204results about How to "Good suspension" patented technology

The invention relates to the field of fluidization reaction, in particular to a staying-time-controllable multi-stage vibration fluidization gas-solid continuous reaction device which comprises a rack, a reaction bin and a vibration device, the reaction bin is divided into at least two bin chambers and a discharging chamber through partition plates, the adjacent bin chambers are communicated through first communication openings, and the vibration device is arranged in the rack; the discharging chamber is communicated with the adjacent bin chamber through a second communication port; each chamber is provided with an air outlet, the lower end of each chamber is provided with an air inlet, each air outlet is provided with a filtering mechanism, and the air outlet of each chamber is communicated with the air inlet of the adjacent chamber through a connecting pipe except the chamber farthest from the discharging chamber; a breathable supporting plate is arranged at the lower end of the reaction bin. According to the invention, the contact time of the gas-solid reaction materials can be effectively regulated and controlled according to the reaction process conditions, the gas-solid reaction is thorough, the powder applicability is high, and the technical problems that the existing gas-solid slow reaction system is difficult to realize continuous reaction and low in reaction efficiency are solved.

The invention provides a myriameter deep oil-gas wall-fixing type water-based drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The myriameter deep oil gas wall-fixing type water-based drilling fluid is prepared from the following raw materials in parts by weight: 100 parts of water, 1-5 parts of a modified clay shear strength improving agent, 2-4 parts of a hydrophobic association polymer flow pattern regulator, 3-8 parts of a blocking agent, 2-5 parts of a hyperbranched polymer filtrate reducer and 1-3 parts of a cementation blocking type wall-fixing agent. The invention also provides a preparation method of the drilling fluid. The components such as the flow pattern regulator, the plugging agent, the filtrate reducer and the wall-fixing agent are mutually matched and synergistic, so that the drilling fluid can keep good rheological, filtration, plugging and inhibition performances for a long time under the conditions of 240 DEG C and saturated salt, has a strong wall-fixing effect, can effectively maintain the stability of the well wall of an oil-gas well in the depth of 10,000 meters, and has a wide application prospect. And well collapse, well leakage, blowout and other complex well drilling are prevented, and the drilling tool can be used for drilling oil and gas wells with the depth of ten thousand meters.

The present invention discloses a diaphragm sorting device for recycling waste lithium batteries, which relates to the technical field of sorting, and comprises a frame, the frame is fixedly connected with a feed frame, the inside of the feed frame is provided with a baffle channel communicating with each other up and down, the bottom of the feed frame is fixedly connected with a discharge pipe, the inside of the feed frame is fixedly connected with a fixed block on one side close to the discharge pipe, the fixed block is rotatably connected with a first baffle, and the first baffle is rotatably connected with a second baffle. When the mixed material is less, the present invention can increase the air volume by increasing the air inlet, so that the lighter diaphragm can be more easily lifted and separated by the wind, avoiding incomplete separation due to insufficient wind; when the mixed material is more, reducing the air inlet can increase the wind speed, so that the diaphragm can achieve good suspension and separation effects by using a higher wind speed without increasing energy consumption, which not only ensures the separation quality, but also avoids energy waste.

The invention relates to the field of rubber, and provides a wet rubber compound containing natural rubber and a preparation method thereof, the wet rubber compound containing natural rubber comprises the following raw materials by weight: 90-110 parts of natural rubber, 30-50 parts of a filler, 2-4 parts of modified sepiolite, 3-7 parts of an anti-aging agent, and 150-200 parts of deionized water. The wet-process rubber compound containing natural rubber provided by the invention has good dispersibility, mechanical properties and wear resistance, and has good commercial application value.

