizes the particle dispersion state through the adsorption effect, the amido polymer and the amido polymer cooperate to form a lubricating layer in the slurry, reduce the viscosity of the slurry and improve the fluidity, and the early strength of the material is further improved by accelerating the generation of a gel phase.

The present invention discloses a high-drying high-pressure belt-type sludge dewatering machine, comprising a flocculation tank, a concentrated primary filter belt device, a skeleton agent automatic feeding device, a modifier feeding device, a mixing device, a mud homogenizing device, and a high-pressure filter belt device; the mixing device comprises a mixing bin, a mixing and stirring mechanism and a modifier spraying assembly arranged in the mixing bin, the sludge sent out of the outlet of the sludge primary filter belt assembly is fed into the sludge input port through a sludge input pipe, and the skeleton agent automatic feeding device inputs the skeleton agent into the mixing bin through the sludge input port. The sludge dewatering machine of the present invention greatly reduces the moisture content of the sludge output, and can achieve full-automatic continuous operation, integrating all the processing processes into one device, greatly reducing the occupied space, and simplifying the operation process.

The invention relates to the technical field of touch screens, and discloses printing silver paste for a touch screen and a preparation method of the printing silver paste. The prepared silver paste is prepared from silver powder, conductive filler, modified polyurethane resin and an organic solvent as raw materials. Wherein the silver powder and the conductive filler serve as conductive phases, so that the substrate has excellent conductive performance, the hardness, the adhesive force and the thermal stability of the cured silver paste are improved, the use amount of the silver powder is reduced, and the production cost is reduced; and organic silicon is introduced into the modified polyurethane resin, so that the viscosity of polyurethane is reduced, the flowability of the silver paste is improved, and the silver paste is easy to manufacture and process.

The invention discloses a wide crawler walking device suitable for seabed thin and soft geology, which realizes stable walking of a deep-sea heavy-load mining operation platform on a thin and soft substrate through a high-tooth large-width composite material crawler walking mechanism, and provides a power driving guarantee for later operation of a heavy and heavy collection device. The crawler walking module is used for providing enough traction force for the mining vehicle, so that the mining vehicle can normally run on the complex bottom surface of the seabed. A crawler walking device is located in a chassis, the overall width of a vehicle body is reduced, a main beam of the chassis penetrates through trolley frames on the two sides, chassis secondary beams are welded to outer side panels of the trolley frames, the bearing capacity of the chassis is improved, the trolley frames are of a simple frame structure, and through holes and open grooves are machined in left and right outer side plates of the trolley frames and used for installing driving wheels, guide wheels and bearing wheels. Welding or bolt connection of other wheel train installation type structural parts is omitted, the lightweight design is met, and the structural strength is enhanced.

The invention provides an epoxy resin composition, a preparation method thereof and a composite material. The epoxy resin composition comprises the following raw material components in parts by mass: 50-100 parts of a resin matrix; 11 to 15 parts by mass of thermoplastic toughening particles; 25-35 parts by mass of an aromatic amine curing agent; 2-8 parts by mass of a reactive diluent; and the molar ratio of the amino group in the aromatic amine curing agent to the epoxy group in the resin matrix is 1.0-1.3. By adjusting the content of each raw material component in the epoxy resin composition, the content of the thermoplastic toughening particles, the resin matrix and the aromatic amine curing agent is in a proper range, and the molar ratio of amino in the curing agent to epoxy group in the resin matrix is controlled. Therefore, the polymer formed by the resin composition has good strength and toughness. Besides, the reactive diluent can reduce the viscosity of the resin matrix, so that the thermoplastic toughening particles can be well dispersed in the resin matrix in the dispersion stage, and the impact resistance of a polymer formed by the resin composition is improved.

The invention relates to the technical field of chemical reaction equipment, in particular to a reaction device for synthesizing high-molecular N-halamine resin, which comprises a viscosity adjusting mechanism, the viscosity adjusting mechanism comprises a detection plate for detecting viscosity, a first permanent magnet is embedded in the detection plate, a second permanent magnet is magnetically adsorbed by the first permanent magnet, and a second permanent magnet is embedded in the second permanent magnet; the top end of the second permanent magnet is provided with a magnetism isolating plate, and the top end of the magnetism isolating plate is fixedly connected with a conducting strip. The viscosity of the resin is fed back by detecting the movement distance of the detection plate, when the viscosity of the resin is increased, the friction force between the resin and the detection plate is also increased, the detection plate moves towards the side away from the connecting spring, and the movement drives the second permanent magnet and the conducting strip to slide on the resistance plate. And through a current monitor in the PLC, the current change of the slide rheostat can be detected, so that the viscosity of the resin is monitored in real time.

