558 results about "Polyaspartic acid" patented technology

The invention belongs to the field of agricultural chemistry and bio-fertilizer, and discloses a fertilizer synergist based on polyaspartic acid, alginate oligosaccharide and mannan oligosaccharide and a preparation method of the fertilizer synergist. According to the synergist, polyaspartic acid derived from plant source amino acid, alginate oligosaccharide extracted from natural brown algae and mannan oligosaccharide extracted from plants are used as main raw materials, and the polyaspartic acid, the alginate oligosaccharide and the mannan oligosaccharide cooperate to form an induction-complexation-adsorption three-effect-in-one mechanism, wherein the alginate oligosaccharide and the mannan oligosaccharide induce plant root activity and stress resistance gene expression; the polyaspartic acid is dominated to form a multi-point weak complex network, so that slow release and controlled release of nitrogen and potassium ions are realized; the three components cooperate on the surface of soil colloid to form an adsorption layer, and nutrient leaching loss is reduced. The preparation process adopts a green process of'enzymatic pretreatment-segmented complexing-low-temperature forming ', so that the oligosaccharide activity is maintained, and the use of an organic solvent is avoided. The obtained synergist can significantly improve the nitrogen utilization rate and the root activity and prolong the fertilizer efficiency period, and is suitable for green and efficient agricultural production of various crops.

The invention discloses a potassium fulvate chelated macroelement water-soluble fertilizer with stress resistance and growth promotion functions, and relates to the technical field of water-soluble fertilizers, the potassium fulvate chelated macroelement water-soluble fertilizer comprises the following raw materials by weight: 167-210 parts of mineral source potassium fulvate, 450-460 parts of potassium nitrate, 300-310 parts of urea, 150-160 parts of potassium dihydrogen phosphate, 30-40 parts of potassium sulfate, 15-25 parts of EDTA-disodium, and 5-15 parts of citric acid. 0.5 to 1.5 parts of brassinolide and 4 to 6 parts of polyaspartic acid; according to the potassium fulvate chelated macroelement water-soluble fertilizer with the stress-resistant and growth-promoting functions, through chelation cooperation of potassium fulvate and nitrogen, phosphorus and potassium, the solubility of the chelated phosphorus element in water is increased, and the chelated phosphorus element can be more uniformly distributed in soil; by adopting an EDTA-disodium and citric acid composite chelating system, volatilization and loss of nitrogen elements are reduced, the problem of precipitation of calcium, magnesium and phosphorus is solved, and the soil conditioner is suitable for hard water areas and especially has outstanding performance in saline-alkali soil and arid areas.

The invention belongs to the technical field of stainless steel surface treatment, and particularly relates to a stainless steel passivation solution and a preparation method thereof. The water-based cutting fluid is prepared from the following raw materials: cerium salt, copper sulfate, citric acid, sodium dihydrogen phosphate, ammonium molybdate, sodium tungstate, aminated-silane modified SiO2 nanoparticles, polyethylene glycol, L-ascorbic acid, polyaspartic acid, an anti-settling agent, a surfactant and the balance of deionized water. According to the invention, a three-dimensional network skeleton is constructed by using aminated-epoxy group silane modified SiO2 nanoparticles, so that the problem of weak interface bonding force of a traditional passivation layer is solved; according to the formula, the proportion of biodegradable components such as citric acid and polyaspartic acid is extremely high, cerate adopts a low-toxicity rare earth compound, molybdenum / tungsten elements are fixed in a stable oxide form, the dosage of EDTA is remarkably reduced through a compounding technology, residual ions are adsorbed in combination with a three-dimensional network, and the balance of environment friendliness and long-acting corrosion resistance is achieved.

The invention relates to a phosphorus-free zinc-free seawater special-purpose scale and corrosion inhibitor, which comprises, by weight, 20-25% of sulfonic acid modified polyaspartic acid, 8-12% of quaternized chitosan, 5-10% of a sulfonate copolymer, 5-10% of polyepoxysuccinic acid, 1-3% of benzotriazole or methyl benzotriazole, 0.5-1% of sodium tungstate, and the balance of deionized water. According to the formula, traditional corrosion inhibitors such as phosphorus and zinc are completely abandoned, functions are achieved through natural polymer derivatives such as sulfonic acid modified polyaspartic acid and quaternized chitosan, and the scale and corrosion inhibitor has the following environmental protection advantages that the scale and corrosion inhibitor does not contain phosphorus and zinc elements at all, and water eutrophication and heavy metal accumulation caused by a traditional phosphorus and zinc formula are avoided.

