112results about How to "Uniform system" patented technology

The invention relates to an amino-protected crosslinking magnetic chitosan composite adsorbent and a preparation method of the amino-protected crosslinking magnetic chitosan composite adsorbent. The preparation method comprises the following steps: enabling formaldehyde and amino on the chitosan to react to generate Schiff's base protected amino; crosslinking by using epichlorohydrin; and finally, carrying out acidolysis to remove the Schiff's base to recover the amino to obtain the amino-protected crosslinking magnetic chitosan composite adsorbent. The amino-protected crosslinking magnetic chitosan composite adsorbent comprises a magnetic chitosan and probably comprises a high molecular compound and / or an inorganic material. The amino-protected crosslinking magnetic chitosan composite adsorbent has the characteristics that the preparation process of the composite adsorbent is simpler, and the process parameters are easy to control; the adsorption capacity and the adsorption speed of the composite adsorbent are large and high, and the composite adsorbent can be recovered through an external magnetic field, so the reusability of the composite adsorbent is good. The composite adsorbent can be hopefully used for treating waste water containing heavy metal ions, protein and dye.

The invention relates to the manufacturing field of nano composite emulsion materials, in particular to graft nano zinc oxide / polyacrylate composite emulsion and a manufacturing method thereof. Firstly an initiator azobisisovaleric acid is anchored on the surface of nano zinc oxide particles, two portions of hexadecane are added to 100 portions of mixed monomers, and 5 portions of nano ZnO particles anchoring the azo initiator are added and ultrasonically oscillated for 20 minutes to form an oil phase pre-dispersion solution. The pre-dispersion solution is added to an emulsifier aqueous solution and dispersed by a high-shear dispersion homogenizer at high speed for 30 minutes to form a mini-emulsion. The mini-emulsion is transferred to a reactor, heated to the temperature of 75 DEG C, with polyreaction initiated for 3 hours, and then heated to the temperature of 85 DEG C, polymerized for 2 hours, cooled to room temperature and discharged. The invention solves the problems of high cost and poor stability of the nano composite emulsion prepared by coupling agents, and low encapsulation efficiency and graft ratio of nano polymer composite particles. The composite emulsion has the advantages of simple preparation process, low cost, even particle size, good performance, high encapsulation efficiency and graft ratio of the nano-particles, forms nano monodisperse state in the polymer, and is suitable for the fields of coating materials, leather finishing materials, adhesives and functional plastics.

The invention discloses a PAC-PDMDAAC compound coagulant, a corresponding preparation method and an application method. The PAC-PDMDAAC compound coagulant is prepared as the following steps: the PAC dry powder or solution is arranged in a mixing reactor, and water is added to obtain a PAC solution which is stirred under normal temperature and a PDMDAAC colloid is added into the solution; the mixed solution is stirred under normal temperature till the PDMDAAC colloid is completely dissolved to obtain a stable PAC-PDMDAAC. The application of the PAC-PDMDAAC compound coagulant is to adopt the PAC-PDMDAAC compound coagulant for the coagulation treatment to raw water and waste water and sewage and the dehydration treatment to sludge or silt directly or after dilution with water by any proportion. The component structure and content scope of the invention are distinct to guarantee the capability and stability of the obtained PAC-PDMDAAC compound coagulant, and the materials on industrial manufacturing are available. The various functions of the PAC-PDMDAAC compound coagulant can be adjusted during water treatment with high adaptability so as to reduce cost, reinforce coagulation effect and dramatically enhance the quality of obtained water.

