376 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 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 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 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 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 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 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 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 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 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 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.

The invention discloses a sludge synergistic curing agent based on microbial mineralization and nano-compounding and a preparation method thereof. The sludge synergistic curing agent is prepared from the following components in percentage by mass: 20%-30% of fly ash, 15%-20% of sulphoaluminate cement, 10%-15% of modified phosphogypsum powder, 15%-20% of charcoal loaded nano iron, 5%-10% of attapulgite, 6%-10% of polyaspartic acid-co-acrylamide, 4%-5% of sodium carboxymethyl cellulose, 3%-5% of silica fume, 1%-3% of magnesium carbonate and 1%-2% of tartaric acid. The sludge synergistic curing agent is used for innocent treatment of river dredging sludge and industrial sludge, and rapid dehydration and high-strength curing of sludge and long-acting stabilization of pollutants are realized through synergism of the adsorption performance of the biochar, the reduction stabilization effect of the nano-iron and the cementation effect of a composite gel system.

The invention discloses an anti-bending ABS composite material for clothes hangers and a production process of the anti-bending ABS composite material, and relates to the technical field of plastic products. The anti-bending ABS composite material for the clothes hanger is prepared from the following raw material components in parts by mass: 100 to 120 parts of ABS resin, 10 to 15 parts of SAN resin, 20 to 30 parts of reinforcing auxiliary materials, 20 to 25 parts of antioxidant auxiliary materials, 0.5 to 1.5 parts of lubricating agents and 1 to 2 parts of light stabilizers, wherein the reinforced auxiliary material is prepared by the following steps: putting carboxymethyl cellulose into deionized water, continuously stirring for 2-3 hours, adding modified polyaspartic acid and calcium chloride, stirring and mixing, adding short carbon fibers, stirring for 20-30 minutes, adding a sodium carbonate solution, stirring and reacting for 0.5-2 hours, filtering, washing and drying to obtain the modified short carbon fibers; and mixing the mixture with SEBS-g-MAH, carrying out melt extrusion at 220-240 DEG C, and pelletizing to obtain the reinforced auxiliary material.

This invention discloses a high-performance solvent-free self-healing wear-resistant topcoat for wind turbine blades and its preparation method, belonging to the field of wind power generation technology. The high-performance solvent-free self-healing wear-resistant topcoat comprises component A and component B. Component A contains IPDI trimer, POSS-isocyanate nano-hybrid, urea-based supramolecular thickener, and latent organic bismuth catalyst. Component B contains modified polyaspartic acid ester, 3-aminopropyltrimethoxysilane, and fluorinated segment polyaspartic acid ester. The high-performance solvent-free self-healing wear-resistant topcoat of this invention constructs a rigid and tough cross-linked network by introducing POSS-isocyanate nano-hybrid and modified polyaspartic acid ester, solving the interfacial incompatibility problem of traditional physically blended coatings. Simultaneously, it endows the coating with excellent wear resistance, strong adhesion, and micro-scratch self-healing ability. This topcoat is a solvent-free system, environmentally friendly, and has good application performance, effectively extending blade life.

The invention belongs to the technical field of petrochemical anticorrosion, and provides a multifunctional water-soluble corrosion inhibitor for an oil refining device and a preparation method of the multifunctional water-soluble corrosion inhibitor, and the corrosion inhibitor is a functionalized grafted copolymer obtained by a ring-opening reaction of a succinimide ring on a polysuccinimide intermediate and a plurality of amino-containing compounds; the amino-containing compound at least comprises gemini imidazoline quaternary ammonium salt with a corrosion inhibition function; a polyaspartic acid chain segment precursor with scale inhibition and dispersion functions; the organic amine compound has targeted chelating and pH buffering functions and contains sulfonic acid groups and carboxyl groups; according to the invention, double-anchored gemini imidazoline quaternary ammonium salt is taken as a corrosion inhibition core, and a polysuccinimide ring-opening grafting process is combined, so that chain segments with corrosion inhibition, scale inhibition, targeted buffering and temperature-sensitive self-repairing functions are covalently integrated into a same polymer main chain, and multi-functional efficient protection of a single agent in an oil refining device water phase system is realized.

This invention relates to the field of electroless plating technology, and more particularly to a low-phosphorus electroless nickel plating solution and a method for nickel plating on an aluminum alloy substrate. The low-phosphorus electroless nickel plating solution comprises the following components by mass concentration: a nickel ion source in the form of Ni... 2+ Calculated as 1.0~5.0 g / L; hypophosphite as H2PO2 ‑ The concentrations are calculated as follows: 20–45 g / L; glycine 5–40 g / L, gluconate 5–60 g / L; polyaspartic acid and / or its salts 0.2–5.0 g / L; pH buffer 2–25 g / L; alkyl glycosides 0.05–1.0 g / L; iodate stabilizer, in IO3... ‑ The concentration is calculated to be 0.2~5.0 mg / L. This invention maintains a high deposition rate and significantly improves the tolerance of by-products in the bath solution under low nickel ion concentration conditions. It is also free of heavy metals and sulfur-containing organic stabilizers, reducing the metal load and environmental risk of the waste liquid. It is suitable for various aluminum alloy matrices treated with double zinc replacement.