The invention relates to a composite reverse osmosis membrane acidic cleaning agent, a preparation method and a cleaning process thereof, and belongs to the technical field of environment-friendly water treatment. The cleaning agent comprises the following components in percentage by mass: 4-8% of inorganic acid, 20-40% of organic acid, 1-3% of a surfactant, 0.5-1% of a chelating agent, 0.5-1% of a compound corrosion inhibitor and the balance of deionized water. The composite corrosion inhibitor is formed by compounding 2-mercaptobenzothiazole and the like according to a specific mass ratio, the molecular weight of polyaspartic acid is 5000, and the molar ratio of Zn to Mo in the zinc-molybdate compound is 2: 1. The preparation method comprises the following four steps: firstly preparing a compound corrosion inhibitor premix, then preparing an acidic base solution, and then sequentially adding the components to finally obtain the cleaning solution. According to the cleaning process, a cleaning agent and deionized water are mixed, the membrane flux recovery rate is larger than or equal to 85% through cleaning of a specific process, the reverse osmosis membrane can be effectively cleaned, and the performance of the reverse osmosis membrane can be recovered.

The invention relates to a preparation method of fluorine-free antifouling bio-based polyurea coating resin with high wear resistance, and belongs to the technical field of high polymer materials. According to the method, polydimethylsiloxane (PDMS) is locked in a polyurea matrix through an interpenetrating network polymerization (IPN) technology, and the environment-friendly coating is prepared by combining a bio-based raw material castor oil (CO) and benzene-free isocyanate. The preparation method comprises the specific steps of prepolymer preparation, mixing of polyaspartic acid ester and PDMS, vacuum defoaming and curing forming. The obtained coating does not contain fluorine compounds and volatile organic solvents (VOCs), and has high hydrophobicity (the water contact angle is larger than or equal to 105 degrees), wear resistance (the Taber wear index is smaller than or equal to 0.1558) and excellent mechanical performance (the tensile strength is 16.64-20.69 MPa). By adjusting the content of PDMS (X value is 10-25%), the hardness (69D-77D), surface energy (26.0-27.8 mJ.m <-2 >) and other properties of the coating can be regulated and controlled, and the coating is suitable for antifouling scenes such as building walls and industrial equipment, and has remarkable environmental protection advantages and application prospects.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The invention relates to the technical field of glass cleaning agents, in particular to an environment-friendly cover plate glass cleaning agent and a preparation method thereof. The environment-friendly cover plate glass cleaning agent comprises the following raw materials in percentage by weight: 12-20% of inorganic base, 8-12% of a surfactant, 5-8% of a chelating agent, 3-5% of a humectant, 1-3% of an adsorbent, 1-3% of a dispersing agent, 0.3-1% of a buffering agent and the balance of deionized water, the surfactant is dodecyl glucoside and dodecyl ethyoxyl sulphobetaine, and the weight range ratio of the dodecyl glucoside to the dodecyl ethyoxyl sulphobetaine is (3-1): 1; the chelating agent is one or more of sodium gluconate, sodium polyaspartate and sodium polyepoxysuccinate. According to the present invention, the degradable surfactant and the degradable chelating agent are adopted, and the dispersant is added to modify the nanometer titanium dioxide, such that the low pollution property is achieved while the high decontamination efficiency and the anti-fingerprint ability are considered.

The invention relates to the technical field of amorphous calcium carbonate preparation, in particular to rosin-coated stable amorphous calcium carbonate and a preparation method and application thereof. Preparing a polyaspartic acid solution, adding an alcohol organic solvent to obtain a composite solvent, adding the regenerated micro-powder into the composite solvent, stirring and uniformly mixing to obtain a suspension, injecting CO2, and carrying out wet carbonization, vacuum filtration separation, washing and drying to obtain regenerated micro-powder micron particles containing ACC; the preparation method comprises the following steps: adding the calcium carbonate into a rosin solvent, uniformly stirring and mixing, and then carrying out vacuum filtration separation, washing and drying to obtain the rosin-packaged amorphous calcium carbonate micron particles. A uniform coating layer can be formed on the surfaces of ACC particles in a viscous solvent state, so that the influence of moisture on ACC crystallization is fully isolated, and the ACC stability is effectively maintained. Meanwhile, controllable dissolution is achieved through protonation in an alkaline environment, the gelling function of calcium carbonate can be recovered in a cement system, and the material performance is improved.

