126 results about "Poly(ethylene glycol) diglycidyl ether" patented technology

The invention discloses a chitosan hemostatic material formed through covalent crosslinking and a preparation method thereof. The chitosan hemostatic material formed through covalent crosslinking is obtained by chemically crosslinking chitosan by utilizing a crosslinking agent via covalent bonds, wherein the crosslinking agent is polyethylene glycol diglycidyl ether. The preparation method of the chitosan hemostatic material formed through covalent crosslinking comprises the following steps: 1) preparing chitosan into a water solution; 2) adding the crosslinking agent to the chitosan water solution, fully stirring and mixing the materials, then pouring the mixture into a mold, and freeze-drying the product, thus obtaining the chitosan hemostatic material, wherein the crosslinking agent is polyethylene glycol diglycidyl ether. The chitosan hemostatic material and the preparation method have the beneficial effects that chitosan is crosslinked by polyethylene glycol diglycidyl ether under acidic conditions; an ethylene oxide group in polyethylene glycol diglycidyl ether carries out ring-opening reaction with hydroxyl on chitosan under acidic conditions to form the crosslinked product by generating ether bonds; the crosslinking agent used in the method is relatively safe; the preparation process is simple and practicable and is lower in production cost.

The invention discloses a preparation method of a polymer gel electrolyte membrane. The preparation method includes following steps: S1, mixing polyethylene glycol diglycidyl ether, polyether amine and solvent to obtain a precursor solution; S2, applying the precursor solution on a porous thin film, and heating for reaction to obtain a polymer membrane supported by the porous thin film; S3, soaking the polymer membrane in liquid-state electrolyte to adsorb the same to obtain the polymer gel electrolyte membrane supported by the porous thin film. The polymer gel electrolyte membrane is high in mechanical stability, ion conductivity and compatibility with a metal sodium interface. The invention further provides the polymer gel electrolyte membrane prepared by the method and a sodium secondary battery using the polymer gel electrolyte membrane.

The invention discloses a cardanol modified waterborne epoxy curing agent and a preparation method thereof. The cardanol modified waterborne epoxy curing agent is prepared by taking cardanol and polyethylene glycol as raw materials through the following steps: firstly, synthesizing polyethylene glycol diglycidyl ether and cardanol glycidyl ether respectively; then dropwise adding the polyethyleneglycol diglycidyl ether and fatty amine to react; and adding the cardanol glycidyl ether and carrying out reaction to prepare a product. The epoxy curing agent has water dispersibility and the viscosity is relatively low and is 1000 to 4000mpa.s, so that the epoxy curing agent can be stably stored under the condition that no diluting agent exists and is used for epoxy resin coating. According to the cardanol modified waterborne epoxy curing agent, the raw material cardanol is low in price, is easy to obtain and is a renewable biomass energy source; the structure contains a benzene ring rigid structure and a long-chain hydrocarbonyl substituent group, so that the thermal stability and mechanical properties of an epoxy resin cured product are improved; the curing agent which takes water as adispersion medium is convenient to use and can be constructed on a low-temperature and damp structure to form a film; and the content of VOC (Volatile Organic Compounds) is low and an energy-saving and environment-friendly development concept is met better.

The invention relates to a polarity binding agent applied to a lithium-sulfur battery and a preparation method of the polarity binding agent, and belongs to the technical field of a battery binding agent. The binding agent is a polymer obtained by performing reaction of polyethylenimine and polyethylene glycol diglycidyl ether for 3-6 hours under a temperature of 100-150 DEG C according to a moleratio being 1:(0.5-4), wherein the polyethylenimine and a polysulfide are polarly absorbed to form a bond by amino group or amide group of the polyethylenimine so as to achieve the purpose of preventing the polysulfide from being dissolved, and the polyethylene glycol diglycidyl ether is used for hinging the polyethylenimine to form a three-dimensional structure. A strong polar functional group (such as amino group, amide group and hydroxyl) is contained in the binding agent, a large amount of chemical bonds can be formed with the polysulfide under the condition that certain mechanical strength is maintained, the polysulfide is effectively prevented from being dissolved, and the cycle property of the lithium-sulfur battery is improved.

