443 results about "Ethylene imine" patented technology

The invention provides a flame-retardant heat-insulating fabric for fire-fighting clothes and a preparation process thereof, and belongs to the technical field of fire-fighting fabrics. The preparation process comprises the following steps: preparing coated modified ammonium polyphosphate; modified expanded perlite; preparing a flame-retardant outer-layer fabric; preparing a heat insulation core layer fabric; preparing an antibacterial inner layer fabric; and bonding. The flame-retardant heat-insulating fabric for the fire-fighting clothes comprises a flame-retardant outer-layer fabric, a heat-insulating core-layer fabric and an antibacterial inner-layer fabric, ammonium polyphosphate is dispersed in deionized water, polyethyleneimine is added under the acidic condition, amino on the polyethyleneimine and ammonia ions of the ammonium polyphosphate are subjected to an ion exchange reaction, and the flame-retardant heat-insulating fabric for the fire-fighting clothes is obtained. According to the flame-retardant outer-layer fabric, ammonium polyphosphate is preliminarily coated, then a hydroxyethylidene diphosphonic acid solution is added for a salt forming reaction, coated modified ammonium polyphosphate with a core-shell structure is prepared, the coated modified ammonium polyphosphate and polyester powder are mixed and granulated, then the flame-retardant outer-layer fabric is prepared, and the flame-retardant property of the flame-retardant outer-layer fabric can be effectively improved.

The invention discloses a high-performance green and environment-friendly single-component polymer cement waterproof dry blend and a preparation method thereof, and relates to the technical field of building materials, the high-performance green and environment-friendly single-component polymer cement waterproof dry blend comprises the following components: an inorganic cementing material, latex powder, graded quartz sand, a functional filler, cellulose ether, an organic silicon defoamer, a polycarboxylic acid water reducer and compound fibers; the functional filler is modified waste glass powder prepared through mechanical activation and silanization modification; the compound fiber is a mixture of modified glass fiber and modified polypropylene fiber; the preparation of the modified glass fiber comprises tannic acid and polyethyleneimine combined modification and graphene oxide modification, and the preparation of the modified polypropylene fiber comprises plasma activation. The polymer cement waterproof dry blend prepared by the method adopts the glass powder to replace natural mineral filler, is energy-saving and environment-friendly, and the cement matrix is modified by various fibers, so that the prepared polymer cement dry blend is excellent in comprehensive performance.

The invention discloses a temperature / CO2 dual-response zwitterionic hydrogel profile control agent, which is prepared by taking a monomer A, a monomer B and a monomer C as raw materials, adding a cross-linking agent and an initiator, and carrying out polymerization reaction in a water medium. The monomer A is selected from any one of acrylamide, acrylic acid and 1-vinyl-2-pyrrolidone; the monomer B is selected from any one of [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, 2-methacryloyloxyethyl phosphorylcholine and 3-((2-(methacryloyloxy) ethyl) dimethylamino) propionic acid inner salt; and the monomer C is selected from any one of 2-(dimethylamino) ethyl methacrylate, dimethylamino propyl methacrylamide and polyethyleneimine. The profile control agent has double swelling mechanisms, has outstanding temperature and salt resistance, resists 220000 mg / L of mineralization water, is suitable for high-salt reservoirs, and is good in long-term aging property.

The invention provides a pharmaceutical wastewater treatment process. The pharmaceutical wastewater treatment process comprises the following steps: A1, pretreatment, A2, adsorption treatment, A3, oxidation treatment and A4, filtration treatment. In the step A2, a composite adsorbent comprising the following raw materials: attapulgite, activated carbon, carbon nanotubes, 4-carboxyphenylboronic acid, polyethyleneimine, sodium dithiocarbamate, epoxy resin E-44, deionized water and modified nano zero-valent iron is used, and self-repairing is realized through dynamic chemical bonds such as boric acid ester bonds, imine bonds and thiol-disulfide bonds; the adsorbent can be self-repaired during microscopic damage, so that the service life is prolonged, and relatively high adsorption capacity is kept. In the step A3, a gel microsphere oxidant comprising the following raw materials: hydrogen peroxide, potassium persulfate, copper-iron sulfide, nitrogen-doped carbon quantum dots, sodium alginate powder, sodium polyacrylate and a phosphate buffer solution is used, and efficient degradation is realized through a synergistic mechanism of free radical oxidation, non-free radical oxidation and photocatalysis.

