49results about How to "Not prone to subsidence" patented technology

The invention discloses anti-dazzle glass etching liquid which comprises, by weight parts, 35-45 parts of hydrofluoric acid, 5-10 parts of ammonium bifluoride, 12-20 parts of ammonium fluoride, 2-10 parts of calcium fluoride, 1-5 parts of potassium bifluoride, 10-25 parts of ammonium chloride, 3-10 parts of potassium sulfate, 1-5 parts of barium sulfate, 1-5 parts of potassium phosphate, 0.1-3 parts of sodium fluoroborate, 1-3 parts of agar, 1-3 parts of sodium alginate, 2-5 parts of sodium carboxymethyl cellulose, 0.1-2 parts of silica sol, 0.2-1.5 parts of butadiene styrene rubber, 1-3 parts of propylene glycol, 1-5 parts of propylene glycol, 1-5 parts of propanediol, 0.5-2 parts of sucrose, 30-50 parts of sulfuric acid solution and 100-150 parts of water. The invention further provides a method for preparing the anti-dazzle glass etching liquid. A process is simple, the conditions are moderate, the obtained etching liquid is good in stability; and prepared anti-dazzle glass is high in transmittance and degree of atomization, excellent in impact resistance and good in anti-dazzle effect.

The invention relates to the field of ceramic materials, and particularly discloses a low-temperature sintered aluminum nitride ceramic material, aluminum nitride tape casting slurry and application. The aluminum nitride ceramic material comprises aluminum nitride ceramic powder, a sintering aid A and a sintering aid B, wherein the sintering aid A is one or a combination of more of AlF3, LiF and metal Li powder, and the sintering aid B is one or a combination of more of CaF2, YF3, Y2O3 and Dy2O3; the mass of the sintering aid A is 4-7% of the total mass of the aluminum nitride ceramic powder, and the dosage of the sintering aid B is 2.5-4.5% of the total mass of the aluminum nitride ceramic powder. The aluminum nitride tape casting slurry comprises an organic solvent, a dispersing agent, a defoaming agent, an adhesive, a plasticizer and the aluminum nitride ceramic material. According to the aluminum nitride ceramic product prepared from the aluminum nitride ceramic material, the sintering temperature is reduced to 1300-1450 DEG C, low-temperature sintering is achieved, and the prepared aluminum nitride ceramic product has excellent thermal properties.

The invention provides membraneless fuel cell catalyst slurry and methods for preparing the catalyst slurry and an electrode. The catalyst slurry comprises a solid catalyst, a dispersing agent, a connecting material and an auxiliary. The preparation method of the catalyst slurry comprises the following steps: stirring and mixing the auxiliary, the connecting material and the dispersing agent to obtain paste type slurry; and then adding the catalyst into the paste type slurry during high-speed stirring, and stirring to obtain the evenly dispersed catalyst slurry. The invention further provides a preparation method of an electrode assembly. The slurry is good in dispersity and high in stability, not only can the catalyst agglomeration phenomenon be avoided, but also the usage amount of precious metal platinum can be reduced, and the catalyst can form a uniform and compact thin membrane on a substrate. The catalyst slurry and electrode assembly preparation methods are simple, convenient to operate, and strong in repeatability, and is suitable for continuous production, and the large-scale popularization and application is facilitated.

The invention relates to a high-strength low-stretch chinlon 6 short fiber and a preparation method thereof. The method includes: spinning high-strength low-stretch chinlon 6 melt to prepare the high-strength low-stretch chinlon 6 short fiber, wherein the high-strength low-stretch chinlon 6 is produced through a reinforcing powder surface chain propagation reaction, a ring-opening pre-polycondensation reaction, a final polycondensation reaction, and a tackifying reaction from a mixture, which is mainly composed of: caprolactam, the reinforcing powder coated with a catalyst, and water. The produced high-strength low-stretch chinlon 6 short fiber is 0.89-2.22 dtex in linear density, not less than 6.0 cN / dtex in breaking strength and not more than 45% in breaking elongation. The reinforcing powder can enhance mechanical performances of the chinlon 6 short fiber; by means of the reinforcing powder surface chain propagation reaction, the reinforcing powder can be dispersed completely in thefiber, so that the chinlon 6 short fiber has good mechanical performances, uniform strength distribution and high quality.