The invention belongs to the technical field of comprehensive utilization of rare earth resources, and particularly relates to a combined inhibitor and a calcium-containing rare earth ore flotation method thereof. The combined inhibitor is a combination of an organic chelating agent aqueous solution and a water glass aqueous solution; the organic chelating agent is one of polyaspartic acid, hydrolytic polymaleic acid and carboxymethyl chitosan; the mass ratio of the organic chelating agent to the water glass is 2: (10-25); the mass percent of the organic chelating agent aqueous solution is 2-10%, and the mass percent of the water glass aqueous solution is 5-8%. The combined inhibitor has the advantages of being high in selective inhibition effect on calcium-containing gangue minerals, environmentally friendly, environmentally friendly, easy to degrade, low in reagent dosage and the like, the grade and the recovery rate of rare earth in obtained rare earth ore concentrate are high, and the process structure is simple.

The invention belongs to the field of preparation of soil conditioners, and particularly relates to a soil loosening and root promoting soil conditioner and a preparation method thereof. A polymer formed by vinyltriethoxysilane, polyacrylic acid and coumarin under the catalytic action of citric acid is mixed with porous powder obtained after crushing and nutrient organic matter, and freeze-drying is performed to obtain the soil-loosening improved fermentation substrate which can be slowly released in soil; polyaspartic acid and acetylchitosamine are cross-linked under the catalytic action of N-hydroxysuccinimide, root-promoting nutrition powder and auxiliary root-promoting components are mixed, and the obtained composite root-promoting agent can significantly promote the growth of plant root systems; a porous structure contained in the protective stability maintaining agent can provide a relatively stable microenvironment for effective components, and the soil loosening and root promoting agent is mixed with the soil loosening and improving fermentation substrate and the composite root promoting agent, so that the prepared soil loosening and root promoting soil conditioner is remarkable in soil loosening and root promoting effect, long-acting and stable, small in dosage, obvious in effect and stable in conditioning effect after being stored.

The invention discloses a special slow-release compound fertilizer for corn and a preparation method thereof, the special slow-release compound fertilizer comprises the following raw materials by weight: 30-40 parts of urea, 15-20 parts of ammonium sulfate, 20-25 parts of potassium sulfate, 15-25 parts of monoammonium phosphate, 2-3 parts of a seaweed extract, 0.5-1.5 parts of polyaspartic acid, 0.5-1.5 parts of trace elements, and 0.5-1 part of a slow-release agent, the slow-release agent comprises DMPP, the trace elements comprise zinc-boron-titanium citrate, and the slow-release agent comprises potassium sulfate, potassium sulfate, potassium sulfate, monoammonium phosphate, polyaspartic acid, zinc-boron-titanium citrate. The seaweed extract comprises chitosan. DMMP is added into the formula, so that stable supply of nitrogen and synergistic yield increase benefits are achieved; the chitosan, the titanium zinc borate citrate and the polyaspartic acid are added, so that the absorption efficiency of the root system is further improved, the robust growth of corn plants is promoted together, and the acre yield and the grain quality of the corn are effectively improved.

The invention relates to the technical field of adhesives, and particularly discloses a low-formaldehyde environment-friendly adhesive and a preparation method thereof. The invention relates to a low-formaldehyde environment-friendly adhesive which is prepared from the following raw materials in parts by mass: 30-50 parts of modified starch, 15-25 parts of vegetable protein, 5-10 parts of modified nano cellulose, 2-5 parts of a composite cross-linking agent and 80-150 parts of water, the composite cross-linking agent comprises amino silane and polyaspartic acid; the modified starch is prepared by performing graft copolymerization on starch subjected to enzymolysis by alpha-amylase and composite anhydride; the vegetable protein is subjected to alkalization and heat treatment before being used; the modified nano-crystalline cellulose is prepared by performing ring-opening etherification reaction on nano-crystalline cellulose, epoxypropane and ethylene oxide in sequence. The low-formaldehyde environment-friendly adhesive prepared by the invention has relatively good bonding strength and relatively low formaldehyde emission.