The invention provides an asphalt solid-phase composition for coating, a modified asphalt coated natural graphite negative electrode material, preparation of the modified asphalt coated natural graphite negative electrode material and a lithium ion battery, and the asphalt solid-phase composition for coating is used for forming an amorphous carbon coating layer coated on the surface of natural graphite and comprises coated asphalt and a modification additive, the mass ratio of the natural graphite to the coated asphalt to the modification additive is 1000: (45-80): (3-12); the modification additive comprises a saturated long-chain component, a low-molecular wax component and a component containing a modification group in a mass ratio of (2-10): (0.5-5): (0.5-7). By adding the modification additive, the softening point and viscosity of the asphalt are reduced, the wetting contact property of the asphalt to graphite is improved, the density and uniformity of a coating layer are improved, and the electrochemical performance of the natural graphite negative electrode material is further improved. The negative electrode material provided by the invention has higher first-cycle coulombic efficiency, better cycle performance, lower impedance and lower specific surface area under the condition of low asphalt addition amount.

The utility model relates to the technical field of falling film evaporation and concentration, in particular to a novel efficient anti-blocking falling film evaporator. Comprising an evaporator shell and a heat exchange mechanism, a material channel and a steam channel are arranged on the evaporator shell, the heat exchange mechanism is a heat exchange pipe, the heat exchange pipe is arranged in the evaporator shell, and a spiral angle is preset on the heat exchange pipe. According to the novel efficient anti-blocking falling film evaporator, the heat exchange pipes are efficient heat exchange pipes, the spiral angle structures on the surfaces of the heat exchange pipes enable the flowing direction of a liquid film to be repeatedly changed to cause sufficient heat exchange between the interiors of the liquid film, meanwhile, the thickness of the liquid film is more uniform, and the formed spiral shearing effect can reduce the viscosity of materials; liquid film turbulent flow is generated at a low flow rate, scabbing in the pipe is effectively prevented, the spiral angle on the surface of the pipe can increase the flow distance of the slurry, and the flow heat exchange time is prolonged under the condition that the flow rate is not changed, so that the evaporation concentration efficiency is higher.

The utility model discloses a preheating system for low-temperature starting of a diesel automobile. The preheating system comprises a sensing module, a preheating module and a control module, wherein the sensing modules are fixedly arranged inside and / or outside a diesel automobile body respectively; the preheating modules are respectively and fixedly arranged near and / or inside a diesel automobile cooling system, an intake manifold and a gearbox; the control module is fixedly arranged in a vehicle-mounted electronic system of the diesel automobile; the control module is used for receiving input signals such as temperature and pressure obtained by the sensing module, automatically controlling the preheating module to preheat intake air, an engine cylinder body and a gearbox of the diesel automobile, and automatically adjusting the preheating time and strength, so that the low-temperature starting performance is effectively improved, and meanwhile, the low-temperature starting performance of the diesel automobile is improved. Waste of fuel oil and electric quantity of a storage battery caused by excessive preheating is avoided, in addition, it is ensured that lubricating oil reaches proper viscosity before starting, mechanical abrasion at the moment of starting is reduced, and safe and rapid starting is achieved.

The invention belongs to the technical field of geotechnical engineering, and particularly relates to a nanocarbon reinforced superfine cement-based blocking material as well as a preparation method and application thereof. The superfine cement-based blocking material prepared by the invention is prepared by uniformly mixing 45-50 parts of cement, 0.5-2.5 parts of a solid waste sintered active material, 0-0.05 part of a water reducing agent, 0.015-0.1 part of carbon nanotubes, 0.5-2.5 parts of a 1% solution of carbon quantum dots and 45-50 parts of water. The material has relatively low porosity and is not dispersed; the high groutability is achieved, and the material can permeate into tiny holes; and it is guaranteed that the material has high strength, the crushed rock bonding and reinforcing strength is high, and the material has wide application prospects.

