225 results about "Polyaspartic acid" patented technology

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 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 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 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 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 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.

The invention discloses a sulfur-nitrogen co-doped carbon quantum dot modified polyaspartic acid derivative as well as a preparation method and application thereof. The derivative is prepared by taking citric acid and L-cysteine as precursors, synthesizing sulfur-nitrogen co-doped carbon quantum dots (SN-CDs) with rich functional groups on the surface by adopting a hydrothermal method, and introducing the sulfur-nitrogen co-doped carbon quantum dots into a side chain of polyaspartic acid (PASP) through graft copolymerization. The derivative not only retains the complexing ability of polyaspartic acid with metal ions such as calcium and magnesium, but also has excellent scale and corrosion inhibition performance; the optical characteristics of the carbon quantum dots are inherited, and stable fluorescence can be emitted under the excitation of specific wavelength, so that in-situ and real-time concentration monitoring in an industrial circulating cooling water system by utilizing a fluorescence spectrum technology is supported. The product does not contain phosphorus, is environment-friendly, conforms to the development trend of a green water treatment technology, and provides an innovative material solution for intelligent monitoring and fine management of a circulating water system while improving the comprehensive performance of scale and corrosion inhibition.

The present application relates to a kind of preparation method of nitrogen-oxygen co-doped nanoporous carbon material and its application, with the following steps: resorcinol, polyaspartic acid potassium, polyvinyl alcohol, 4-dimethylaminopyridine are dissolved in distilled water stirring 10~60 minutes, then add sepiolite powder, ultrasonic oscillation at room temperature 30~60 minutes, finally add formaldehyde aqueous solution, seal, continue ultrasonic oscillation 1~3 hours, obtain gel product;The gel product obtained is dried to obtain intermediate;The intermediate obtained is carbonized to obtain black product;The black product obtained is pickled and washed with water, dried to obtain nitrogen-oxygen co-doped nanoporous carbon material.The porous carbon material obtained by the present application has large specific surface area and strong adsorption capacity, and the preparation method has high reaction yield.

The application relates to the technical field of lithium hydroxide, and particularly discloses coated modified anhydrous lithium hydroxide and a preparation method thereof. The coated modified anhydrous lithium hydroxide is prepared by the following steps: weighing an internal matrix and an external coating modifier; the internal matrix is anhydrous lithium hydroxide, and the external coating modifier is one of polyaspartic acid, polyacrylamide or polyacrylic acid; the external coating modifier is dissolved in deionized water to prepare a coating modifier solution; the matrix is coated with the coating modifier solution to obtain wet coated modified anhydrous lithium hydroxide; and the wet coated modified anhydrous lithium hydroxide is dried to obtain the coated modified anhydrous lithium hydroxide. The coated modified anhydrous lithium hydroxide has a physical coating layer on the surface of the anhydrous lithium hydroxide, the operation is simple, the particle hardness can be increased, the dust diffusion caused by collision and friction on the particle surface can be effectively reduced, and the dust raising problem is solved. The coated modified anhydrous lithium hydroxide can guarantee the effective absorption agent content and absorption performance, improve the use safety of the lithium hydroxide absorption agent, and meet the requirements of products of the anhydrous lithium hydroxide in multiple fields.

The invention provides a nanopore probe and application thereof, the nanopore probe comprises a polypeptide, the carboxyl terminal of the polypeptide is connected with a steric hindrance tag, the amino terminal of the polypeptide is connected with polyaspartic acid, and the polypeptide has a restriction enzyme cutting site specifically recognized by target protease. The method can prolong the retention time of the polypeptide in the nanopore, enhance the signal discernibility and improve the signal stability, thereby realizing stable and high-precision quantitative detection of the protease activity.

