47results about How to "No stratification" patented technology

The invention provides an emulsion slow crosslinking type plugging control gel, which is in an oil-in-water type, and is prepared from the following raw materials in percentage by weight: 25 to 40 weight percent of nonionic monomer, 0.5 to 2 weight percent of dihydroxy anthraquinone, 5 to 16 weight percent of anionic monomer, 0.002 to 0.2 weight percent of initiator and the balance of water. The emulsion comprises the following components in percentage by weight: 10 to 35 percent of deionized water, 15 to 30 percent of non-polar solvent, 2 to 8 percent of emulsifier, 1 to 4 percent of emulsifying aid and 0.5 to 1.5 percent of phase inversion agent. According to the plugging adjusting gel, the modified functional monomer dihydroxy anthraquinone is added, and the dihydroxy anthraquinone and monomers such as acrylamide are copolymerized to form oil-in-water type polymer gel, so that the initial viscosity is low, the strength and the plugging rate are high, and the gelling time is controllable.

The invention relates to the technical field of water-based coatings, in particular to a multifunctional anti-fouling, dirt-resistant and acid-base-resistant water-based coating and a preparation method thereof.The multifunctional anti-fouling, dirt-resistant and acid-base-resistant water-based coating is prepared from, by weight, 70-80 parts of acrylic emulsion, 0.5-1.5 parts of methacryloyloxyethyl trimethyl ammonium chloride, 1-3 parts of 3-glycidyloxypropyltrimethoxysilane, 1-3 parts of sodium dodecyl sulfate, 1-3 parts of sodium dodecyl sulfate, 1-3 parts of sodium dodecyl sulfate, 1-3 parts of sodium dodecyl sulfate, 1-3 parts of sodium The coating is prepared from the following components in parts by weight: 0.2 to 0.6 part of a povidone-iodine compound, 0.2 to 0.6 part of a polydimethylsiloxane defoaming agent, 0.3 to 0.8 part of a polyether modified polysiloxane flatting agent, 4 to 10 parts of a coalescing agent, 0.2 to 1 part of a nano silicon dioxide modified wax wear-resistant additive, 3 to 5 parts of polytetrafluoroethylene wax emulsion, 0.1 to 0.2 part of a mildew-proof bactericide, 0.2 to 0.6 part of a nonionic polyether wetting agent and 60 to 70 parts of water. Wherein the coating shows excellent adhesive force and wear resistance, the adhesive force reaches grade 0, and the Talbot wear-resistant mass loss is as low as 45 mg.

The invention relates to the technical field of emulsion in water, in particular to a saflufenacil-containing emulsion in water and a preparation method thereof. The saflufenacil suspending agent is prepared from the following raw materials in percentage by mass: 5-30% of saflufenacil, 10-40% of a solvent, 3-5% of an emulsifier, 3-5% of an anti-freezing agent, 0.01-0.1% of a defoaming agent, 0.1-1% of a stabilizer and the balance of water. The water emulsion containing the saflufenacil provided by the invention has good high-temperature storage stability, the decomposition rate of the saflufenacil is less than 5%, and the shelf life of 2 years is met; the dispersing and diluting properties in water with different hardness are good; the anti-flying agent is simply mixed with other dosage form products for use before flying prevention, the barrel mixing compatibility is good, and the abnormal problems of flocculation, layering and the like are not prone to occurring.

The invention discloses a modified methanol fuel for civilian use and a preparation method thereof, comprising the following raw materials in parts by weight: 80-95 parts of methanol, 1-5 parts of modifiers, and 1-20 parts of calorific value agents; wherein the improver comprises the following raw materials in parts by weight: 25-45 parts of n-butanol, 25-45 parts of ethylene glycol, 20-30 parts of methyl oleate, 20-35 parts of dimethoxymethane, 1-8 parts of cyclohexylamine, 0.1-1 parts of NPE‑9, and 0.01-1 parts of toluene triazole; the calorific value agent comprises the following raw materials in parts by weight: 25-50 parts of 1# paint and solvent oil for cleaning, 20-45 parts of naphtha, and 30-60 parts of kerosene. The present invention modifies methanol, solves the problem of low calorific value when industrial methanol is used as fuel, and at the same time, greatly alleviates its corrosion to burners and pipeline systems, making the modified methanol fuel more stable, and no stratification phenomenon will occur when stored for a long time. The preparation method adopted by the invention is easy to operate, has a simple process flow, has low requirements on equipment, is easy to control product quality, and is suitable for large-scale industrial production.

