81results about How to "Improve suspension stability" patented technology

The invention belongs to the technical field of grinding and polishing, and particularly relates to an aluminum nitride ceramic polishing process. The polishing process comprises the following steps that the aluminum nitride ceramic substrate is placed on a polishing pad, and polishing liquid is added for polishing; the polishing solution is prepared from the following components in parts by weight: 15-20 parts of a composite abrasive, 2-4 parts of an oxidant, 8-10 parts of a functional compound and 60-70 parts of water are mixed into a solution, and the pH value of the solution is adjusted to be 4-4.5 by using organic acid; the polishing solution provided by the invention has good suspension stability and antibacterial performance, the polishing solution is used for polishing the aluminum nitride ceramic substrate, the polishing rate is high, the polishing effect is good, and the aluminum nitride ceramic substrate which is small in surface roughness and free of scratches can be obtained.

The invention relates to a modified binder as well as a preparation method and application thereof. The modified binder comprises an inner core layer, a middle shell layer and an outer shell layer which are sequentially arranged from inside to outside, wherein the inner core layer and the middle shell layer are made of butadiene styrene rubber, and the strength of the inner core layer is greater than that of the middle shell layer; and the shell layer is formed by unsaturated acid and unsaturated ether substances. According to the scheme provided by the invention, the problems of negative electrode coating cracking and material floating in the coating process can be effectively improved, the stripping force of the negative electrode piece is improved, and the adhesive property is good; and the dispersion of the negative active material, the conductive agent and the like can be improved and promoted, the loading capacity of the negative active material is improved, and the energy density and cycle performance of the battery are improved.

The invention discloses a coal underground efficient gasification method based on calcium-based catalyst injection and a carbon dioxide geological storage method. The calcium-based powder material adopts high-purity limestone, wherein the content of calcium oxide is greater than 50%. The method comprises the following steps: crushing a limestone raw material into micron-scale to nano-scale powder, putting the powder into a stirring device, mixing the powder with a coal underground gasification injection agent to obtain a suspension fluid, and injecting the suspension fluid into a coal underground gasification furnace which is in production; calcite minerals in limestone are decomposed into calcium oxide under the coal underground gasification high-temperature effect, and the calcium oxide adsorbs water and carbon dioxide to the surface of coal coke to generate a synergistic gasification reaction at the same time. Wherein the injectant and the calcium-based powder suspension fluid are prepared by adopting a foam suspension device provided with an ultrasonic generator, so that the suspension stability of the calcium-based powder in the suspension fluid is improved. According to the invention, the calcium-based material is injected into the coal underground gasification furnace as the catalyst, so that the moisture, carbon dioxide and carbon in the coal are subjected to co-gasification reaction, the coal underground gasification reaction rate and gasification efficiency can be obviously improved, the environmental pollution is reduced, and the maximum utilization of resources is realized.

The invention provides a utilization method of an affiliated product resin in a decommissioned carbon fiber reinforced resin-based composite material and a prepared anticorrosive coating, the method comprises the following steps: mixing the decommissioned carbon fiber reinforced resin-based composite material with a fused salt containing CeO2 in a fused salt tank, heating and preserving heat, separating out carbon fibers, and collecting a liquid-phase product; rectifying the liquid-phase product, and separating a water phase and a phenol-rich phase; adding epichlorohydrin into the phenol-rich phase, and hardening and tempering; and finally, adding epoxy resin and a solvent into the quenched and tempered phenol-rich phase to obtain the metal anti-corrosion paint. And coating the metal surface with the obtained metal anti-corrosion paint, and curing to obtain an anti-corrosion layer. Compared with the prior art, the Ce-based catalyst provided by the invention can effectively improve the reaction rate, reduce the yield of coke and improve the yield of a liquid phase product, and has good anti-coking property. The phenol-rich oil is prepared by cracking and then is used as a metal anticorrosive coating.

