896 results about "Polyaspartic acid" patented technology

The invention discloses a green phosphorus-free and nitrogen-free corrosion and scale inhibitor, and relates to the technical field of energy-saving and environment-friendly water treatment agents. The corrosion and scale inhibitor is prepared from polyaspartic acid, hydrolytic polymaleic acid, acrylic acid / hydroxypropyl acrylate copolymer, polyepoxysuccinic acid, delta-valerolactam, sodium borate, zinc sulfate heptahydrate and benzotriazole according to a specific proportion. The preparation method comprises the following steps: preparing the modified polyaspartic acid, adding other components, mixing the modified polyaspartic acid and other components, adjusting the pH value, homogenizing, filtering, filling and the like. The corrosion and scale inhibitor has excellent corrosion and scale inhibition performance, the corrosion inhibition efficiency of the corrosion and scale inhibitor reaches up to 88.6%, and the scale inhibition rate ranges from 90.5% to 92.4%. Compared with a contrast agent, the efficient corrosion and scale inhibition performance is provided, meanwhile, the water treatment agent has the advantages of being environmentally friendly, economical and the like, and is a green water treatment agent with great application prospects.

Provided are a nanocomposite polyurethane coating for aviation and a preparation method therefor. The coating is a product obtained by mixing a polyaspartic acid ester resin as a raw material with a fluorine-modified nano-SiO2 containing an active amine group and a fluorocarbon resin and reacting same. The nanocomposite polyurethane coating for aviation solves the problems of poor stain resistance, difficulty in cleaning, and poor toughness of existing aircraft skin coatings, and improves the toughness and ease of cleaning of the coating.

The invention discloses a corrosion inhibition type grey water scale inhibition dispersant and a preparation method thereof, belongs to the technical field of grey water dispersants, and aims to solve the problems of unstable scale inhibition performance and non-lasting scale inhibition efficiency of a grey water scale inhibition dispersant in the prior art. The technical problem that certain anti-corrosion and corrosion inhibition performance needs to be added to industrial grey water scale inhibition dispersants is urgently needed to be solved. The preparation method comprises the following steps that styrene, acrylamide and acrylic acid serve as raw materials, a polymer wall material is prepared, polyaspartic acid, a modified corrosion inhibitor and vanillin modified chitosan react, a core material is obtained, the core material and the wall material are prepared through a composite coacervation method, and the corrosion inhibition type grey water scale inhibition dispersing agent is obtained. The corrosion inhibition type grey water scale inhibition dispersant prepared by the invention has the advantages of stable and lasting scale inhibition effect and corrosion inhibition.

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 preparation method of a high-hardness and high-sulfate-radical water quality scale inhibitor, and belongs to the technical field of water treatment.The preparation method comprises the steps that sodium carboxymethyl cellulose-sulfur quantum dots are prepared by using carboxymethyl cellulose as a stabilizer and then subjected to a copolymerization reaction with 2-acrylamido-2-methylpropanesulfonic acid and itaconic acid, and the high-hardness and high-sulfate-radical water quality scale inhibitor is obtained. The preparation method comprises the following steps: carrying out a reaction on sodium carboxymethyl cellulose and sulfur quantum dots to obtain modified sodium carboxymethyl cellulose-sulfur quantum dots, and carrying out a reaction on polysuccinimide, 4-amino phthalic acid and 2-aminoethanesulfonic acid to obtain a polyaspartic acid derivative; the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative are mixed to serve as the scale inhibitor, the scale inhibition rate of the scale inhibitor is remarkably increased through the synergistic effect of the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative, and meanwhile, due to the fact that a large number of new hydrogen bonds are generated between the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative, the scale inhibition rate of the scale inhibitor is increased. The stability of a polymer structure is improved, so that the temperature resistance of the scale inhibitor is improved. The scale inhibitor is green and environment-friendly, and has excellent scale inhibition efficiency on high-hardness and high-sulfate-radical water.