The invention discloses an airflow stirring device with a high-temperature sealing effect and a using method thereof. The airflow stirring device comprises a stirring container, a gas distributor arranged at the bottom of the stirring container, a driving stirring mechanism arranged on the stirring container and the gas distributor, and a multi-stage sealing assembly arranged on the gas distributor and the driving stirring assembly. The stirrer is matched with the gas distributor for use, the dispersion capacity is high, the circulation capacity is good, the problems of high-temperature caking and poor suspension effect of mixed materials are solved, the multi-stage sealing assembly is adopted, the sealing performance is enhanced, and the danger of explosion caused by sealing failure and gas leakage at the high temperature is prevented; the sealing reliability of the stirring device under severe working conditions such as high temperature is greatly improved, the possibility of explosion caused by gas leakage is reduced, the multi-stage cooling assembly is adopted, the temperature of a sealing part is reduced, downward heat transfer is reduced, and it is guaranteed that the device operates stably at the high temperature.

The invention relates to a strong plugging type oil-based drilling fluid system suitable for a fractured formation and a preparation method thereof, the oil-based drilling fluid system comprises the following components by mass: 70-80 parts of base oil, 3-5 parts of an integrated emulsifier, 1-3 parts of an alkalinity regulator, 2-4 parts of a liquid filtrate reducer, and 1.5-3 parts of an oil-based efficient tackifying and shear strength improving agent, 1.5-3.0 parts of a multi-stage crack plugging agent and 0-80 parts of a weighting material. The strong-plugging oil-based drilling fluid is wide in application range, the density can be adjusted between 0.9 g / cm < 3 > and 2.2 g / cm < 3 >, and the strong-plugging oil-based drilling fluid has relatively good rheological property, suspension stability and filter loss control capability in a range of 60-170 DEG C and can be applied to shale gas drilling construction of a fractured formation.

The invention relates to an Iguratimod preparation and a preparation method thereof, and belongs to the technical field of medicament preparation, and the preparation method specifically comprises the following steps: S1, treating a cyclodextrin derivative by using a compound enzyme to obtain enzyme-treated cyclodextrin; then carrying out oxidation crosslinking on the cyclodextrin subjected to enzyme treatment to prepare modified cyclodextrin; s2, mixing an iguratimod raw material medicine with a suspending aid, carrying out micronization treatment, then adding into a dispersion medium, and uniformly stirring to obtain an iguratimod suspension; s3, the modified cyclodextrin obtained in the step S1 and the iguratimod suspension obtained in the step S2 are homogenized and mixed, then freeze drying is conducted, and the iguratimod preparation is obtained. Through unique preparation design and optimization process, the dissolving property of the iguratimod is remarkably improved, the dissolution rate and bioavailability of the medicine are improved, the stability of the preparation and the medication convenience of a patient are ensured, and a more reliable and efficient solution is provided for clinical application of the iguratimod.

The invention provides a bionic temporary plugging device and a preparation method and a temporary plugging process thereof. The temporary plug comprises a wrapping layer, a filling material, a rigid temporary plugging ball, a fixing rod and a clamping ring, the wrapping layer comprises a head part and a beard part, the head part is of a hollow structure, the beard part is composed of a plurality of strip-shaped bodies, and the head part and the beard part are separated through a clamping ring; the rigid temporary plugging ball is located in the head of the wrapping layer, and the filling material comprises high-water-absorption polyacrylamide and irregular rigid particles which are alternately distributed in the head of the wrapping layer; one end of the fixing rod is connected with the rigid temporary plugging ball, and the other end penetrates through the clamping ring and is fixed by the clamping ring. The invention further provides a preparation method and a temporary plugging process of the bionic slug. The jellyfish bionic temporary plug adopts a jellyfish bionic structure, self-adaptive plugging is carried out on the eroded shot hole by utilizing the characteristics of easy deformation and large hydrodynamic radius of the jellyfish bionic structure, and the jellyfish bionic temporary plug has the characteristics of high pressure bearing and strong setting, and can adapt to perforation holes of different specifications.