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 provides a high-temperature stabilizer for high-density oil-based drilling fluid. The high-temperature stabilizer is prepared from mixed components, the mixed component comprises dodecylbenzene sulfonic acid, an alkaline compound, water, a water-in-oil emulsifier and an oil phase component; the alkaline compound is polybasic alkali and / or an oxide corresponding to the polybasic alkali. Compared with the prior art, the dodecylbenzene sulfonate contained in the high-temperature stabilizer for the high-density oil-based drilling fluid belongs to multi-element metal soap salt, more than two hydrocarbon chains are contained in a molecule, and the high-temperature stabilizer is more oleophylic, is suitable for being used in a W / O type oil-based drilling fluid system, and has the functions of high temperature resistance, wetting and tackifying; other auxiliary emulsion, wetting agent and tackifier do not need to be added in a preparation system, preparation is simple, field operation is convenient, and cost reduction and efficiency improvement are facilitated.

The invention discloses a layered tackifier, belongs to the technical field of oilfield chemistry, and particularly relates to a layered tackifier as well as a preparation method and application thereof, the layered tackifier comprises a layered material and a tackifying material, the layered material is two-dimensional transition metal carbonitride, and the tackifying material is a silicon nitride material. The tackifying material is prepared from the following raw materials: 2-acrylamido-2-methylpropanesulfonic acid, a quaternary ammonium salt monomer and a thermal tackifying monomer. Wherein the tackifying material is a polymer prepared from 2-acrylamido-2-methylpropanesulfonic acid, a quaternary ammonium salt monomer and a thermal tackifying monomer; the layered tackifier is used for improving the suspension stability of high-density cement paste and can meet the high-temperature construction environment of 150-210 DEG C, and the density difference of the cured cement paste after standing for two hours is smaller than 0.03 g / cm < 3 >.

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 present application relates to the field of pesticides, and specifically discloses a pesticide composition containing fluazifop-butyl and glufosinate-ammonium, and a preparation method and application thereof. The pesticide composition comprises the following raw materials: fluazifop-butyl, glufosinate-ammonium, a dispersant, an emulsifier, an anti-settling agent and vegetable oil; wherein the emulsifier is a mixture of sodium salt of sulfonated styrene-maleic anhydride copolymer and hydroxylated lecithin; and the preparation method comprises the following steps: mixing and stirring the vegetable oil, the emulsifier and the anti-settling agent to obtain an oil phase, then adding fluazifop-butyl and glufosinate-ammonium, mixing and stirring, adding the dispersant, and then performing homogenization and grinding to obtain a dispersible oil suspension type pesticide composition; the present application also discloses the use of the above pesticide composition for weeding. The present application has the characteristics of a pesticide reagent containing fluazifop-butyl and glufosinate-ammonium at the same time, which can be directly diluted with water when used without the need for fresh preparation, while ensuring its efficacy and being simpler and more convenient to operate.

The invention discloses a magnetic suspension control method based on a BP neural network, and the method achieves the self-tuning of control parameters through the real-time learning of the neural network and the adaptation of the dynamic characteristics of a magnetic suspension motor, and specifically, a system can achieve the self-tuning of the control parameters according to the actual operation data of the magnetic suspension motor in different operation states and stages. According to the optimization method, parameters of neurons of the input layer and the hidden layer are dynamically adjusted, control parameters of the output layer are corrected in real time, the suspension stability of the magnetic suspension motor rotor is remarkably improved through the optimization method, compared with a traditional method, the time that controller parameters depend on manual debugging is effectively shortened, the labor cost and the operation complexity are greatly reduced, and the operation efficiency is improved. Meanwhile, control parameters are optimized in real time through the BP neural network, more excellent controller parameters can be output, the debugging effect is more stable, and the response speed and the control precision of the magnetic suspension system are remarkably improved.

The invention relates to the field of pesticides, and particularly discloses a pesticide composition containing flumioxazin and glufosinate-ammonium as well as a preparation method and application of the pesticide composition, and the pesticide composition is prepared from the following raw materials: flumioxazin, glufosinate-ammonium, a dispersing agent, an emulsifying agent, an anti-settling agent and vegetable oil; wherein the emulsifier is a mixture of sulfonated styrene-maleic anhydride copolymer sodium salt and hydroxylated lecithin; the preparation method comprises the following steps: mixing and stirring the vegetable oil, the emulsifier and the anti-settling agent to prepare an oil phase, then adding the flumioxazin and the glufosinate-ammonium, mixing and stirring, then adding the dispersing agent, and then carrying out homogeneous grinding treatment to prepare the dispersible oil suspension type pesticide composition. The invention further discloses the pesticide composition for weeding, and the pesticide composition has the advantages that the pesticide reagent containing flumioxazin and glufosinate-ammonium at the same time is used after being directly mixed with water during use and does not need to be prepared on site, meanwhile, the pesticide effect of the pesticide composition is guaranteed, and operation is simpler and more convenient.

