40 results about "Mercaptobenzothiazole" patented technology

This invention discloses an analytical method for benzothiazole contaminants, comprising the following steps: detection by high performance liquid chromatography (HPLC), with the following chromatographic conditions: a phenylhexyl column as the stationary phase, mobile phase A being water, mobile phase B being acetonitrile, and gradient elution; wherein the benzothiazole contaminants are at least one of 2-aminobenzothiazole, 2-hydroxybenzothiazole, benzothiazole, 2-methylbenzothiazole, 2-mercaptobenzothiazole, 2,5-dimethylbenzothiazole, 2-cyanobenzothiazole, ethyl 2-carboxylate benzothiazole, 2-chlorobenzothiazole, 2-bromobenzothiazole, 2-methylthiobenzothiazole, phenylthiocyanate, N-tert-butyl-2-benzothiazole sulfenamide, 2-(2-hydroxyphenyl)-benzothiazole, N-cyclohexyl-2-benzothiazole sulfinamide, dibenzothiazole disulfide, and N,N-dicyclohexyl-2-benzothiazole sulfonamide.

The invention discloses oxidized paraffin and antirust wax and a preparation method thereof, and relates to the field of paraffin. The antirust wax comprises oxidized paraffin, an emulsifier, an antirust agent and water, and the emulsifier is at least one of sorbitan monooleate, lauryl sodium sulfate and fatty alcohol-polyoxyethylene ether; the antirust agent is at least one of cyclohexylamine stearate, alkenyl succinic acid and alpha-mercaptobenzothiazole; the oxidized paraffin is loaded with a Mn metal element through a carrier. The catalyst loaded with the active component Mn is added in the preparation process of the oxidized paraffin, the acid value and the soap value of the oxidized paraffin are effectively increased, the oxidized paraffin interacts with the specific emulsifier and the antirust agent, the emulsifier does not affect the anti-oxidation protection function of functional components, and meanwhile, the antirust agent and the oxidized paraffin cooperate with each other to achieve the anti-corrosion effect in a synergistic mode; and the antirust capability of metal in a humid and hot environment and an acid-base environment is improved, and the application prospect is expanded.

The application provides a preparation method of an oxygen-containing carotenoid, in particular a preparation method of canthaxanthin (I-a) or astaxanthin (I-b), and the preparation method comprises the following steps: (1) C15-alcohol (II) is reacted with 2-mercaptobenzothiazole (MBT) to prepare C15-benzothiazole sulfide (III), and the C15-benzothiazole sulfide (III) is further oxidized to prepare C15-benzothiazole sulfone (IV); (2) the C15-benzothiazole sulfone (IV) is coupled with C10-dialdehyde (V) to prepare the target product: canthaxanthin (I-a) or astaxanthin (I-b); the method has low raw material cost, avoids the use of phosphorus salt in the traditional synthesis route, and the by-product 2-hydroxybenzothiazole is an important intermediate for synthesizing the herbicide thiobencarb, and also has economic benefits; and the method provides an efficient, economical and environmentally-friendly solution for large-scale clean production of canthaxanthin and astaxanthin.

The application discloses a rubber accelerator 2-mercaptobenzothiazole tellurium and a preparation method and application thereof. The 2-mercaptobenzothiazole and the tellurium dioxide are respectively dissolved in solvents to obtain a tellurium dioxide solution and a 2-mercaptobenzothiazole solution; the tellurium dioxide solution is dropped into the 2-mercaptobenzothiazole solution, and a rubber accelerator 2-mercaptobenzothiazole tellurium is obtained by reaction under stirring. The preparation method is simple in operation, has few side reactions and can be carried out at room temperature. The rubber accelerator 2-mercaptobenzothiazole tellurium prepared has a medium speed and is superior to existing thiazole accelerators (M and DM) and selenothiazole accelerators (SeM) in performance.