The present invention belongs to the technical field of graphite oxide reduction, and discloses a graphene reduced by graphene oxide, a graphene film and a preparation method thereof. The method comprises the following steps: dispersing graphene oxide in a mixed solution of triethylene glycol to form a graphene oxide dispersion, irradiating with a laser wavelength of 1000 to 1100 nm, washing and drying after the irradiation to obtain graphene. The present invention combines a laser with a wavelength of 1064 nm with a dispersion based on triethylene glycol, which can provide extremely high transient energy for reactants, thereby promoting a deprotonation process and a reduction process, and the prepared graphene is completely reduced, has a large size and few defects.

The recovery method of the laterite-nickel ore leaching residues comprises the following steps that S1, in the presence of a first reducing agent, the laterite-nickel ore leaching residues are roasted, and roasted sand and sulfur-containing tail gas are obtained; s2, in the presence of a second reducing agent, smelting the roasted product obtained in the step S1 to obtain molten iron, smelting slag and coal gas; the laterite-nickel ore leaching residues are in a dry state; the smelting slag is a MgO-Al2O3-SiO2-FeO slag system, and the smelting slag is a MgO-Al2O3-SiO2 The ratio of the total mass of fixed carbon in the first reducing agent to the total mass of sulfur in the laterite-nickel ore leaching residues is 0.35-0.50. According to the recycling method, iron and sulfur in the laterite-nickel ore leaching residues can be comprehensively recycled under the condition that extra flux is not needed, resource utilization of the laterite-nickel ore high-pressure leaching residues is achieved under the condition that the overall process cost is low, and large-scale industrial use is facilitated.

The invention discloses a strain fermentation device which comprises a tank body, a sampling mechanism, a cleaning mechanism and a positioning mechanism, the sampling mechanism is arranged on the tank body, the cleaning mechanism is arranged on the sampling mechanism, the cleaning mechanism is used for cleaning the sampling mechanism, and the positioning mechanism is used for positioning in the sampling process of the sampling mechanism. The sampling mechanism comprises a liquid inlet nozzle, a liquid inlet pipe, a fixed cylinder, a liquid pumping cylinder, a piston and a liquid outlet nozzle, the liquid inlet nozzle is arranged in the tank body, the fixed cylinder is arranged on the tank body and penetrates through the tank body, the liquid pumping cylinder is rotationally arranged in the fixed cylinder, the outer circumferential surface of the liquid pumping cylinder is in contact with the inner circumferential surface of the fixed cylinder, and an outer liquid inlet is formed in the fixed cylinder. The invention relates to the technical field of strain fermentation, in particular to a strain fermentation device. The technical problem to be solved by the invention is to provide the strain fermentation device, so that fermentation liquor is not easy to remain in the liquid pumping cylinder, the probability of deterioration and pollution of the fermentation liquor is reduced, and the sampling accuracy is improved.

The invention belongs to the technical field of traditional Chinese medicine preparation devices, and particularly relates to a production method and device of traditional Chinese medicine composition oral thick paste. Comprising an extract mixing tank, a tank cover is fixedly connected to the top of the extract mixing tank in an inserted mode, a hydraulic lifting rod is fixedly installed on the tank cover, and the telescopic end of the hydraulic lifting rod is fixedly connected with a motor through a connecting frame; a communicating port is formed in the middle of the top of the tank cover in a penetrating manner, and the top of the tank cover further communicates with a feeding port; according to the invention, the water body not only can circularly clean the extract mixing tank to save water, but also can improve the cleaning efficiency and reduce the energy consumption, and the mixing is easier and more uniform; according to the invention, the extractum in the extractum mixing tank can be uniformly mixed, and the problems of low liquidity and easy layering of the extractum are solved; the stirring direction of the stirring mechanism is quickly switched while the lifting effect of the auger blade is not influenced; the traditional Chinese medicine composition prepared by the method has the effects of enhancing immunity, improving sleep quality, relieving pressure and the like.