The invention provides a preparation method of an illite smectite mixed-layer clay-based chlorantraniliprole nano suspending agent, and aims to solve the problems of poor water dispersibility, large particle size and the like of the existing chlorantraniliprole water suspending agent. The preparation method comprises the following steps: stripping illite smectite mixed-layer clay by adopting a high-pressure homogenization technology to obtain high-dispersion slurry; and then adding a high-efficiency modifier and a dispersant, and preparing the chlorantraniliprole nano suspending agent with high suspension property and thermal stability by adopting a water-based nano ball milling process. According to the chlorantraniliprole suspending agent and the preparation method thereof, the high-dispersion illite smectite mixed-layer clay subjected to lamella stripping is used as a carrier of the chlorantraniliprole suspending agent, a formed three-dimensional network structure can improve the suspension stability of chlorantraniliprole, and meanwhile, nanosheets can assist a dispersing agent in further preventing agglomeration of chlorantraniliprole molecules, so that the suspending agent reaches nanoscale dispersion. The preparation technology is simple and efficient, raw materials are easy to obtain and environmentally friendly, and the method is suitable for large-scale industrial production.

The invention discloses a cement well cementation prepad fluid which comprises the following components in parts by mass: 70 to 100 parts of barite, 0.5 to 1.2 parts of a suspension stabilizer, 1 to 5 parts of a retarder, 4 to 6 parts of poly (1, 4)-2-amino-2-deoxy-beta-D-glucose, 8 to 12 parts of alkyl sodium sulfonate, 2 to 8 parts of quaternary ammonium salt carboxylic acid, 80 to 90 parts of water and 0.3 to 0.5 part of tributyl phosphate. The invention also discloses a preparation method and application thereof. The cement well cementation prepad fluid provided by the invention can realize wetting overturning, can resist high temperature of 200 DEG C or above, and is good in suspension stability and strong in anti-pollution capacity.

This invention discloses a high-temperature resistant, high-density water-based drilling fluid for ultra-deep wells and its preparation method, belonging to the field of oil and gas drilling technology. The drilling fluid is composed of the following components in parts by weight: 100 parts water, 2-5 parts high-temperature resistant modified clay, 150-280 parts composite weighting agent, 8-15 parts high-temperature resistant polymer filtration loss reducer, 3-8 parts core-shell type high-temperature resistant flow modifier, 4-10 parts nano-composite plugging agent, and 2-5 parts high-temperature stabilizer. This invention effectively solves the technical problems of rheological runaway, increased filtration loss, and barite sedimentation in ultra-deep well high-density water-based drilling fluids under high-temperature conditions above 220℃ by utilizing the high-temperature expansion-disintegration mechanism of the core-shell type flow modifier, nano- to micron-level multi-stage plugging, and the close packing of spherical and irregular weighting materials. It exhibits temperature resistance up to 220℃ and a density of 2.80 g / cm³. 3 It has the advantages of low filtration loss under high temperature and high pressure and good sedimentation stability.

The present invention provides a low-cost, fast self-drying water-based casting coating with fast self-drying speed, low production cost, low irritating odor, good brushability and leveling property and a preparation method thereof. The coating comprises a refractory base material, a binder, a dispersing suspending agent, an additive and water, wherein the binder adopts water-based polyvinyl butyral resin and fast-drying silica sol; the self-drying time of a coating with a thickness of 0.5 mm under conditions of low ambient humidity and good ventilation conditions does not exceed 60 minutes; even under conditions of an ambient temperature of 25°C and a relative humidity of up to 80%, the coating can basically achieve natural drying within 100 minutes, meeting the casting production requirements under high humidity climate conditions in the south. The present invention belongs to the technical field of casting coatings, and can replace alcohol-based coatings and ordinary drying-type water-based coatings for various casting production, effectively eliminating defects such as sand sticking, sand inclusions, and pores in castings, reducing production costs, and improving the production environment.