The invention discloses a copper metal organic framework nanoparticle functionalized hydrogel, a preparation method and application thereof. The preparation method comprises the following steps: dissolving carboxymethyl chitosan, and adding reduced glutathione and N-hydroxysuccinimide which are mixed and dissolved in deionized water; adding 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide hydrochloride to prepare glutathione modified carboxymethyl chitosan; preparing copper metal organic framework nanoparticles; then mixing the copper metal organic framework nanoparticles with deionized water; and adding the glutathione modified carboxymethyl chitosan, acrylamide, polyethylene glycol diacrylate, polyethylene glycol diglycidyl ether and an initiator to prepare the copper metal organic framework functionalized hydrogel. According to the invention, the obtained hydrogel has the capabilities of slowly and controllably releasing copper ions, removing active oxygen of a wound surface, always keeping the wound surface free of hydrops and a wet 3D microenvironment, protecting the wound from external injury and promoting wound healing.

The invention belongs to the field of polymer electrolytes, and discloses a polymer electrolyte with a flame retardant function and preparation and application thereof. The polymer electrolyte comprises a metal salt and a cross-linked polymer formed by taking hexaphenol amino cyclophosphazene as an inner core and polyethylene glycol diglycidyl ether as a cross-linking arm, wherein the chemical structural formula of the cross-linked polymer is shown in the description, and n is an integer ranging between 4 and 113. By improving the key structure and composition of the polymer electrolyte and the overall process design of the corresponding preparation method, the polymer electrolyte which can be applied to metal ion batteries such as lithium-ion batteries and has the flame retardant functionis obtained. Compared with the prior art, the safety problems such as low ionic conductivity, poor mechanical performance and easy combustion and explosion of the polymer electrolyte can be effectively solved.

The invention specifically relates to epoxy resin for a 50: 50 indoor powdery paint with a high leveling grade and further discloses a preparation method thereof, belonging to the technical field of powdery paints. The epoxy resin for the 50: 50 indoor powdery paint with a high leveling grade is prepared through polymerization of bisphenol A, epichlorohydrin, sodium hydroxide, polyethylene glycoldiglycidyl ether, pentaerythritol dioleate, E-51 epoxy resin, adipic acid, cyclohexane-1,2-dicarboxylic acid diglycidyl ester and N,N-dimethylformamide. The synergistic action among the raw materialsensures that the produced epoxy resin has excellent overall performance such as impact resistance, excellent adhesion, water resistance, etc. The epoxy resin is finally applied to the 50:50 indoor powdery paints and allows a coating with excellent comprehensive performance and a high leveling grade to be obtained.

The invention discloses a preparation method of surface-functionalized elution micro-spheres capable of carrying drugs, relating to the field of bio-medical materials. The preparation method comprises the following steps: (1) by taking carboxymethyl chitosan as a raw material and polyethylene glycol diglycidyl ether as a cross-linking agent, preparing cross-linking carboxymethyl chitosan micro-spheres of which the particle sizes are mainly distributed in 300-400mu m by a reverse micro-suspension cross-linking method; and (2) putting the prepared dry cross-linking carboxymethyl chitosan micro-spheres into an aqueous solution of 2-acrylamide-2-methylpropanesulfonic acid for soaking, and carrying out graft polymerization on the 2-acrylamide-2-methylpropanesulfonic acid on the surfaces of the micro-spheres by taking ammonium ceric nitrate as an initiator, so as to modify the micro-spheres. As the surfaces of the micro-spheres, modified by graft polymerization, have a large number of sulfonic acid groups, drugs with positive charges, such as doxorubicin hydrochloride, can be effectively carried, so that the elution micro-spheres can be hopefully prepared.