The invention discloses a PFS-PDMDAAC compound coagulant, a corresponding preparation method and an application method. The PFS-PDMDAAC compound coagulant is prepared as the following steps: the PFS dry powder or solution is arranged in a mixing reactor, and water is added to obtain a ferric-salt PFS solution which is stirred under normal temperature and a PDMDAAC colloid is added into the solution; the mixed solution is stirred under normal temperature till the PDMDAAC colloid is completely dissolved to obtain a stable PFS-PDMDAAC. The application of the PFS-PDMDAAC compound coagulant is to adopt the PFS-PDMDAAC compound coagulant for the coagulation treatment to raw water and waste water and sewage and the dehydration treatment to sludge or silt directly or after dilution with water by any proportion. The component structure and content scope of the invention are distinct to guarantee the capability and stability of the obtained PFS-PDMDAAC compound coagulant, and the materials on industrial manufacturing are available. The various functions of the PFS-PDMDAAC compound coagulant can be adjusted during water treatment with high adaptability so as to reduce cost, reinforce coagulation effect and dramatically enhance the quality of obtained water.

The invention discloses a method for preparing a titanium dioxide pigment with high-temperature resistance. The method comprises that: blending a primary titanium dioxide product into slurry by using distilled water or deionized water; regulating the slurry with pH value from 8 to 11 by using an alkaline solution; adding a dispersant, then performing a sand milling and filtering; heating the filtered slurry to the temperature of 50 DEG C to 75 DEG C and keeping the temperature unchanged in the whole process of coating; adding a sodium silicate aqueous solution, adding an acid solution for regulating the slurry with pH value of 8 to 11 and keeping the pH value unchanged; adding the acid solution to regulate the pH value of 2 to 7, then slaking; adding an aluminum salt aqueous solution, cocurrenting the acid solution or the alkaline solution for keeping the pH value unchanged, uniformly stirring after dropping; adding the alkaline solution to regulate the pH value of 6 to 8, then filtering, washing and drying after stirring, crushing by air flow and performing an organically treatment. According to the invention, the titanium dioxide pigment has the advantages of high temperature tolerance, good whiteness and good dispersibility. The method for preparing the titanium dioxide pigment with high-temperature resistance of the present invention has the advantages of good controllability, strong operability, low energy consumption and easy industrialization.

A fuel delivery system for a turbine engine has at least one fuel injector having an upstream orifice arrangement that produces a first pressure drop of flowing fuel and a downstream orifice arrangement that produces a second pressure drop of the flowing fuel. The upstream orifice arrangement or the downstream orifice arrangement includes a noncylindrical orifice.

The invention provides oxidation resistant dimethyl silicon oil based magnetic fluid and a preparation method thereof; the dimethyl silicon oil based magnetic fluid is prepared by nano-magnetic particles, a surface modifier and carrier fluid, and the carrier fluid is the dimethyl silicon oil. The preparation method of the dimethyl silicon oil based magnetic fluid comprises the following steps: preparing the nano-magnetic particles; treating the nano-magnetic particles in an activated way; preparing the nano-magnetic particles which are modified by the surface modifier; adding the modified nano-magnetic particles which are purified into methylene dichloride, dispersing and filtering the mixture to obtain the methylene dichloride based magnetic fluid; adding the magnetic fluid into the dimethyl silicon oil to be stirred and dispersed, heating the mixture and maintaining the temperature between 50 and 90 DEG C, separating and precipitating the mixture to obtain the dimethyl silicon oil based magnetic fluid. The dimethyl silicon oil based magnetic fluid in the invention has the advantages of high stability, low temperature resistance and high temperature resistance. The preparation method is simple, high in efficiency and low in requirement on equipments, thus being easy to be applied in various fields and having wide application prospect.

The invention provides a fermented soymilk beverage. In terms of a total weight of 100 weight parts, the fermented soymilk beverage comprises the following raw materials: 3-10 parts by weight of soybean, 0.5-15 parts by weight of white granulated sugar, 3.0-9.0 parts by weight of reducing sugar, 0.21-0.65 parts by weight of a thickening agent and 0-0.20 parts by weight of an acidity regulator. The fermented soymilk beverage is prepared by soybean slurry grinding, batching, browning and fermentation. The thickening agent includes pectin, arabic gum and gellan gum, and is added after fermentation. The invention also provides a preparation method of the fermented soymilk beverage. The fermented soymilk beverage product system provided by the invention is uniform, and almost has no floating, precipitation or stratification phenomenon when it is placed at room temperature.

