49 results about "Pentamine" patented technology

The invention belongs to the technical field of chromatographic filling, and particularly relates to mesoporous silica microspheres, a preparation method and application. According to the preparation method, tetraethylenepentamine functional modified template microspheres and oligomeric silica anions generated by hydrolysis of a silicon source are subjected to an electrostatic anchoring effect, so that self-nucleation of the silicon source is inhibited; the surface of the template microsphere is covered by a lying configuration, so that the steric hindrance is reduced, the diffusion of a silicon precursor in a silicon source solution is promoted, and the yield of the mesoporous silica microsphere is improved; the surface of mesoporous silica is grafted and modified by octadecyl trichlorosilane silicon hydroxyl to form a highly crosslinked Si-O-Si skeleton, so that the mechanical strength of the microspheres is improved, the column efficiency loss is reduced, and the comprehensive yield and performance of high performance liquid chromatography are improved.

The present application relates to a kind of carbon dioxide mineralization method and carbon dioxide mineralization device.The carbon dioxide mineralization method includes the following steps: mixing absorption liquid and industrial solid waste at room temperature, obtain mortar;Make mortar solid-liquid separation, obtain clear liquid and thick slurry;Carbon dioxide in flue gas is absorbed by clear liquid, obtain carbon-rich absorption liquid;Carbon-rich absorption liquid and thick slurry occur mineralization reaction at 180 DEG C-220 DEG C, obtain mineralized slurry;Make mineralized slurry solid-liquid separation, obtain mineralized ash and mineralized clear liquid;Wherein, absorption liquid includes inorganic base and organic base, organic base includes monoethanolamine, diethanolamine, triethanolamine, 3-methylaminopropylamine, N-methyl diethanolamine, piperazine, diethylene triamine, triethylene tetramine, tetraethylene pentamine and 2-amino-2-methyl-1-propanolamine at least two kinds.The method greatly improves CO2 capture rate and CO2 utilization rate, and organic base consumption is less, absorption liquid regeneration energy consumption is low, and overall economy is good.

The invention provides an environment-friendly low-chlorine wet strength agent and a preparation method and application thereof.The preparation method comprises the steps that adipic acid and tetraethylenepentamine are mixed and react for 2-6 h at the temperature of 170-190 DEG C, and a prepolymer is obtained; cooling the prepolymer to 120-140 DEG C, adding a modifier, carrying out a heat preservation reaction for 2-3 h, and adding deionized water to adjust the solid content to 55-65% so as to obtain a modified polyamide solution; adding a cationizing agent and epoxy chloropropane into the modified polyamide solution, heating to 65-75 DEG C, reacting, and adding acid to adjust the pH value to 2.5-4.5 when the viscosity of the system reaches 50-80 mPa.s; adding sodium hydrogen sulfite, and carrying out heat preservation reaction for 1-2 hours; and adding deionized water to adjust the solid content to 12-13%, thereby obtaining the environment-friendly low-chlorine wet strength agent. The specific modifier is adopted to modify a polyamide main chain, and the cationizing agent is introduced, so that the prepared wet strength agent not only can remarkably reduce the content of organic chlorine in a product, but also can improve the dry and wet strength, water resistance and folding resistance of paper. In addition, the product can also shorten the curing time of the paper.

The invention discloses a kind of CO2 responsive type gemini imidazoline surfactant and its application in fracturing fluid, tetraethylene pentamine and long-chain fatty acid are fed, using the dimethylbenzene of mass equal to long-chain fatty acid as water-carrying agent, being warming up to 125~140 DEG C and being refluxed, then continuing to be warming up to 190~220 DEG C and being reversed, being cooled to room temperature successively, obtain gemini imidazoline viscous liquid;Step 2:3 chloro-2 hydroxypropyltrimethylammonium chloride and the composition solution of acetone of equal mass are added dropwise to the gemini imidazoline of step one while stirring, then equimolar acid binding agent is added, reacted at room temperature, being warming up to 56~60 DEG C and distilling out acetone, CO2 responsive type gemini imidazoline surfactant can be obtained.The present invention can be used for the thickening agent of clean fracturing fluid, while improving the viscoelasticity of surfactant as thickening agent for preparing clean fracturing fluid, and the clean fracturing fluid formed is obviously stronger acidic, can dissolve the inorganic blockages such as carbonate rock in partial stratum.