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 invention discloses a suspension stable material, the simple formula of the structure of the suspension stable material is R1-C-R2-N-R3-R4, in the structural formula, R1 is SO3Na, NH3Cl, CH2CH3 or COONa; r2 is C = O, CH2CH3, C = C or NH3Cl; r3 is COONa, C = O, NH3Cl or C = C; r < 4 > is NH3Cl, SO3Na or COONa; and only one of the R1, the R2, the R3 and the R4 is NH3Cl, SO3Na or COONa. The invention also discloses a preparation method and application thereof. The suspension stable material prepared by the invention is not thickened under a low-temperature condition, the consistency is not higher than 30Bc when a thickening instrument tests that the temperature is lower than 100 DEG C, the suspension stable material is not diluted under a high-temperature condition, and the consistency is not lower than 20Bc of the initial consistency when the temperature is higher than 200 DEG C.

The invention relates to a system and a method for measuring punching positions of stone chimes. The technical problem that the stone chime punching position cannot be correctly determined in the prior art is mainly solved. According to the technical scheme, the system for measuring the punching position of the stone chime comprises a stone chime bracket, stone chime excitation equipment, laser vibration measurement equipment and a computer system, the stone chime bracket is placed on the ground, and the detected imporous stone chime is hung on the stone chime bracket; the stone chime excitation equipment and the laser vibration measurement equipment are arranged on the front side and the back side of the detected non-porous stone chime and are connected with the computer system. The method comprises the following steps: 1, measuring the position of the mass center of the pore-free stone chime to be measured; 2, measuring a frequency response curve of the measured pore-free stone chime and drawing a vibration mode diagram; and step 3, determining the punching position of the detected pore-free stone chime by analyzing a frequency response curve and the vibration mode diagram and combining the mass center position obtained in the step 1.

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 relates to the technical field of interface reinforcing agent preparation, in particular to an interface reinforcing agent for improving the cementing quality of a well cementation two-interface, a preparation method of the interface reinforcing agent, an interface modification prepad fluid and a preparation method of the interface modification prepad fluid. The raw materials comprise styrene, acrylic acid, acrylonitrile, acrylamide, acrylic acid-2-hydroxyethyl ester, an initiator, styrene, butadiene, an initiator, calcium oxide and deionized water. The interface reinforcing agent for improving the cementing quality of the well cementation two-interface is good in compatibility with drilling fluid, and interface modified prepad fluid obtained by taking the interface reinforcing agent for improving the cementing quality of the well cementation two-interface as a raw material has good suspension stability and filtration loss control capability; the cementing strength of a well cementation interface can be effectively improved, and the cementing quality of the well cementation interface is remarkably improved, so that the purpose of preventing annulus channeling or annulus pressure is achieved.

The invention discloses an emulsifier for oil-based petroleum drilling fluid and a preparation method of the emulsifier, and belongs to the technical field of petroleum drilling, the emulsifier comprises an emulsion A and an emulsion B, the weight ratio of the emulsion A to the emulsion B is (1.5-2): 1, the emulsion A is formed by mixing a polyesteramide emulsion and a polyamide emulsion, and the preparation method comprises the following steps: preparing the emulsion A, preparing the emulsion B and preparing the emulsion B; the emulsion A and the emulsion B are mixed and cooled to form the emulsifier, and the emulsion A and the emulsion B are mixed, so that when the emulsion formed by the technical scheme is used, the emulsion has relatively high high-temperature and high-pressure resistance, the filter vector of the drilling fluid is reduced, the suspension stability and the flowability of the drilling fluid are improved, and the emulsion has the effects of high emulsification and high wettability; according to the present invention, the oil-based petroleum drilling fluid has characteristics of high viscosity, high stability during use, easy use in the oil-based petroleum drilling fluid, simple process during preparation, and easy large-scale production.

The present invention belongs to the technical field of oilfield chemistry, and specifically relates to a high-temperature tackifying multifunctional additive for oil well cement, and a preparation method and application thereof. The high-temperature tackifying multifunctional additive for oil well cement of the present invention is formed by copolymerization of the following monomers: 2-10 parts by weight of anionic monomer, 0.5-5 parts by weight of rigid monomer, 0.2-3.8 parts by weight of carboxylic acid monomer, 0.5-4.5 parts by weight of cationic monomer, 0.5-10 parts by weight of ether monomer, and 0.2-5.5 parts by weight of cross-linking monomer. The high-temperature tackifying multifunctional additive for oil well cement of the present invention has low viscosity, good fluidity, good compatibility, multiple functions, is beneficial to offshore cementing construction operations, and improves operating efficiency.