The invention relates to the technical field of functional coatings, in particular to a high-strength rain erosion resistant coating and a preparation method thereof.The high-strength rain erosion resistant coating is composed of polyaspartic acid ester resin (A) and a high-elasticity aliphatic polyurea curing agent (B), 2, 3-bis (aminomethyl) cyclohexane, chain-extended diamine and diethyl maleate are subjected to an addition reaction to prepare the high-molecular polymer; the component B is synthesized from dicyclohexylmethane diisocyanate, isophorone diisocyanate, polycarbonate diol and a hexamethylene diisocyanate tripolymer step by step; the high-strength rain-erosion-resistant coating is obtained by adding the functional filler, the flatting agent, the ultraviolet absorbent and the environment-friendly solvent into the component A and the component B in a stirring reaction kettle and stirring in a heat preservation mode, a coating film of the high-strength rain-erosion-resistant coating has excellent mechanical strength, meanwhile, the high-strength rain-erosion-resistant coating is more resistant to rain erosion, construction is convenient and fast, and the high-strength rain-erosion-resistant coating is remarkably superior to a commercially available optimal protective film; the method can be widely applied to outer surface protection of high-end equipment such as aviation, wind power and high-speed rails.

The invention relates to the technical field of coatings, and discloses a composition for a polyurethane waterproof coating, the polyurethane waterproof coating as well as a preparation method and application of the polyurethane waterproof coating. The composition contains a main agent and an auxiliary agent, the main agent is formed by polymerizing raw material components including polyol, diisocyanate A, bisphenol A epoxy acrylate and a prepolymer; the prepolymer is prepared by a method comprising the following steps: in the presence of a polymerization catalyst, carrying out contact reaction on bisphenol A epoxy resin, polyaspartic acid ester, diisocyanate B and an isocyanate tripolymer to obtain the prepolymer, the use amount molar ratio of the bisphenol A epoxy resin to the polyaspartic acid ester to the diisocyanate B to the isocyanate tripolymer is 1: (0.6 to 1.5): (0.5 to 1): (0.05 to 0.5). The coating provided by the invention is high in modulus, and has higher tensile strength, hardness and waterproof performance.

The invention provides a solvent-free polyaspartic acid ester polyurea floor coating and a preparation method thereof, the coating comprises a main agent and a curing agent, the main agent comprises polyaspartic acid ester resin, a functional auxiliary agent and a pigment filler; the functional auxiliary agent comprises a dispersing agent, a defoaming agent, a flatting agent, a water absorbent and a coupling agent, and the pigment filler comprises pigment and filler; the curing agent comprises a hydroxyl cyclic ketone compound modified polyisocyanate composition. By optimizing and modifying the components in the radix asparagi polyurea coating, a terrace material can be endowed with excellent properties in the aspects of rapid curing, high-humidity constructability, performance retention rate after curing, leveling wettability, good adhesive force with various coating substrates, high and low temperature resistance, high strength and the like, and the comprehensive performance is excellent; the method is suitable for different terrace application fields.

The present invention relates to an adhesive production method for fast curing at low temperatures for structurally bonding materials together, and to an adhesive composition obtained by this method.

The invention provides a polymorphic zinc and organic acid composition for targeted scalp barrier repair as well as a preparation method and application of the polymorphic zinc and organic acid composition. The composition is prepared from the following components in percentage by mass: 1 to 80 percent of yeast / zinc fermentation product, 1 to 20 percent of polyaspartic acid chelated zinc, 0.5 to 20 percent of gluconolactone, 0.5 to 6 percent of hydroxydecanoic acid, 1 to 10 percent of succinyl glycan and the balance of water or other pharmaceutically / cosmetically acceptable carriers. Wherein the mass ratio of the yeast / zinc fermentation product to the polyaspartic acid chelated zinc is (1: 1)-(8: 1); the mass ratio of the hydroxydecanoic acid to the gluconolactone is (1: 0.5)-(1: 3). The invention provides an efficient, mild and multi-effect synergistic nursing composition, and the composition realizes a three-in-one scalp regulation mechanism of barrier repair, mild bacteriostasis and long-acting moisturizing through unique component synergy.