A polymeric adsorbent including a polymer having reacted units of a tetraethylenepentamine (TEPA), reacted units of a 3,5-diacrylamidobenzoic acid, and reacted units of a methacrylamide. The TEPA, the 3,5-diacrylamidobenzoic acid, and the methacrylamide have a molar ratio of 2 to 4:1 to 3:0.5 to 2. Reacted units of the TEPA and reacted units of the 3,5-diacrylamidobenzoic acid are covalently crosslinked, and reacted units of the TEPA and reacted units of the methacrylamide are covalently crosslinked. The polymeric adsorbent of the present disclosure can be used for water treatment.

The invention relates to the technical field of plastics, in particular to a high-strength antibacterial plastic packaging bottle and a preparation method thereof. The invention comprises the following steps: polylactic acid, polybutylene succinate, epoxy soybean oil and composite zinc oxide are mixed, extruded into granules and blow-molded to obtain a base member; tea polyphenols are carried on a carrier of mesoporous nano zinc oxide, which is then coated with carboxymethyl chitosan and grafted with an epoxy compound containing Si-O segments; a protective coating is prepared by using the composite zinc oxide and soybean oil-based self-healing waterborne polyurethane, and the protective coating is coated on the surface of the base member; a polyurethane prepolymer is prepared by using soybean oil-based polyol, polytetramethylene ether glycol and isophorone diisocyanate as raw materials, 2,2-bis(hydroxymethyl)propionic acid is used as a hydrophilic chain extender, the epoxy compound containing Si-O segments is used as a modifier, 1,4-butanediol and dithiodiethanol are used as end-capping agents, triethylamine is used as a neutralizing agent, and ethylenediamine and tetraethylenepentamine are used as amine cross-linking agents to prepare the soybean oil-based self-healing waterborne polyurethane.

The application discloses a preparation method of carbon dot nanometer enzyme, which comprises the following steps: dissolving oxalic acid, polyacetyl imine and ferric nitrate in ultrapure water, heating and mixing, cooling to room temperature, centrifuging, filtering, dialyzing and taking supernatant to obtain the carbon dot nanometer enzyme; and a double-mode detection method for colorimetric and fluorescent detection of glyphosate in fruits and vegetables is constructed by using the prepared oxalic acid carbon dot nanometer enzyme, acetylcholinesterase, acetylcholine, 3,3',5,5'-tetramethyl benzidine and H2O2. The oxalic acid carbon dot nanometer enzyme is prepared by doping ferric nitrate and tetraethylenepentamine with oxalic acid as a precursor, has excellent peroxidase-like activity, and a colorimetric and fluorescent double-mode detection method for glyphosate is constructed by using the oxalic acid carbon dot nanometer enzyme, the double-mode detection results can be verified with each other, and the accuracy and reliability of the detection results are significantly improved.

A method of cleaning a fouled reverse osmosis (RO) membrane using a comb-shaped polymer which includes dissolving the comb-shaped polymer and a base in water to form a solution, contacting the fouled RO membrane with the solution to produce a cleaned RO membrane. The comb-shaped polymer includes reacted units of poly(isobutylene-alt-maleic anhydride) and an oligoethylene amine where, the oligoethylene amine is triethylenetetramine, tetraethylene pentaamine, or pentaethylenehexamine.

The invention discloses a TEPA modified bimetallic MOF material for CO2 adsorption and a preparation method of the TEPA modified bimetallic MOF material, and belongs to the technical field of CO2 adsorption. The preparation method comprises the following steps: firstly, by virtue of a solvothermal method, taking zinc nitrate hexahydrate and magnesium nitrate hexahydrate as bimetallic sources, and reacting with an organic ligand 2, 5-dihydroxy terephthalic acid, so as to prepare Zn-Mg bimetallic MOF-74; and then grafting tetraethylenepentamine to the skeleton of the bimetallic MOF-74 in an inert atmosphere by adopting a post-synthesis grafting method. The chemical adsorption site of TEPA is combined with the physical adsorption framework of Zn-Mg bimetal MOF-74, the regulation and control effect of bimetal on the pore structure and rich amino functional groups introduced by TEPA are utilized, the CO2 adsorption capacity, the amine efficiency and the cycle stability are improved, and the preparation method is mild in condition, simple in process, easy to expand and suitable for industrial production. The method has a wide application prospect in the fields of industrial flue gas CO2 capture and the like.