The invention relates to a chip-level bottom filling adhesive, which comprises following components by weight percentage: 15 to 50 percent of epoxy resin, 1 to 20 percent of toughening agent, 0.1 to 1 percent of dispersing agent, 0.01 to 1 percent of defoaming agent, 0.8 to 10 percent of cross-linking agent, 0.1 to 0.5 percent of pigment, 40 to 70 percent of filler, 3 to 30 percent of curing agent and 1 to 20 percent of diluting agent. A preparation method of the chip-level bottom filling adhesive comprises the steps that the epoxy resin, toughened resin, the dispersing agent, the defoaming agent, the cross-linking agent and the pigment are weighed according to the proportion, thrown into reaction kettle and mixed to form a homogeneous solution; and afterwards, the filler, the curing agent and the diluting agent are weighed according to the proportion, thrown into the reaction kettle in sequence and evenly mixed with the homogeneous solution, and then the chip-level bottom filling adhesive is obtained. The bottom filling adhesive prepared by adopting the method has the characteristics of low curing shrinkage rate, high reliability, and the like, simultaneously satisfies the requirement of low radioactivity and is suitable for primary high-density packaging of memory chips.

The invention relates to a method for processing instant coarse cereal balanced nutritional flour, which comprises the following steps of: (1) mixing 25 to 30 percent of buckwheat flour, 10 to 15 percent of fagopyrum tataricum flour, 8 to 12 percent of hulless oat flour, 15 to 20 percent of hyacinth bean flour and 30 to 35 percent of pea flour to obtain mixed flour; (2) adding water into the mixed flour and blending to form flour paste, adding solution of CaCl2 to ensure that the pH value of the flour paste is between 6.0 and 6.5, adding 140 to 160u of intermediate-temperature alpha-amylase into each gram of mixed flour, and liquefying at the temperature of between 60 and 65 DEG C to obtain liquefied flour milk; and (3) decoloring the liquefied flour milk, seasoning, and spray-drying to obtain a finished product. The method is simple, easy to operate and master, low in production cost and environment-friendly, the obtained product has high instant and blending performance, is convenient to eat, has an adjuvant therapy effect on senile diseases such as hypertension, hyperlipaemia, cardiovascular and cerebrovascular diseases, diabetes, obesity and the like, and has better effects of dietetic therapy and health care than rice and wheat flour.

The invention relates to an additive of fuel, in particular to an additive of high-proportion methanol gasoline, such as M50 methanol gasoline. The additive is characterized in that the additive in the total volume ranging from 2% to 5% is added into the methanol gasoline and consists of 60% to 70% of mutual solvent formed by compounding alcohols, alcohol ethers, esters and acetones according to optional proportion, 24.4% to 30% of ignition agent formed by compounding fatty hydrocarbons, aromatic hydrocarbons and methyl tertiary butyl ether according to optional proportion, 4% to 6% of combustion improver formed by compounding nitryls and nitrate esters according to optional proportion, 1% to 3% of corrosion inhibitor formed by compounding phenols and grease according to optional proportion, and catalyst and anti-oxidant stabilizer in proper quantity. By the aid of the additive, the service life of a gasoline tank can be prolonged evidently, methyl alcohol system of the gasoline can be effectively guaranteed against being deteriorated and layered easily, and the problems of poor startability and power performance and the like can be solved effectively. The additive is rich in raw material sources, simple in production process and procedures and convenient in use and popularization.