The invention relates to a preparation method of a water-borne epoxy resin coating, and relates to the coating preparation field, and particularly relates to the preparation method of the water-borneepoxy resin coating. The method includes steps of adding triethylene tetramine in a 250 mL four-opening flask; rising temperature to 65 DEG C and then stirring while slowly dropwise adding polyethyleneglycol diglycidyl ether under constant temperature; performing constant temperature reaction; slowly dropwise adding the solvent dissolved epoxy resin in a reaction product prepared in step one; after dropping completely, continuing the constant temperature reaction for 3 hours; dropwise adding end-capping reagent in a chain expanding reaction product; after dropping, performing the constant temperature reaction for 1 hour; adding distilled water, and stirring for 0.5 hour and then stopping reaction; preparing the self-emulsified water-borne epoxy resin curing agent. The preparation method issimple in technical flow, safe in operation, and gentle in reaction; the production efficiency and product quality are greatly improved, the production cost is reduced; the processed product has goodlead hardness, impact resistance, adhering property, water resistance and chemical goods resistance; moreover, the service life is long.

The invention discloses a graphene nano composite material. The preparation method of the graphene nano composite material comprises the following steps: (1) preparing a graphite oxide suspension; (2) performing a reaction on the graphite oxide suspension and a copper lysine complex, adding hydrazine hydrate and NaBH4, and performing reduction; (3) adding disodium EDTA to remover copper; (4) mixing the product obtained in the step (3), an E-42 epoxy resin, ethylene glycol diglycidyl ether, poly(ethylene glycol) diglycidyl ether, KH560 and nano boehmite, and performing ultrasonic dispersion; and (5) performing a reaction on the product obtained in the step (4), C12-C14 aliphatic glycidyl ethers, nano titanium dioxide, glass microspheres and camphor at 70-80 DEG C for 2-3 hours. The graphene nano composite material disclosed by the invention effectively solves the problem of dispersity in graphene; the adhesive force, wear resistance and antibacterial effect of the composite material are enhanced; and the graphene nano composite material can be used for preparing environment-friendly paints.

The invention relates to a high-transparency and low-cost polylactic acid composite material, which contains, by weight, 50-75 parts of polylactic acid, 1-5 parts of PBAT resin, 20-40 parts of ultrafine diatomaceous earth, 1-5 parts of polyethylene glycol diglycidyl ether, and 1-3 parts of epoxy vegetable oil. According to the present invention, the disclosed polylactic acid composite material can maintain the high transparency under the premise of the maintaining of the high proportion of the filler so as to reduce the application cost of the polylactic acid; and the polylactic acid composite material has advantages of excellent transparency, excellent mechanical property, high whiteness, environment friendliness, and simple preparation.

The invention discloses a method for manufacturing quaternary ammonium salt terminated hydrophilic block silicone oil. According to the method, an organic silicon annulus and an epoxy-terminated silicone oil chain extender are adopted, linear silicone oil with epoxy groups at both ends is prepared through an equilibration reaction in an alkaline catalyst, the linear silicone oil is then subjectedto block copolymerization with polyethylene glycol diglycidyl ether and 3-dimethylamino-1-propylamine in an isopropanol solvent to obtain tertiary amine-terminated block silicone oil, and glacial acetic acid is finally added to react with the tertiary amine-terminated block silicone oil to prepare quaternary ammonium salt-terminated hydrophilic block silicone oil. The method provided by the invention is simple to operate, the raw materials are simple and easy to obtain, and a finished fabric not only has a smooth hand feeling, but also has a permanent hydrophilic effect, and has a broad marketprospect.

The invention provides a graphene 3D printing material. The graphene 3D printing material is prepared from, by weight, 20-60 parts of modified graphene, 30-50 parts of polyethylene glycol terephthalate, 2-8 parts of nano polytetrafluoroethylene, 1-5 parts of nano silica and 0.1-3 parts of an antioxidant, wherein the modified graphene is prepared from graphene oxide, ammonia water and polyethylene glycol diglycidyl ether, and the mass ratio of graphene oxide to polyethylene glycol diglycidyl ether is 100:(1-5).

The invention provides a solvent-free flexible anticorrosion epoxy coating material, a preparation method thereof and a using method thereof. The epoxy coating material comprises 45-60 parts by weight of epoxy resin, 10-15 parts by weight of a reactive diluent, 10-13 parts by weight of aluminium triphosphate, 7-10 parts by weight of glass flake, 2-3 parts by weight of wetting and dispersing auxiliaries and 10-14 parts by weight of a filling material, wherein the epoxy resin comprises 30-40 parts by weight of bisphenol A resin having an epoxide number of 0.54 and 15-20 parts by weight of bisphenol A resin having an epoxide number of 0.42, and the reactive diluent comprises 4-8 parts by weight of poly(ethylene glycol) diglycidyl ether and 6-7 parts by weight of glycidyl methacrylate. Compared with the prior art, the epoxy coating material has advantages of no solvent and zero VOC discharge, improves durability and brittleness of epoxy coatings and prolongs the durable time and anticorrosion age limit of the epoxy coatings, and therefore the epoxy coating material is environmental-friendly, flexible, long-acting and anticorrosion.