The present application relates to a kind of transparent flame-retardant coating compound and its preparation method and application, the structural formula of the compound is as shown below: preparation method includes with diphenyl phosphor chloride (DPPC), tetraethylenepentamine (TEPA), ladder epoxy polysiloxane (AEOS) as raw material, by two-step method polymerization is obtained.The transparent flame-retardant coating compound of the present application is used for polycarbonate coating, with the characteristics of strong adhesion, high surface hardness, excellent transparency and flame-retardant performance, has good market application prospect.

The invention relates to the field of polyacrylamide, in particular to functionalized polyacrylamide for aluminum oxide production and a preparation method of the functionalized polyacrylamide, and the functionalized polyacrylamide is a polymer obtained by copolymerization of an acrylamide structural monomer, an anionic structural monomer and a multi-amino monomer. The polyamino monomer accounts for 15-25% of the total mass of the polymerization unit; the anionic structure monomer accounts for 60-75% of the total mass of the polymerization unit; wherein the synthesis of the polyamido monomer comprises the following steps: dissolving acryloyl chloride, biguanide or tetraethylenepentamine in a mixed solution of acetone and triethylamine, and reacting at 25 DEG C for 1-5 hours; and distilling reactants to remove the solvent and unreacted monomers. Polymeric monomers containing polyamine groups enter a polyacrylamide main chain through free radical polymerization copolymerization, electropositive nitrogen atoms on the polyamine monomers and F <-> form polydentate hydrogen bonds, fluorine elements can be effectively enriched on a polymer chain, the polyamine monomers serve as a flocculating agent, meanwhile, the fluorine content in wastewater is reduced, and the effect that one agent has multiple effects is achieved; and the defluorination section in the later process is simplified.

This invention provides an energy-storing, luminescent phase-change hot-melt road marking material and its preparation method, made from the following raw materials: C5 petroleum resin, glass microspheres, silane coupling agent, polyoxymethylene, polyoxyethylene, sodium sulfate, multi-walled carbon nanotubes, expanded graphite, oligomeric dopamine, isophorone diisocyanate, tetraethylenepentamine, perhydropolysilazane, N,N,N',N'-tetramethylbenzidine, 2,8-bis(diphenylphospho)dibenzo[b,d]thiophene, silica aerogel powder, nano-titanium dioxide powder, calcium carbonate powder, barite powder, lauric acid, palmitic acid, hexadecyltrimethylammonium bromide, polyethylene glycol octylphenyl ether, dioctyl phthalate, and acetic acid. While ensuring the visibility and durability of the road markings, this invention reduces high-temperature deformation and low-temperature cracking of the hot-melt road markings, minimizes the propagation of internal cracks, increases the service life of the hot-melt road markings, and reduces maintenance and repainting costs.

The present invention relates to the field of building materials technology, in particular to a kind of flame retardant and water-resistant magnesium oxysulfate board and its manufacturing process. The present invention discloses the following scheme: light-burned magnesium oxide powder, magnesium sulfate heptahydrate, water, fly ash, citric acid, iminodiacetic acid type chelating resin are mixed to obtain magnesium oxysulfate mixed slurry; using hydrogen-terminated polydimethylsiloxane and 10-undecenal as raw materials, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is grafted after the reaction, and then isophorone diisocyanate is used for end-blocking to obtain an isocyanate-terminated silicon-containing flame retardant; the isocyanate-terminated silicon-containing flame retardant is used for modified epoxy resin, and is mixed with epoxy toughening agent and tetraethylene pentamine to prepare epoxy resin glue; glass fiber cloth is immersed in epoxy resin glue, then combined with magnesium oxysulfate mixed slurry, and solidified to obtain magnesium oxysulfate board. The magnesium oxysulfate board prepared by the present invention has high strength and good flame retardancy and water resistance.