The invention belongs to the technical field of nickel paste materials for MLCC, and discloses high-stability anti-whitening nickel paste for MLCC and a preparation method thereof, the nickel paste is prepared from the following raw materials by weight: 45-55 parts of nickel powder, 5-15 parts of barium titanate powder, 0.2-1.5 parts of a potent anti-whitening auxiliary agent, 0.2-2.5 parts of a dispersant, 30-40 parts of an organic carrier and 5-12 parts of medicinal terpilenol; wherein the particle size of the nickel powder is 100-400 nm, the particle size of the barium titanate powder is 50-100 nm, the powerful anti-whitening auxiliary agent is a titanate coupling agent, and the titanate coupling agent is bis (dioctyloxy pyrophosphate) ethylene titanate; the organic carrier is prepared from resin and a solvent in a mass ratio of (10-20%): (80-90%); wherein the barium titanate powder is pretreated by the following steps: firstly, treating the barium titanate powder by using the powerful anti-whitening auxiliary agent, and then adding a dispersing agent and organic resin for treatment; the nickel powder is pretreated by using the organic carrier and the dispersing agent.

The application relates to a YAG / Yb:YAG / YAG composite laser transparent ceramic and a preparation method thereof. The Yb:YAG water-based ceramic ink comprises mixed powder composed of Al2O3 powder, Y2O3 powder and Yb2O3 powder, the solid content is 20-25 vol%, the mole ratio of Al2O3, Y2O3 and Yb2O3 is 5:3-x:x, and 0 < x <= 0.3; the dispersant content is 0.2-0.8% of the mass of the mixed powder; the pH control agent is used in an amount controlled to adjust the pH of the Yb:YAG water-based ceramic ink to be between 10-11.5 and the pH of the ink is greater than or equal to 9.5 within 24 hours under the conditions of sealing and 20-25 DEG C; the humectant content is 5-20% of the total volume of the Yb:YAG water-based ceramic ink; the binder content is 0.1-0.5% of the mass of the mixed powder; and the sintering aid content is 0.1-0.5% of the mass of the mixed powder.

The invention relates to high-solid-content AlN ceramic slurry for tape casting, a substrate and a preparation method of the substrate, and belongs to the field of ceramic substrates. The ceramic slurry is prepared from the following components in percentage by mass: 60 to 68 weight percent of high-purity AlN powder, 3 to 6 weight percent of dispersing agent, 3 to 5 weight percent of binding agent, 4 to 6 weight percent of plasticizer, 3 to 6 weight percent of sintering aid and 32 to 45 weight percent of solvent, the mass ratio of the plasticizer to the binder ranges from 3: 5 to 4: 5. By regulating and controlling the proportion of the dispersing agent in the AlN ceramic slurry and the solid content of the high-purity AlN powder, the slurry has excellent flowability, dispersity and stability while maintaining high solid content, and is suitable for a tape casting process. The AlN ceramic substrate prepared through sintering is high in density and excellent in heat conductivity, and engineering application can be achieved.

The invention provides a nano-composite anti-seepage coating for goaf sealing and a preparation method and application thereof. The impermeable coating comprises the following components in percentage by mass: 10 to 30 percent of nano silica sol subjected to surface organic modification, 15 to 35 percent of styrene-butadiene latex subjected to pH buffer stabilization, 0.5 to 10 percent of functional nano material subjected to surface activation treatment, 20 to 60 percent of superfine sand and the balance of short fiber, inorganic powder filler and auxiliaries. The method comprises raw material pretreatment; step-by-step gradient blending is performed; and functions are compounded. According to the application, the nano-composite anti-seepage coating is applied to surrounding rock reinforcement, crack plugging or anti-seepage sealing engineering of a coal mine goaf. The slurry has the advantages of being high in deep infiltration capacity, excellent in surface film forming and internal compatibility and stable in performance, an internal infiltration reinforcing layer and a surface sealing layer can be formed at the same time after construction, and an integrated double-layer anti-seepage network is formed.