The invention relates to the technical field of water treatment agents, and provides a solid slow-release scale inhibitor and a preparation method thereof. The preparation method of the solid slow-release scale inhibitor comprises the following steps: dispersing an aminated MOFs material in a mixed solvent of methanol and water, adding poly (N-isopropylacrylamide) and a cuprous bromide / pentamethyldiethylenetriamine catalytic system, and performing separation and freeze drying after reaction to obtain a temperature-sensitive functionalized MOFs material; dispersing the hyperbranched polyaspartic acid-itaconic acid copolymer in a mixed solvent of methanol and water, adding the temperature-sensitive functionalized MOFs material, reacting, and drying to obtain a polymer-loaded MOFs material; and dissolving zirconium acetate in water, adjusting the pH value to 4.0, adding the polymer-loaded MOFs material, carrying out a reaction, and carrying out centrifugal washing and drying. The solid slow-release scale inhibitor provided by the invention has a stable and effective scale inhibition effect.

The invention relates to a saline-alkali soil improver, and belongs to the field of saline-alkali soil treatment, and the saline-alkali soil improver comprises the following substances by weight: 15-20 parts of amino-oligosaccharin; 4 to 6 parts of astragalus oligosaccharide; 3-5 parts of ligusticum chuanxiong hort oligosaccharide; 6-8 parts of soybean oligosaccharide; 2-4 parts of Chinese wolfberry oligosaccharide; 20 to 30 parts of modified polyaspartic acid; 3-5 parts of a complex microbial inoculant; 4-6 parts of calcium carbonate; and 30-40 parts of sweet potato starch production residual peel residues. The amino-oligosaccharin, the astragalus oligosaccharide, the ligusticum chuanxiong hort oligosaccharide, the soybean oligosaccharide and the Chinese wolfberry oligosaccharide are added, so that the effects of promoting plant growth, improving soil quality and enhancing the salt resistance of plants can be achieved; through the synergistic effect of various oligosaccharides, effective microbial communities in soil can be activated, regeneration of harmful microbial communities can be inhibited, soil nutrition can be increased, the soil structure can be improved, the immunity of plants can be improved, and plant diseases and insect pests can be reduced, so that the fertility of the soil and the growth environment of the plants can be improved, and the growth of the plants can be promoted.

The invention relates to the technical field of compound fertilizers, and discloses a root-promoting stress-resistant corn special fertilizer and a preparation method thereof, the root-promoting stress-resistant corn special fertilizer comprises an organic compound matrix, 8-15 parts of sodium alginate, 3-10 parts of bacillus subtilis, 3-7 parts of chelated zinc, 8-15 parts of potassium fulvate, 5-10 parts of polyaspartic acid, 17-25 parts of potassium nitrate, 12-20 parts of ammonium sulfate, 10-20 parts of bentonite and 25-35 parts of monoammonium phosphate, through the synergistic effect of various components in the fertilizer, efficient promotion of corn growth is realized, nitrogen provided by monoammonium phosphate promotes corn leaf growth and enhances photosynthesis, and phosphorus mainly promotes root development, so that the root is more developed, and the absorption capacity of the root to moisture and nutrients is improved; meanwhile, the resistance of the corn to adverse situations such as drought and cold is enhanced.

The invention belongs to the technical field of radix asparagi polyurea, and particularly relates to an elastic radix asparagi polyurea color sand self-leveling floor material and a preparation method thereof. The water-based paint is prepared from a component A and a component B. The component A comprises polyaspartic acid ester resin, inorganic filler, a water removal agent, colored sand, color paste and auxiliaries. The component B is prepared from isophorone diisocyanate based polyisocyanate, an isocyanate tripolymer and a solvent; the auxiliary agent is a mixture of a dispersing agent, a defoaming agent, a light stabilizer, an ultraviolet light absorber, a flatting agent, an anti-settling agent and a silane coupling agent. The component A and the component B react to generate a urea bond structure, so that the material is endowed with excellent toughness and chemical corrosion resistance; the component B is reasonably matched, so that the rebound resilience of the material is improved, and the safety and comfort of the floor material are further improved; the used raw materials do not contain groups prone to yellowing, so that the prepared floor material is not prone to yellowing, color fading or pulverization when exposed to sunlight outdoors for a long time, and excellent weather resistance is achieved.