This invention relates to the field of wet-process phosphoric acid separation and purification technology, specifically disclosing a phosphoric acid extraction apparatus and method based on tetraethylenepentamine. The apparatus includes a reaction tower, a waste liquid diversion system, a TEPA solution diversion system, and a concentration tank. The waste liquid diversion system includes a waste liquid tank for storing phosphoric acid waste liquid to be treated, a heating pipe installed in the tank, a waste liquid pump connected to the waste liquid tank, and a waste liquid main pipe connected to the pump outlet. The TEPA solution diversion system includes a TEPA solution tank for storing tetraethylenepentamine solution, a TEPA solution pump connected to the tank, and a TEPA solution main pipe connected to the pump outlet. The waste liquid main pipe and the TEPA solution main pipe are respectively connected to the reaction tower. The concentration tank is connected to the bottom of the reaction tower through a guide pipe and is used to receive and concentrate the phosphoric acid solution from which metal ions have been removed. This apparatus, through its integrated diversion and reaction structure, achieves efficient complexation removal of metal ions from low-concentration impurity-containing phosphoric acid waste liquid and continuous recovery of phosphoric acid, and has the advantages of compact process, simple operation, and high extraction efficiency.

The application relates to the technical field of printing and dyeing fixing agents, and particularly discloses a formaldehyde-free fixing agent and a preparation method thereof. The formaldehyde-free fixing agent is prepared from raw materials in the following proportions by weight: dimethyl diallyl ammonium chloride 81-162 parts; acrylamide 9-18 parts; ammonium persulfate 5-7 parts; epichlorohydrin 55-105 parts; tetraethylenepentamine 9-18 parts; triethylamine 4.5-9 parts; dimethylamine 9-18 parts; water 90-120 parts; triallylamine 0.5-1 part; the dimethyl diallyl ammonium chloride, the acrylamide, the ammonium persulfate and the epichlorohydrin are used for preparing product A; the tetraethylenepentamine, the triethylamine, the dimethylamine and the epichlorohydrin are used for preparing product B; the product A, the product B, the water and the triallylamine are mixed to obtain the formaldehyde-free fixing agent. The formaldehyde-free fixing agent of the application can balance the permeability and the reaction film-forming property after application, and has excellent fixing performance.

The invention belongs to the technical field of curing agent preparation, and particularly relates to a normal-temperature rapid curing agent, a synthesis method and application. Tetraethylenepentamine is modified through thiourea, thiourea groups are introduced while the excellent performance of tetraethylenepentamine is reserved, the curing rate of tetraethylenepentamine at the normal temperature can be greatly increased, and the irritation of tetraethylenepentamine is reduced. The prepared modified amine curing agent is simple in preparation process, high in operability and beneficial to industrialization, no solvent is used, no pungent smell exists, and the environment-friendly requirement is met; the prepared adhesive is high in curing rate at normal temperature, high in bonding strength and good in mechanical property.

The invention relates to the technical field of oil field demulsifiers, and particularly discloses a demulsifier for high-viscosity and high-wax-content shale oil and a preparation method of the demulsifier, and the demulsifier for the high-viscosity and high-wax-content shale oil comprises a modified tetrablock phenolic resin demulsifier and a modified phosphate demulsifier in a mass ratio of (3-5): 1; wherein the modified tetra-block phenolic resin demulsifier is a modified tetra-block phenolic resin demulsifier generated by carrying out polymerization reaction on a phenolic resin polyethylene polyamine polymer, ethylene oxide and epoxypropane; the modified phosphate ester type demulsifying agent is a seven-block polyether phosphate ester type demulsifying agent. According to the invention, a slightly oil-soluble demulsifier taking a phenolic resin tetraethylenepentamine polymer as an initiator is compounded with a modified phosphate type slightly oil-soluble demulsifier, and the slightly oil-soluble modified phosphate type demulsifier and the slightly oil-soluble demulsifier taking the phenolic resin tetraethylenepentamine polymer as the initiator are compounded in a multi-series and multi-proportion manner; the invention relates to a dehydration agent specially aiming at shale oil produced liquid treatment.