The invention discloses a cold-rolled silicon steel thin strip and a processing method thereof, and relates to the technical field of silicon steel strips. According to the method, the silicon steel plate is cold-rolled into the ultrathin silicon steel strip, then the ultrathin silicon steel strip is subjected to activating treatment through the activating solution and then coated with the anti-corrosion coating, and the prepared ultrathin silicon steel strip has good corrosion resistance. According to the invention, phytic acid and modified polyaspartic acid are added into an activating solution. According to the iron-based organic framework material, polysuccinimide is used as a raw material, dopamine is added for grafting modification, a polymer which takes polyaspartic acid as a framework and is grafted with dopamine is obtained, the dopamine has a catechol group, and the chelating property of the polyaspartic acid to metal ions on the iron-based organic framework material is further enhanced. And meanwhile, phytic acid is added into the activating solution, the phytic acid and the modified polyaspartic acid can form a nano-porous structure, loading of subsequent modified silica sol is facilitated, and therefore the corrosion resistance of the ultra-thin silicon steel strip is further enhanced.

The invention relates to a composite coating based on modified polyaspartic acid ester, a terrace system and a construction method of the terrace system, and belongs to the technical field of terrace coatings. The composite coating provided by the invention comprises a bottom layer coating, a middle layer coating and a surface layer coating, the prime paint comprises the following components: specific organic silicon modified polyaspartic acid ester prime coat resin; the component of the middle-layer coating comprises specific polyaspartic acid ester floating coat resin; and the component of the surface layer coating comprises specific imide modified polyaspartic acid ester surface coating resin. The invention also provides a terrace system formed after construction of the composite coating, the terrace system has the advantages of crack resistance, compression resistance, moisture resistance, skid resistance, high adhesion, high strength, high wear resistance, yellowing resistance, long service life and the like, does not contain a solvent, avoids environmental pollution caused by volatilization, can keep excellent performance for a long time when being used for outdoor pavements, and has a wide application prospect. The problems of poor applicability, bubbling cracking, yellowing and the like of the existing floor coating in an outdoor severe environment are solved, the application range is wide, and the application value is high.

A method of formulating novel humic material is disclosed comprising mixing one or more portions of Dimethylphenylpiperazinium (DMPP) with one or more portions of N-(N-butyl) thiophosphoric triamide (NBPT) with one or more portions of Isobutylidene-diurea (IBDU) with one or more portions of Polyaspartic Acid with one or more portions of Chitosan and a portion of Mycorrhizae and Rhizobia to form a portion of biostimulant material; obtaining a portion of seaweed harvest and crushing and drying said portion of seaweed to form a portion of seaweed powder; Obtaining a portion of leonardite and crushing said portion of leonardite to form a portion of humic raw material; mixing one or more portion of animal manure with one or more portion of stover with one or more portion of organic waste to form a portion of compositing mix and composting said compositing mix to form a portion of composted material; obtaining a portion of plant waste and subjecting said portion of plant waste through an anaerobic combustion to form a portion of bio char; mixing said portion of bio char with said portion of composted material with said portion of humic material to form a portion of humic processed material; adding a portion of artificial taggant to said humic processed material to form tagged humic material; mixing said tagged humic material with said portion of biostimulant material to form a portion of biostimulant humic material; adding a taggant to said portion of biostimulant humic material to form a portion of tagged biostimulant humic material; mixing one or more portion of phosphorus with a portion of potassium and a portion of nitrogen and a portion of trace minerals to form portion of raw fertilizer; mixing said portion of raw fertilizer with said portion of tagged biostimulant humic material to form a portion of tagged fertilized biostimulant humic material.

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 the technical field of scale and corrosion inhibitors, in particular to a preparation method and application of an enhanced boric acid efficient environment-friendly phosphorus-free scale and corrosion inhibitor, and the enhanced boric acid efficient environment-friendly phosphorus-free scale and corrosion inhibitor comprises the following components in parts by weight: 50-100 parts of a water-soluble polyol-boric acid mixture, 0-50 parts of polyepoxysuccinic acid, 0-50 parts of polyaspartic acid, 0-50 parts of benzotriazole and 0-50 parts of zinc chloride. The high intermiscibility of polyhydric alcohol, water and boric acid is utilized, the dosage of boric acid in a solution is effectively increased, the effects of boric acid on scale inhibition, corrosion inhibition, sterilization and the like are amplified, meanwhile, the freezing temperature of the scale and corrosion inhibitor is reduced due to the addition of polyhydric alcohol, the scale and corrosion inhibitor can be used in winter more easily, and the scale and corrosion inhibitor is suitable for popularization and application. The invention provides an implementation way of a novel efficient environment-friendly phosphorus-free scale and corrosion inhibitor, and the scale and corrosion inhibitor has the advantages of environment friendliness, convenience in use and good scale and corrosion inhibition performance.

