16 results about "Ethyl vinyl" patented technology

The invention discloses a preparation method and application of magnetic microspheres for drug adsorption. Ferric salt is dissolved in water and heated, an alkaline agent is slowly dropwise added and stirred, cleaning is conducted after the reaction is finished, and Fe3O4 nanoparticles are prepared; the preparation method comprises the following steps: dispersing Fe3O4 nanoparticles in water, heating, adding a double-bond compound, and cleaning after the reaction is finished, so as to prepare Fe3O4 nanoparticles with-C = C-double bonds on the surface; fe3O4 nanoparticles with-C = C-double bonds on the surfaces are dispersed in water, an emulsifier and an active group compound are added, the active group compound is sodium p-styrenesulfonate, vinylpyrrolidone or triethyl (4-vinylbenzyl) ammonium chloride, continuous heating is performed, cleaning is performed after the reaction is finished, and the magnetic microspheres for drug adsorption are prepared. The magnetic microspheres can be fully mixed with sewage through the directional movement of the magnetic microspheres, adsorption, purification and concentration of drugs are completed through anion groups or cation groups, the operation steps of testing are greatly simplified, and the working efficiency is improved.

The invention belongs to the technical field of gel electrolytes, and particularly relates to an intrinsic flame-retardant gel polymer electrolyte, a preparation method thereof and a battery. The intrinsic flame-retardant gel polymer electrolyte comprises a flame-retardant polymer and an electrolyte, and the flame-retardant polymer comprises the following raw material components: diethyl vinyl phosphate, methyl methacrylate and polyethylene glycol dimethacrylate, diethyl vinyl phosphate is chemically bonded in a polymer network formed by cross-linking polymerization of methyl methacrylate and polyethylene glycol dimethacrylate through an in-situ thermal polymerization reaction, and the volume ratio of the dosage of methyl methacrylate to the dosage of polyethylene glycol dimethacrylate to the dosage of diethyl vinyl phosphate is (1-3): 1: 1. The electrolyte can inhibit a combustion chain reaction under extreme conditions without depending on an additional flame retardant additive, and can realize collaborative optimization of intrinsic flame retardant performance and electrochemical performance on the premise of not influencing an ion transmission channel of the electrolyte.

The application discloses a method for synthesizing branched polyester by using polyester and carbon dioxide derivatives and a product thereof. The method comprises the following steps: performing solid-phase ester exchange reaction on the carbon dioxide derivatives and the polyester under the conditions of inert gas protection and heating to obtain branched polyester; and the carbon dioxide derivatives comprise at least one of 3-ethylidene-6-vinyl tetrahydro-2H-pyran-2-one and a homopolymer pEVL thereof. The application can utilize a large amount of polyester materials and carbon dioxide waste to solve the current more intractable carbon emission and pollution problems.

The present application relates to the technical field of oilfield treatment agent, and is an oilfield sewage treatment oil removal agent and a preparation method thereof.The former is obtained by the following method: 1-ethyl-4-vinylbenzene, methacrylate, long-chain alkyl dimethyl allyl ammonium chloride, urea, anhydrous ethanol and water are stirred and uniformly mixed to obtain a mixed solution, and then acrylamide and a catalyst are added to the mixed solution to react and obtain the oil removal agent.The raw materials are easy to obtain, and the process is simple.The oil removal agent obtained by the preparation method has strong oil removal capacity, high oil removal rate, and is suitable for oil-water separation of oilfield sewage.The oil removal agent is effective in a wide pH range, does not contain metal ions, avoids secondary pollution, and also has the functions of demulsification, sterilization, flocculation and slow release.

The application discloses a production method for improving the binding force of a multilayer copper current collector, and relates to the technical field of current collector production.The production method solves the problems of poor binding force between a base film and a copper metal layer, easy peeling and many pinholes in a traditional composite current collector.The production method comprises four steps: base film pretreatment, argon-oxygen plasma treatment of both sides of the base film; irradiation grafting, covalent grafting of ethyl vinyl methacrylate and glycidyl methacrylate to the surface of the base film; magnetron sputtering bottoming, deposition of a seed layer on the surface of the base film; and electroplating thickening, formation of the copper metal layer by using an electroplating solution containing copper sulfate, hydrochloric acid, sulfuric acid and an additive in a specific proportion.The method of the application converts mechanical binding into chemical bonding through the synergistic effect of 'plasma pretreatment+UV grafting', significantly improves the interlayer peeling force, reduces pinhole defects, is stable in process and easy to be industrialized, and helps the development of high-performance batteries.

The invention relates to the technical field of flame-retardant resin, and provides polydivinylbenzene flame-retardant resin as well as a preparation method and a cured product thereof. The polydivinylbenzene flame-retardant resin provided by the invention is formed by copolymerization of divinyl benzene, ethyl vinyl benzene, a silicon-containing monomer and benzofuran, the divinyl benzene provides a side chain unsaturated group required by crosslinking, and the cured resin has an excellent rigid skeleton; flexible alkyl side chains are regularly inserted into a main chain of the ethyl styrene monomer, so that the impact resistance of the material is improved; by adding the silicon-containing monomer, the combustion performance of the material can be reduced, and the high-temperature resistance and tensile strength of the material are improved; the benzofuran can effectively control the molecular weight of the polymer and reduce the molecular weight distribution of the product. In conclusion, the polydivinylbenzene flame-retardant resin provided by the invention has the advantages of excellent flame retardance, high temperature resistance, high toughness and low dielectric loss, and can meet the use requirements in the fields of electronic packaging, high-end copper-clad plates and the like.