The invention relates to the technical field of plant growth regulation, in particular to the field of IPC A01N 37, and more particularly relates to a suspending agent containing mepiquat chloride. Prohexadione calcium as well as preparation and application of the suspending agent. The water-soluble suspending agent comprises the following components in percentage by weight: 5-20% of prohexadione calcium, 1-8% of mepiquat chloride, 3-10% of a dispersing agent, 1-6% of a synergist, 4-10% of an anti-freezing agent, 0.5-3% of a thickening agent, 0.5-3% of an auxiliary agent and the balance of reverse osmosis water. The formula product has relatively strong surface wetting power and can keep a good wetting effect, so that the liquid medicine is easy to spread on the surface of a leaf, the loss of the liquid medicine is reduced, and the pesticide effect is exerted; accelerated heat storage test, cold storage test and freeze thawing test show that the formula sample has excellent stability, and each index is basically unchanged before and after heat storage.

The invention provides an eleczyme sustained-release dry suspension, which comprises the following components in percentage by mass: 10% to 30% of eleczyme, 30% to 60% of a sustained-release carrier, 10% to 57% of a filler, 1% to 5% of a suspending agent, 1% to 4% of a pH regulator, 0.2% to 1% of a flavoring agent, and 0.2% to 1% of an aromatic flavoring agent; wherein the sustained-release carrier is selected from one or both of stearic acid and glyceryl monostearate; and the suspending agent is selected from one or more of xanthan gum, hydroxypropyl methylcellulose, sodium carboxymethylcellulose, and sodium alginate. The sustained-release dry suspension has good suspension uniformity after adding water, has no precipitation or stratification problems, has good sustained-release performance, and does not have a pungent taste.

The utility model belongs to the technical field of hot water circulation, and particularly relates to a constant-pressure hot water system large circulation structure which comprises a water tank, a heat conduction partition plate is connected in the water tank, a water pipe is divided into a heating cavity and a heat conduction cavity through the heat conduction partition plate, and a waste heat recovery part is arranged in the water tank and used for recycling heat in the water tank. The heat conduction frame is arranged on the inner side of the water tank and corresponds to the outer side of the heat conduction partition plate, the water pump is installed on the outer side of the water tank, the water pump works to supply an external water source into the heat conduction cavity, and the heat conduction frame is in contact with the heat conduction partition plate in a matched mode. The heat in the water tank can be effectively conducted into the heat conduction cavity, the flow guide groove is designed in a spiral shape, it is guaranteed that an input water source is supplied in a screwed mode, the contact uniformity of the water source and the heat conduction cavity is improved, the cold and hot water layering phenomenon is avoided, auxiliary heating is conducted on the water source through heat circulation, and efficient utilization of waste heat is achieved.

The application provides a preparation method of a food-grade natural wax-based gel emulsion, and the method is as follows: food-grade natural wax, a surfactant and distilled water are heated and mixed, and then high-speed shearing, ultrasonic dispersion, cooling and standing are performed to obtain a food-grade natural wax-based particle dispersion liquid; then the food-grade natural wax-based particle dispersion liquid is mixed and stirred with a food-grade natural wax-based gelation inner oil phase, and then high-speed shearing, ultrasonic dispersion and cooling are performed to obtain the food-grade natural wax-based gel emulsion. The application also provides application of the food-grade natural wax-based gel emulsion prepared above in preparation of special food for people with difficulty in swallowing. The food-grade natural wax is used as the only core functional raw material, and its dual functions of stabilizing the oil-water interface as a solid particle and constructing a three-dimensional network structure as a gelling agent are fully played, the prepared gel emulsion has a semi-solid texture, is easy to spread and deform, has very high safety and practicability, and has a wide application prospect.