The invention provides a tobacco leaf nitrogen efficient sesame cake fertilizer and a preparation method thereof, and relates to the field of fertilizers. The nitrogen efficient sesame cake fertilizer for tobacco leaves comprises a solid material and water, the solid material comprises the following raw materials in percentage by mass: 60%-70% of sesame cake, 6%-8% of cottonseed cake, 12%-26% of rice husk and 8%-10% of polyaspartic acid, wherein the total mass of the raw materials is 100%. The nitrogen efficient sesame cake fertilizer for the tobacco leaves can effectively improve the quality of the tobacco leaves, improve the growth vigor of the tobacco leaves and improve the hacking degree of flue-cured tobacco leaves to a certain extent, and the cottonseed cake is added due to the fact that gossypol with a bactericidal effect is contained in the cottonseed cake, and the occurrence of soil diseases can be relieved or inhibited.

The invention discloses an amino acid water-soluble fertilizer and a preparation process thereof, and relates to the technical field of water-soluble fertilizer preparation. The nutrient solution is prepared from the following raw materials: 35 to 45 parts of compound amino acid, 8 to 12 parts of monopotassium phosphate, 3 to 4 parts of potassium sulfate, 1.5 to 2 parts of disodium calcium ethylenediamine tetraacetate, 1.2 to 1.8 parts of EDTA (Ethylene Diamine Tetraacetic Acid) chelated magnesium, 0.3 to 0.7 part of chelated zinc, 0.1 to 0.3 part of zinc sulfate, 2 to 3 parts of citric acid-monopotassium phosphate buffer solution, 2 to 3 parts of algal polysaccharide, 0.5 to 1 part of mannitol, 2 to 4 parts of potassium fulvate, 1 to 2 parts of chitosan oligosaccharide and 0.5 to 1 part of nano silicon dioxide. 0.5-1 part of polyaspartic acid; 1-2 parts of a dispersing agent; the compound amino acid raw materials comprise 60-70% of fish scale protein water-soluble amino acid and 30-40% of bamboo shoot protein water-soluble amino acid; the amino acid water-soluble fertilizer provided by the invention can effectively improve the nutrient absorption efficiency of crops and promote the growth of the crops.

The invention provides an elastic polyaspartic acid ester polyurea floor coating and a preparation method thereof, the floor coating comprises a main agent and a curing agent, the main agent comprises first polyaspartic acid ester resin, second polyaspartic acid ester resin, a functional auxiliary agent, and a pigment filler; the curing agent comprises first isocyanate and second diisocyanate; the first polyaspartic acid ester resin is selected from PAE0760, and the second polyaspartic acid ester resin is selected from F520; the first isocyanate is selected from a glycidyl ether compound modified HDI (Hexamethylene Diisocyanate) tripolymer; and the second diisocyanate is selected from HDI (hexamethylene diisocyanate) uretdione. The polyaspartic acid ester polyurea floor coating disclosed by the invention can be used for obviously improving the tensile strength and the scratch resistance of the polyaspartic acid ester polyurea floor coating and improving the leveling property of the polyaspartic acid ester polyurea floor coating while keeping good elastic property, and is a solvent-free polyaspartic acid ester polyurea floor coating with excellent comprehensive performance.

The invention relates to a multifunctional scale inhibition and dispersion agent applied to a reverse osmosis system and a preparation method of the multifunctional scale inhibition and dispersion agent. The multifunctional scale inhibition and dispersion agent comprises the following components in parts by mass: 6-9 parts of CS-GLU, 1.5-2.5 parts of ascorbic acid, 3-4.5 parts of polyaspartic acid, 1-2 parts of sodium gluconate, 2-4 parts of polyethylene glycol, 0.005-0.03 part of nano SiO2, 1-3.5 parts of triammonium citrate, 3-6 parts of acetic acid, 0.2-0.5 part of urea, 1-2.5 parts of EDTA-2Na and 65.47-81.295 parts of deionized water. A traditional scale inhibitor only depends on chemical chelation and has no repair and oxidation resistance. According to the product, chemical scale inhibition and physical repair (film formation and nano filling) are cooperated, and the limitation of a single function is broken through; an anti-oxidation system (ascorbic acid + EDTA) is arranged in the product to replace a dangerous reducing agent, so that the service life of the membrane is prolonged; a traditional scale inhibitor is sensitive to high-valence ions such as Fe < 3 + > and Al < 3 + > and is narrow in applicable water quality range. The charge of the product is adapted to zwitterionic characteristics, and deposition pollution of a traditional anionic scale inhibitor is avoided.