The invention relates to the technical field of plastic films, in particular to a preparation method of an environment-friendly plastic bag, which comprises the following steps: S1, mixing polyethyleneimine, ammonium polyphosphate and a first solvent, then carrying out primary reaction, cooling to room temperature, filtering, washing and drying to obtain a solid-phase substance; s2, tannic acid and a second solvent are mixed, tris (hydroxymethyl) aminomethane is added, the pH is adjusted to 7-9, then hydrogen peroxide is added, after a secondary reaction, the solid-phase matter is added for a third reaction, filtering, washing and drying are conducted, and a heat-resistant enhancer is obtained; s3, the modified polylactic acid, the heat-resistant enhancer and the auxiliaries are put into a high-speed mixer to be mixed to be uniform, then the mixture is added into a double-screw extruder to be granulated, then film blowing is conducted through an air blower, and the environment-friendly plastic bag is obtained. The environment-friendly plastic bag provided by the invention has excellent mechanical properties, thermal stability and ultraviolet resistance.

The invention provides an MXene-derived skeleton composite phase-change material with strong electromagnetic shielding performance, which is a composite phase-change material with a stable shape, which is obtained by taking MXene-derived aerogel as a skeleton material and carrying out vacuum impregnation and adsorption on a molten phase-change material. Wherein the MXene-derived aerogel is an aerogel-based framework material obtained by adding chitosan quaternary ammonium salt, polyethyleneimine and carbon nanotubes into an MXene aqueous dispersion, uniformly dispersing to obtain a mixed solution, directionally and rapidly freezing in liquid nitrogen, carrying out vacuum freeze drying and carrying out high-temperature carbonization. The composite phase change material not only has high thermal conductivity and high latent heat, but also has an EMI (Electro-Magnetic Interference) shielding function and electric heating, photo-thermal and magnetic-thermal conversion capabilities, the highest thermal conductivity is 0.64 W / m.K, the EMI shielding effectiveness is up to 38.28 dB, and the composite phase change material has wide application prospects in electric heating, photo-thermal, magnetic heating, energy storage and electronic equipment thermal management.

The invention discloses a preparation method of a self-adaptive anti-electromagnetic interference composite material, which comprises the following steps: firstly, etching a Ti3AlC2 precursor through a LiF / HCl solution to prepare few-layer MXene powder; the preparation method comprises the following steps: preparing a carbon nanotube / Ti < 3 > C < 2 > T < x > MXene powder / chitosan / polyethyleneimine dispersion liquid through a chemical crosslinking method; and finally, carrying out a freeze drying process to obtain the carbon nanotube / Ti < 3 > C < 2 > T < x > MXene powder / chitosan / polyethyleneimine composite aerogel. The carbon nanotube / Ti < 3 > C < 2 > T < x > MXene powder / chitosan / polyethyleneimine composite aerogel prepared by the preparation method disclosed by the invention is excellent in electromagnetic shielding performance and high in absorption capacity, and can meet the application requirements in the fields of aerospace, electronic packaging and the like. Meanwhile, the strain sensing capacity is achieved, the sensitivity is outstanding under different strains, repeatability and linearity are good, the capacity of distinguishing different strain magnitudes is achieved, and the strain sensor is suitable for scenes needing dynamic and quantitative strain monitoring. The composite material has efficient electromagnetic shielding performance and excellent sensing performance, and has a wide application prospect in practical application.