The invention relates to the technical field of pharmaceutical preparations, in particular to a fluconazole dry suspension and a preparation method thereof. The fluconazole dry suspension composition comprises the following components in parts by weight: 160 parts of fluconazole, 2100-2300 parts of a filler, 27-35 parts of a suspending aid, 2-6 parts of a lubricant and a proper amount of a pH regulator, the suspending aid is a composition of hydroxypropyl methylcellulose and glucan, and the mass ratio of the hydroxypropyl methylcellulose to the glucan is (2: 1)-(4: 1); the amount of the pH regulator enables the pH of the suspension containing 40mg of fluconazole per 1mL prepared by adding water into the dry suspension to be 3.0-4.5. The fluconazole dry suspension disclosed by the invention is slow in sedimentation in water, good in suspension property, free from caking after sedimentation and capable of being quickly redispersed after being shaken, and the prepared fluconazole dry suspension is good in flowability and good in uniformity.

The invention relates to the technical field of dry powder polymers, in particular to a dry powder polymer online mixing and fracturing method for an oil and gas field. S1.1, weighing the following raw materials in parts by weight: 1 to 10 parts of a thickening agent, 18 to 23 parts of hydroxypropyl guar gum, 11 to 15 parts of polyacrylamide, 2 to 6 parts of borax, 1 to 3 parts of zirconate, 3 to 6 parts of a sodium hydroxide pH value regulator, 0.1 to 0.5 part of a diethylene triamine pentaacetic acid scale inhibitor and 0.5 to 0.7 part of lauryl sodium sulfate; wherein the thickening agent is prepared by mixing polyethyleneimine and 6-[(4-azido-2-nitrophenyl) amino] hexanoic acid sulfonic acid group succinimide ester according to a mass ratio of 1: (0.05 to 0.1); s1.2, adding the raw materials into the dry material system and uniformly mixing; s1.3, water is added into a high-speed stirrer for mixing, and the fracturing fluid is prepared; the thickening agent is adopted, the viscosity of the polymer is improved through a dual cross-linking mechanism, the stability of the fracturing fluid is enhanced, the sand-carrying capacity and the suspension capacity of the fracturing fluid are improved, and the applicability of the fracturing fluid is widened.

The invention relates to the technical field of magnetic suspension, and aims to solve the problems that the layout mode that a suspension electromagnet and a linear induction motor of a traditional magnetic-levitation train are independent of each other occupies a large space, and normal force of the linear induction motor has a negative effect on suspension force. The invention provides a magnetic-levitation train traction suspension combined type induction rail and a traction suspension system electromagnetic structure. The traction suspension combined type induction rail comprises an electromagnet induction rail body, the electromagnet induction rail body is arranged below a track beam in the line direction, protrusions are downwards formed on the two sides of the electromagnet induction rail body, the end faces of the protrusions are the pole faces of the electromagnet induction rail body, and an installation cavity is formed between the protrusions on the two sides. A mounting rail is arranged in the mounting cavity, and the mounting rail is connected with the electromagnet induction rail; a plane is formed at the bottom of the mounting rail and is a secondary mounting surface of the linear induction motor; according to the invention, the occupied space can be reduced, and the suspension performance of the vehicle can be improved.

The invention provides magnetic porous silica gel as well as a preparation method and application thereof. The magnetic porous silica gel comprises a magnetic silica gel inner core and a silicon dioxide coating layer arranged on the surface of the magnetic silica gel inner core, the magnetic silica gel inner core comprises a porous silica gel carrier and # imgabs0 # magnetic nanoparticles loaded on internal pore channels of the porous silica gel carrier. Ferroferric oxide is prepared in pores inside the porous silica gel microspheres through a simple method, and Fe3O4 nanoparticles are converted into # imgabs1 # magnetic nanoparticles with higher magnetic responsiveness and chemical stability through high-temperature calcination, so that the problem of magnetism weakening is solved.

This invention discloses a method for preparing high specific surface area cerium phosphate nanoparticles. The modified corn starch in this invention exhibits good water solubility, resulting in a solution with good suspension and stability after dissolving in water. This suspension stability provides a spatial carrier for the formation of cerium phosphate nanoparticles. A network structure is formed through hydrogen bonding between the molecular weight chains of the modified corn starch, allowing control over the uniformity of cerium phosphate particle size. Different specific surface area values ​​of cerium phosphate can be controlled by adjusting the concentration of the modified corn starch. The modified corn starch can be removed through subsequent high-temperature sintering and washing, ultimately yielding high-purity cerium phosphate nanoparticles. These nanoparticles possess uniformity and high specific surface area, making them suitable for applications in electrode materials, adsorbent materials, luminescent materials, and polymer nanofillers.