The application belongs to the field of metal corrosion protection, and discloses a preparation method of graphene oxide-polyaspartic acid nanomaterial, which comprises the following steps: dispersing nano graphene oxide in a solvent to obtain a nano graphene oxide dispersion; dissolving polyaspartic acid, 4-dimethylaminopyridine and N,N-dicyclohexyl carbodiimide in an organic solvent to obtain a polyaspartic acid mixture; uniformly mixing the nano graphene oxide dispersion and the polyaspartic acid mixture according to a mass ratio of 1:1-1.5 of the nano graphene oxide and the polyaspartic acid, and performing a reaction under the protection of a certain temperature and an inert atmosphere; and after the reaction is completed, performing solid-liquid separation and collecting a solid product, namely, graphene oxide-polyaspartic acid nanomaterial. The corrosion inhibitor of the application can achieve efficient corrosion inhibition effect by adding a small amount of the corrosion inhibitor into water, and the operation is simple and the cost is low.

The application discloses a compound fertilizer for promoting cotton high yield and a preparation method thereof, relates to the technical field of cotton fertilizer, and comprises first mother liquor A, second mother liquor B and third mother liquor C which are prepared, stored and packaged separately; the first mother liquor A contains urea phosphate, monoammonium phosphate, anhydrous citric acid, malic acid and manganese sulfate monohydrate; the second mother liquor B contains commercial 11-37-0 liquid ammonium polyphosphate, ammonium salt type polyaspartic acid solution, purified fulvic acid clear liquid and tri-potassium citrate; and the third mother liquor C is a mixed system of polyol complex state boron clear pre-liquid and medium complex state zinc pre-liquid. The application can improve the effective state stability of phosphorus, zinc and boron, reduce the risks of precipitation fouling and dripping head blockage, alleviate the risks of local salt peak and root injury in the seedling stage, promote the uniform emergence and young root growth of cotton, and improve the yield.

The invention belongs to the technical field of preparation of nano functional materials, and particularly discloses magnetic nano ferroferric oxide regulated and controlled by polyaspartic acid and a preparation method and application thereof.The preparation method comprises the following steps that 1, a dispersing agent polyaspartic acid or a salt water solution of the polyaspartic acid is added into a Fe < 2 + > / Fe < 3 + > mixed solution, and the mixture is stirred to be uniform to form a precursor dispersion solution; (2) heating the precursor dispersion liquid, dropwise adding an alkali source to adjust the pH value of a reaction system to 8-12, and carrying out a nucleation reaction under ultrasonic treatment; and (3) after the reaction is finished, separating the magnetic particles through an external magnetic field, alternately washing with deionized water and ethanol for 2-5 times, and carrying out vacuum drying to obtain the magnetic nano ferroferric oxide particles. The prepared magnetic nano ferroferric oxide has the particle size of 30-80nm, the saturation magnetization of more than or equal to 36emu / g, stable dispersion and the cell survival rate of more than or equal to 80%. The method solves the problems of particle aggregation, weak magnetism and complex process in the traditional method, can be used for wastewater treatment, and is economical and efficient in process and suitable for large-scale production.

The present application relates to the technical field of corn fertilization, and provides a corn whole growth period precise fertilization method, which comprises the following steps: S1, applying base fertilizer containing nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, brown algal polysaccharide, calcium ammonium nitrate, zinc citrate, potassium humate and gamma-polyglutamic acid between corn rows when corn is sowed; S2, spraying leaf fertilizer containing potassium dihydrogen phosphate, magnesium sulfate, alginic acid and polyaspartic acid during the corn filling stage; the base fertilizer is slow-release fertilizer, and after granulation, the base fertilizer is coated with a polyester composite layer and a wax layer in sequence. According to the present application, the base fertilizer is made into double-layer coated slow-release particles and applied with sowing, the outer layer of furfural / wax forms a hydrophobic barrier to inhibit the burst release and salt damage during the seedling stage, and the inner layer of polyester composite layer forms controllable water channels and slowly hydrolyzes with time, so that nutrients are supplied in stages in a platform mode during the corn growth period, and precise fertilization and efficient utilization are achieved during the whole growth period.