The invention discloses a preparation method and application of a cross-basement membrane back-diffusion in-situ growth ZIF modified polyvinyl polyamide positively charged nanofiltration membrane. The preparation method comprises the following steps: firstly, coating a support membrane by using an organic phase solution containing a trimesoyl chloride monomer; the preparation method comprises the following steps: preparing a supporting basement membrane, pouring a mixed aqueous solution of polyethyleneimine and zinc nitrate hexahydrate on the supporting basement membrane to carry out interfacial polymerization, overturning the supporting basement membrane after polymerization, pouring a 2-methylimidazole aqueous solution on the surface, carrying out cross-basement membrane in-situ growth of ZIF, and carrying out heat treatment and alcohol activation on the membrane after growth. According to the method disclosed by the invention, ZIF particles can be more uniformly generated in the membrane, interface gaps caused by MOF agglomeration are avoided, a high-positive-electricity layer can be prepared by combining a reverse-phase interface polymerization method in which polyethyleneimine is used as a water-phase monomer, and the water permeation flux is greatly improved while high interception of magnesium ions is maintained; the problem of mutual restriction of permeability and selectivity is solved, the process is simple, and preparation conditions are mild.

Disclosed herein is a composite material in the form of a bead, the beads are either formed from: a polyethyleneimine, graphene oxide, and zeolite nanoparticles, where the bead has a hollow core and a layered shell structure comprising a plurality of layers of graphene oxide and a plurality of layers of polyethyleneimine, where any two layers of graphene oxide are separated by a layer of polyethyleneimine and the zeolite nanoparticles are intercalated between the plurality of graphene oxide layers, and the polyethyleneimine is crosslinked by a negatively charged crosslinking agent; or a polyethyleneimine and graphene oxide, where the bead has a hollow core and a layered shell structure comprising a plurality of layers of graphene oxide and a plurality of layers of polyethyleneimine, where any two layers of graphene oxide are separated by a layer of polyethyleneimine, and covalent bonds are formed between the polyethyleneimine and the graphene oxide to crosslink the polyethyleneimine to the graphene oxide. Also disclosed herein are methods of using the composite material and its manufacture.

The present invention discloses a high thermal conductivity rubber material and a preparation method thereof, and relates to the technical field of rubber production, the high thermal conductivity rubber material comprises a rubber matrix, modified carbon black, a vulcanizing agent, a composite accelerator, an anti-aging agent, zinc oxide, stearic acid, white carbon black, montmorillonite and aramid pulp according to a weight ratio of 100: (40-60): (1.5-3): (2-4): (1-3): (3-8): (1-3): (10-20): (5-15): (3-8); the modified carbon black is prepared by reacting a composite modifier solution prepared from a silane coupling agent, sodium alginate, ammonium polyacrylate, tea polyphenol, polyethyleneimine, nano aluminum oxide and deionized water with carbon black; the composite accelerant is prepared by carrying out pre-dispersion treatment on N-cyclohexyl-2-benzothiazole sulfenamide, tetramethylthiuram disulfide, a rare earth complex and nano zinc oxide. The prepared high-thermal-conductivity rubber material is good in mechanical property and thermal conductivity.

The invention discloses a tough and mildew-proof formaldehyde-free soybean protein adhesive as well as a preparation method and application thereof, defatted soybean powder is taken as a main agent, an epoxy compound is taken as a cross-linking agent, polyethyleneimine modified chitosan is used for synthesizing a modifier to prepare the modified soybean protein adhesive, and a compact cross-linked network structure is constructed, so that the toughness and mildew-proof formaldehyde-free soybean protein adhesive is obtained. According to the soybean protein-based adhesive, the performance of the soybean protein-based adhesive is successfully improved, the soybean protein-based adhesive is high in bonding strength, relatively good in water resistance and good in mildew resistance, the production process is simple and convenient, the production cost is greatly reduced, chitosan and polyethyleneimine are subjected to graft modification, the living environment of mildew is destroyed, and the mildew resistance of the soybean protein-based adhesive is improved. The epoxy compound and the chitosan-polyethyleneimine are compounded and cooperated, so that a stable net-shaped cross-linked structure is formed in the adhesive, and the water resistance and the mildew-proof capability of the adhesive are greatly improved.