The invention discloses a vegetable oil-based high-lubrication environment-friendly cutting fluid and a preparation method thereof, and belongs to the technical field of metal working fluids. The cutting fluid is prepared from the following components in parts by mass: 18-25 parts of compound vegetable oil, 8-15 parts of compound organic acid, 0.3-0.8 part of colloidal graphite, 0.2-0.6 part of boron-molybdenum-rare earth friction modifier, 5-10 parts of amino-acid ester antirust agent, 4-10 parts of pH response type bifunctional vegetable oil amide, 1-2 parts of cosolvent, 10-16 parts of triethanolamine, 1-3 parts of bactericide and the balance of deionized water, wherein the total mass of the cutting fluid is 100 parts. A mercaptobenzothiazole extreme pressure functional group and a carboxyl pH response switch are covalently bonded to a vegetable oleic acid skeleton, so that a single molecule simultaneously has environment sensing and powerful film forming functions. The molecules are stably dispersed in an alkaline environment of the cutting fluid, instantaneous conformation overturning is carried out in a local acid micro-area of a friction interface, extreme pressure groups are exposed and chemically adsorbed with a metal surface, and a dynamic reversible self-repairing lubricating film is formed.

The application belongs to the technical field of paint preparation, and provides polyester resin powder paint with high salt mist corrosion resistance and a preparation method thereof.The powder paint is composed of a carboxyl functional polyester resin, a hydroxyalkylamide curing agent and / or trisglycidyl isocyanurate to form a film forming system, and is matched with titanium dioxide, inorganic fillers, acrylate leveling agent, benzoin and wax powder;quaternary ammonium poly-p-vinyl pyridine microgel is introduced into the paint, and double-particle-size microcapsules are added;the microcapsule core layer contains hydroxyl-terminated polydimethylsiloxane, mercaptobenzothiazole corrosion inhibitor components, polycarbodiimide and phthalate plasticizer, the shell layer is a polyurea inner shell and a polydopamine outer shell and contains a disulfide bond structure, an epoxy silane hydrolysis and condensation layer is arranged on the outer layer and loads the microgel.

The application discloses a kind of corrosion-resistant magnesium alloy material and preparation method thereof, it is related to alloy material technical field.The application is when preparing corrosion-resistant magnesium alloy material, pure magnesium, pure zinc, pure aluminum, magnesium gadolinium intermediate alloy and magnesium calcium intermediate alloy are fused and refined to obtain as-cast magnesium alloy;As-cast magnesium alloy is sequentially subjected to solid solution treatment, aging treatment, is extruded and is spun to obtain fine-grained magnesium alloy;After fine-grained magnesium alloy is cut and sampled, micro-arc oxidation is carried out, and then treated by 3-aminopropyl triethoxysilane alcoholysis solution to obtain pretreated magnesium alloy;Urea, formaldehyde are wrapped 2-mercapto benzothiazole to carry out in-situ polymerization to prepare corrosion-inhibiting microcapsule;Dimethyl imidazole, corrosion-inhibiting microcapsule and epoxy resin are spin-coated on the surface of pretreated magnesium alloy to prepare corrosion-resistant magnesium alloy material.The corrosion-resistant magnesium alloy material prepared by the application has excellent corrosion resistance, tensile strength and wear resistance.

The present application relates to a kind of composite reverse osmosis membrane acidic cleaning agent, preparation method and cleaning process, belong to environmental protection water treatment technical field.The cleaning agent contains 4~8% inorganic acid, 20~40% organic acid, 1~3% surfactant, 0.5~1% chelating agent, 0.5~1% composite corrosion inhibitor by mass percentage, and the balance is deionized water.Composite corrosion inhibitor is compounded by 2-mercaptobenzothiazole etc.according to specific mass ratio, and the molecular weight of polyaspartic acid is 5000, and the molar ratio of Zn:Mo in zinc-molybdate complex is 2:1.The preparation method is divided into four steps, first, composite corrosion inhibitor premix is prepared, then acidic base fluid is prepared, then each component is added in turn, and finally cleaning solution is obtained.Cleaning process mixes cleaning agent with deionized water, and is cleaned through specific process, membrane flux recovery rate is ≥85%, can effectively clean reverse osmosis membrane, and restore its performance.

This invention discloses a composite sealant for metal artifacts and its preparation and application method, comprising a base sealant and a top sealant. The base sealant comprises 20-40 parts by weight of a film-forming substance, 0.5-5 parts by weight of a composite corrosion inhibitor, and 55-79 parts by weight of a first solvent. The composite corrosion inhibitor comprises benzotriazole and 2-mercaptobenzothiazole, with a mass ratio of benzotriazole to 2-mercaptobenzothiazole of 1:0.2-1:5. The top sealant comprises 20-40 parts by weight of a film-forming substance, 1-10 parts by weight of nano-silica, 0.5-5 parts by weight of a hydrophobic modifier, and 45-78 parts by weight of a second solvent. This invention achieves efficient and durable protection for metal artifacts through the synergistic combination of benzotriazole and 2-mercaptobenzothiazole in the base sealant, exhibiting advantages such as good water resistance, strong salt spray corrosion resistance, high transparency, and good reversibility.