The present invention discloses a core material for concrete and its application in ultra-high performance concrete, belonging to the technical field of concrete. The core material for concrete provided by the present invention comprises, by weight, 20 to 50 parts of fly ash, 20 to 40 parts of mineral powder, 20 to 30 parts of bauxite powder, 10 to 20 parts of nano calcium carbonate, 5 to 10 parts of alumina, 5 to 10 parts of zeolite powder, 5 to 10 parts of kaolin, and 8 to 30 parts of water reducing agent powder. The present invention provides a core material for concrete, which is obtained by mixing a self-made water reducing agent with active powders such as fly ash, mineral powder, bauxite powder, nano calcium carbonate, alumina, zeolite powder, and kaolin, and can be directly applied to ultra-high performance concrete during construction, so that the concrete can achieve the effects of high strength, low shrinkage, and resistance to chloride ion penetration under standard curing conditions.

The invention discloses a desulfurized gypsum grinding preparation system and application, and relates to the technical field of grinding systems, the desulfurized gypsum grinding preparation system comprises a dilution tank, a pre-grinding tank, a grinding machine and a post-grinding tank which are connected in sequence; the inlet end of the before-grinding groove is connected with a first circular vibrating screen, and the outlet end of the grinding machine is connected with a second circular vibrating screen and a third circular vibrating screen which are connected in series. The method solves the problems that a large amount of desulfurized gypsum produced by a thermal power plant is unmarketable under the condition of low real estate industry in the traditional technology, so that the application occasion of the desulfurized gypsum needs to be found again, and the desulfurized gypsum can be used in the papermaking industry and paper-based filler under the continuous research of technicians; but the desulfurized gypsum produced by a thermal power plant is large in particle size and many in impurities, and cannot be directly applied to the paper-based filler.

The present application relates to the technical field of biomedicine, and specifically discloses a sodium alginate embolic particle and its preparation method and application. The preparation method of the sodium alginate embolic particle disclosed in the present application comprises the following steps: dissolution, primary freeze drying, infiltration, cross-linking, secondary freeze drying, crushing and screening, and sterilization; dissolution is: preparing a 1.7-2.3wt% sodium alginate aqueous solution, adding a freeze-drying protective agent, stirring at 55-65°C, and cooling to 0-5°C; infiltration is: infiltrating the sodium alginate sponge obtained by primary freeze drying in a sodium alginate aqueous solution with a mass concentration of 0.1-0.8wt% to reach saturation, and obtaining a sodium alginate infiltrate; cross-linking is: immersing the sodium alginate infiltrate in a cross-linking liquid for cross-linking reaction. Using the technical solution provided by the present application, sodium alginate embolic particles with high porosity, uniform particle size, small average pore size, suitable water absorption, excellent suspension performance, and excellent catheter passing performance can be obtained.

The present invention provides a magnetic levitation hybrid engine, comprising a shell, a three-phase asynchronous motor, a propeller, a plurality of groups of electromagnets and an electromagnet mounting seat; the three-phase asynchronous motor is arranged on the top of the shell, the propeller is rotatably connected to the output shaft of the three-phase asynchronous motor, a plurality of electromagnet holes are evenly opened on the electromagnet mounting seat, an air duct is opened at the center of the electromagnet mounting seat, and a plurality of groups of electromagnets are correspondingly arranged in the plurality of electromagnet holes; the airflow generated by the propeller of the present invention moves downward through the air duct at the center of the electromagnet mounting seat, providing auxiliary lifting force for a device carrying the engine, breaking through the limitation that the traditional magnetic levitation engine is suspended only by electromagnetic force, and providing a new idea for applying the magnetic levitation engine to an object with greater gravity; the rotating high-frequency alternating magnetic field generated by the twelve groups of electromagnets installed in the electromagnet mounting seat under the action of currents of different phases will generate an induced magnetic field repulsion force on the magnetic levitation road surface, thereby achieving a magnetic levitation effect.