The invention discloses a synthetic method for epoxy end group polythioether liquid rubber. The method comprises the following steps: synthesizing sulphydryl end group polythioether liquid rubber by using thiodiglycol, hydroxyethyl-2-hydroxypropyl thioether and the like as main monomers; then using polyethylene glycol diglycidyl ether resin as a transforming agent so as to transform a sulphydryl end group into an epoxy end group so as to finally generate the end group polythioether liquid rubber. The technology has the advantages that the polyethylene glycol diglycidyl ether resin is adopted as the transforming agent of the end group, the defects that the viscosity of a sulphydryl in traditional epoxy modification technology is high, solvents of toluene, butanone and the like are needed to perform dilution, the reaction exotherm is violent, and a side effect is easy to generate are overcome; reactions are smooth, the product quality is easy to control, the viscosity of the generated epoxy end group polythioether liquid rubber is moderate, and the stability is good; the strength of epoxy resin and the toughness and the heat resistance of polythioether rubber are reserved after the end group is transformed, so that the brittleness of the epoxy resin is improved, and the adhesive property of materials is improved.

The invention belongs to the technical field of solid electrolyte membranes for all-solid-state lithium batteries, and particularly relates to an application of a functionalized quantum dot compositesolid electrolyte membrane to the field of the all-solid-state lithium batteries. The functionalized quantum dot composite solid electrolyte membrane is prepared by selecting polyethylene oxide (PEO)as a polymer matrix, performing co-mixing and microwave-assisted reaction on polyethylene glycol diglycidyl ether (PEGDGE), diethylenetriamine and a citric acid aqueous solution to prepare PEGDGE functionalized carbon quantum dots as fillers, co-mixing PEGDGE functionalized carbon quantum dot dispersion liquid, Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and the PEO to prepare a membrane casting solution, and performing a casting method. The prepared functionalized quantum dot composite solid electrolyte membrane shows more excellent lithium ion conductivity and mechanical property compared with a traditional PEO electrolyte membrane.

The invention relates to an organic flame-retardant gel electrolyte, a preparation method and an application of the flame-retardant gel electrolyte in a lithium ion battery and a supercapacitor, and belongs to the technical field of electrolyte preparation. The gel electrolyte comprises the following components in parts by mass: 1 part of organic solvent, 0.1 to 1 part of electrolyte lithium saltand 0.1 to 3 parts of flame-retardant macromolecules. The flame-retardant macromolecules are obtained through heating open-loop polymerization reaction of tetrabromobisphenol A or tetrabromobisphenolA (bis(2-hydroxyethyl)ether) with a flame-retardant function and polyethylene glycol diglycidyl ether with a lithium ion conduction function and the number-average molecular weight being 500, 2000 or6000, and a reaction molar ratio is 1 to 1. The gel electrolyte prepared by the method has a better flame-retardant effect and ionic conductivity comparable to that of a liquid organic electrolyte, the electrolyte is gelled through the addition of the flame-retardant macromolecules, and the risk of electrolyte leakage is reduced, so that the use safety of the lithium ion battery and the supercapacitor is greatly improved, and the application prospect is wide.

The present invention relates to a method for preparing a mixed matrix membrane for carbon dioxide separation through chemical bridging. According to the present invention, nanoparticles and a polymerare bonded with a bridging agent polyethylene glycol diglycidyl ether through a chemical method to enhance the interfacial action force of UIO-66-NH2 and polyvinylamine, and by enhancing the interfacial action force, the interfacial compatibility of the nanoparticles UIO-66-NH2 and the polymer PVAm is improved to reduce the interface defect so as to obtain the mixed matrix membrane with high permeation selectivity, wherein the CO2 permeation rate reaches 1000 GPU under 0.11 MPa, and the CO2/N2 separation factor reaches 70; and the preparation method has characteristics of simple preparation process, short operation time, easy implementation and low cost; and after the chemical bridging, the interface compatibility of the two phases is substantially improved while the gas separation membrane with excellent permeation selectivity is obtained.