To provide a curable silicone composition excellent in salt water resistance and uniformity, and a compound capable of imparting excellent salt water resistance and uniformity to the curable silicone composition.SOLUTION: The present invention relates to a curable polyorganosiloxane composition containing (A) a polyorganosiloxane having two or more hydrolyzable groups bonded to a silicon atom in one molecule, (B) a curing catalyst, and (C) a compound containing a mercaptobenzothiazolyl group and one or more selected from the group consisting of a hydrolyzable group bonded to a silicon atom and a siloxane chain in one molecule, and the component (C).SELECTED DRAWING: None

The application discloses a preparation method of arbutin, and the preparation method comprises the following steps: (1) C5-halogenated ester (II) is reacted with 2-mercaptobenzothiazole (MBT) to generate C5-BT (III), and C5-BT (III) is further oxidized to prepare C5-BTS (IV); and (2) C5-BTS (IV), C15-BTS (V) and C10-dialdehyde (VI) are coupled to prepare arbutin (I), and the specific route can be C5+C10→C15, C15+C15→C30, or C15+C10→C25, C25+C5→C30; the method has low raw material cost, avoids the use of phosphorus salt in a traditional synthesis route, and provides an efficient, economical and environmentally-friendly solution for large-scale clean production of arbutin.

The invention provides an anti-corrosion and flame-retardant integrated functional filler, a coating and a preparation method. The preparation method comprises the following steps: synthesizing a layered double hydroxide (LDH) precursor by adopting a coprecipitation method; the LDH precursor is dispersed in a mixed solution containing cobalt salt, 2-methylimidazole and 2-mercaptobenzothiazole MBT, and the zeolite imidazate framework material ZIF-67 loaded with the MBT grows on the surface of the LDH in situ. According to the invention, the corrosion resistance and flame retardant property of the epoxy coating can be effectively improved, and the dispersity of the composite filler in the epoxy coating is improved.

The invention discloses an antioxidant lithium battery copper foil and a preparation method thereof, and relates to the technical field of current collector preparation. The anti-oxidation liquid has a corrosion inhibition effect on copper, mercaptobenzothiazole and sodium molybdate can be in bridge connection with metal copper ions through chemical bonds and can be adsorbed on the surface of a metal copper layer, a compact and uniform organic protective film is formed on the copper surface under the participation of triethanolamine, the permeability of oxygen or water can be reduced, the copper surface can be effectively prevented from being oxidized, and the corrosion resistance of the copper surface is improved. The anti-oxidation liquid does not contain zinc ions or chromium and other elements, so that the performance and safety requirements of high-end lithium battery manufacturers can be met; the anti-oxidation liquid in the invention is colorless, does not need to be squeezed by an extrusion roller for cleaning, can be directly washed by water, has no liquid medicine residue on the surface of the foil, can effectively improve the abnormal appearance such as floating and whitening of the composite copper foil, has no different color on the film surface after high-temperature baking, can effectively improve the product quality and the product performance, and further improves the stability of the composite current collector; the service life and the safety performance of the battery are improved.

The invention relates to the technical field of etching solutions, and discloses a multilayer copper-molybdenum etching solution for the LED field, which comprises the following components by mass percent: 5.5-7.5% of sodium perborate; 6%-8% of hydrogen peroxide; 6%-7% of triammonium phosphate; 1%-2% of citric acid; 1%-2% of sodium citrate; 1.0% to 1.5% of iminodiacetic acid; 0.05%-0.1% of tin sulfate; 0.30%-0.45% of a dipotassium hydroxyethylidene-1, 1-diphosphonate solution; 0.08%-0.10% of sodium nitrite; 0.2% to 0.4% of water-soluble mercaptobenzothiazole; 0.02% to 0.05% of ethoxylated acetylene glycol; 0.02% to 0.05% of diethylene triamine pentamethylene phosphonate; and the balance of ultrapure water. A combination of sodium perborate and hydrogen peroxide is adopted as an oxidation system, a composite additive, a novel metal complexing agent and a surfactant matched with the etching solution are adopted, and the multilayer copper-molybdenum etching solution which is moderate in etching rate, good in anisotropy, high in substrate material selectivity and good in chemical stability is prepared.