The present application relates to a kind of antibacterial and anti-adhesion catheter based on intelligent response nanofiber membrane, which is composed of medical polymer catheter substrate, silane coupling agent transition layer grafted on the outer surface of the substrate and nanofunctional fiber membrane layer formed on the outer surface of the transition layer by electrospinning process, the nanofunctional fiber membrane layer is composed of polyvinyl alcohol loaded hyaluronic acid grafted copper-doped carbon dots (CCDH), CCDH takes copper-doped carbon dots as core, and forms core-shell structure by grafting hyaluronic acid on the surface. The present application solves the problem of easy peeling of catheter coating by chemical bonding, and the formed antibacterial and anti-adhesion catheter has very low water contact angle and friction coefficient, not only effectively blocks the initial adhesion of bacteria at the physical level by constructing hydration layer, but also releases copper ions and carbon dots by enzymatic hydrolysis of hyaluronic acid under bacterial infection microenvironment, induces the production of reactive oxygen species to kill bacteria efficiently, and has broad application prospect in reducing the risk of catheter-related urinary tract infection.

The invention discloses carotenoid composite particles with a low contact angle as well as a raw material composition, a preparation method and application of the carotenoid composite particles. According to the method, the problems that carotenoid is poor in water solubility and easy to degrade are solved, and the use risk of organic reagents is reduced. The composite particles contain 5-20% of carotenoid (such as lutein, beta-carotene and the like), a carrier, an emulsifier, a small molecule filler and an antioxidant. Through multiple times of low-temperature co-grinding, the contact angle is gradually reduced, and it is ensured that the particles have excellent hydrophilicity and stability. According to the process, the production process is simplified, the energy consumption is reduced, the stability of the product during rapid dissolution and dispersion in cold water and high-temperature sterilization is ensured, and the floating oil or layering phenomenon is avoided. And the final product is suitable for various foods and health-care product preparations such as solid beverages, liquid beverages, tablets and the like, as well as skin care products and cosmetic products, is particularly suitable for application scenes needing high-temperature treatment, and provides better stability and safety guarantee.

This invention discloses a nano-haloysite-based electrolyte filling material and its preparation and application methods. The preparation method includes: mixing and grinding nano-haloysite with graphite; mixing the resulting halloysite-graphite mixture with saturated saline solution and polyacrylamide at low and high speeds, adjusting the pH of the resulting mixture to 6.5–7.5, and then subjecting it to ultrasonic treatment to obtain the electrolyte filling material. The electrolyte filling material obtained by this invention is a stable dispersion system. Compared with kaolinite fillers, its stability is significantly improved, and it does not exhibit stratification over a longer application period. The resulting electrode has a more stable potential difference.

The application relates to the field of advanced structural ceramics, and particularly discloses a gel injection molding method for preparing high-performance silicon nitride ceramics and a preparation method thereof. Raw materials include beta-SiN submicron powder 75 parts, YO submicron powder 8 parts, TiC submicron powder 5 parts, AlO superfine powder 5 parts, ZrO submicron powder 2 parts and wollastonite 5 parts in terms of mass ratio, a complex whisker regulator and an entry liquid are used, and ceramics are prepared through gel injection molding, dehydration, degreasing and gas pressure sintering. The grain morphology and interface combination are optimized through the whisker regulator, the slurry dispersion and the green body uniformity are improved through the entry liquid, and the product has a density greater than or equal to 99%, a Vickers hardness greater than or equal to 1700HV and a bending strength greater than or equal to 930MPa through 1700-1850 DEG C. gas pressure sintering, and the product has high density, high hardness, high toughness, wear resistance, corrosion resistance and long service life.

This invention relates to the field of electronic paste preparation technology, and discloses a low sheet resistance tungsten-copper electronic paste and its preparation method, comprising the following steps: Step 1, preparing tungsten-copper composite powder: spherical tungsten powder with a diameter of 1-10 μm and copper powder with a size of 1-3 μm are mixed by mechanical mixing, with a tungsten to copper weight ratio of 3:1-6:1. Before mixing, the copper powder needs to undergo graphene coating pretreatment; Step 2, preparing an inorganic binder: the inorganic binder includes, but is not limited to, the following components: glass powder, CuO, TiO2, La2O3, Pu6O11; Step 3, preparing an organic carrier: the organic carrier includes a solvent, an organic binder, and a thickener; Step 4, preparing the tungsten-copper paste. The tungsten-copper paste of this invention has widely available raw materials, a simple preparation process, and is suitable for mass production. Although graphene, a high-priced material, is added, the amount added is small and the performance is particularly excellent, making the cost of the tungsten-copper paste of this invention far lower than that of similar foreign products, resulting in a very high cost-performance ratio.