The application discloses a kind of corrosion and scale inhibitor sulfur removal agent and preparation method thereof, belong to sulfur removal agent technical field, by weight parts including following components: hydroxyl alkyl amine modified triazine compound 30~60 parts, polyaspartic acid scale inhibitor 10~25 parts, sodium gluconate 5~15 parts, ethylenediamine tetramethylene phosphonic acid sodium 3~10 parts, organic phosphonic acid corrosion inhibitor 2~8 parts and water 20~40 parts;The hydroxyl alkyl amine modified triazine compound is prepared by triazine sulfur removal agent and N-methyl diethanolamine or diethanolamine under 50~80 ℃ for 2~4 hours, wherein the molar ratio of triazine sulfur removal agent and hydroxyl alkyl amine is 1:0.3~0.8.The application is prepared by using hydroxyl alkyl amine modified triazine compound as core sulfur removal component, triazine sulfur removal agent and N-methyl diethanolamine or diethanolamine are reacted under specific temperature and time, which greatly improves the capture activity and reaction rate of hydrogen sulfide, and improves water solubility and dispersibility, realizes efficient sulfur removal.

This invention belongs to the field of protective coating technology, specifically relating to a protective coating for transportation vehicles resistant to phosphate ester hydraulic oil and its preparation method. The protective coating comprises component A and component B. Component A includes a polyurea-modified polyester resin, a surface tension modifier, a defoamer, and a mixed solvent. Component B includes an isocyanate prepolymer and xylene. The polyurea-modified polyester resin is prepared from polyether polyol, polyisocyanate, polyaspartic acid ester, polyol, catalyst, and xylene through a specific synthesis process. This protective coating can withstand the corrosion of phosphate ester hydraulic oil, providing a durable protective barrier. It solves the problem of softening and peeling of the protective coating due to leakage and diffusion caused by phosphate ester hydraulic oil spills after a period of use in transportation vehicles.

The application belongs to the field of polyurethane materials, and discloses a two-component bio-based self-cleaning anticorrosive coating for power transmission lines and a preparation method thereof, which comprises A component and B component with a mass ratio of 1:1-2; the A component is composed of the following components in parts by mass: bio-based polyurethane prepolymer 70-75 parts, hydrotalcite 5-8 parts, stearic acid 6-8 parts, modified fumed silica 3-5 parts, dibutyl titanate 0.1-0.2 parts, substrate binder C 3-5 parts, and substrate binder D 4-6 parts. The B component is composed of the following components: bio-based polyaspartic acid ester 85-90 parts, color paste 3-5 parts, defoaming agent 2-3 parts, leveling agent 1-2 parts, anti-precipitation additive 1-2 parts, and silane 2-4 parts. The two-component bio-based self-cleaning anticorrosive coating for power transmission lines does not need primer and topcoat, can meet the requirements of corrosion resistance, weather resistance and self-cleaning effect, can achieve long-acting self-cleaning effect, can improve construction efficiency, and can simplify the construction process.

The invention belongs to the technical field of building materials, and particularly relates to impervious concrete and a preparation method thereof. The impervious concrete comprises a cementing material, aggregate, water and a self-repairing functional component, the self-repairing functional component comprises polyacrylic acid, polyaspartic acid, a calcium ion supplement and a reaction accelerator. According to the application, polyacrylic acid and polyaspartic acid are used as complexing carriers of calcium ions, when concrete micro-cracks appear, the calcium ions are driven by concentration gradient to directionally migrate to the deep positions of the cracks, substitution reaction is carried out on the calcium ions and silicate radicals and carbonate radicals in pore liquid, and hydrated calcium silicate and calcium carbonate precipitates are generated to fill the cracks; meanwhile, the polymer is released again to enter the next cycle, and multiple times of self-repairing are achieved. The prepared anti-seepage concrete is high in anti-seepage grade, large in repairing depth, capable of effectively self-repairing for multiple times, easy in raw material obtaining, simple and convenient in process, controllable in cost and suitable for important engineering structures with high anti-seepage requirements such as underground engineering, tunnels, water conservancy dams and ocean platforms.