To provide a thickening composition which simultaneously achieves both a refreshing tactile when applied to the skin and a thickening effect and a cosmetic composition containing the same.SOLUTION: There is provided a thickening composition comprising a component (a) and a component (b). The component (a) is a polyamino acid derivative containing a repeating unit represented by the following general formula (1) and the component (b) is a compound having a hydrophobic group. (In the formula, R1 contains at least a hydrocarbon group having 3 to 22 carbon atoms, and R2 contains at least a hydrocarbon group having 1 to 20 carbon atoms which may contain a heteroatom. n and m represent the number of moles of α- or β-polyaspartic acid monomer units A-U and B-U in the molecule, respectively. In the polyamino acid derivative, the bonding form of the monomer unit A-U and the monomer unit B-U may be any of a random form, a blocked form or a tapered form.)SELECTED DRAWING: None

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 a fertilizer synergistic composition, a special corn fertilizer and a preparation method thereof, and belongs to the technical field of fertilizers. The fertilizer synergistic composition comprises the following components in percentage by weight: 0.6%-5.0% of polyaspartic acid, 1.2%-4.0% of polyacrylamide, 0.3%-2.0% of a nitrification inhibitor and the balance of zeolite powder. The invention also provides a special corn fertilizer containing the fertilizer synergistic composition. The polyacrylamide in the composition provided by the invention can improve the soil structure, increase the porosity and air permeability of the soil, improve the water retention capacity of the soil and reduce the permeability of the soil, so that the fertility of the soil and the yield of crops are improved. According to the fertilizer synergist, the utilization degree of a fertilizer is increased, the release speed of the fertilizer is controlled, and the fertilizer can act for a long time.

The present invention relates to the technical field of biodegradable sheets, and specifically discloses a bamboo crystal fiber filled biodegradable sheet, wherein the raw materials include by mass: 40-60 parts of polylactic acid, 10-20 parts of polybutylene adipate / terephthalate, 40-60 parts of bamboo, 1-5 parts of polyvinyl alcohol, 10-20 parts of glycerol, 1-5 parts of polyaspartic acid, 0.01-0.1 parts of 1-ethyl-(3-dimethylaminopropyl)carbodiimide, 0.01-0.02 parts of 1-hydroxybenzotriazole, 1-2 parts of chitosan, 1-3 parts of antioxidant, 1-3 parts of nucleating agent, 1-3 parts of coupling agent, 1-3 parts of dispersant, and 2-4 parts of talcum powder. The present invention also discloses a preparation method of the above-mentioned bamboo crystal fiber filled biodegradable sheet. The sheet obtained by the present invention has good mechanical properties, excellent aging resistance, and is easily degraded after being abandoned. After 72 days of degradation, its degradation rate can reach more than 60.5%.

The invention provides a green compound scale inhibitor for geothermal fluid. The compound scale inhibitor comprises modified polyaspartic acid, high-hydrolysis polymaleic anhydride, polyepoxysuccinic acid and polyacrylic acid. According to the environment-friendly compound scale inhibitor for the geothermal fluid, the modified polyaspartic acid, the high-hydrolysis polymaleic anhydride, the polyepoxysuccinic acid and the polyacrylic acid are compounded, a good synergistic effect is achieved, scale inhibition is achieved through chelation solubilization and lattice distortion, the scale inhibition advantage in actual geothermal water is obvious, and the environment-friendly compound scale inhibitor has a good actual popularization value.

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 present invention provides a soil conditioner and a preparation method and application thereof, belonging to the technical field of soil conditioners. The soil conditioner of the present invention comprises the following raw materials in parts by weight: 70 to 90 parts of modified pig manure biochar, 8 to 15 parts of polyaspartic acid, 5 to 10 parts of potassium titanium oxalate, 1 to 3 parts of ammonium molybdate, 40 to 60 parts of calcium silicate, and 20 to 30 parts of lime. The present invention uses a mixed modifier to modify pig manure biochar, which can greatly reduce the content of cadmium and arsenic in edible parts. In addition, the raw materials in the soil conditioner cooperate with each other to reduce the content of heavy metals in the edible parts to the greatest extent.