The present invention provides an organic-inorganic hybrid polymer hydrogel, a preparation method thereof and an exterior wall thermal insulation mid-coat. The formula of the exterior wall thermal insulation mid-coat no longer uses inorganic silica aerogel and organic film-forming substances (usually polymer acrylic emulsion / resin) alone, but hybridizes the two into an organic-inorganic hybrid dispersion (i.e., the organic-inorganic hybrid polymer hydrogel). When added to the coating, the dispersion effect and production efficiency can be greatly improved, and the problems that may arise from mixing silica aerogel and polymer emulsion / resin in coating production, such as coating agglomeration, excessive viscosity, and post-thickness, etc., are avoided.

The invention relates to the technical field of chopped strand mat processing, and discloses an inorganic fiber chopped strand mat and a preparation method thereof.The inorganic fiber chopped strand mat comprises a framework fiber web and fixing fiber webs covering the upper surface and the lower surface of the framework fiber web, and the framework fiber web and the fixing fiber webs are fixed into a mat through spunlace; the framework fiber web is formed by carding framework fibers or freely dispersing the framework fibers to form a web, the fixed fiber web is formed by carding fixed fibers, the framework fibers are inorganic fibers, and the fixed fibers comprise synthetic fibers and inorganic fibers. The problems that existing inorganic fiber chopped strand mat production is high in production cost, fibers are prone to falling and layering, and the environment is prone to being polluted when the fibers are used are solved.

The present application belongs to the technical field of material chemistry and environmental governance, and discloses a plant decomposition type deodorant formula and a configuration method. In view of the defects of the existing deodorization technology, such as secondary pollution, slow effect, only masking odor, insufficient product stability and the like, the present application uses tea polyphenol extract, yucca extract, grape seed extract, various plant essential oils and other pure natural plant extracts as raw materials, does not contain chemical synthetic additives, and is prepared through a standardized process of precise control of constant temperature environment, grading stirring speed, step-by-step feeding and reaction time. The deodorant can target decomposition of various foul-smelling molecules, has the effects of bacteriostasis and oxidation resistance, is completely deodorized, has strong product stability, is safe and non-irritating, has no secondary pollution, and can be widely applied to foul odor treatment in multiple scenes such as livestock breeding, garbage treatment, sewage treatment, public environment and the like.

The invention discloses a herbaceous plant hyaluronic acid pet ear washing liquid and a preparation method thereof, and belongs to the technical field of pet cleaning care agents, the preparation method comprises the following steps: preparing a stabilizer, preparing a dispersing agent, preparing a first extracting solution, preparing a second extracting solution, and mixing; the step of mixing comprises the following steps: mixing the first extracting solution, the second extracting solution, sodium hyaluronate, hydrolyzed hyaluronic acid and a dispersing agent, and performing high-pressure homogenization to obtain the herbaceous plant hyaluronic acid pet ear washing liquid. The herbaceous plant hyaluronic acid pet ear washing liquid prepared by the invention has the effects of cleaning, sterilizing, moisturizing and repairing, and is strong in cleaning power, long in shelf life and good in stability.

This invention discloses an aqueous phase preparation tank for emulsion explosives, comprising a mixing tank and a recovery tank. The mixing tank has a lid, and a gas pipe is vertically inserted into the lid. Several identical aeration heads are installed on the gas pipe inside the mixing tank. An inlet pipe and an outlet pipe are installed at the upper and lower ends of the mixing tank, respectively. A conduit is connected to the lid, and the outlet end of the conduit is connected to the recovery tank and extends into its lower interior. A second liquid outlet pipe is vertically installed inside the recovery tank. A pressure gauge is installed on the lid. Gas valves are installed on both the connecting pipe and the conduit. This invention relates to the field of aqueous phase preparation technology. Steam with a certain pressure and temperature is introduced into the mixing tank using a pump, a gas pipe, and several aeration heads. The steam's turbulence and foaming action stirs, mixes, and heats the materials in the mixing tank, resulting in uniform mixing in all parts.