The present invention relates to a preparation method for an environmental-protection and odorless anti-scratch polyurethane wood matt black top coat, which comprises double components A and B according to a weight ratio of 1:0.5, wherein the component A comprises a odorless anti-scratch alkyd resin, matting powder, a dispersant, a carbon black color paste, a modified leveling agent, a defoamer, an anti-sedimentation agent and a solvent, and the component B comprises TDI, a HDI trimer or a benzene-free curing agent adopting the adduct as the main component. According to the present invention, the prepared matt black top coat of the present invention does not contain aromatic hydrocarbons, aldehydes, ketones and heavy metals, and the odorless effects is achieved after the paint film is dried for 48 h; the matt black top coat has characteristics of no precipitate during storage, high solid while low viscosity, good leveling property, thick film formed in one time, no sagging, soft handfeeling, plump, delicate, solemn, rigid, soft, and full mirror-like decorative effect, and elegant and comfortable feeling, is adapted to the modern aesthetics, is popular in markets and customers, and is widely applied on the surface of wood ware, metal, plastics and other products so as to provide the protection decoration effect.

The invention discloses a pipe sinking pressure fillingconstruction method of a cast-in-place pile, and relates to building technology.The pipe sinking pressure fillingconstruction method of the cast-in-place pile is used for solving the problem of poor quality of ordinary pressure-filled piles andcomprises the following steps that construction is prepared, a pile machine and a pile pipe are assembled in a pile position, and the pile pipe is kept vertical; asinking pipe is stricken inwardly, aninwardly stricken hammer directly acts on a bottom plate, so that the pile pipe sinks into a soil layer to form a pile hole; concrete is subjected to pressure filling, the concrete is poured under the bottom plate, and the pile pipe is pulled upwards to be separated from the pile hole; areinforcement cage is inserted in a vibration mode, the reinforcement cage is inserted into the pile hole to complete pile foundation construction; the hammering method directly applying the force to the bottom plate causes the pile pipe to be pulled during the process of penetrating the soil layer, so that the pile pipe is not prone to producing bending deformation under the action of the hammering force, and the pile hole forming quality is higher, meanwhile the pile pulling method of pushing the pile pipe to float by the poured concrete can always press the inner wall of the pile hole, so that the pile hole is also not prone to producing shrinkage during the floating of the pile pipe, and thus the pile foundation is better in pile quality.

The invention relates to a preparation method of a benzene-free odor-free scratch-resistant polyurethane matt gloss white topcoat for woodware. The benzene-free odor-free scratch-resistant polyurethane matt gloss white topcoat is composed of a component A and a component B which are in the weight ratio of 1:0.5, wherein the component A is composed of odor-free alkyd resin, titanium dioxide, matting powder, calcium carbonate powder, a dispersing agent, an anti-yellowing agent, a flatting agent, a hand feeling agent, a defoaming agent, an anti-settling agent and a solvent; and the component B is a benzene-free curing agent with TDI, an HDI tripolymer or an addition product as a main component. The matt gloss white topcoat prepared by using the preparation method does not contain arene, aldehyde ketone or heavy metals, and no residual odor is left on a paint film after 48 hours; the matt gloss white topcoat can not be settled when being stored, is good in flatting performance, capable of forming a thick film at one step without sagging, soft in hand feeling, full and exquisite, slippery, good in scratch resistance and capable of generating a mirror-surface-like full decorative effect and bringing elegance and comfort for people, and conforms to the modern aesthetic view so as to be popular to the market and consumers; and the matt gloss white topcoat is widely applied to the surfaces of woodware, metals, plastics and other products to take protective and decorative effects.

The invention provides a paint-oriented composite titanium dioxide which comprises titanium dioxide and calcined kaolin. The weight ratio between the titanium dioxide and calcine kaolin is 60%-95%:40%-5%; the average particle size of the titanium dioxide satisfies: 0.1Mum<=D50 titanium dioxide<=5Mum. The average particle size of the calcine kaolin satisfies: 0.1Mum<=D50 calcine kaolin<=5Mum. Besides the absolute value DeltaD of the difference between D50 titanium dioxide and D50 calcine kaolin satisfies: DeltaD<=2Mum. The composite titanium dioxide provided by the invention can be applied in paints, achieve a better dispersion and better stability of paint liquid, improves the application performance of the paints. Further the titanium dioxide enjoys a high fluidity in the paints which can facilitate the average distribution of the paints and offers better workable characteristics.