The invention discloses a circulating water purification treatment process for heat exchange equipment, and relates to the technical field of circulating water purification treatment, and the circulating water purification treatment process comprises the following steps: preparing a polyaspartic acid-silane functionalized grafting intermediate; selecting a porous zeolite matrix, and performing acid activation treatment; the preparation method comprises the following steps: preparing a zeolite matrix, soaking the zeolite matrix in sol, standing, defoaming, heating and calcining to obtain a nano TiO2 coated zeolite matrix of which the surface is coated with nano titanium dioxide; immersing the nano TiO2 coated zeolite matrix into the solution, adjusting the pH value of the solution, and stirring for reaction to obtain a PASP functionalized zeolite filter material; and immersing the PASP functionalized zeolite filter material into a silver nitrate solution, carrying out photocatalytic reduction, and carrying out in-situ reduction and deposition on silver ions to obtain the silver / titanium dioxide-polyaspartic acid synergistic functionalized composite filter material. The composite filter material with synergistic functions realizes efficient scale inhibition and sterilization and rapid purification, shows excellent stability and durability under severe working conditions of high temperature, long period and the like, and is environment-friendly and low in maintenance cost.

The invention relates to the technical field of biomedical materials, in particular to a drug-loaded multi-stimulation response type hydrogel microneedle and a preparation method thereof. The drug-loaded multi-stimulus responsive hydrogel microneedle is prepared from phenylboronic acid grafted methacrylated hyaluronic acid, methacrylated gelatin, drug molecules and strontium-doped hydroxyapatite modified by polyaspartic acid. The drug-loaded multi-stimulus-responsive hydrogel microneedle has pH and ROS dual responses at the same time, can efficiently release drug molecules in a specific acid environment or ROS environment, and has good biodegradability and biocompatibility, so that the drug-loaded multi-stimulus-responsive hydrogel microneedle can be used for preparing the drug-loaded multi-stimulus-responsive hydrogel microneedle, and the drug-loaded multi-stimulus-responsive hydrogel microneedle can be used for preparing the drug-loaded multi-stimulus-responsive hydrogel microneedle. The application of the hydrogel microneedle in the field of drug delivery is expanded, and the hydrogel microneedle has important medical significance.

A polyaspartic composition comprises a reaction product of a polyamine, a Michael addition receptor, and a polyisocyanate, wherein the reaction with the polyisocyanate is in the presence of a zirconium metal catalyst. The compositions of the present invention may be used in floor coatings, to provide an increased work time for large coating areas, while maintaining a relatively short walk on time, coating hardness and appearance.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a high-efficiency yield-increasing liquid fertilizer containing enzymolysis nereis and a preparation method thereof.The method comprises the steps that the nereis is cleaned and smashed, subjected to freeze-thaw cycle pretreatment and then subjected to enzymolysis through a compound protease preparation containing protease and chitinase under the alkalescence condition, and the liquid fertilizer containing the enzymolysis nereis and the chitinase is obtained; carrying out solid-liquid separation on the obtained enzymatic hydrolysate to obtain enzymatic clam worm liquid; the preparation method comprises the following steps: mixing urea, a phosphorus-potassium fertilizer, trace elements, potassium fulvate and polyaspartic acid in a preparation tank, and then adding an N-carbamoyl-L-glutamic acid-chitosan grafted copolymer and selenocysteine-alginic acid nanoparticles to obtain a nutrient solution; and finally, mixing the enzymolysis nereis solution with the nutrient solution and the plant growth regulator to obtain a finished product. Active substances in the nereis are fully released through a biological enzymolysis technology, the prepared liquid fertilizer has the functions of nutrition supply, physiological regulation and soil improvement, crop growth can be remarkably promoted, the yield can be remarkably increased, and high-value utilization of marine biological resources is achieved.