The invention relates to an activated rubber particle, a preparation method and an application thereof, wherein the particle comprises the following components in parts by weight: 100 parts of car tire rubber powder, 10-40 parts of petroleum resin, 0.5-1 parts of activator and 0.5-3 parts of compatibilizer; above raw materials are extruded by a double-screw extruder and moulded to obtain a product that is the activated rubber particle. By adding the product to asphalt, shearing and stirring to disperse uniformly, property of the asphalt can be improved, and petroleum asphalt can be replaced partly. Compared with the prior art, the activated rubber particle not only ensures the waste car tire to improve the property of the modified asphalt, but also has low cost and simple using process, thereby realizing high efficient utilization of the waste resources.

The invention discloses a leaking stoppage reinforcing agent which comprises the following components in parts by weight: 2-8 parts of urea resin, 1-5 parts of phenolic resin, 8-15 parts of slag, 1-5 parts of calcium sulfate, 5-8 parts of aluminum oxide, 3-6 parts of calcium chloride, 10-20 parts of calcium carbonate, 10-20 parts of silicon oxide, 0.1-0.4 part of polyanionic cellulose PAC-LV and 0.1-0.4 part of sodium carboxymethylcellulose CMC-LV. The leaking stoppage reinforcing agent is prepared by the steps of sequentially adding the components in parts by weight into a reaction kettle according to a conventional preparation method at 30-50 DEG C under normal pressure, stirring and mixing for 6-8 hours, subsequently adding the components into a kneading machine, uniformly mixing and stirring, drying, and crushing into a powder product with the particle size of 0.01-0.5mm. The leaking stoppage reinforcing agent has a remarkable leaking stoppage and reinforcing effect, is temperature resisting, good in stability and coagulability, high in structural stoppage capability and good in compatibility, can be thickened without solidification, is controllable in reinforcing time, wide in application range, safe in construction and free of toxicity or pollution, can be widely applied to petroleum and geological drilling process, and is particularly applicable to leaking stoppage construction in large cracks, large karst caves, underground rivers, severe deficit earth layers and crushed earth layers.

The invention discloses a normal temperature repair asphalt solution additive and a preparation method thereof. The additive comprises the following components by mass percentage: 30%-35% of asphalt, 10%-15% a softener, 5%-10% of diesel, 5%-10% of a polymer, 0.25%-0.5% of sulphur, and 29.5%-49.75% of a viscosity reducer. Through simple blending of the additive provided by the invention and pavement petroleum asphalt, a high performance normal temperature repair asphalt solution can be prepared. The mixed normal temperature repair mixture has performance fully meeting relevant specification requirements, is applicable to the environment temperature, can truly achieve all-weather repair, and practical application proves that the performance is excellent.

The invention discloses a preparation method of genipin cross-linked quercetin-zein / pectin / chitosan nano-particles, and belongs to the technical field of foods.The method comprises the steps that quercetin and zein are dissolved in an ethanol water solution, pectin and chitosan are dissolved in ultrapure water and an acetic acid water solution respectively, stirring is carried out, and the genipin cross-linked quercetin-zein / pectin / chitosan nano-particles are obtained; the preparation method comprises the following steps: preparing quercetin-zein nano-particles by an anti-solvent precipitation method, and sequentially attaching pectin and chitosan to the surfaces of the quercetin-zein nano-particles by a layer-by-layer electrostatic deposition method to form a coating, thereby obtaining the quercetin-zein / pectin / chitosan nano-particles. And further adding genipin as a cross-linking agent to finally obtain the genipin cross-linked quercetin-zein / pectin / chitosan nanoparticles. In the prepared composite nanoparticles, the bioavailability of quercetin is improved from 16.1% to 82.7%, and the nanoparticles can keep good stability after being stored at 4 DEG C for 15 days.

The invention discloses a release agent used for an aluminum alloy part die-casting die and a preparation method thereof. The release agent comprises modified bamboo charcoal, sodium alginate, beewax, graphene, triethanolamine, talcum powder and organic solvents, wherein the modified bamboo charcoal is obtained by soaking bamboo charcoal in a hydrochloric acid solution and then filtering the hydrochloric acid solution. The release agent can be stored and used for a long time; meanwhile, the preparation method of the release agent is simple in step, and the raw materials are easy to obtain.