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 provides charcoal seed gel for saline-alkali soil vegetation restoration and a preparation method and application thereof, and belongs to the technical field of vegetation restoration. The biochar seed gel comprises water retention gel, effective nutritional ingredients and a structure maintenance agent, the water retention gel is polyacrylamide, the effective nutritional ingredients comprise a bacillus subtilis microbial agent, brassin, chitosan oligosaccharide, polyaspartic acid and a compound fertilizer, and the structure maintenance agent comprises biochar, clay, chitosan and saponin powder. The biochar seed gel forms a microenvironment on the surface of the soil, stress of a high-salt environment of the soil is reduced, and the gel is relatively high in water retention capacity, so that water is favorably maintained for growth of the seeds and seedlings, and a water shortage phenomenon caused by soil hardening is relieved.

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 temperature change resistant glass material and a preparation method thereof, and relates to the field of glass. When the temperature change resistant glass material is prepared, crystal whisker silicon is soaked in an aluminum hydroxide solution, and then the crystal whisker silicon, nano silicon dioxide, lithium oxide, sodium carbonate and titanium dioxide are heated, mixed and annealed to prepare glass; the preparation method comprises the following steps: sequentially reacting aluminum oxide with 3-aminopropyltrimethoxysilane, 4-bromo-2-hydroxybenzaldehyde and 4-aminopyridine, so as to prepare functionalized aluminum oxide; the preparation method comprises the following steps: carrying out a reaction on polyaspartic acid ester resin, a hexamethylene diisocyanate-based polyisocyanate tripolymer, a functional monomer and an end-capping reagent to prepare modified polyurea; and mixing the modified polyurea with the functionalized aluminum oxide to prepare a coating material, spraying the coating material on the surface of glass, and drying to prepare the temperature-change-resistant glass material. The temperature-change-resistant glass material prepared by the invention has the capabilities of fouling prevention, heat conduction, impact resistance, coating self-repairing and aging resistance.

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 provides a copper material yellowing and brightening cleaning agent. The copper material yellowing and brightening cleaning agent comprises the following raw material components in percentage by weight: 3-18% of a surfactant, 2-10% of a chelating agent, 1-10% of a nitrogen-containing polymer, 1-3% of polyaspartic acid, 1-4% of a polyhydroxy additive and the balance of water. The copper material yellowing and brightening cleaning agent can clean various dirt such as processing oil, dust, fingerprints and the like on the surface of a copper material, thoroughly remove a corroded heterochromatic layer and recover a bright surface, is safe and non-corrosive to a copper base material, does not influence the dimensional precision, and can be used for cleaning copper precision parts, and the cleaned workpiece is not easy to oxidize and discolor again. The copper material yellowing and brightening cleaning agent provided by the invention is safe to human bodies and the environment, wastewater treatment is easy, and the preparation process is simple and convenient.

The invention relates to the field of polyurethane materials, in particular to polyurethane for a doffing disc and a preparation method of the polyurethane. The polyurethane for the doffing disc is prepared from the following raw materials: long-chain polyol, diisocyanate, an alcohol chain extender, an amine chain extender, an antioxidant and a wear-resistant additive. Wherein the amine chain extender comprises polyaspartic acid ester. The DIN abrasion rate of the prepared polyurethane material is lower than 15%, the strength retention rate is larger than 80%, and the polyurethane material is particularly suitable for being used as a doffing disc in outdoor cotton picking operation.

The invention discloses a process for repairing damaged soil ecology by lincomycin waste liquid fertilizer, and relates to the technical field of soil remediation, which comprises the following specific steps: step 1, screening and culturing microbial decomposition flora, the invention has the following advantages: through the chelation of the polyaspartic acid derivative on metal ions and the promotion effect on nutrient absorption, the release and transmission of nutrients are precisely regulated and controlled, so that crops can absorb and utilize the nutrients more efficiently; the nano composite material and the specific biological stimulant containing various beneficial microbial strains and natural plant extracts are jointly fused into the liquid fertilizer, the microbial strains in the specific biological stimulant activate the soil biological environment, the natural plant extracts assist plant growth to resist diseases, and the nano composite material and the natural plant extracts have a synergistic effect, so that the liquid fertilizer has a good application prospect. Physicochemical properties and biological activity of soil are optimized, excellent soil micro-ecology is created for plant growth, healthy and strong growth of plants is promoted, and restoration of damaged soil is enhanced.