The invention relates to the technical field of electroslag remelting slag. The invention discloses a special slag system for an ingot pulling type electroslag remelting nitrogen-controlled austenitic stainless steel ingot, which comprises the following components in percentage by mass: 45-50% of CaF2, 25-30% of Al2O3, 15-20% of CaO, 3-6% of MgO, 5-10% of SiO2 and the balance of impurities, and the content of the impurities is less than or equal to 1%. The binary alkalinity CaO / SiO2 is 1.5 to 4; the melting point of the special slag system is 1250-1280 DEG C, the viscosity value of the special slag system at the temperature of 1600 DEG C is 0.044-0.053 Pa.s, and the resistivity of the special slag system at the temperature of 1600 DEG C is 0.51-0.55 omega.cm. According to the slag system, by optimizing the components of the slag system, the physical and chemical properties of the slag system are further improved, the slag-metal reaction is inhibited, and the production process requirements of ingot pulling type electroslag remelting large stainless steel ingots are met. The produced nitrogen-controlled austenitic stainless steel ingot is good in surface quality and free of defects such as obvious pits, slag runners and double skins; and easily oxidized elements Al and Si in the steel in the remelting process are uniformly distributed in the height direction of the cast ingot, so that the uniformity of alloy textures is ensured.

The utility model relates to the technical field of kitchen ventilation, and provides a kitchen ventilation and air exchange device with an oil removal function, which comprises a ventilation pipe, a cleaning cover is arranged outside one end of the ventilation pipe, telescopic rods are screwed at four corners in the cleaning cover, a movable frame is arranged in the cleaning cover, and the movable frame is connected with the telescopic rods through bolts. The telescopic end of the telescopic rod is screwed and fixed with the movable frame; according to the kitchen ventilation and air exchange device with the oil removal function, the ventilation pipe is sleeved with the cleaning cover, the movable frame moves to be close to the oil contamination position, the oil contamination is scraped away through the scraping plate, the oil contamination is wiped through the cleaning cotton after being scraped away, meanwhile, the cleaning cotton can rapidly absorb moisture, drying treatment can be conducted through the heating pipe after cleaning, and meanwhile the cleaning cover is arranged on the ventilation pipe in a sleeving mode. In addition, the heating pipe can heat sticky oil dirt before cleaning, the sticky oil dirt can be melted, the scraping plate can better scrape the oil dirt conveniently, the oil dirt can be washed through the spraying frame, the viscosity of the oil dirt can be reduced easily, and the cleaning effect can be improved.

The invention discloses a composite additive for a vanadium electrolyte and a preparation method of the composite additive, and relates to the technical field of vanadium batteries. The composite additive is applied to the electrolyte of the vanadium battery, the electrolyte is a positive electrode electrolyte and a negative electrode electrolyte, the concentration of the vanadium electrolyte can be improved, precipitation and crystallization of vanadium ions can be inhibited, and meanwhile, the electrochemical activity of the vanadium battery can be improved. The composite additive comprises a mixture formed by a first component and a second component, the first component comprises at least one of a fluorine-containing compound, oxyacid and oxysalt, and the second component is a surfactant.

The invention discloses a preparation method of a water reaction type cold patch asphalt mixture. Belongs to the technical field of road engineering materials, and is prepared by the following steps: (1) adding a diluent and a single-component moisture-curing polyurethane prepolymer into matrix asphalt according to a certain proportion to prepare a reaction type asphalt mixed solution with low viscosity and fluidity at normal temperature, and (2) mixing with mineral aggregate to prepare the cold patch asphalt mixture for normal-temperature construction. According to the prepared cold patch asphalt mixture, the single-component moisture-cured polyurethane prepolymer is subjected to curing reaction after being in contact with moisture in water or air to form a cross-linked network structure, so that the strength of the asphalt mixture is greatly improved, and the cold patch asphalt mixture is excellent in water resistance and durability.

The invention discloses hydrophilic hyperbranched organic silicon resin with a side group containing a phosphorus group and a preparation method of the hydrophilic hyperbranched organic silicon resin, and belongs to the technical field of high polymer materials. The method comprises the following steps: synthesizing a phosphorus-containing silane coupling agent monomer from a phosphorus-containing compound monomer and an isocyanate-based silane coupling agent, and then carrying out hydrolytic condensation on the phosphorus-containing silane coupling agent monomer and the silane coupling agent monomer to prepare the hydrophilic hyperbranched organic silicon resin of which the side group contains the phosphorus group. The hyperbranched organic silicon resin prepared by the method is controllable in phosphorus content and active functional group content, is a low-viscosity transparent liquid material, is easy to process and use, and has excellent flame retardance and thermal stability; meanwhile, the preparation process is simple, reaction conditions are mild, and the flame retardant can be well dispersed in water, is environment-friendly and has an important application prospect in flame-retardant modification of water-based materials.