The invention discloses a polyaluminum sulfate-branched poly (dimethyl diallyl ammonium chloride) composite coagulant and a preparation method and an application method thereof. The preparation method comprises the following steps: the step 1: aluminum sulfate (AS) dry powders or liquids, which meet the requirements for national chemical industry standards, are loaded to a mixing reactor, water is added to make an aluminum sulfate (AS) solution, the aluminum sulfate (AS) solution is stirred while an alkali or an alkaline earth metal compound or an active aluminum hydroxide is added dropwise to allow a polymerization reaction, the pH value or the alkalization degree is controlled, the materials are not added when the pH value exceeds a preset value, the insoluble substances are filtered off after the reaction carries out for a certain time period, and a transparent polyaluminum sulfate (PAS) solution is prepared; the step 2: the polyaluminum sulfate (PAS) solution is loaded to another mixing reactor, and branched poly(dimethyl diallyl ammonium chloride) (PDMDAAC) colloids or dry powders are added at a room temperature or under a heating condition; and the step 3: the mixed liquid is stirred under room temperature until branched PDMDAAC colloids are thoroughly dissolved, so as to obtain the final product. The final product of polyaluminum sulfate-branched poly (dimethyl diallyl ammonium chloride) composite coagulant is applied to the flocculation treatment of waste water and sewage.

The invention discloses a composite health-care beverage and a processing technology thereof. The composite health-care beverage has a unique local flavor, is rich in nutrients and has health care functions. The processing technology utilizes tomato, orange and celery as raw materials. The composite health-care beverage is prepared from 10 to 20wt% of a celery juice, 10 to 30wt% of a tomato juice, 20 to 30wt% of an orange juice, 1 to 5wt% of cane sugar, 0.1 to 0.3wt% of agar and 0.1 to 0.2wt% of sodium carboxymethylcellulose. The processing technology comprises the steps of raw material selection, cleaning, crushing, juicing, filtration, colloid grinding, blending, homogenization, degassing, disinfection and loading.

The invention provides a preparation method for a positive electrode material of a lithium ion battery. A complexing agent is added to a lithium source solution firstly; the pH of the lithium source solution is adjusted to 5-7 to obtain lithium salt sol; a positive electrode material precursor is added to the lithium salt sol to be mixed to obtain paste; the solution is evaporated while stirring and heating to obtain dried gel; and the dried gel is calcined to obtain the positive electrode material of the lithium ion battery. According to the preparation method, the contact area between the lithium salt sol and the positive electrode material precursor is large, so that the uniform mixing between the lithium salt sol and the positive electrode material precursor can be facilitated; the rapid implementation of the reaction can be promoted in the high-temperature roasting process, so that the cost is saved; the prepared positive electrode material elements are uniform in distribution; and a more excellent electrochemical performance of the positive electrode material is realized.

The invention discloses an air-pressure-adjustable bacteriological incubator which comprises an incubator body. A lower swinging tray and an upper swinging tray are movably mounted in the incubator body, fixing grooves are formed in the upper swinging tray and the lower swinging tray, the upper swinging tray is connected with the lower swinging tray through a linkage rod, an air pressure adjusting cavity is formed in the side wall of the incubator body, the side wall of the air pressure adjusting cavity is communicated with the inside of the incubator body through a through hole, a piston is assembled in the air pressure adjusting cavity, a piston rod is connected on the piston, and one end of the piston rod penetrates the top surface of the air pressure adjusting cavity and is connected with a linear driving mechanism arranged on the side surface of the air pressure adjusting cavity. According to the bacteriological incubator, the air pressure in the incubator can be adjusted within a certain ranges according to practical experiment requirements by the aid of the air pressure adjusting cavity, so that relationships between the air pressure and bacterium growth are conveniently researched. According to the bacteriological incubator, carbon dioxide, nitrogen, oxygen, temperature and humidity can be adjusted, so that experimental research can be performed under multi-parameter conditions.