The invention discloses a nanoparticle enhanced functionalized ionic liquid liquid-liquid phase change absorbent as well as a preparation method and application thereof. The absorbent is prepared from functionalized ionic liquid, nanoparticles, a phase change accelerant and a solvent, the molar concentration of the functionalized ionic liquid is 0.05 to 0.35 mol.kg <-1 >; the mass concentration of the nano particles is 0.05 to 0.45 weight percent; the mass ratio of the phase change accelerant to the solvent is (3: 7)-(8: 2); the functionalized ionic liquid is [tetraethylenepentamine] [1, 2, 3-triazole]; the nanoparticles are titanium dioxide; the phase change accelerant is 1-methoxy-2-propyl alcohol; the solvent is water. The absorbent disclosed by the invention shows ideal carbon dioxide trapping performance such as high cycle capacity, low regeneration energy consumption, moderate rich phase volume, low rich phase viscosity, phase change capability in long-term cycle use, high phase separation rate, stable and clear phase interface, high thermal-dynamic performance and the like.

This invention discloses a hyperbranched polyamide modifier, a modified melamine-formaldehyde resin, and their applications, belonging to the technical field of melamine-formaldehyde resin modification. The modifier is prepared from tetraethylenepentamine, ethylenediaminetetraacetic acid (EDTA), a catalyst, and water; the molar ratio of tetraethylenepentamine to EDTA is 1:(0.3-1); the amount of catalyst is 0.5-1.5 wt% of the total mass of tetraethylenepentamine and EDTA. The hyperbranched polyamide modifier prepared by this invention is compatible with melamine-formaldehyde resin, improving toughness and appropriately reducing formaldehyde release.

The invention discloses a preparation method and application of a low-silicon SAPO-34 molecular sieve. Comprising the following steps: mixing an aluminum source, a phosphorus source, a silicon source, a template agent R1, a template agent R2 and water to obtain initial gel, wherein the molar ratio of Al2O3 to P2O5 to SiO2 to R1 to R2 to H2O in the initial gel is 1.0: (0.5-3.0): (0.01-0.3): (0.5-8.0): (0.01-2.0): (20-200); r1 is at least one of diethylamine, triethylamine, di-n-propylamine, diisopropylamine, n-butylamine, morpholine, cyclohexylamine, piperazine and tetraethylammonium hydroxide; r2 is at least one of diethylenetriamine, triethylene tetramine, tetraethylenepentamine, pentaethylenehexamine and polyethylene polyamine; heating and crystallizing the initial gel under a closed condition to obtain a crystallized product; and separating and drying the crystallized product to obtain the molecular sieve. The method is simple in process, good in repeatability and beneficial to large-scale industrial production.

This invention belongs to the field of polymer separation membrane technology for water treatment, specifically relating to an acid-resistant positively charged nanofiltration composite membrane and its preparation method. A polysulfone ultrafiltration membrane is immersed in an aqueous solution containing polyamines and urea compounds, and after standing, excess aqueous phase is removed. Then, it is coated with an oil solution containing polyacrylamide chlorides, and after standing, dried. The resulting membrane is immersed in a coating solution, stood, rinsed, and then dried to obtain the nanofiltration membrane. The total mass concentration of the polyamines and urea compounds is 1%–4%, and the polyamines are one or more of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and polyethyleneimine, with a mass concentration of 0.9%–3.9%. The urea compounds are one or more of methanesulfonylbicyclourea, 4-chlorophenylurea, 1,3-bis(4-chlorophenyl)thiourea, and benzylthiourea, with a mass concentration of 0.1%–1%. This nanofiltration membrane exhibits excellent acid resistance and salt separation effect, making it suitable for industrial applications, especially lithium extraction from acidic salt solutions, and has high practical value.