The invention provides a background-color-free three-layer coating process. The process comprises the following steps of step S1. coating an organic light guide drum base with carrier barrier layer paint so as to form a carrier barrier layer, wherein the carrier barrier layer paint is prepared as follows: nylon resin and titanium dioxide are prepared into a solution with the solid content of 3 to 7 percent by utilizing a solvent; step S2. coating the carrier barrier layer with carrier forming layer paint to form a carrier forming layer, wherein the carrier forming layer paint contains TiOPc and polyvinyl butyral resin, and the ratio of the TiOPc to the polyvinyl butyral resin is 1:1 to 1.5:1; and step S3. coating the carrier forming layer with carrier transmission layer paint to form a carrier transmission layer. The preparation process of the coating solution is simple, the coating solution is easy to store, the phenomenon such as precipitation and crystallization cannot occur easily, the production cost is low, and the application property of a prepared drum core cannot lose easily due to the pollution or fracturing or stripping of the coating.

The invention discloses a construction method of a porous pavement. The problems that in the flood season, a basic pavement layer of a porous pavement in the prior art is likely to be soaked softly byaccumulated water, strength is reduced, and an upper porous brick layer settles are solved. The method is technically characterized in that the method includes the steps that a roadside ditch is excavated, wherein an excavator is used for excavating the roadside ditch for containing a pavement layer; a leveling basic layer is built, the bottom face of the roadside ditch is trimmed, so that the bottom face is level, the bottom face of the roadside ditch is compacted through a road roller and paved with graded broken stone, and the upper surface of the graded broken stone is level; a basic pavement layer is built on the leveling basic layer, supporting bodies are arranged at intervals, and filling spaces used for filling porous base bodies are formed between the supporting bodies; the filling spaces are filled with the porous base bodies, and a supporting face used for supporting a porous face layer is formed by the porous base bodies and the upper ends of the supporting bodies; the porous face layer is built on the basic pavement layer; and a road is maintained. The method has the beneficial effects that the strength of the pavement is improved, and a pavement settlement phenomenonis reduced.

The invention discloses an environment-friendly stable curing ink and a preparation method thereof. The environment-friendly stable curing ink comprises the following raw materials in parts by weight:30-40 parts of ink base solution, 0.8-1 part of anti-static-electricity agent, 1-2 parts of antioxygen, 0.5-0.9 part of graphene, 2-4 parts of coupling agent, 1-3 parts of wetting and slipping agent,1-3 parts of adhesive force enhancer, 2-4 parts of nanometer material suspension, 0.7-1.1 parts of defoamer, 0.6-0.8 part of flatting agent, 6-8 parts of photoinitiator, 8-12 parts of coloring powder, 6-8 parts of isoamylol, 4-6 parts of ethylene glycol monoethyl ether acetate and 1-3 parts of filler. The environment-friendly stable curing ink has the advantages of evenness in distribution, goodbinding and curing degree, fine and stable material, small possibility of aggregation, good tinting degree, high temperature resistance, oxidization resistance, evenness and high speed in drying, tough and wear-proof coating, quickness and efficiency in printing and excellent storage stability. Meanwhile, the environment-friendly stable curing ink has the advantages of safe, reliable and environment-friendly raw material ingredient, low cost, simple technology, high practical value and good application prospect.

Provided is a water-based ink composition, which exhibits excellent continuous lettering stability even at a high temperature environment. The water-based ink composition, including a pigment and water, is characterized in that the viscosity at 20 DEG C is in a range of 2 mPa*s to 7 mPa*s, and a yield value at 20 DEG C is less than 0.2 mPa, and the yield value at 20 DEG C when 25% of the water evaporates is less than 0.8 mPa.

The invention relates to a chinlon 6 short fiber having cool feeling and a preparation method thereof. The method includes: spinning chinlon 6 chips, having cool feeling, to manufacture chinlon 6 short fiber having cool feeling; wherein the chinlon 6 having cool feeling is prepared through a cool feeling functional powder surface chain growth reaction, a ring opening pre-polycondensation reactionand a finish polycondensation reaction successively from a mixture; the mixture is composed mainly of the cool feeling functional powder coated with a catalyst, a phase-change material, caprolactam and water; the cool feeling functional powder surface chain growth reaction is that caprolactam, enriched on the surface of the cool feeling functional powder, is polymerized under effect of a catalystto form a linear molecular chain. The Qmax of the chinlon 6 short fiber having cool feeling is 0.15-0.35 W / cm<2>; after contact with human body, the time of reaching balance is 30-40 s. The preparation method is less in side reactions and has high reaction rate and efficiency. The chinlon 6 short fiber can durably hold a cooling feeling even at a high temperature and is high in promotion value.