The invention provides catalyst slurry and a preparation method thereof, a membrane electrode and an electrolytic bath, and belongs to the technical field of water electrolysis hydrogen production, and the catalyst slurry comprises a catalyst, proton exchange resin, a dispersing agent and a solvent. Wherein the dispersing agent comprises at least one of polyvinylpyrrolidone, polyvinyl alcohol, polyethyleneimine, hexadecyl trimethyl ammonium bromide and hydroxyethyl cellulose. According to the catalyst slurry provided by the embodiment of the invention, sedimentation can be slowed down, the stability of the catalyst slurry is improved, the uniformity of the loading capacity of a catalyst in different membrane electrodes prepared from single-batch catalyst slurry is ensured, and the stability is improved.

The invention relates to a monovalent ion selective cation exchange membrane and a preparation method and application thereof, and the preparation method comprises the following steps: mixing polyethyleneimine and a cross-linking agent to obtain a pre-polymerized solution; coating the surface of a cationic base membrane with the pre-polymerized solution, and then heating to carry out a cross-linking reaction, so as to obtain a base membrane after surface cross-linking; and soaking the base membrane subjected to surface crosslinking in an oil phase solution of acyl chloride monomers, and carrying out interfacial polymerization reaction to obtain the monovalent ion selective cation exchange membrane. Through the synergistic effect of a three-dimensional network structure constructed through cross-linking reaction and a selective separation layer constructed through interfacial polymerization, the Li < + > / Mg < 2 + > separation coefficient can be increased, and long-acting and stable operation is achieved.

The invention belongs to the technical field of oilfield chemistry, and particularly relates to application of a hyperbranched zwitterionic polymer in high-temperature and high-salinity drilling fluid. The hyperbranched zwitterionic polymer is prepared by carrying out Michael addition reaction on polyethyleneimine and a monomer which is neutralized by alkali and contains double bonds and sulfonic acid groups; the polymer has a hyperbranched structure, and the amphoteric ion characteristic that an amino group from polyethyleneimine on a molecular chain and a sulfonic acid group from a monomer form an inner salt structure; the hyperbranched zwitterionic polymer is used as an inhibitor and a viscosity reducer of the drilling fluid. According to the hyperbranched zwitterionic polymer provided by the invention, the salt tolerance and high-temperature stability of the polymer are enhanced by introducing a sulfonate group; the polymer is endowed with low viscosity and high adsorption capacity through a hyperbranched structure, the viscosity of the drilling fluid can be effectively reduced, and clay hydration is inhibited; clay particles are stabilized through electrostatic interaction by zwitterionic characteristics, and the rheological property of the drilling fluid is optimized.

The invention belongs to the technical field of coke oven gas purification treatment, and particularly discloses a method for removing hydrogen sulfide in coke oven gas through photocatalysis, generation of oxygen vacancies is promoted by adopting a synthesis concept of synergistic effect of silver doping and polyethyleneimine, polyethyleneimine provides an alkaline condition on one hand, lone electron pairs on nitrogen are coordinated with zinc on the other hand, and the hydrogen sulfide in the coke oven gas is removed through photocatalysis. The preparation method comprises the following steps: by taking H2S and polyethyleneimine as raw materials, generating abundant oxygen vacancies under the synergistic effect of the H2S and silver, preventing agglomeration of generated ZnO and increasing reaction sites by taking polyethyleneimine as a surfactant, and then promoting a cascade reaction between ZnO < 1-x > and H2S by taking abundant oxygen vacancies, so that a 1D / 3D-ZnS / ZnO heterojunction is generated in situ to further reduce recombination of photo-generated electron holes; the catalyst converts H2S into elemental sulfur through photo-induced electrons and holes, and a carbon disulfide solution is used for cleaning the catalyst to realize regeneration of the catalyst. The method provided by the invention not only improves the removal efficiency of H2S, but also reduces the operation cost and reduces environmental pollution.