The invention relates to YAG / Yb: YAG / YAG composite laser transparent ceramic and a preparation method thereof. Wherein the adopted Yb: YAG water-based ceramic ink comprises mixed powder composed of Al2O3 powder, Y2O3 powder and Yb2O3 powder, the solid content is 20-25 vol%, and the molar ratio of Al2O3 to Y2O3 to Yb2O3 is 5: (3-x): x, 0lt; x is smaller than or equal to 0.3; the content of the dispersing agent is 0.2-0.8% of the mass of the mixed powder; the dosage of the pH control agent is controlled to adjust the pH of the Yb: YAG water-based ceramic ink to be 10-11.5, and the pH of the ink is greater than or equal to 9.5 within 24 hours under the conditions of sealing and 20-25 DEG C; the content of the humectant is 5-20% of the total volume of the Yb: YAG water-based ceramic ink; the content of the binder is 0.1-0.5% of the mass of the mixed powder; and the content of the sintering aid is 0.1-0.5% of the mass of the mixed powder.

According to the preparation method of the high-altitude water for icing wind tunnel simulation, tetrahydrofuran and matrix water are mixed according to the mass ratio of 0%-20%, and the low-icing-temperature high-altitude simulation water for icing wind tunnel simulation is obtained. The tetrahydrofuran is added to introduce a hydrogen bond acceptor into the deionized water, so that the purity of the deionized water is not influenced, the icing temperature of the water can be regulated in a wide range, the supercooled icing temperature effect of the high-altitude ultrapure water is achieved, and the prepared icing wind tunnel high-altitude simulation water has the advantages of stable physical form, no layering and the like, and has a wide application prospect. The preparation process has the characteristics of simplicity in operation, high practicability and the like. The problem that the supercooling state of high-altitude high-purity water cannot be simulated on the ground is solved, and a solution is provided for simulating high-altitude water in an ice wind tunnel and preparing supercooled ultrapure water on the ground.

The invention relates to the technical field of tildipirosin suspension injections, in particular to a tildipirosin suspension injection, which comprises the following components by weight: 10-15 g of tildipirosin, 30-40 ml of a solubilizer, 4-5 g of a stabilizer, 3 g of a dispersant, a proper amount of a pH regulator, and the balance of sterile water to 100 ml. The solubilizer comprises polyethylene glycol and glycerol; the stabilizer comprises gelatin and polyvinylpyrrolidone; the dispersing agent is prepared from poloxamer 188 and polysorbate 80; the pH regulator comprises sodium citrate and a phosphate buffer solution. The particle size of the medicine particles is controlled to be 200 nm or below, the absorption speed of the medicine is remarkably increased, and it is ensured that the medicine effect is rapidly exerted. According to the multiphase blending technology, through solubilizer micro-emulsification and medicine blending, agglomeration of medicine particles is avoided, and it is ensured that the medicine is evenly distributed in a suspension. Compared with traditional mechanical stirring, the ultrahigh-pressure homogenizing technology is introduced, medicine particles are further refined and dispersed, and stability is enhanced.

The invention relates to the technical field of hydrogen storage alloy storage tank processing, and discloses an anti-corrosion coating spraying device for a hydrogen storage alloy storage tank, which solves the problem that the anti-corrosion coating is inconvenient to spray on the surface of the storage tank at present, and comprises a spraying box, and a limiting mechanism and a supporting mechanism are arranged in the spraying box; a spraying mechanism is arranged on the spraying box, a top groove is formed in the top of the spraying box, and the spraying mechanism comprises two first U-shaped round rods symmetrically fixed to the top of the spraying box; according to the spraying device, through cooperation of a top disc and a first movable rod and cooperation of a translation plate and a first U-shaped round rod, horizontal reciprocating motion of a material barrel and a spraying pipe is facilitated, and therefore uniform spraying on the surface of the storage tank is facilitated; and the charging barrel can conveniently drive the stirring rod to rotate to stir the anticorrosive paint in the moving process, so that the anticorrosive paint can be conveniently stirred to ensure uniform component distribution and no precipitation or layering phenomenon.