The invention discloses a developing solution for manufacturing an AMOLED (Active Matrix / Organic Light Emitting Diode) panel and a preparation method of the developing solution. The invention discloses a water-based metal cleaning agent which comprises the following components in percentage by weight: 2-5% of tetramethylammonium hydroxide, 0.5-5% of a composite metal protective agent consisting of at least two of 5-aminotetrazole, 2-mercaptobenzothiazole and 1-aminobenzotriazole, 0.5-3% of an organic carboxylate synergist, 1-5% of an organic solvent, 0.01-1% of a surfactant, 0.05-0.5% of a pH stabilizer, 0.001-0.1% of a metal chelating agent and the balance of ultrapure water. A preparation method of the water-based metal cleaning agent comprises the following steps: sequentially dissolving the components in a clean environment; and carrying out two-stage filtration, deoxidation (dissolved oxygen is less than or equal to 20ppb) and nitrogen-filled sealing to obtain a product with ultrahigh cleanliness (granularity is less than or equal to 25 pieces / mL). The corrosion rates of the developing solution to aluminum, silver and titanium are lower than 4 nm / min, 3.5 nm / min and 1 nm / min respectively, the performance is stable after the developing solution is stored for 30 days, the problems of multi-metal corrosion, developing residues and uniformity can be synchronously solved, and the manufacturing yield of AMOLED panels is remarkably improved.

The invention relates to the technical field of cefotaxime acid impurity control, and particularly discloses a method for controlling genotoxic impurities in cefotaxime acid. Carrying out water quenching and organic solvent extraction on reaction liquid obtained after the reaction of the 7-ACA and the AE active ester, and adjusting the pH value of the obtained water-phase feed liquid to be less than or equal to 7; and then adding a sulfur-loaded adsorbent for adsorption, carrying out solid-liquid separation, and crystallizing the obtained filtrate under an acidic condition to obtain the cefotaxime acid. According to the method provided by the invention, the existing cefotaxime acid synthesis step and crystallization step do not need to be specially set, and the content of 2-mercaptobenzothiazole in the cefotaxime acid product can be ensured to be below 3.0 ppm only by ensuring that the feed liquid before adsorption is an acidic aqueous phase solution and the content of 2-mercaptobenzothiazole in the feed liquid is below 0.5%. The method can be suitable for various cefotaxime acid synthesis processes with a water phase extraction step, is wide in application range, and can realize industrial production.

The invention belongs to the technical field of production of rubber accelerators, and particularly relates to a green production process of a rubber accelerator dibenzothiazyl disulfide (DM), which comprises the following steps: adding 2-mercaptobenzothiazole (M), Turkey red oil and water into a reaction kettle, stirring and pulping, heating to 30-80 DEG C, dropwise adding 0.5-1.5 molar weight of hydrogen peroxide, carrying out heat preservation reaction for 1-3 hours, sampling, filtering, washing, and drying to obtain the rubber accelerator dibenzothiazyl disulfide (DM). Detecting pink with cobalt oleate, and determining a reaction endpoint; dehydrating the reaction system, washing with water, drying a filter cake to obtain a DM finished product, and recycling mother liquor. The method has the advantages of simple synthesis process, low equipment requirement, few byproducts, high product yield and good purity, solves the problems of safety, environmental protection and the like of the traditional process, and reduces the cost and improves the efficiency. The novel process provided by the invention has strong market competitiveness.

The invention discloses a high-temperature and high-acid stable heavy metal chelating agent as well as a preparation method and application thereof, and belongs to the field of industrial wastewater treatment. The preparation method comprises the following steps: condensing 2, 6-diaminopyridine and o-phenylenediamine which are used as raw materials to obtain 2, 6-bis (benzimidazole-2-yl) pyridine; nitration and reduction are carried out, and amino groups are introduced; carrying out amidation reaction on the amination intermediate and 2-mercaptobenzothiazole-5-carboxylic acid, and introducing a thiol group; and carrying out nucleophilic substitution reaction on the obtained intermediate and bromohexadecane, and grafting a hydrophobic long chain to finally prepare the target chelating agent. Molecules of the chelating agent integrate a rigid heterocyclic ring, a thiol ligand and a hydrophobic chain, so that the chelating agent not only can efficiently and selectively chelate heavy metal ions under the conditions of high temperature and strong acid, but also can spontaneously gather after chelating and quickly settle through gravity to realize efficient solid-liquid separation, and has a wide application prospect.