The invention provides a leaking stoppage material with slow release and dispersion effects as well as a preparation method and application thereof, the leaking stoppage material comprises an inner core and a shell in a mass ratio of (4-5): 1, the inner core comprises silicon dioxide porous microspheres, polyacrylamide is adhered to the interiors of pores of the silicon dioxide porous microspheres, and the mass ratio of the silicon dioxide porous microspheres to the polyacrylamide is 1: (16-18); the shell is formed by mixing clay and inorganic particles. The plugging material disclosed by the invention has slow release and dispersion effects, the viscosity of the plugging slurry is not increased when the plugging material just enters a well, and the viscosity of the plugging slurry is slowly increased only in a sinking process, so that a plugging effect is achieved.

The invention relates to the technical field of organobentonite, in particular to a preparation method of nanoscale organobentonite, which is characterized in that fine crushing and purification treatment is performed on bentonite raw ore powder, and specific acidizing treatment steps are combined, so that not only can impurities be effectively removed, but also high-purity nanoscale preparation of bentonite can be realized; the activity and the reaction performance of the bentonite are improved, and a foundation is laid for subsequent sodium treatment and lithiation treatment; secondly, sodium bentonite and lithium bentonite are prepared through sodium treatment and lithiation treatment respectively, then the composite bentonite is prepared through mixing, the lithiation bentonite has excellent expansibility, thickening property and suspension property in water, low alcohol and low ketone, the sodium bentonite has good dispersity and cohesiveness, and the composite bentonite is prepared through mixing the sodium bentonite and the lithium bentonite. After the two are mixed and organically modified, the advantages of the two can be integrated, and the physical properties of the bentonite are further improved, for example, the expansion multiple is increased, the viscosity is increased, and the suspension stability is enhanced.

The utility model relates to a kind of suspension bed frame and the suspension soft bed of application thereof, solve the problem that the supporting leg of bed frame or bed product is exposed and affects visual effect existing in prior art, the technical scheme used is: including bed board, the supporting leg of supporting bed board, and the bed backrest being set in the one end of the bed board, it is characterized in that the three edges of the bed board are provided with the bed frame enclosed by left side plate, right side plate and tail plate, the bed backrest closes the opening of the bed frame, the lower end of the bed frame is higher than the lower end of the supporting leg, and the bed frame hides the supporting leg.Its effect: by bed backrest and bed frame cooperation, so that bed frame or bed product is used, supporting leg is hidden in the interior of bed frame, not bare, form "suspension" effect, to improve the overall quality of bed frame, bed product and bed product use space.

The utility model discloses an insect sticking agent heating and atomizing device which comprises an atomizing cylinder, an atomizing nozzle fixed on the circumferential side wall of the atomizing cylinder and an air pump, the atomizing nozzle is opposite to the air pump in position, air generated by the air pump can be exhausted through the atomizing nozzle, an electric heating wire is fixedly installed on the inner bottom wall of the atomizing cylinder and can heat insect sticking agents, and therefore the insect sticking agents can be heated. And steam liquid drops are formed and discharged through the atomizing nozzle, an opening is formed in the top of the atomizing cylinder, and a sealing cover is detachably installed at the opening. The electric heating wire is electrified through the built-in power supply, the electric heating wire is used for heating the insect sticking agent, so that the insect sticking agent can be converted into steam or finer particles by heating the insect sticking agent, and the atomized insect sticking agent is discharged through the atomizing nozzle and enters the environment by starting the air pump, so that the suspension property and the diffusivity of the insect sticking agent in the air are improved, and the insect sticking agent is prevented from being damaged. Therefore, the area where the pests are located can be better covered, the possibility that the pests make contact with the insecticide is improved, and the spraying effect is ideal.