The invention discloses water-permeable type facing bricks and an installation method thereof. Each water-permeable type facing brick comprises a reinforcement skeleton and a facing brick main body, the facing brick main bodies are arranged inside the reinforcement skeletons, the upper surfaces of the facing brick main bodies are provided with water guide grooves, the bottoms of the water guide grooves are formed slantingly, and water permeating holes are formed in the tail ends of the water guide grooves; each facing brick main body is divided into a water permeating part and a water collecting part, the water collecting parts are hollow cavities, water outlet holes are formed in the bottoms of the water collecting parts, and water guide pipes are arranged in the bottoms of the water outlet holes in the vertical direction; and the water guide pipes are fixedly connected with the reinforcement skeletons. The installation method of the water-permeable type facing bricks comprises the following steps that a, original soil layers in the position of installing the water-permeable type facing bricks are tamped, base layers pre-reserved water guide pipe holes are laid, and then sand layers are laid around the water guide pipe holes; b, the water-permeable type facing bricks are laid on the sand layers; and c, after laying, gaps among the water-permeable type facing bricks are filled with fillers, and the maintenance time is 6-10 days. The problem of poor water permeability of existing floor facing bricks is resolved.

The invention belongs to the technical field of materials, and discloses a water-based dispersant which is mainly prepared from the following raw materials in parts by weight: 10-30 parts of benzyl methacrylate, 0.5-15 parts of methacrylate, 0.1-5 parts of an initiator and 50-90 parts of a solvent. According to the invention, the benzyl methacrylate and the methacrylate are adopted as monomers toprepare the dispersant under the action of the initiator, and the chemical structure of an aromatic ring of benzyl methacrylate is utilized to generate pi bond adsorption force, so the dispersant canbe stably adsorbed on the surfaces of pigment particles; the methacrylate has hydrophilicity and can be dissociated into ions in water, so water solubility can be greatly improved, and the prepared water-based dispersant has strong acting force with organic pigments, is not easy to fall off and replace and has good water solubility. Therefore, the water-based dispersant is good in wettability anddispersity and high in stability. Color paste prepared from the water-based dispersant is not prone to sedimentation, flooding and unstable dispersion.

The invention relates to an inspection well installation structure and construction method, and belongs to the technical field of inspection well construction. The structure comprises a first foundation pit, a second foundation pit and a base arranged in the first foundation pit, wherein an inspection well is arranged on the base, a well seat is arranged at the top end of the inspection well, a well cover is arranged on the well seat, a plurality of stand columns are arranged between the inspection well and the side wall of the first foundation pit, pressure bearing rings are detachably arranged at the top ends of the stand columns, a lower foundation soil layer is arranged below the pressure bearing rings and arranged between the side wall of the first foundation pit and the outer peripheral surface of the inspection well, an upper foundation soil layer is arranged above the pressure bearing rings and arranged between the side wall of the first foundation pit and the outer peripheralsurface of the inspection well, and an asphalt layer is arranged between the well seat and the second foundation pit. According to the structure and the method, the thickness of the upper foundation soil layer above the pressure bearing rings is relatively thin, so that the upper foundation soil layer can be easily compacted, and when the lower foundation soil layer below the pressure bearing rings settles, the pressure bearing rings do not settle along with the lower foundation soil layer under the supporting effect of the stand columns, so that the phenomenons of settling and cracking of pavements surrounding the well cover is reduced.

The invention relates to a semitransparent mahogany calcined umber smell cleaning type polyurethane woodenware paint and a preparation method thereof. The paint comprises a component A and a component B according to a weight ratio of 1:0.5; the component A is composed of smell cleaning type alkyd resin, extinction powder, a dispersant, an imitation mahogany color paste, a leveling agent, an antifoaming agent, an anti-settling agent and a solvent; and the component B is a non-benzene curing agent based on TDI and HDI trimer or adduct. The semitransparent mahogany calcined umber smell cleaning type polyurethane woodenware paint prepared in the invention does not contain aromatic hydrocarbons, aldehyde, ketone or heavy metals, and can reach a smell cleaning effect 48h after a film is formed by coating the paint; the paint has the advantages of no settlement, good levelability, good handle, high scratch resistance and no ghosting in the storage process; and the paint can be coated on woodenware to realize clear and intensive wood grains and make furniture elegant, noble, natural and comfortable, adapts to modern aesthetics, is popular in the market and is loved by users. The paint can be widely used to realize surface decoration protection of woodenwares, metals and plastics.