The application discloses a Hall screening and suspension performance improvement method for a bearingless motor under a Hall asymmetry, and belongs to the technical field of motor control. In view of the problem that the inherent asymmetry of a Hall leads to a decline in suspension performance, a function model with a Hall asymmetry A as an independent variable is first constructed to quantitatively describe the influence of A on displacement detection; and a closed-loop transfer function fusing A is then established. On this basis, a Hall screening strategy based on a critical proportionality degree method is proposed: the integral and differential parameters are set to zero, the proportional gain is gradually increased to obtain a critical gain K U and a critical period T U , the to-be-tested control parameters are calculated according to a PID parameter setting rule, and are substituted into the system to determine whether the displacement converges, so as to determine the availability of the Hall off-line. For the available Hall, the optimized PID control parameters are directly used, and repeated trial and error is not needed. The application can quickly screen qualified Halls and automatically set optimal PID parameters, and significantly improves the stability of a suspension system and the debugging efficiency.

The invention discloses a nano-diamond polishing solution which is prepared from the following raw materials in parts by weight: 5-10 parts of modified diamond micro powder, 80-100 parts of water, 0.5-2 parts of a photocatalyst, 0.5-1 part of an oxidizing agent and 0.5-1 part of a dispersing agent, and the pH of the polishing solution is adjusted to be 8 by using a pH regulator, wherein the modified diamond micro-powder is diamond micro-powder treated by a silane coupling agent, and the silane coupling agent is tetraethoxysilane. The modified diamond micro-powder adopted by the invention is the diamond micro-powder treated by a silane coupling agent, and the silane coupling agent is tetraethoxysilane, so that the nano-diamond micro-powder is subjected to modification treatment by adopting tetraethoxysilane; the surface of the nano-diamond micro powder is covered with a layer of continuous and compact nano amorphous silicon dioxide film containing active oxygen groups, so that aggregation of nano-diamond particles is prevented, the dispersity and suspension stability of the nano-diamond particles are improved, the overall performance of the polishing solution is improved, and the surface quality of a workpiece is guaranteed.

The utility model relates to the technical field of insulation hooks, in particular to a cable insulation hook in a plant. The cable insulation hook in the plant comprises a first insulation arc plate and a handle, a square hole is formed in the front side of the first insulation arc plate, a square column is arranged in the square hole, a second insulation arc plate is arranged on the front side of the square column, an insulation connecting plate is arranged on the rear side of the first insulation arc plate, and the handle is arranged on the insulation connecting plate. The first insulating arc plate and the second insulating arc plate are matched with each other to form a hook, the handle is pulled rightwards to drive the plug pin to be separated from the first through hole of the square column, so that the second insulating arc plate can be pulled forwards, and when the handle is loosened, the resilience force of the spring is utilized to drive the plug pin to be inserted into the second through hole and the first through holes at different positions. Therefore, the position of the square column is fixed, the distance between the second insulating arc plate and the first insulating arc plate can be quickly changed, and cables of different sizes can be hung on the first insulating arc plate and the second insulating arc plate.

The invention belongs to but not limited to the technical field of suspension fertilizer preparation, and particularly relates to a gelatin-based hydrogel macroelement suspension fertilizer preparation method, which comprises: 1, weighing raw materials according to a certain ratio; step 2, soaking gelatin in distilled water for 24 hours, putting a mixture of the gelatin and the distilled water into a stirrer, and heating and stirring in a water bath at 70 DEG C until the gelatin is completely dissolved; step 3, adding citric acid into the gelatin solution, continuously heating in a water bath at 70 DEG C for 2.5 hours, and cooling to room temperature to form gelatin-based hydrogel; 4, uniformly mixing the distilled water and the amino acid waste liquid through mechanical stirring; 5, increasing the rotating speed, adding gelatin-based hydrogel, and stirring until a large number of bubbles are generated; and step 6, grinding urea, monoammonium phosphate, potassium chloride, bentonite and potassium fulvate, increasing the rotating speed, sequentially feeding at the same time interval, and homogenizing for 30 minutes after the feeding is finished.