The invention discloses a polyphenol modified carbon fiber reinforced sulfonated polyetheretherketone composite material and a preparation method thereof, and belongs to the field of polymer composites.The preparation method comprises the steps that a resin matrix and filler are filled into a mold to be sintered, the resin matrix is sulfonated polyetheretherketone, the filler comprises modified carbon fibers and nano-silicon dioxide, and the modified carbon fibers and the nano-silicon dioxide are sintered to obtain the polyphenol modified carbon fiber reinforced sulfonated polyetheretherketone composite material; the modified carbon fiber is prepared by taking carbon fiber, catechol and polyethyleneimine as raw materials in a Tris buffer solution. The hydration lubrication performance of a resin matrix is improved through sulfonated polyetheretherketone, the hydrophilic property is enhanced, a polyphenol coating is formed through self-polymerization reaction on the surfaces of the carbon fibers, the adhesion performance of the surfaces of the fibers is improved through the pi-pi stacking effect, and the interface bonding force between the carbon fibers and the modified resin matrix is enhanced; the nano silicon dioxide is introduced to modify the matrix of the composite material, so that not only is the overall wettability of the material optimized, but also the mechanical property and the wear resistance are effectively improved, and the final composite material has the characteristics of high strength and low friction.

The application relates to a modified PA56 fabric with long-acting flame-retardant effect and a preparation method thereof, wherein hyperbranched polyethylene imine and ammonium polyphosphate are grafted to obtain hyperbranched modified ammonium polyphosphate, the PA56 fabric is dipped in a hyperbranched modified ammonium polyphosphate solution and dried and solidified, dipped in a melamine flame-retardant finishing agent, then dipped in an acetic acid buffer solution, and dried to obtain the modified PA56 fabric with long-acting flame-retardant effect. Different from the prior art, the hyperbranched modified ammonium polyphosphate is loaded on the PA56 fabric to form a crosslinked network structure; the polyethylene imine is loaded on the PA56 fabric; the ammonium polyphosphate is connected with the polyethylene imine through grafting modification; the melamine is connected with the ammonium polyphosphate through weak bonds such as electrostatic interaction, hydrogen bond and P-N bond, and is wrapped in the outer layer of the fabric, so that the durable flame-retardant effect of the modified PA56 fabric is realized, and the strength of the modified PA fabric is improved.

The invention discloses a polyurethane / cellulose acetate composite fiber membrane, a preparation method and application, and belongs to the technical field of fiber membranes, the surface of the polyurethane / cellulose acetate composite fiber membrane is grafted with a polyethyleneimine chain segment; the raw materials for surface grafting comprise a polyurethane / cellulose acetate composite fiber membrane, polyethyleneimine and dopamine hydrochloride in a mass ratio of 1: (20-30): (0.4-0.8). The polyurethane / cellulose acetate composite fiber membrane has a bicontinuous structure and is high in mass transfer efficiency, and a regular fiber structure and a relatively high specific surface area provide a good physical basis for subsequent grafting of polyethyleneimine chain segments. The dopamine hydrochloride can be self-polymerized on the surface of the composite fiber membrane to form polydopamine, so that the surface activity and the adhesive force of the composite fiber membrane are enhanced, the grafting rate of polyethyleneimine is improved, and the polyethyleneimine can remarkably improve the adsorption capacity of the composite fiber membrane on heavy metal ions through coordination, ion exchange and physical adsorption.