This invention discloses a stress-resistant and yield-increasing plant growth regulator, its preparation method, and its application, belonging to the field of plant growth regulators. The stress-resistant and yield-increasing plant growth regulator of this invention comprises the following raw materials: *Suaeda salsa* extract, a stress-resistant biostimulant, propionyl brassinolide, styracil, polyaspartic acid, γ-aminobutyric acid, emulsifier, penetrant, co-emulsifier, pH buffer, and deionized water; wherein the stress-resistant biostimulant is perilla lactone. This invention significantly improves the tolerance of wheat to salt-alkali stress by strengthening the antioxidant system and osmotic regulation capacity, ensuring its basic survival and normal physiological functions; and effectively reverses stress-induced growth inhibition through mechanisms such as promoting root development, enhancing photosynthesis, and driving product translocation to grains, thereby achieving a significant yield increase under adverse conditions.

The invention provides a cosmetic composition and a preparation method thereof. In particular, the cosmetic composition comprises: a linear saturated dicarboxylic acid having 4 to 10 carbon atoms; mandelic acid or a derivative thereof; and polyaspartic acid or a derivative thereof. The cosmetic composition according to the technical scheme of the invention contains higher content of straight-chain saturated dicarboxylic acid with 4-10 carbon atoms, and has excellent cutin removal and acne inhibition effects when azelaic acid is used as the straight-chain saturated dicarboxylic acid with 4-10 carbon atoms.

This invention belongs to the field of heavy metal pollution remediation technology, and relates to the preparation and application of a cadmium passivating agent for weakly alkaline soil. The weakly alkaline soil cadmium passivating agent mainly comprises the following components by weight: 30-50 parts of a mineral complex, 40-60 parts of a bioactive component, and 5-15 parts of an auxiliary stabilizer. The mineral complex includes natural sepiolite, calcium-based bentonite, and a polyether-polyester diblock copolymer; the bioactive component includes microbial agents, phosphorus-modified biochar, lecithin, and phosphatidylserine; and the auxiliary stabilizer includes nano-hydroxyapatite and a chitosan-grafted polyaspartic acid complex. This weakly alkaline soil cadmium passivating agent exhibits excellent remediation effects on cadmium in contaminated soil, effectively preventing or reducing the entry of cadmium and other heavy metals into the food chain, and has significant market potential.

The invention discloses a biomass waste-based compost fertilizer for improving saline-alkali soil and a preparation method thereof, and belongs to the technical field of fertilizer preparation, the compost fertilizer comprises the following raw materials: a biomass waste basic mixture, charcoal, desulfurized gypsum, zeolite powder, hydroxyapatite, sodium lignin sulfonate, EDTA-metal chelate and polyaspartic acid; the biomass waste base mixture comprises animal waste, crop straw and agricultural product processing by-products. On the basis of a biomass waste resource utilization concept, the compost fertilizer with a multi-mechanism synergistic effect is constructed through precise compatibility of components such as the biochar, the desulfurized gypsum, the zeolite, the hydroxyapatite, the natural polymer and the metal chelate and optimization of a two-stage fermentation and aging process, and aims to break through the bottleneck of the prior art. An innovative solution is provided for green and sustainable improvement of the saline-alkali soil.

The invention discloses saline-alkali-resistant water-soluble pesticide fertilizer powder and a preparation method thereof. The powder is prepared from a modified humic acid polyaspartic acid composite carrier, a water-soluble pesticide active ingredient included by hydroxypropyl-beta-cyclodextrin, chelated medium trace elements, saline-alkali-resistant functional bacterial powder, a pH buffer aid and water-soluble inorganic nutrients. The composite carrier is prepared by cross-linking the composite carrier with calcium polyaspartate after being subjected to alkaline hydrolysis and oxidation of weathered coal, the functional bacterial powder is prepared by compounding salt-tolerant bacillus and pseudomonas in a specific ratio, and the pH buffer aid and the medium trace elements are all precise compounding systems. The preparation method comprises the steps of modified humic acid solution preparation, composite carrier synthesis, material mixing, crushing and sieving. All the components have a synergistic effect, and the saline-alkali soil conditioner has the functions of saline-alkali resistance, nutrient supply and pest control, and is good in water solubility, high in nutrient utilization rate, stable in pesticide effect, simple and controllable in preparation process, suitable for saline-alkali soil crop planting and high in practicability.