The electrochemical reaction device comprises a plurality of electrochemical reaction units which are sequentially connected in series; the electrochemical reaction unit comprises a vertical cylindrical first reaction part and a U-shaped cylindrical second reaction part; the upper end and the lower end of each electrochemical reaction unit are provided with connecting pieces connected with the screen plate, and the connecting pieces are used for fixing the outer electrode and the inner electrode and are hermetically connected with the first reaction part and the second reaction part; an automatic exhaust valve is arranged above the second reaction part connected in each electrochemical reaction unit; gas in the electrolysis system is discharged out of the reaction system; attachments on the surface of the electrode are easy to clean and convenient to disassemble; installation is simple and fast; catalytic layers for electro-catalytic reaction are prepared on the inner wall of the outer electrode and the outer wall of the inner electrode of each electrochemical reaction unit; and catalyst layer materials on the surfaces of the positive and negative electrodes can be timely repaired.

The application discloses a kind of building waste self-reinforced recycled aggregate preparation methods, comprising the following steps: (1), the building waste containing red brick and hardened cement paste is crushed, and red brick material and the block of hardened cement paste containing are separated out;(2), red brick material is mixed with the solution containing carboxyl ether and is ground, and the modified slurry containing nanoscale red brick particle material is obtained;(3), the block of hardened cement paste containing separated out is immersed in modified slurry, after immersion is completed, the block of hardened cement paste containing is taken out and is dried, and building waste self-reinforced recycled aggregate is obtained;In the solution containing carboxyl ether, solvent is water, and the concentration of carboxyl ether is 0.1-0.8mol / L;The particle size range of nanoscale red brick particle material is 50-200nm;During the process of immersion, the mixture is heated and stirred, and the heating temperature is 40-80 DEG C.The method can prepare building waste self-reinforced recycled aggregate with high strength and low water absorption.

The invention relates to the technical field of potassium phosphate preparation, and discloses an industrial preparation method of instant monopotassium phosphate, which comprises the following steps: transforming idle washing powder production equipment into an equipment system for preparing the instant monopotassium phosphate; preparing a potassium hydroxide solution with the concentration of 20-90% in an alkali dissolving tank; the method comprises the following steps: mixing a phosphoric acid solution with a potassium hydroxide solution for reaction to obtain a neutralization solution, and atomizing the neutralization solution into liquid drops through a pressure atomization system at the upper part of a drying tower. By breaking through waste heat recovery and utilization in industrial production, reform of a production process technology and establishment of an LTE (Long Term Evolution) technology, one-step puffing drying of a neutralization solution obtained by reaction of wet-process phosphoric acid and potassium hydroxide in a powder spraying tower is realized, and hollow, loose and porous KDP201 particles are formed.

The invention provides an agglomeration grinding fluid processing method for a sapphire LED chip back reduction process. The method comprises the following steps: S1, preparing a formula; s2, mixing; s3, precipitating and clarifying; s4, filtering and purifying; s5, performance testing; and S6, applying to grinding. The agglomerated grinding fluid has the following advantages in the sapphire LED chip back reduction process: the suspension property and the viscosity are improved: by adding the thickening agent (such as carbomer, CMC and the like), the suspension property of the liquid is enhanced, the precipitation of the grinding material in the grinding process is reduced, and the uniform distribution of the grinding material is ensured; according to the process, the resin honeycomb pad is matched with the agglomerated suspension liquid, a traditional copper disc process is replaced, the copper disc correction period is shortened, the time cost is reduced, and the production efficiency is improved; due to the use of the thickening agent, the grinding material is not easy to throw out in the grinding process, so that the utilization rate of the agglomerated powder is improved, and a more effective processing effect is ensured.