The invention discloses a fiber composite material based on hydrogen bond self-repairing and conductive self-diagnosis and a preparation method of the fiber composite material, and belongs to the technical field of intelligent diagnosis and self-repairing fiber reinforced resin-based composite materials and preparation of the intelligent diagnosis and self-repairing fiber reinforced resin-based composite materials. According to the method, the problem that the self-healing effect cannot be timely obtained on the internal damage of the material due to the fact that the damage area cannot be accurately positioned and identified before the damage of the existing fiber composite material is repaired is solved. According to the invention, a quantum tunnel effect and a three-dimensional conductive skeleton are constructed by using a micro-nano multi-stage conductive filler composed of a nano carbon nanotube, micron flake graphite powder and unidirectional short carbon fiber, a damage occurrence position is realized based on an electro-mechanical corresponding relation, a self-sensing function is given, and accurate positioning of the damage is realized (the error is less than 1mm). A multiple reversible hydrogen bond system formed by acrylamide, polyethyleneimine and epoxy resin is further utilized, the self-repairing effect of the composite fiber material is achieved, and the test result shows that the self-repairing efficiency of at least 90% or above is achieved at the normal temperature.

The invention relates to the technical field of textiles, in particular to functionalized magnetic fiber cloth and a preparation method thereof. The preparation raw materials at least comprise flexible fiber cloth, magnetic nanoparticles and metal or a compound thereof. The flexible fiber cloth is sequentially subjected to amino surface modification treatment and carboxyl surface modification treatment; the magnetic nanoparticles are subjected to amino modification treatment. According to the invention, dopamine and polyethyleneimine are respectively used for modifying flexible fiber cloth and magnetic nanoparticles under the condition of oxidative polymerization, then the amino-modified fiber cloth is converted into carboxyl-modified fiber cloth by using Schiff base reaction, and the carboxyl-activated fiber cloth is coupled with the amino-modified magnetic nanoparticles, so that the magnetic nano-composite material is obtained. And finally, depositing metal or a metal compound on the magnetic fiber cloth by a chemical deposition method, so as to obtain the composite fiber fabric with good conductivity, magnetism and light absorptivity.

The invention belongs to the technical field of artificial veneers, and particularly relates to a fragrance-releasing blue-light-resistant microcapsule and a preparation method thereof, impregnated bond paper of the fragrance-releasing blue-light-resistant microcapsule, a fragrance-releasing blue-light-resistant ecological board and a preparation method of the fragrance-releasing blue-light-resistant ecological board. The technology aims at solving the problems of indoor blue light harm and air quality, and the problems that in the prior art, stable coexistence of a fragrance releasing component and an anti-blue-light component is difficult, and the technology is not compatible. The core is to prepare a multifunctional microcapsule through a unique interfacial polymerization and Schiff base in-situ reaction synchronous process: compound plant essential oil is taken as a core material, a vanillin-polyethyleneimine Schiff base conjugated structure is generated in situ in a wall material, and nanoparticles are cross-linked and fixed, so that a polyurethane / polyurea wall material is formed. The microcapsule is added into an adhesive layer of impregnated bond paper, and then is compounded with a base material through hot pressing to prepare the ecological board. The fragrance releasing and blue light resisting functions are successfully integrated on the board body, the effects that the blue light absorptivity at the wave band of 400-450 nm is larger than or equal to 70%, the formaldehyde release amount is smaller than or equal to 0.025 mg / m, and the fragrance is lasting are achieved, and the technology is highly compatible with an existing production line.

Disclosed herein is an aqueous cathodically depositable electrodeposition coating material composition including at least one binder dispersion (I) including at least one cathodically depositable polymer (a) and at least one pigment paste (II) including at least one pigment and / or filler, where manufacture of the electrodeposition coating material composition includes mixing the binder dispersion (I) and the pigment paste (II), and where the composition also includes at least one alkoxylated polyethyleneimine (b) and where at least one alkoxylated polyethyleneimine (b) is part of the at least one binder dispersion (I) and / or part of the at least one pigment paste (II).