The present application relates to the technical field of high polymer materials, in particular to a graphene modified TPU heat-conducting tire inner liner and a preparation method thereof.The present application overcomes the problem of poor durability of the current TPU heat-conducting tire inner liner.The present application forms a core-shell filler by grafting tetraethylenepentamine to graphene oxide and self-assembling polydopamine coated nano-silicon dioxide, and then prepares a TPU composite material by supercritical reaction with polycaprolactone polyol and other raw materials, and then adds bismaleimide, polycaprolactone containing furan groups and an antioxidant, and then forms the tire inner liner by three-stage shear injection molding.The modified graphene improves the heat conduction and interface bonding force, the modified silicon dioxide disperses stress, the supercritical reaction and three-stage injection molding ensure the dispersion of the filler and the stability of the structure, and the dynamic reversible bonding system gives the self-repairing function.The tire inner liner prepared by the method realizes the synergistic improvement of heat conduction, mechanical properties and durability.

The invention relates to difunctional powder as well as a preparation method and application thereof. The chemical composition of the difunctional powder is amino modified porous alumina. According to the bifunctional powder, high-specific-surface porous alumina rich in hydroxyl groups on the surface is used as a matrix, amino groups are anchored by virtue of the self pore structure and the hydroxyl groups, and amine sources are diamine components of tetraethylenepentamine (TEPA) and polyethyleneimine (PEI). Absolute ethyl alcohol is adopted as a solvent, and a diamine composite solution is prepared; the difunctional powder is prepared by adopting an ultrasonic dispersion auxiliary impregnation method in combination with cross-linking curing vacuum drying. In complex flue gas containing 500 ppm of SO2 and 500 ppm of NO2 and containing H2O with the moisture content smaller than or equal to 5 vol.%, the capacity of adsorbing and capturing NO2 and the capacity of adsorbing and capturing SO2 at the temperature of 70 DEG C respectively reach 1.65 mmol / g and 1.01 mmol / g. And a key technical support is provided for industrial low-cost collaborative treatment of SO2 and NO2.

The invention relates to a preparation process of high-performance skim rubber. The preparation process comprises the following steps: S1, performing centrifugal separation on natural latex to obtain skim emulsion; s2, filtering through a 40-mesh sieve and a 1500r / min filter in sequence, removing non-rubber components, and determining the contents of dry rubber and ammonia; s3, adding alkaline protease and a tetraethylenepentamine dilute solution into the filtered emulsion, and stirring; s4, the formic acid solution and the enzyme treatment emulsion are input into a long groove in a parallel flow mode to be solidified, and the pH and curing conditions are controlled to form uniform clots; s5, the clots are pressed to be thin through a double-roller thinning machine and three crepers, and then the granules are torn and granulated; and S6, dripping water from the colloidal particles, drying in stages, cooling, weighing, packaging and detecting to obtain a finished product. Non-rubber components are removed through enzyme treatment, and formic acid is adopted for solidification, so that the prepared skim rubber is low in impurity content and excellent in mechanical property, and meets the requirements of high-end products.

The application relates to the technical field of ceramic tiles, and particularly discloses a high-strength ceramic tile and a preparation method thereof. The high-strength ceramic tile is mainly made of the following raw materials in parts by weight: 20-30 parts of sodium feldspar, 15-25 parts of potassium feldspar, 10-20 parts of coal gangue, 2-8 parts of dolomite, 10-20 parts of kaolin, 5-15 parts of bentonite, 3-5 parts of superfine silicon powder, 3-5 parts of superfine titanium white powder, 1-3 parts of modified pre-oxidized fiber, and 0.2-0.8 parts of a dispersing agent; the modified pre-oxidized fiber is obtained by grafting acetoxypropyltrimethoxysilane and tetraethylenepentamine onto pre-oxidized fiber. The ceramic tile has the characteristics of high breaking strength, high modulus of rupture and high wear resistance, exhibits good comprehensive performance, and meets market demands.