The invention relates to a preparation method of a non-benzene low-odor / odor-free type scratch-resistant polyurethane woodware matte black finishing paint composed of a component A and a component B with the weight ratio of the component A to the component B of 1:0.5; the component A is composed of a non-benzene low-odor / odor-free type scratch-resistant alkyd resin, an extinction powder, a dispersing agent, a carbon black color paste, a modified levelling agent, a defoamer, an anti-settling agent and a solvent; the component B is a non-benzene curing agent with a TDI trimer, an HDI trimer or an addition product as a main component. The prepared matte black finishing paint does not contain aromatic hydrocarbon, aldehyde ketone or heavy metals, and a paint film has no odor after 48 hours after spraying; the prepared matte black finishing paint is not precipitated when stored, is high in solid content, low in viscosity, good in levelling performance, capable of forming a thick film at one step without sagging, soft in hand feeling, full and exquisite, solemn, hard and soft, and capable of generating a mirror-surface-like full decorative effect, brings elegance and comfort for people, and conforms to the modern aesthetic view so as to be popular to the market and consumers; and the matte black finishing paint is widely applied to the surfaces of woodware, metals, plastics and other products for protection and decoration.

The invention discloses a preparation method of a safe healthy strawberry beverage. The preparation method comprises the following steps of removing impurities from strawberries, performing thorough cleaning, performing crushing, performing pulping, adding malic acid, levulose, gamma-cyclodextrine and rum, and performing treatment with a colloid mill so as to obtain pretreated strawberry slurry; and adding rice flour and water to the pretreated strawberry slurry, performing uniform mixing, performing inoculation with acetic acid bacteria, performing fermentation, performing filtration, addingroyal jelly, mogroside and pretreated corn starch to filtrate, performing uniform mixing, performing filling, and performing high-temperature sterilization so as to obtain the safe healthy strawberrybeverage, wherein the pretreated corn starch is prepared by the following technologies of pasting corn starch, adding nonfat dry milk and water, performing uniform stirring, adding citric acid laurin,performing homogenizing treatment, performing filtration, performing washing, and performing spray drying so as to obtain the pretreated corn starch.

The invention discloses an insecticidal composition containing fluopyram, and relates to the field of pesticides. A preparation method comprises the following steps: adding maleic anhydride, polyethylene glycol and a catalyst into a four-neck flask to obtain an intermediate A, and adding the intermediate A, methacrylic acid and furfuryl hydrogen methacrylate into a conical flask to obtain a monomer solution; adding sodium hydrogen sulfite and a solvent methanol into a four-neck flask, and dropwise adding a monomer solution and an ammonium persulfate solution to obtain the dispersing aid; therefore, the problems that pesticides are poor in dispersity in the using process and cannot be easily adsorbed to leaf surfaces and root systems of plants after being sprayed, and the pesticide effect is reduced are solved. The hydrophobic property of the main chain of the molecule, the hydrophilic property of the side chain and the existence of the side chain play a three-dimensional stabilizing role to prevent irregular agglomeration, so the dispersion of pesticide particles is facilitated, sedimentation and flocculation are not liable to occur, the viscosity of the dispersion system is obviously reduced, and the aim of improving the dispersity is fulfilled.

The invention discloses a gelatine powder modified emulsified asphalt and a preparation method thereof. The gelatine powder modified emulsified asphalt is prepared from, by weight percent, 45-58% of matrix asphalt and 42-55% of geltatine powder dispersing fluid; the geltatine powder dispersing fluid is prepared from, by weight percent, 20-25% of pretreatment rubber powder, 0.5-1.0% of emulsifier A, and allowance of water. The gelatine powder modified emulsified asphalt can keep stable for a long time, and the evaporation residue performance is obviously better than the technical index of the rubber asphalt.

The invention relates to an inspection well installation structure and a construction method thereof, belonging to the technical field of inspection well construction, comprising a first foundation pit, a second foundation pit, and a base arranged in the first foundation pit, and the inspection well is installed on the base , a well base is installed on the top of the inspection well, a well cover is installed on the well base, a plurality of columns are arranged between the inspection well and the side wall of the first foundation pit, and a pressure ring is detachably installed on the top of the column, and the side wall of the first foundation pit There is a lower foundation soil layer below the bearing ring between the inspection well and the outer peripheral surface of the inspection well, and an upper foundation soil layer is arranged above the pressure bearing ring between the side wall of the foundation pit and the outer peripheral surface of the inspection well, and the well seat and the second foundation pit There is an asphalt layer in between. The thickness of the upper foundation soil layer above the bearing ring is relatively thin, and it is easy to compact the upper foundation soil layer. However, when the lower foundation soil layer below the bearing ring subsides, the pressure bearing ring will not follow the lower foundation soil under the support of the column. The subsidence of the base soil layer reduces the occurrence of settlement and cracking of the road surface around the manhole cover.