The present invention is one kind of metal-polyurethane-metal sandwich plate and its making process. The sandwich plate has one core layer of dense polyurethane elastomer, which is produced with polyol and isocyanate in the weight ratio of 100 to 50-90, and through mixing at 20-40 deg.c, pouring, and curing at room temperature. Two metal surface layers are then adhered firmly to the core layer to form the metal-polyurethane-metal sandwich plate. The technological process with room temperature curing may be completed in site, so that the present invention has wide application range in serving as structural material for ship, bridge, high rise building, etc.

The invention belongs to the field of preparation of high-performance high polymer materials, and relates to a preparation method of a novel composite adhesive product, particularly a method for preparing a phenol aldehyde composite adhesive from an ionic liquid and a phenol aldehyde resin prepolymer by in-situ blending. The preparation method comprises the following steps: firstly synthesizing a phenol aldehyde resin prepolymer from raw materials phenol and formaldehyde in the presence of an alkali catalyst; by using an imidazole polyether ionic liquid with characteristic group as a modifier, heating, stirring under reflux, carrying out stage heating and temperature control, dehydrating under reduced pressure and the like to obtain the phenol aldehyde composite adhesive containing the imidazole polyether ionic liquid structure; and adding ethanol to regulate the viscosity of the composite adhesive to obtain the alcohol-soluble phenol aldehyde composite adhesive with acceptable viscosity. The method can further enhance the binding property and curing property of the phenol aldehyde adhesive, lower the free aldehyde content, and effectively solve the problems of low heat stability, deep color, high cracking tendency and the like in the phenol aldehyde adhesive.

The invention discloses a preparation method for stably suspended and dispersed nano-zinc oxide slurry, and relates to the technical field of semiconductor material production. The method comprises the steps of firstly, adding nano-zinc oxide in a process of preparing calcium carbonate by adopting a gas-solid reaction, and obtaining monodisperse nano-zinc oxide loaded to the surface of calcium carbonate of a submicrometer structure after calcium carbonate is completely generated; and secondly, taking attapulgite clay as anti-settling, thixotropic and thickening agents, and performing sanding to obtain a target product. According to the method, a nano-zinc oxide dispersion modification technology is successfully formed, and the stably suspended and dispersed nano-zinc oxide slurry is further prepared, so that the difficult problem of aggregation of nano-zinc oxide in use is radically solved.

The invention provides a corrosion and scale inhibitor for an organic-alcohol cold carrying system and a preparation method thereof. The corrosion and scale inhibitor comprises the chemical components in percent by weight: 6.6%-19.0% of sodium molybdate, 6.6%-19.0% of sodium gluconate, 3.3%-9.5% of sodium citrate, 2.0%-4.8% of sodium hydroxide, 0.8%-2.4% of polyethylene glycol, 2.5%-6.0% of polyepoxysuccinic acid, 2.5-6.0% of dodecyl dimethyl benzyl ammonium chloride, 1.3-2.4% of sodium lactate and the balance of deionized water. The preparation method comprises the following steps: according to the mass ratio, firstly dissolving the sodium molybdate, the sodium gluconate, the sodium citrate and the sodium hydroxide in the deionized water completely to obtain a solution I; dissolving the polyethylene glycol, the polyepoxysuccinic acid, the dodecyl dimethyl benzyl ammonium chloride and the sodium lactate in the deionized water completely to obtain a solution II; and uniformly mixing the solution I and the solution II to obtain the organic-alcohol cold carrying system.