This invention relates to a surface-modified high-efficiency AK adsorption activated carbon and its applications, belonging to the field of activated carbon technology. The activated carbon surface is co-grafted with 2-mercaptobenzothiazole and amino functional groups. The AK activated carbon is prepared by acid washing, argon-oxygen plasma activation, and then immersed in a mixed solution of ethylenediamine and epichlorohydrin to obtain aminated AK activated carbon. This is then subjected to supercritical grafting with a 2-mercaptobenzothiazole CO2 solution. This activated carbon can be used in electroplating wastewater treatment to adsorb complexed Cu. 2+ and Ni 2+ This ensures that the concentration of heavy metals in the effluent is <0.1 mg / L; in the recovery of mercury-containing hazardous waste, Hg is controlled under pH 2-6 conditions. 2+ Its adsorption rate is >99%, demonstrating high adsorption performance and broad application prospects.

The invention discloses a nanometer container with corrosion inhibitor releasing and emulsifying capacity, a preparation method and application, and relates to the technical field of material corrosion prevention. The preparation method comprises the following steps: by taking tetraethyl orthosilicate as a raw material, preparing HMSNs as a shell layer by adopting a template method under the action of ammonia water and hexadecyl trimethyl ammonium bromide; the preparation method comprises the following steps: loading 2-mercaptobenzothiazole into an HMSNs shell layer by adopting a vacuum loading method to form MBT-coated HMSNs; mBT-coated HMSNs are placed in a buffer solution, sodium dodecyl benzene sulfonate is added into the buffer solution for stirring, then polyethyleneimine is added into a mixture obtained through stirring for a reaction, MBT-coated HMSNs-coated PEI is obtained, 1, 2-epoxy octadecane is grafted to a PEI layer of the MBT-coated HMSNs-coated PEI, and the nano container is obtained. The prepared nano container can convey MBT to a corrosion area in an oil well for targeted corrosion inhibition, and meanwhile, deep oil drops can be emulsified to improve the petroleum recovery efficiency.

The application provides a low-frangibility high-resilience rubber band and a preparation method thereof, and relates to the technical field of rubber band preparation.The low-frangibility high-resilience rubber band is prepared from the following raw materials: natural rubber, sulfur, modified zinc oxide, stearic acid, 2-mercaptobenzothiazole, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, calcium carbonate and paraffin oil.The modified zinc oxide is obtained by modifying zinc oxide with a surfactant and then compounding the modified zinc oxide with functionalized silicon dioxide.The application overcomes the shortcomings of the prior art.The application uses natural rubber as a preparation base material, and based on the advantages of good elasticity and high tensile rate of the natural rubber, the modified zinc oxide is added to improve the resilience rate and balance the vulcanization crosslinking density, so that the resilience is maintained while the frangibility is reduced in a high-cold environment, and the general application value of the prepared rubber band in different environments is comprehensively improved.

This invention belongs to the field of harmless treatment and resource utilization technology of chemical hazardous waste, and in particular, it is a treatment system for 2-mercaptobenzothiazole production waste. The system includes a vacuum drying unit, a crushing unit, and a material conveying unit, as well as a composite physical separation unit connected in series downstream of the crushing unit via the material conveying unit. The composite physical separation unit includes a wind-powered separation unit and an electrostatic separation unit connected in series. The crushing unit is used to crush the solid waste into uniform granular materials. Employing a "wind-powered + electrostatic" composite physical separation technology, the system first separates the heavy phase resin residue according to density, and then separates the sulfur and organic phases in the light phase according to dielectric properties, solving the problem of resin impurities encapsulating the effective components in traditional processes. Physical pre-separation replaces a large number of chemical dissolution and acid-base neutralization steps, effectively reducing the consumption of solvents and acid / base reagents, while also reducing energy consumption in subsequent purification stages.