The invention discloses a regeneration method and device for waste activated carbon powder, and relates to the technical field of regeneration of activated carbon powder. A secondary granulation assembly is arranged on the right side of the primary granulation assembly; a drying assembly is arranged on the right side of the secondary granulation assembly; a communicating pipeline is arranged between the top of the drying assembly and the top of the granulation assembly; a screening assembly is arranged on the right side of the drying assembly; a mixing assembly is arranged at the left bottom of the conveying assembly. The bonding effect between the material and the binder is further improved by means of the dredging effect of the material guide rod, and meanwhile, the limiting ring promotes the elastic scraping strip to be always tightly attached to the inner wall of the mixing assembly, so that activated carbon powder is prevented from being attached to the inner wall of the mixing assembly due to high humidity; and resource loss caused by the fact that materials are difficult to adhere to the composite adhesive and remain in the mixing assembly is avoided.

The invention relates to the technical field of electronic products, and discloses a shell with a quick release structure and an electronic product, the shell comprises a shell main body, a frame, an easy-to-pull adhesive and a magnetic attraction assembly, and the frame located on the peripheral side of the shell main body is attracted and spliced with the shell main body through the magnetic attraction assembly; and the display module is adhered to the shell main body by using the easy-to-pull adhesive of which the viscosity is obviously reduced after being stretched, so that quick disassembly of a product can be realized, damage events in the disassembly process can be reduced, the rejection rate of the product is reduced, the recovery rate of electronic materials is improved, and the requirements of international environmental protection regulations are met; and cyclic utilization and sustainable development of resources are also promoted. The improved measure has important significance in promoting the whole electronic industry to transform to a greener and lower-carbon direction.

The invention relates to the technical field of biodiesel processing, and particularly discloses mixing equipment for biodiesel processing and a mixing technology.The mixing equipment comprises a tank body, a driving shaft, a stirring mechanism, a cleaning mechanism and an adjusting mechanism, the stirring mechanism comprises a plurality of stirring assemblies, and each stirring assembly comprises a cross sleeve and two stirring rods; the cross-shaped sleeves in the multiple stirring assemblies sequentially sleeve the outer side of the driving shaft in the axial direction of the driving shaft, the two stirring rods are symmetrically arranged on the cross-shaped sleeves in the radial direction of the tank body, each stirring rod is hollow, filtering holes are densely distributed in the circumferential side of each stirring rod, and the multiple sets of cleaning mechanisms are arranged and correspond to the multiple stirring assemblies respectively. The cleaning device is used for cleaning the peripheral side of the stirring rod; the stirring mechanism is arranged, when the stirring mechanism is in the first state, materials in the tank body can be filtered, and after filtering is completed, the stirring mechanism can be driven by the adjusting mechanism to be switched to the second state, and the materials in the tank body are stirred.

The invention relates to the technical field of nucleic acid extraction and purification, in particular to a DNA and RNA co-extraction reaction reagent and an extraction method, the reaction reagent comprises a nucleic acid protective agent RP, a sample lysis binding solution LB, a protein washing solution WB1, a nucleic acid rinsing solution WB2 and a nucleic acid eluent EB; the nucleic acid protective agent RP comprises DTT, mercaptoethanol, TCEP and sodium hydroxide; the sample cracking binding solution LB comprises Tris-HCl, benzenesulfonic acid, sodium citrate, guanidine hydrochloride, guanidine isothiocyanate, guanidine thiocyanate, urea, triton 100, SDS, potassium chloride, sodium chloride, bromhexine, N-acetylcysteine, ambroxol hydrochloride, isopropanol and absolute ethyl alcohol; the protein washing liquid WB1 comprises Tris-HCl, benzenesulfonic acid, sodium citrate, guanidine hydrochloride, guanidine isothiocyanate, guanidine thiocyanate, urea, triton 100, sodium chloride, isopropanol and absolute ethyl alcohol; the nucleic acid rinsing liquid WB2 is prepared from Tris-HCl, sodium chloride, isopropanol and absolute ethyl alcohol; and the nucleic acid eluent EB is nuclease-free water. The reaction reagent can be used for rapidly and sufficiently enriching and purifying DNA and RNA of a sample at the same time.