The invention relates to the technical field of building materials, and discloses an ultraviolet crosslinking water-based roof exposed waterproof coating as well as preparation and application thereof. The waterproof coating comprises the following components in parts by weight: 1-5 parts of a multifunctional additive, 5-10 parts of an ammonium salt dispersing agent, 5-10 parts of a coalescing agent, 2-6 parts of a base material wetting agent, 1-5 parts of a mineral oil defoaming agent, 1-5 parts of an organic silicon defoaming agent, 1-5 parts of an alkali swelling thickening agent, 1-5 parts of a polyurethane thickening agent, 300-400 parts of coarse heavy calcium carbonate powder, 50-150 parts of fine heavy calcium carbonate powder, 1-20 parts of titanium dioxide, 350-450 parts of an acrylic elastic emulsion and 80-120 parts of a styrene-acrylic emulsion. 55 to 125 parts of deionized water; the solid content of the acrylic elastic emulsion is 52 + / -1%, the viscosity is smaller than or equal to 500 mPa.s, the glass transition temperature is-18 DEG C, the minimum film forming temperature is 0 DEG C, and the density is 1.04 g / cm < 3 >. The waterproof coating disclosed by the invention has excellent bonding strength, self-leveling performance, water-spilling resistance and flexibility, has long-acting waterproof and weather-resistant performance, and meets outdoor application requirements.

The invention discloses a foam sandwich structure composite airfoil and a forming method thereof, and belongs to the technical field of composite design and forming. In order to solve the problems that in the forming process of a traditional composite airfoil, the foam unloading forming pressure is insufficient, volatile matter cannot be discharged and the like, a mold pressing co-curing forming process is mainly adopted, and a glue flowing hole with a specific structure is designed in a foam core material so as to optimize resin fluidity and gas emission. The overall quality of the composite airfoil can be effectively improved, the defects of lack of glue, bubbles, layering and the like are avoided, and uniform distribution of resin in the curing process is ensured, so that the compactness, uniformity and structural stability of the composite are improved, and the resistance performance and durability of a product are enhanced.

This invention relates to the field of biofertilizer technology, specifically disclosing a microalgae biofertilizer with soil remediation function and its preparation method. The preparation method includes: domesticating and culturing *Scenedesmus obliquus* liquid, *Cyanobacterium cyanobacteria* liquid, and *Monoflagellates* liquid with γ-aminobutyric acid-induced activation solution, and co-culturing them with *Bacillus polymyxa* and *Bacillus megaterium* to obtain a bioslurry; encapsulating the bioslurry with sodium alginate-carboxymethyl chitosan to obtain bioactive microspheres; impregnating corn straw with magnesium-iron salt precursors and pyrolyzing it under nitrogen to obtain modified biochar loaded with magnesium oxide and iron oxide, and compounding it with potassium humate to obtain a biochar suspension; and mixing the bioactive microspheres, biochar suspension, xanthan gum, zeolite, ammonium polyphosphate, potassium nitrate, zinc sulfate, potassium silicate, and deionized water evenly to obtain the microalgae biofertilizer with soil remediation function.

The application provides a rock asphalt modified asphalt based on a wet activation process and a preparation method thereof, and relates to the field of asphalt.The rock asphalt modified asphalt comprises the following raw materials in parts by weight: 82-90 parts of base asphalt, 9-17 parts of pretreated buton rock asphalt and 0.3-1.2 parts of a composite activation additive; the composite activation additive is composed of oleic acid amide and terpene resin in a mass ratio of 2.5-3.5:0.8-1.2; the modified asphalt is prepared by using the wet activation process.The modified asphalt prepared by the application has low cost and high performance, can be better applied in road engineering, can realize high-temperature anti-rutting and low-temperature anti-cracking high-quality road performance, and can also achieve a low cost.