This invention belongs to the technical field of asphalt modification materials, specifically relating to a vulcanized natural rubber latex modified asphalt and its preparation method. It is made from the following raw materials in parts by weight: 100 parts base asphalt, 15-20 parts natural rubber latex, 0.18-0.28 parts sulfur (vulcanizing agent), 0.15-0.36 parts silica, 0.075-0.14 parts 2,6-di-tert-butyl-4-methylphenol (antioxidant), 0.09-0.16 parts zinc ethylphenyl dithiocarbamate, 0.045-0.08 parts 2-mercaptobenzothiazole, 0.075-0.14 parts zinc oxide, and 0.015-0.06 parts naphthalenesulfonate formaldehyde condensate. This invention first vulcanizes the natural rubber latex, significantly improving its elasticity, toughness, and anti-aging properties. Then, it is used for asphalt modification, ultimately producing vulcanized natural rubber latex modified asphalt with excellent low-temperature toughness and high-temperature deformation resistance.

The invention discloses a beneficiation method for copper-zinc polymetallic ore containing pyrrhotite and a collecting agent, and belongs to the field of beneficiation. The collecting agent comprises 70%-85% of dithiophosphoric acid and / or dithiophosphate; 15% to 25% of mercaptobenzothiazole salt; and 1-5% of a cosolvent. The collecting agent is suitable for copper and zinc flotation of copper-zinc polymetallic ore at the same time. The beneficiation method for the copper-zinc polymetallic ore containing the pyrrhotite comprises the technological methods of ore grinding, copper flotation, magnetic separation and regrinding to remove the pyrrhotite and zinc flotation, and the same collecting agent is adopted for copper flotation and zinc flotation. According to the method, the pyrrhotite is physically removed before zinc flotation, the defect that the pyrrhotite is activated and floats upwards in the zinc flotation operation is fundamentally overcome, and the quality of the zinc concentrate is ensured. Meanwhile, copper flotation and zinc flotation adopt the same collecting agent and have the advantages of being convenient to operate, small in influence of flotation return water on indexes and the like, and the technological process is low in beneficiation reagent cost and high in recovery rate.

The application discloses a fine line copper surface micro-etching and roughening solution and a preparation method and application thereof, and relates to the technical field of printed circuit board manufacturing. The fine line copper surface micro-etching and roughening solution comprises the following components in mass concentration: sulfuric acid 60-100 g / L, hydrogen peroxide 40-60 g / L, zinc sulfate 0.5-2 g / L, copper ions 10-30 g / L, pyridine heterocyclic Schiff base 0.5-1 g / L, ethanol 10-100 g / L, 2-mercaptobenzothiazole 1-3 g / L, methionine 1-5 g / L, and polyacrylamide 1-5 g / L. The 2-mercaptobenzothiazole and methionine in the copper surface micro-etching and roughening solution can form a honeycomb structure on the copper surface under a lower etching amount, and the zinc sulfate and the pyridine heterocyclic Schiff base can form a composite film layer with the copper ions on the surface of the honeycomb structure, so that the interlayer adhesion is improved.

The application discloses an environment-friendly agent for sewage treatment and a preparation method thereof, and belongs to the technical field of water treatment. The environment-friendly agent for sewage treatment comprises the following raw materials in parts by weight: modified cellulose 15-20 parts, layered double hydroxide 10-15 parts, diatomite 25-30 parts, 2-mercaptobenzothiazole 1-3 parts, polyaluminum chloride 20-25 parts, polydimethyl diallyl ammonium chloride 5-8 parts, and ferrous sulfate 5-8 parts, wherein the modified cellulose is subjected to double modification of quaternization and amino grafting. The environment-friendly agent for sewage treatment is innovatively compounded by the modified cellulose, the layered double hydroxide and the 2-mercaptobenzothiazole, takes diatomite as a carrier, and cooperates with other substances, so that the suspended solids in water are quickly reduced, and the COD, total phosphorus and heavy metal ions are also remarkably removed, and the sewage treatment efficiency is remarkably improved. The environment-friendly agent for sewage treatment realizes the efficient and comprehensive sewage treatment purpose, is environment-friendly, and has remarkable application value.