The invention discloses a bottom filling adhesive having good compatibility with scaling powder and a preparation method thereof. The bottom filling adhesive is compounded by, by weight, 5-25 parts of self-synthesized compatible resin, 20-50 parts of epoxy resin, 5-20 parts of thinner, 1-3 parts of coupling agent, 0.1-1 part of dispersant, 35-50 parts of filler and 5-30 parts of curing agent, wherein the self-synthesized compatible resin is compounded by, by weight, 500-700 parts of dimer acid, 140-360 parts of hydroxyl-terminated toughened resin, 1-8 parts of methyl benzenesulfonic acid, 90-190 parts of low-viscosity bifunctional epoxy resin and 0.2-3.0 parts of triphenyl phosphine. Compared with the prior art, the compatibility with scaling powder of the bottom filling adhesive is excellent, the defects formed in the flowing and curing process are decreased, the flowing speed and the curing speed are high, the bottom filling adhesive meets the requirement for high density packaging, an expansion coefficient is small, and the reliability of packaging components is effectively guaranteed.

A system, method and computer program product are provided for performance management. A member within an entity is selected and a performance assessment of the member is conducted. The information collected from the performance assessment is stored in a database. A self-assessment by the member is conducted and the information from the self-assessment is also stored in the database. An appraisal of the member is conducted using the data from both the performance assessment and the self-assessment and the information obtained from the appraisal is stored.

The invention discloses a high-storability release agent and a preparation method thereof. The high-storability release agent is prepared from modified vermiculite, sodium alginate, soy wax, dibutyltin dilaurate, nonyl phenol ethoxylate, aluminum oxide and organic solvent, wherein the modified vermiculite is obtained by soaking calcined vermiculite in a hydrochloric acid solution and then filtering the mixture. The release agent can be stored and used for a long time, meanwhile, steps of the preparation method of the release agent are simple, and the raw materials are easy to get.

The invention relates to a pesticide emulsion water preparation method, and emulsion water prepared based on the method, and applications thereof. The preparation method comprises: (1) preparing a dispersed oil phase and a continuous water phase; and (2) treating the dispersed oil phase and the continuous water phase in a micro-reaction system to obtain oil-in-water emulsion water. The invention further relates to applications of the pesticide emulsion water in prevention and treatment of diseases, insect pests and weeds in crop protection. According to the invention, the pesticide emulsion water with good stability is prepared by selecting the micro-reaction technology.

The invention discloses a polyaluminium chloride-aluminum sulfate-poly dimethyl diallyl ammonium chloride ternary composite coagulant as well as preparation and application methods thereof. The preparation and application methods comprise the steps of: putting PAC (Poly Aluminium Chloride) dry powder or solution in a mixing reactor, adding water for blending to obtain a PAC solution, stirring the PAC solution, adding AS (Aluminum Sulfate) dry powder or solution, adding water for dissolving under stirring, further dropping alkali or alkaline earth metal compound to control basicity to obtain a binary mixed solution containing the PAC and the AS; stirring the binary mixed solution, adding PDMDAAC (poly dimethyl diallyl ammonium chloride) colloid or dry powder, stirring until the PDMDAAC colloid is completely dissolved to obtain a stable PAC-AS-PDMDAAC ternary compound coagulant, wherein the contents of the PAC and the AS are metered in the terms of the mass percent of the Al2O3; and diluting the ternary compound coagulant with water or directly putting the ternary compound coagulant to be used for coagulating raw materials, flocculating wastewater and sewage and dewatering sludge. The ternary compound coagulant is directly put (or diluted) according to the putting amount requirement in a single chemical agent form for strengthening and coagulating various kinds of raw water, flocculating the wastewater and the sewage and dewatering the sludge.

The invention discloses a release agent used for an aluminum alloy part die-casting die and a preparation method thereof. The release agent comprises modified fly ash, sodium alginate, sunflower seed wax, graphene, butyl acrylate, talcum powder and organic solvents, wherein the modified fly ash is obtained by soaking fly ash in a hydrochloric acid solution and then filtering the hydrochloric acid solution. The release agent can be stored and used for a long time; meanwhile, the preparation method of the release agent is simple in step, and the raw materials are easy to obtain.