The invention relates to the technical field of scale inhibitors, in particular to a slow-release micro-nano reverse osmosis scale inhibitor and a synthesis process thereof. The corrosion inhibitor comprises amino trimethylene phosphonic acid, polyol phosphonate, acrylic polyol, a poly gamma-glutamic acid-polyethyleneimine grafted copolymer, 1-hydroxyethylidene-1, 1-diphosphonic acid, polyacrylamide and diatomite. A plurality of raw materials are compounded, diatomite is used as a slow-release carrier, a poly-gamma-glutamic acid-polyethyleneimine grafted copolymer is utilized to realize slow release of a medicament, and a bioactive group is grafted on the surface of amino trimethylene phosphonic acid through microbial induced synthesis, so that the bioactivity of the medicament is improved. The problem that in the prior art, a nano-loaded agent is prone to agglomeration under the high pH condition is solved, the binding site and acting force of amino trimethylene phosphonic acid and other components are increased, the adhesiveness of the scale inhibitor to the membrane surface is improved, the long-acting scale inhibition effect under complex water quality is enhanced, and the scale inhibitor has a good application prospect. Therefore, the application efficiency of the reverse osmosis scale inhibitor in actual complex water quality is improved.

The invention provides an immobilized enzyme as well as a preparation method and application thereof. The immobilized enzyme comprises an enzyme and a carrier for loading the enzyme, wherein the enzyme is alpha-amino acid fatty acyl transferase or polypeptide ligase; the carrier is a polymethacrylate matrix carrier; the polymethacrylate matrix carrier comprises an amino carrier or an epoxy carrier; wherein the amino carrier is an amino carrier modified by a long-chain polymer; the epoxy carrier is an epoxy carrier modified by a long-chain polymer; wherein the long-chain polymer comprises polyethylene glycol (Mw) of 2-8 KDa, polyvinyl alcohol (Mw) of 1.7-31 KDa, polyethyleneimine (Mw) of 1.8-70 KDa, polyacrylamide (Mw) of 50-300 KDa or polylysine (Mw) of 1.6-41 KDa. The immobilized enzyme disclosed by the invention is good in intermolecular dispersity and relatively large in spacing, can efficiently catalyze a substrate to synthesize oligopeptide or polypeptide, and has relatively high substrate conversion rate.

The invention relates to the technical field of adhesives, in particular to a solvent-free two-component polyurethane adhesive which is composed of a component A and a component B, the component A is prepared from the following raw materials: microalgae grease, hydrogen peroxide, formic acid, a nickel-based catalyst, bio-based furan diamine, a bio-based maleimide derivative, dimethyl carbonate, an ionic liquid catalyst, vanillin, lipase and furfuryl alcohol; the raw materials of the group B comprise nano cellulose, vanillin, polyethyleneimine, a bio-based material, potassium carbonate, a self-repairing agent and an antibacterial agent. The preparation method of the adhesive comprises the following steps: S1, preparing microalgae oil-based polyol; s2, preparing dynamic crosslinking type isocyanate; s3, synthesizing a dynamic prepolymer of the component A; s4, modifying the nano cellulose; s5, the bio-based HDI and vanillin are mixed and then react at 60 DEG C, potassium carbonate is added for catalysis, and the closed curing agent is obtained; and S6, preparing a component B curing agent. The problems that the main raw materials of the double-component polyurethane adhesive are non-renewable and are not beneficial to environmental protection during application are well solved.

The invention discloses a modified cellulose-polyethyleneimine grafted copolymer reinforcing agent, a preparation method and a recovery treatment process of degradable corrugated paper, and belongs to the technical field of chemical engineering, the preparation method comprises the following steps: S1, adding sodium periodate into a cellulose suspension, placing in a dark condition for reaction, and after the reaction is completed, filtering to obtain a modified cellulose-polyethyleneimine grafted copolymer reinforcing agent; pouring the cellulose suspension into a coagulating bath for coagulating and forming, finally separating the coagulated and formed cellulose from the coagulating bath, and then drying until the cellulose is completely dried to obtain cellulose containing aldehyde groups; s2, adding an ethyleneimine monomer and distilled water as solvents, continuously adding an initiator, and carrying out prepolymerization reaction to obtain prepolymerized polyethyleneimine; the problems of poor reinforcing agent effect and unstable paper performance in the prior art are solved. The method has the advantages of paper pulp purity improvement, paper mechanical property enhancement, environmental protection and degradability.