The invention relates to a translucent orange-brown calcined Sienna odorless polyurethane wood lacquer and a preparation method thereof, wherein the translucent orange-brown calcined Sienna odorless polyurethane wood lacquer comprises a component A and a component B according to a weight ratio of 1:0.5, the component A comprises an odorless alkyd resin, matting powder, a dispersing agent, an orange-brown pigment paste, a leveling agent, an antifoaming agent, an anti-settling agent and a solvent, and the component B is a benzene-free curing agent using TDI, HDI trimer or an adduct as a main component. According to the present invention, the prepared translucent orange-brown calcined Sienna odorless polyurethane wood lacquer does not contain aromatic hydrocarbons, aldehyde ketone and heavy metals, and the odorless effect is achieved at 48 h after the wood lacquer is coated to form the film; the wood lacquer does not precipitate during the storing, and further has characteristics of goodleveling property, good hand feeling, high scratch resistance and no ghost; after the woodware is coated with the wood lacquer, the wood grain is clear and thorough, and the furniture is elegant, noble, simple and natural, can make people feel elegant and comfortable, is adapted to the modern aesthetics, and is popular in the market and is loved by customers; and the translucent orange-brown calcined Sienna odorless polyurethane wood lacquer is widely used for the surface decoration protection of woodware, metals, plastics and the like.

The invention relates to semi-transparent santos rose wood color raw umber flavor-clearing type polyurethane wood paint and a preparation method, the semi-transparent santos rose wood color raw umber flavor-clearing type polyurethane wood paint comprises a component I and a component II, the weight ratio of component I to component II is 1:0.5; the component I comprises flavor-clearing type alkyd resin, matting powder, a dispersant, santos rose wood color paste, a leveling agent, a defoaming agent an anti settling agent and a solvent; the component II is a benzene free curing agent mainly comprising TDI and HDI trimer or an addition product; the prepared semi-transparent santos rose wood color raw umber flavor-clearing type polyurethane wood paint is free of aromatic hydrocarbons, aldehydes, ketones and heavy metals, can achieve the flavor-clearing effect 48 hours after coating into a film, may not precipitate during storage, and is good in leveling property, good in hand feeling, high in scratch resistance and free of ghost image; after a wooden ware is coated with the paint, the wood grain is clear and incisive, so that the furniture is elegant, simple and natural, an elegant and comfortable feeling is given to people, and the wood paint adapts to modern aesthetics, is very popular with the market and customers, and can be widely used in surface decoration protection of wood wares, metals, plastics and the like.

The invention relates to single crystal magnetic powder and a magnetorheological fluid thereof, and a method, and specifically provides a magnetorheological fluid containing single crystal magnetic powder. The magnetorheological fluid comprises: single crystal magnetic powder and a fluid used as a carrier fluid, wherein the single crystal magnetic powder is dispersed and distributed in the fluid.Compared with the traditional magnetorheological fluid, the magnetorheological fluid containing the single crystal magnetic powder prepared according to the invention has huge irreplaceable advantages, wherein the material has the performance advantages of being high in specific magnetic saturation intensity, capable of obtaining high working shear stress under the same magnetic field intensity, fast in response, not prone to sedimentation, low in viscosity, low in component abrasion rate, long in service life, high in reliability, quick in response and the like.

The invention discloses an abamectin nano-emulsion and a preparation method thereof in the technical field of insecticides. The formula of the abamectin nano-emulsion comprises the following components in percentage by weight: 0.5-5% of abamectin, 5-30% of a solvent, 5-10% of an emulsifier and the balance being water. The preparation method is a low-energy emulsification method. The abamectin nano-emulsion prepared by the method has the characteristics of high storage stability, low emulsifier dosage, simple processing, obvious prevention and treatment effect and the like, and meanwhile, the abamectin nano-emulsion prepared by the method uses a green and environment-friendly organic solvent, is safe to human and livestock, and has good environmental compatibility.