The invention discloses a preparation method of fracturing sand for fracturing fluid with good suspension capacity. The preparation method comprises the following steps: (1) pretreating quartz sand; (2) adding the pretreated quartz sand into a hydrophobic modifier, fully stirring, filtering and drying; wherein the hydrophobic modifier is prepared from the following components in parts by mass: 0.1 to 0.2 part of a surfactant, 1 to 2 parts of a hydrophobic polymer, 3 to 4 parts of ethidene diamine, 1 to 3 parts of silica sol, 0.5 to 0.6 part of siloxane and 100 parts of water; and (3) adding the hydrophobic modified quartz sand into a hydrophilic modifier, fully stirring, adding hydrogen peroxide, fully reacting, filtering, and drying to obtain a final product. Wherein the hydrophilic modifier is prepared from the following components in parts by mass: 1 to 3 parts of hydrophilic polymer, 1 to 3 parts of silica sol, 2 to 4 parts of 3-mercaptopropyltrimethoxysilane and 100 parts of water.

The invention discloses a traction and suspension combined control method for an embedded maglev train. The method comprises the steps that a traction sensor detects the speed v of a motor, the primary phase current i of the motor and the primary electric frequency omega s of the motor in real time; a suspension gap sensor detects a suspension air gap g in real time, namely a motor air gap; the suspension air gap g is input into the traction inverter; the traction inverter establishes a real-time linear motor model according to the received motor air gap value; the motor speed v, the motor primary phase current i and the motor primary electric frequency omega s are input into the suspension controller, and the suspension controller calculates the normal force Fy of the linear motor according to the received motor speed v, the motor primary phase current i, the motor primary current frequency omega s and the motor air gap g. According to the method, data of the suspension system and the traction system are fused, interference between the suspension system and the traction system is restrained, the suspension stability is improved, the traction performance is improved, and optimization of the suspension performance and the traction performance is achieved.

The invention discloses a preparation method of a modified PBO fiber toughening agent for well cementation under a high-frequency alternating injection-production condition, and belongs to the technical field of well cementation materials. The method comprises the following steps: obtaining PBO fibers; the method comprises the following steps: soaking PBO fibers in an acetone solution, cleaning and drying; weighing heavy calcium carbonate, ethanol, a silane coupling agent and deionized water, mixing and stirring to obtain a modified solution; pBO fibers are added into the modification solution, the mixture is placed in a magnetic stirrer to be stirred at a high speed for 30-90 min, and primary modified PBO fibers are obtained; and putting the primarily modified PBO fiber into a beaker containing deionized water, putting the beaker into an ultrasonic cleaner, and treating for 20-40 minutes to obtain the modified PBO fiber toughening agent. According to the present invention, the raw materials are cheap and easily available, the preparation process is controllable, the product performance is stable, the compatibility is good, and when the cement paste is used for the well cementation operation, the formation environment and the working condition faced by the air energy storage well can be met, and the success rate of the well cementation construction can be improved.

The invention discloses a photo-initiation self-suspension proppant and a preparation method and application thereof.The method comprises the steps that firstly, acrylamide, ethylene monomers, sulfonic acid monomers, a cross-linking agent and a photoinitiator are added into water and stirred to be dissolved, the pH value of a system is adjusted to be 3-7, and modified liquid is prepared; the modification method provided by the invention is simple and reasonable in design, and the prepared quartz sand proppant has excellent suspension performance, can effectively reduce the oil and gas exploitation cost and improve the oil and gas yield, and meets the requirements of unconventional oil and gas reservoir exploitation.

The present invention relates to the technical field of microbial fermentation, and in particular to a fermentation medium of green Trichoderma, a Trichoderma agent and a preparation method thereof. The present invention adopts liquid-solid combined fermentation, solid-state fermentation with millet as the main raw material, supplemented with a quick-acting carbon and nitrogen source and an inorganic salt, ferments for 48 hours, sieves green Trichoderma conidia powder, mixes the conidia powder with a wetting agent, a dispersant and a carrier, etc. to prepare green Trichoderma wettable powder, the preparation has good water solubility, can be used for spraying and drip irrigation of crops, can prevent and treat plant diseases, and has the advantages of safety and high efficiency, no drug residue, no toxic side effects, reducing the use of antibiotics, and improving crop immunity.