The invention discloses an antistatic anticorrosion paint for petroleum pipelines. The antistatic anticorrosion paint is prepared by stirring the following raw materials of: by weight, 50-55 parts of an epoxy resin, 36 parts of polyaspartic ester, 26 parts of an static conductive auxiliary agent, 20 parts of di-n-butyl, 12 parts of polyethyleneglycol diglycidylether, 23-25 parts of methyl methacrylate, 2-5 parts of acetone, 14 parts of styrene, and 2.5 parts of a thickening agent. The invention is long-acting and antistatic, has strong adhesive force and excellent anticorrosion performance, and requires no special spraying equipment for construction.

The invention discloses a muddy water curing agent for preparing a plant-growing bag from engineering slurry, the plant-growing bag and a preparation method. The muddy water curing agent is prepared from the following raw materials: a copolymer, a cross-linking agent, acrylic acid, an initiator and a surface cross-linking agent, wherein the copolymer is polyvinyl alcohol, acrylamide, methacrylamide or acrylonitrile; the cross-linking agent is selected from one or more of polyethylene glycol diglycidyl ether, ethoxylated glycerol triacrylate and ethylene glycol dimethacrylate; mixing the copolymer, the cross-linking agent and the acrylic acid, and carrying out polymerization reaction; adding the initiator into the solution subjected to the polymerization reaction, heating and stirring to obtain hydrogel, and mincing the hydrogel to obtain gel particles; and spraying the surface cross-linking agent onto the surfaces of the gel particles, and drying to obtain the muddy water curing agent. The muddy water curing agent can effectively modify mud and other waste sludge and make the mud and other waste sludge into the plant-growing bag so that resources are saved, the environment is protected, the cost is low, and the transportation cost is saved.

The invention relates to a preparation method of a Janus-structured polyether/Ag particle. Sulfydryl polyether amine and soluble silver salt are dissolved in water, so that a solution A is obtained, and after sunlight or ultraviolet irradiation, separation and drying, the Janus-structured polyether/Ag particle is obtained; sulfydryl aliphatic amine and poly(ethylene glycol) diglycidyl ether undergo nucleophilic addition-ring-opening polymerization, so that the sulfydryl polyether amine is obtained, a structural formula of a constitutional unit of the sulfydryl polyether amine is shown in the description; in the formula, m is equal to 2 to 4, n is equal to 5 to 250, and both m and n are integers. The method disclosed by the invention has the characteristics of mild reaction conditions and rapid, simple and environment-friendly operation process; the prepared Janus-structured polyether/Ag particle has the characteristics of small grain size, narrow size distribution and good biocompatibility, and can be used as an antibacterial agent, and moreover, the surface of an Ag phase of the Janus particle can be further functionalized, so that the application range of the Janus-structured polyether/Ag particle can be broadened.

The invention discloses a castor oil sourced aqueous epoxy curing agent, and a preparation method thereof. The preparation method comprises following steps: diisocyanate, ricinoleic acid (RA), and dibutyltin dilaurate are mixed to be uniform, the temperature is controlled to be 60 to 85 DEG C, and reaction is carried out for 2 to 4h so as to obtain a ricinoleic acid sourced diacid (RA-DA); RA-DA is reacted with ethylene glycol diglycidylether (or polyethyleneglycol diglycidylether) so as to obtain a ricinoleic acid sourced epoxy active intermediate RAE; and RAE is subjected to polyamine chainextansion and single epoxy end-capping agent end capping so as to obtain the ricinoleic acid based aqueous epoxy curing agent (RAWCA). RAWCA can be prepared into an aqueous solution with a solid content of 40 to 60% for using. According to the preparation method, natural renewable castor oil derivative is taken as a raw material to prepare the aqueous epoxy curing agent product, so that it is helpful in promotion of green renewable forest and grass resource high added value utilization, and satisfying of green environment protection and sustainable development requirements.