The invention belongs to the technical field of food processing, and relates to a melon rind source stabilizer, an extraction method thereof and application of the melon rind source stabilizer in watermelon juice. The extraction method comprises the following steps: S1, preparing watermelon peel pulp: taking inner peels of watermelons, adding water, and crushing into the watermelon peel pulp; step S2, alkaline hydrolysis ester removal: regulating and controlling a water medium microenvironment to enable the pH value of the melon rind pulp to be 10-13, and reacting at room temperature to remove methyl ester groups; then filtering and washing in sequence to obtain watermelon peel residues; and S3, low-temperature high-pressure homogenization and vacuum freeze drying are combined. The watermelon peel source stabilizer is extracted from watermelon inner peel pulp through alkaline hydrolysis ester removal and low-temperature high-pressure homogenization combined with vacuum freeze drying treatment, has a good network framework, and is not prone to molecular chain breakage, charge shielding or dehydration shrinkage in ultrahigh-pressure sterilization, so that the stability of watermelon juice is improved, and the stability of the watermelon juice is improved. Particularly, the double-effect stability of lycopene and juice in the watermelon juice can be regulated and controlled.

The invention discloses fluorine-doped CeO2 abrasive particles and a preparation method and application thereof.The preparation method includes the steps that a cerium source and a soluble carbonate precipitator are subjected to an aging reaction to obtain a cerium-based precursor, and the cerium-based precursor, fused salt and a fluorinating agent are mixed and then roasted to obtain the fluorine-doped CeO2 abrasive particles; the synthesis method is simple, the size is controllable, the particle size distribution is uniform, the dispersity is good, and the spherical fluorine-doped CeO2 abrasive particles are obtained; the fluorine-doped CeO2 abrasive particle polishing solution has the advantages of excellent chemical mechanical polishing property, good suspension stability, slow sedimentation rate, large absorbance and large Zeta potential absolute value; when the polishing solution prepared from the sphere-like fluorine-doped CeO2 abrasive particles synthesized by the method is used for processing the surface of quartz glass, the material removal rate reaches 819.89 nm / min, a high material removal rate is obtained, due to the fact that the fluorine-doped CeO2 abrasive particles synthesized by the two-step method have high chemical activity, the material removal rate is favorably improved, and a settlement test finds that the material removal rate is greatly improved. And the suspension dispersion stability of the fluorine-doped CeO2 abrasive particles is improved.

The present invention relates to a cockpit painting clamping suspension device, comprising a paint liquid recovery tank for recovering excess paint liquid, a rotating mechanism provided on the paint liquid recovery tank, and a bracket provided on the rotating mechanism. The cockpit painting clamping suspension device, by arranging a rotating mechanism in the paint liquid recovery tank, when the cockpit is suspended by an L-shaped hook, the rotating mechanism can drive the cockpit to rotate and adjust, thereby facilitating the staff to perform painting operations and improving the painting efficiency, and at the same time, the excess paint liquid can be filtered and collected, by arranging a fixing mechanism on the bracket, when the cockpit is suspended, the cockpit can be auxiliary fixed by the fixing mechanism, the suspension stability of the cockpit is improved, and the cockpit is prevented from shaking, by arranging a dustproof mechanism in the paint liquid recovery tank, when the suspension device is not in use, the dustproof mechanism can seal the top surface of the paint liquid recovery tank, thereby preventing dust from entering the paint liquid recovery tank, and improving the subsequent paint liquid recovery efficiency.

The invention relates to the technical field of pesticides, in particular to a composition containing hexaflutoxapyrad as well as a preparation method and application of the composition. The invention relates to a composition containing hexafluzapyrad, which is prepared from the following preparation raw materials in parts by mass: 15 to 18 parts of active ingredients, 4 to 6 parts of surfactants, 2 to 3 parts of ethylene glycol, 4 to 5 parts of thickening agents, 0.3 to 0.5 part of defoaming agents, 4 to 5 parts of composite synergists, 2 to 3 parts of composite dispersing agents, 0.5 to 0.8 part of preservatives, 5 to 6 parts of propylene glycol methyl ether acetate and 70 to 75 parts of water, wherein the active component is prepared by mixing hexaflutolfenpyrad and chlorfenapyr according to a mass part ratio of 3: 2. The composition containing hexafluzapyrad has the advantages of synergistic interaction, high selectivity, environmental compatibility, environmental pollution reduction, cost saving and the like, can effectively prevent and control pests such as thrips, beet armyworms and plutella xylostella, and improves the utilization rate and the prevention and control effect of pesticides.