The invention relates to the technical field of self-leveling mortar, in particular to tailing gravel paste-based self-leveling mortar and a preparation method thereof. The tailing sand paste-based self-leveling mortar is prepared from the following raw materials in parts by weight: 60 to 70 parts of tailing sand, 30 to 40 parts of fly ash, 30 to 50 parts of cementing material, 18 to 25 parts of water, 1 to 10 parts of polymer modifier, 0.1 to 1 part of anti-crack fiber, 0.5 to 1.5 parts of binder and 0 to 0.18 part of water-retaining agent. The method is simple to operate, and the tailing sand is efficiently utilized, so that the problem of waste of tailing sand resources is solved.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a preparation method of a UV (ultraviolet) viscosity-reducing adhesive tape, which comprises the following steps: taking 100g of polymer, adding 10-80g of ethyl acetate, an isocyanate curing agent and a photoinitiator, then uniformly stirring, standing and defoaming to obtain an adhesive, uniformly coating a PET (polyethylene terephthalate) release film with the standing adhesive, putting into a drying oven to bake and dry, then attaching to a PO (polyolefin) base film, and drying to obtain the UV viscosity-reducing adhesive tape. And putting the adhesive tape process product into an aging room, and placing the adhesive tape process product at normal temperature for 7 days to obtain the UV viscosity-reducing adhesive tape of the PO base material. The UV viscosity-reducing adhesive tape disclosed by the invention can realize the performance that a common UV viscosity-reducing adhesive tape cannot be balanced in a severe environment, has the general characteristics of high adhesive force at an initial stage and extremely low adhesive force after UV treatment in the aspect of performance, can resist strong acid corrosion before UV treatment, can be applied to acid etching protection of glass, can be subjected to viscosity-reducing stripping through UV irradiation after an etching process is completed, and is low in adhesive force and high in adhesive force. And automatic operation is easy, and no adhesive residue risk exists.

The invention relates to the technical field of speed reducers, and discloses a special wave speed reducer for a robot joint. A flexible gear is installed on an inner ring of the roller crossed bearing, a rigid gear is installed on the outer side of the flexible gear, a lubricating mechanism is installed on the inner wall, close to the flexible gear, of the rigid gear, a wave generator is installed in the flexible gear, the lubricating mechanism comprises a fixing ring, a through hole and a lubricating layer, and the fixing ring is installed on the inner wall, close to the flexible gear, of the rigid gear. Through cooperative use of the fixing ring, the through hole and the lubricating layer, lubricating oil in the fixing ring can be conveyed to the lubricating layer through the through hole, when the flexible gear rotates, the lubricating oil adsorbed on the lubricating layer can be directly smeared to the outer surface of the flexible gear, and the lubricating oil can gradually permeate between the flexible gear and the rigid gear; the transmission position of the outer surface of the flexible gear and the inner wall of the rigid gear is lubricated, so that abrasion of the speed reducer caused by lack of lubricating oil can be reduced, the internal temperature of the speed reducer is reduced, and work of the speed reducer is not affected.

The beehive capable of improving the survival rate of the bees in winter comprises a beehive body, a first mounting opening penetrating through the beehive body is formed in one side of the beehive body, and a first mounting mechanism and a second mounting mechanism are arranged in the first mounting opening; the side, away from the second mounting mechanism, of the first mounting mechanism makes contact with the inner wall of the beehive body, the interior of the first mounting mechanism is fixedly connected with a temperature control heating pad, the inner wall of the second mounting mechanism is evenly and fixedly connected with a plurality of feeding boxes, and the inner wall of the second mounting mechanism is fixedly connected with a feeding bottom box; when the beehive capable of improving the survival rate of the bees in winter is used, a temperature control heating pad is started to conduct constant-temperature heating on the interior of the beehive body, the activity of the bees and the disease resistance of the bodies are enhanced, and a plurality of feeding boxes and feeding bottom boxes are mounted in the beehive body through a second mounting mechanism; by arranging the feeding box for the bees and adding foodstuff, the bees can be fed in winter, so that the survival rate of the bees in winter can be improved.