The invention relates to the technical field of cable protection layers, in particular to a corrosion-resistant underground cable protection layer and a preparation method thereof. The corrosion-resistant underground cable protection layer comprises 75-82 parts of high-density polyethylene, 10-15 parts of an ethylene-tetrafluoroethylene copolymer, 4-6 parts of a compatibilizer, 10-15 parts of glass fibers, 1-3 parts of calcium stearate, 5-10 parts of a dopamine modified filler, 5-10 parts of aminated boron nitride, 1-4 parts of a waterproof agent, 6-10 parts of a flame retardant and 2.5-3 parts of an antioxidant. The dopamine modified filler comprises dopamine modified polyaspartic acid and dopamine modified zinc oxide. According to the invention, the high-density polyethylene and the ethylene-tetrafluoroethylene copolymer are taken as a matrix and are matched with the dopamine modified filler, so that the underground cable protection layer is endowed with excellent acid and alkali corrosion resistance. And by adding aminated boron nitride and glass fiber, the mechanical strength is further improved, and the service life of the cable protection layer is remarkably prolonged.

This invention relates to a dynamic circulating gradient adsorption process and system for gold extraction from precious metal solutions, comprising: separating the precious metal solution into high, medium, and low grades; targeted calcium ion inhibition and synergistic scale inhibition treatment, which involves adding a composite agent of polyaspartic acid, sodium citrate, and carboxymethyl chitosan to the different grades of precious metal solutions to form soluble and stable complexes of free calcium ions in each solution, preventing scaling; and cross-group dynamic carbon circulating gradient adsorption, in which different grades of precious metal solutions are transferred to corresponding adsorption tower groups at different flow rates for activated carbon adsorption, and gold-loaded carbon is circulated across groups during adsorption to improve adsorption efficiency and shorten the adsorption cycle. The system includes multiple heap leaching fields, each connected to a No. 1, No. 2, and No. 3 precious metal solution pipe. This invention significantly improves the gold recovery rate from precious metal solutions, optimizes adsorption efficiency, and provides an efficient, economical, and environmentally friendly solution for heap leaching gold extraction.

This invention belongs to the field of coatings and proposes a solvent-free coating and its preparation method. The raw materials include component A and component B in a mass ratio of 1:1. By mass parts, component A comprises: 45-60 parts polyester polyol, 25-35 parts polyether polyol, 6-10 parts polyaspartic acid ester resin, 2-3 parts epoxy resin, 6-8 parts titanium dioxide, 2-5 parts mica powder, 0.3-1 parts dispersant, 0.3-1 parts dehydrating agent, 0.6-1.3 parts catalyst, and 2-3 parts coupling agent. Component B consists of hexamethylene diisocyanate-based biuret polyisocyanate and dicyclohexylmethane diisocyanate in a mass ratio of 1.5-2:1. This polyurethane coating exhibits good aging resistance, no solvent evaporation, and is environmentally friendly.

The invention relates to the field of hydrophobic antifouling engineering wear-resistant materials, in particular to a preparation method of a wear-resistant multifunctional protective organosilicone-modified bi-crosslinked polyurethane (urea) coating, which comprises the following steps: (1) reacting polytetrahydrofuran (PTMEG), castor oil (CO) and isophorone diisocyanate (IPDI), (2) introducing HO-PDMS-OH, and (3) reacting to obtain the wear-resistant multifunctional protective organosilicone-modified bi-crosslinked polyurethane (urea) coating. (3) carrying out a reaction on a polyurethane (urea) prepolymer (PPAE), polyaspartic acid ester and a hexamethylene diisocyanate tripolymer (HDI tripolymer); the prepared coating has excellent wear resistance and multifunctional protective property, and the hydrophobic antifouling property, adhesive force, wear resistance and the like of the polyurethane (urea) coating are improved on the basis of original high strength by introducing HO-PDMS-OH and adopting a double-crosslinking curing strategy.