The invention relates to the technical field of waterproof coiled material preparation, in particular to a chemical-corrosion-resistant flexible TPO waterproof coiled material and a preparation process thereof. Comprising the following steps: preparing nanocage powder, preparing corrosion inhibition filler and preparing the chemical-corrosion-resistant flexible TPO waterproof coiled material. According to the corrosion inhibition filler prepared by the preparation method disclosed by the invention, the corrosion inhibition performance of the filler is converted into active protection from passive isolation through efficient loading and intelligent controlled release of the nano-cage on 2-mercaptobenzothiazole, and a large amount of 2-mercaptobenzothiazole molecules can be physically adsorbed by the high specific surface area and multi-stage pore channels of the nano-cage; and the magnesium-aluminum-cerium composite hydroxide of the nanocage shell is sensitive to the pH value, and when the pH value of a local microenvironment is changed due to the damage and corrosion of a waterproof layer, the accelerated release of 2-mercaptobenzothiazole can be triggered, so that the intelligent corrosion response supplied as required is realized.

The invention provides a method for recovering copper from a waste circuit board, and relates to the technical field of resource recovery. The method provided by the invention comprises the following steps: stripping electronic elements on the waste circuit board, crushing, sorting and pouring to obtain a metal plate; immersing a metal plate in the electrolyte, and performing electrolytic copper separation by taking the metal plate as an anode and stainless steel as a cathode; cuSO4 with the concentration of 1 mol / L to 3 mol / L, H2SO4 with the concentration of 0.5 mol / L to 2 mol / L, HCl with the concentration of 0.2 mol / L to 0.5 mol / L, thiourea with the concentration of 0.01 mol / L to 0.05 mol / L, gelatin with the concentration of 100 mg / L to 200 mg / L, bone glue with the concentration of 50 mg / L to 100 mg / L, glyoxylic acid with the concentration of 0.1 mol / L to 0.3 mol / L and 2-mercaptobenzothiazole with the concentration of 1 mg / L to 3 mg / L are dissolved in the electrolyte. According to the method, the deposition quality and stripping efficiency of cathode copper during electrolytic recovery of copper can be improved, and meanwhile, the recovery rate of copper can be increased.

The invention relates to the technical field of fertilizers, and provides a watermelon field planting root-promoting and seedling-strengthening fertilizer and an application method thereof. Comprising the following components in parts by weight: 150 to 200 parts of urea, 180 to 250 parts of monoammonium phosphate, 450 to 550 parts of monopotassium phosphate, 80 to 130 parts of potassium citrate, 35 to 65 parts of amino acid, 10 to 15 parts of trace elements, 30 to 50 parts of chitosan oligosaccharide, 10 to 20 parts of alginate oligosaccharide, 5 to 10 parts of an MBT (2-mercaptobenzothiazole) leaching nutrient compound, 1 to 5 parts of an MB35-5 bacillus aryabhattai leaching nutrient compound and 3 to 6 parts of polyacrylamide. The MBT leaching nutrient compound is an MBT fermented lignite extract. By means of the technical scheme, the problems that in the prior art, after watermelon field planting, root systems grow slowly, and the survival rate of field planting seedlings is low are solved.

The invention discloses a heat-engine plant pipeline descaling cleaning agent and a preparation method and application thereof, and belongs to the technical field of material scientificity, glutamic acid diacetic acid is dissolved in absolute ethyl alcohol, an acid binding agent and ethyl chloroacetate are added, esterification is performed, and glutamic acid diacetic acid tetra (ethoxycarbonyl methyl) ester is obtained; the preparation method comprises the following steps: dissolving 1-hydroxyethylidene-1, 1-diphosphonic acid in dichloromethane, and adding N, N '-dicyclohexylcarbodiimide to react with tert-butyl alcohol to obtain 1-hydroxyethylidene-1, 1-diphosphonic acid di (tert-butyl) ester; the preparation method comprises the following steps: dissolving 2-mercaptobenzothiazole and sodium hydroxide in an alcohol-water mixed solution, adding epoxy chloropropane to react, reacting with an alkaline polyaspartic acid solution to obtain mercaptobenzothiazole grafted modified polyaspartic acid, dissolving the mercaptobenzothiazole grafted modified polyaspartic acid with alkyl glycoside, adding the two esters, and stirring to react to obtain the heat-engine plant pipeline descaling cleaning agent. The two esters are introduced as double precursor components, so that different scales are distinguished, the indifference effect of active components on a whole pipeline system is avoided, and the corrosion risk to a metal base material is reduced.