The invention relates to a high-temperature-resistant soil-phase-free black-free oil-based drilling fluid suitable for extended reach wells and a preparation method thereof, belongs to the technical field of drilling fluids, and solves the problems of poor shear dilutability, high ECD value, high solid phase content, poor suspension performance and environmental friendliness of the oil-based drilling fluid in the prior art. The drilling fluid comprises diesel oil, an emulsifier, a calcium chloride aqueous solution, slaked lime, a filtrate reducer, a flow pattern regulator, a tackifying and shear strength improving agent, a wetting agent, a blocking agent and a weighting agent. The main emulsifier in the emulsifier is prepared by the following steps: reacting incomplete amide generated by reaction of tetraethylenepentamine and palmitic acid with maleic anhydride to generate a component A, reacting linoleic acid with methyl nadic anhydride to generate a component B, and mixing the component A and the component B to obtain the main emulsifier; the auxiliary emulsifier is oil-soluble soap generated by reacting stearic acid with organic amine. The drilling fluid has the advantages of good shear dilutability, low ECD value, extremely low solid phase content and good suspension performance.

The invention discloses a corrosion inhibitor for inhibiting corrosion of an injection-production system of a CO2 injection oil displacement system, and relates to the technical field of corrosion inhibitors, the corrosion inhibitor comprises the following raw materials by weight: 10-30 parts of a corrosion inhibitor active matter, 2-6 parts of a surfactant, and 60-80 parts of a solvent; the preparation method of the corrosion inhibitor active matter comprises the following steps: sequentially carrying out a dehydration reaction and a cyclization reaction on thiophene-2, 5-dicarboxylic acid, tetraethylenepentamine and xylene in a reaction container, then adding thiourea, and carrying out a reaction at 138-162 DEG C for 5-15 h to prepare the corrosion inhibitor active matter. By designing a stable and efficient corrosion inhibitor active matter structure and combining a synergistic effect mechanism of the surfactant, the performance of the corrosion inhibitor for inhibiting corrosion of an injection-production system of a CO2 injection oil displacement system is remarkably improved.

The application provides a room-temperature curing high-temperature resistant adhesive and a preparation method thereof, and the preparation method comprises the following steps: modifying an epoxy resin by using trimethylphenylsilane and KH560 to obtain a modified epoxy resin; mixing and stirring the modified epoxy resin, a phenolic epoxy, KH560, an adhesion promoter, carbon fibers, colloidal graphite and hollow glass microspheres to obtain an adhesive matrix; mixing and stirring a high-temperature resistant epoxy curing agent, tetraethylenepentamine and 2,4,6-tris(dimethylaminomethyl)phenol to obtain a curing agent mixture; and mixing and stirring the adhesive matrix and the curing agent mixture to obtain the room-temperature curing high-temperature resistant adhesive. The application realizes long-period service of the adhesive in a high-temperature environment.

The invention belongs to the technical field of dehydration adsorbent materials, and discloses a COFs biochar composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing biochar, tetraethylenepentamine and methanol, and reacting under solvent reflux; after the reaction is finished, collecting a reaction product, washing and drying to obtain aminated biochar; mixing the aminated charcoal with 2, 5-dihydroxy terephthalaldehyde, 1, 3, 5-tri (4-aminophenyl) benzene and acetonitrile, and carrying out ultrasonic dispersion, so as to obtain a dissolution system; mixing the dissolving system with an acetic acid aqueous solution, and then standing at room temperature; after standing is finished, precipitates are collected through centrifugation, and the COFs biochar composite material is obtained through washing and vacuum drying. According to the material prepared by the invention, waste biochar is taken as a substrate, a nano COFs material synthesized based on Schiff base reaction is loaded, and the material is a dehydration adsorbent for water-containing vegetable oil and / or water-containing mineral oil, which is high in precision and good in effect.

This invention relates to a halogen-free flame-retardant polyamide material for low-voltage circuit breaker housings. The halogen-free flame-retardant polyamide material comprises the following components in parts by weight: polyamide, star-shaped polyamide, modified glass fiber, montmorillonite, halogen-free flame retardant, and additives. The star-shaped polyamide is a hyperbranched polyamide derivative having multiple amino end groups. The modified glass fiber is gluconic acid-modified glass fiber. This invention obtains a star-shaped polyamide with a hyperbranched structure containing a large number of amino groups through free radical polymerization of tetraethylenepentamine and acrylate. Simultaneously, gluconic acid is used to treat the glass fiber, introducing gluconic acid into the modified glass fiber. This improves the compatibility between the glass fiber and montmorillonite, polyamide, etc., resulting in a tighter bond between the modified glass fiber and other components.