The invention discloses a ternary block copolymerization low-temperature demulsifier, a preparation method and an application in oil-water separation, polyether and anhydride are dissolved in a solvent to obtain a mixed solution, and the mixed solution is subjected to a reaction at 70-90 DEG C for 1-3 h to obtain a polyether anhydride solution; the preparation method comprises the following steps: adding epoxy chloropropane, dimethylamine, polyethyleneimine and an end-capping reagent into a polyether anhydride solution, and reacting at 90-100 DEG C for 4-5 hours to obtain a binary block copolymerization demulsifier; and adding polysiloxane into the binary block copolymerization demulsifier, and reacting at 110-140 DEG C for 4-5 hours to obtain the ternary block copolymerization low-temperature demulsifier. When 50 ppm of the demulsifier is added at 40 DEG C, the demulsifier can quickly demulsify a high polymer heavy oil-water system and remove water. The demulsifier disclosed by the invention is simple in synthesis step and mild in condition, has a potential application prospect and is expected to be applied to large-scale production of oil fields.

The invention relates to the technical field of adsorption material preparation, in particular to modified activated carbon for removing n-butane and a preparation method thereof.The preparation method comprises the following steps that S1, coconut shell charcoal is impregnated and activated, and activated activated carbon is obtained; s2, enabling the activated active carbon to react with polyethyleneimine and epoxy chloropropane to obtain polyethyleneimine-loaded active carbon; s3, dispersing the active carbon loaded with polyethyleneimine in DMF, adding EDC, NHS and 2, 5-bis (trifluoromethyl) terephthalic acid, and reacting to obtain functionalized active carbon; s4, reacting the sucrose modified molecular sieve with an aminated silane coupling agent to obtain a composite modified molecular sieve; s5, reacting the composite modified molecular sieve, the functionalized activated carbon and glutaraldehyde to obtain the modified activated carbon. The functionalized activated carbon and the composite modified molecular sieve are covalently linked through the chemical cross-linking agent to form multiple adsorption sites, so that the adsorption capacity of the modified activated carbon to n-butane is remarkably improved.

The invention discloses polyethyleneimine and epoxy compound modified sepiolite, the chemical structural formula of the modified sepiolite is shown in the specification, the sepiolite is subjected to chemical grafting loading with epoxy and polyethyleneimine on the surface through a silane coupling agent respectively, and the polyethyleneimine and epoxy compound modified sepiolite is obtained. The amino group on the sepiolite (PSEP) loaded with the polyethyleneimine and the epoxy group on the sepiolite (ESEP) loaded with the epoxy can be subjected to chemical reaction. When the sepiolite is randomly distributed, the PSEP and the ESEP are subjected to curing reaction at a lap joint contact point to form covalent binding, so that the sepiolite is converted into an interconnected continuous network structure. By means of composite modification, the specific surface area of sepiolite is increased, and dispersity, stability and compatibility are improved; and the continuous network can better exert the reinforcing effect of the sepiolite on the strength and the toughness.

The invention discloses a sodium ion battery electrolyte and a sodium ion battery, the preparation raw materials of the electrolyte comprise an electrolyte, an organic solvent and a composite additive, the preparation raw materials of the electrolyte comprise a sodium salt and modified graphite, the preparation raw materials of the modified graphite comprise graphite, dopamine hydrochloride, polyethyleneimine, Sb2O3 and BiCl3, the composite additive is prepared from trimethylsilyl trifluoromethanesulfonate, N-methyl pyrrolidone, vinylene carbonate and nano silicon dioxide. Through synergistic compounding, a high-stability three-dimensional ionic conduction network is constructed, so that the electrolyte has a wide electrochemical window and high ionic conductivity.