The invention relates to a sealant for a waterproof photovoltaic frame. The sealant is prepared from the following components in parts by mass: 80 to 100 parts of fluorine modified polyaspartic ester, 100 to 120 parts of silane modified isocyanate, 40 to 60 parts of modified nano titanium dioxide, 8 to 10 parts of curing catalyst and 10 to 15 parts of adhesion promoter. The waterproof sealant has the effect of improving the waterproof performance, the adhesion performance and the aging resistance of the sealant.

The invention provides a nano particle / fiber multi-scale reinforced polyurea anti-explosion material and a preparation method thereof. The polyurea anti-explosion material comprises a component A and a component B, and the mass ratio of the component A to the component B is (0.9-1.1): 1; the component A is prepared from the following components in parts by weight: 35 to 45 parts of polyaspartic acid ester resin, 0.5 to 3 parts of modified nano particles, 0.5 to 3 parts of modified chopped fibers, 0.5 to 1 part of a de-foaming agent and 10 to 15 parts of a solvent; the component B is prepared from the following components in parts by weight: 43 to 47 parts of polyisocyanate and 3 to 7 parts of solvent; wherein the nano particles and the chopped fibers are modified through a silane coupling agent; the mechanical property and the impact resistance of the polyurea anti-explosion material are remarkably improved, large-area construction can be realized through a high-pressure spraying process, and the polyurea anti-explosion material has good engineering applicability and economical efficiency.

The application discloses a circulating water purification treatment process for heat exchange equipment and relates to the technical field of circulating water purification treatment, and comprises the following steps: preparing a polyaspartic acid-silane functionalized graft intermediate; selecting a porous zeolite matrix and performing acid activation treatment; immersing the matrix in sol, standing for defoaming, and performing temperature rising calcination to obtain a nano TiO2-coated zeolite matrix coated with nano titanium dioxide on the surface; immersing the nano TiO2-coated zeolite matrix in a solution, stirring and reacting after adjusting the pH value of the solution to obtain PASP functionalized zeolite filter material; immersing the PASP functionalized zeolite filter material in a silver nitrate solution, performing photocatalytic reduction, reducing and depositing silver ions in situ, and obtaining silver / titanium dioxide-polyaspartic acid synergistic functionalized composite filter material. Through the synergistic composite filter material, efficient scale inhibition and sterilization and rapid purification are realized, excellent stability and durability are exhibited under harsh working conditions such as high temperature and long period, the application is environment-friendly, and the maintenance cost is low.

The present invention relates to a kit comprising a first component of a polyisocyanate and a second component of a mixture of polyaspartic esters. It also relates to a coated pipe or tank element comprising a coating formed from such a kit, as well as a pipe or tank comprising one or more of these coated pipe or tank elements. Furthermore, it relates to a method for protecting a raw cast iron, steel, or concrete pipe or tank element using such a kit.

The invention relates to the field of slow-release fertilizers, in particular to preparation of a hydrogel slow-release fertilizer. The invention discloses a preparation method of a slow release fertilizer of polyaspartic acid, carboxymethyl cellulose hydrogel, stearic acid and urea. Comprising the following steps: (1) preparing polysuccinimide, (2) preparing a polyaspartic acid gel solution by using the polysuccinimide, and then preparing a polyaspartic acid / carboxymethyl cellulose hydrogel solution by using the polyaspartic acid gel solution; the method further comprises the following steps: (3) preparing stearic acid / urea particles; 4, the polyaspartic acid / carboxymethyl cellulose hydrogel solution and the stearic acid / urea granules are used for preparing and obtaining the polyaspartic acid-carboxymethyl cellulose hydrogel-stearic acid-urea slow-release fertilizer.By means of the method, the slow-release fertilizer with the dual functions of water retention and slow release can be prepared and obtained.

The application belongs to the technical field of agricultural fertilizer, and particularly relates to a high-efficiency yield-increasing liquid fertilizer containing enzymatic nereid and a preparation method thereof, which comprises the following steps: washing and crushing nereid, and then performing freeze-thaw cycle pretreatment; under weak alkaline conditions, a complex protease preparation containing protease and chitinase is used for enzymolysis, and an enzymatic nereid liquid is obtained through solid-liquid separation; urea, phosphate-potassium fertilizer, trace elements, potassium fulvate and polyaspartic acid are mixed in a preparation tank, and then N-carbamoyl-L-glutamic acid-chitosan graft copolymer and seleno-cysteine-alginic acid nanometer microspheres are added to obtain a nutrient liquid; finally, the enzymatic nereid liquid, the nutrient liquid and a plant growth regulator are mixed to obtain a finished product. Through the biological enzymolysis technology, the active substances in the nereid are fully released, the prepared liquid fertilizer has the functions of nutrient supply, physiological regulation and soil improvement, can significantly promote crop growth and increase yield, and realizes high-value utilization of marine biological resources.