The application discloses a strain of Zygosacharomyces rouxii and application of the strain in fermented food, and belongs to the field of fermentation engineering and biotechnology. The application provides a strain of Zygosacharomyces rouxii MY03, and the preservation number is CCTCC NO: M 20221652. The Zygosacharomyces rouxii MY03 is used for yellow rice wine fermentation, and the alcohol content, fusel and amino acid content of the prepared yellow rice wine have no significant difference compared with a traditional fermentation method, the organic acid content is reduced, the ethyl ester content is increased by 50.82%, the fusel and ester of the produced yellow rice wine are coordinated, the astringency, sourness and alcohol aroma are reduced, the aroma and taste are more balanced, the content of ethyl vinyl guaiacol is increased from 9.16 mu / g to 74.31 mu / g, the herbal aroma is prominent, and the flavor and sensory diversity of the yellow rice wine are increased.

The invention discloses a method for modifying the stability of a perovskite solar cell based on polyion liquid. The perovskite solar cell used in the method structurally comprises conductive glass, an electron transport layer, a perovskite layer, a hole transport layer and a back electrode in sequence from bottom to top. Poly (1-ethyl-3-vinyl imidazolium iodide) is added into a perovskite precursor solution, 5 + / -1 mg of the polymer is added into the precursor solution with the concentration being 1 ml, or an isopropanol solution of the poly (1-ethyl-3-vinyl imidazolium iodide) is spin-coated on a perovskite layer, and 5 + / -1 mg of the polymer is added into the isopropanol solution with the concentration being 1 ml; fTO or ITO is used as the conductive glass; the chemical formula of the perovskite layer is ABX3 (A is Cs, FA and MA, B is Pb and Sn, and X is Cl, Br and I). According to the method, the long-term stability of the perovskite is realized by utilizing the advantages that the imidazole group can effectively passivate the perovskite and the polyion liquid.

A layer of perovskite material for use in an energy harvesting device, the layer having a thickness of less than 60 µm and the perovskite material comprising crystalline material of formula (LC)2(SC)n-1MnX3n+1 with a polar crystallographic point group, wherein each LC is a cation of formula A-B-C, wherein A is selected from ethyl, ethenyl, ethynyl, C1- 4 alkoxymethyl, C1-4 alkylthio, aryl, and heteroaryl, each of which is optionally substituted one or more times with fluoro and wherein the aryl and heteroaryl are optionally substituted one or more times with a substituent selected from C1-4 alkyl, C2-4 alkenyl, C2-4 alkynyl, C1-4 fluoroalkyl, C2-4 fluoroalkenyl, C2-4 fluoroalkynyl, C1-4 alkoxy, hydroxy, formyl, carboxyl and heteroaryl, B is absent or is selected from C1-6 alkylene, C2-6 alkenylene and C2-6 alkynylene, each of which is optionally substituted with fluoro, and C is –N(R1)3+ or – CR1N(R1)2N(R1)2+, wherein each R1 is independently selected from H and C1-6 alkyl, each SC is a cation selected from Cs+, N(R2)4+ and R2CN(R2)2N(R2)2 +, wherein each R2 is independently selected from H and methyl, each M is selected from Pb2+, Sn2+ and Ge2+, each X is halide, n is an integer selected from 1 to 6, and the material comprising photovoltaic and ferroelectric or piezoelectric properties.

Disclosed herein are compositions and methods related to a packaging laminate comprising: a first polymeric layer formed form a composition including polypropylene copolymer and / or a high density polyethylene (HDPE) resin; and a second polymeric layer formed from a composition including a high density polyethylene (HDPE) resin, a linear low density polyethylene (LLDPE) resin, a low density polyethylene (LDPE), and / or LDPE / HDPE copolymer with a coextruded ethyl vinyl alcohol (EVOH) and compatibilizer. Recyclable packaging containers formed of the packaging laminates are also disclosed.

The application belongs to the technical field of clay stabilizer preparation, and particularly relates to a clay stabilizer and a preparation method thereof. The clay stabilizer is composed of the following raw materials: 1-ethyl-3-vinylimidazolium bromide, [3-(dodecyloxy)-2-hydroxypropyl] di(2-hydroxyethyl) methylammonium methyl sulfate, 3-{(dimethyl(3-trimethoxysilyl)propyl)ammonium} propane-1-sulfonate, polyallylamine hydrochloride, glycerophosphorylcholine, lauryl alcohol polyoxyethylene polyoxypropylene ether, glacial acetic acid, and the balance is deionized water. The clay stabilizer has excellent permeability and anti-swelling rate due to the synergistic effect between the raw materials.

The invention belongs to the technical field of clay stabilizer preparation, and particularly relates to a clay stabilizer and a preparation method thereof. The invention relates to a clay stabilizer. The invention relates to an environment-friendly flame retardant which is prepared from the following raw materials: 1-ethyl-3-vinyl imidazole onium bromide, [3-(dodecyloxy)-2-hydroxypropyl] bis (2-hydroxyethyl) methyl ammonium sulfate methyl ester salt, 3-{(dimethyl (3-trimethoxysilyl) propyl) ammonium} propane-1-sulfonate, polyallylamine hydrochloride, glycerophosphorylcholine, polyoxyethylene polyoxypropylene lauryl ether and glacial acetic acid. And the balance of deionized water. According to the clay stabilizer disclosed by the invention, the raw materials have a synergistic effect, so that the clay stabilizer has excellent permeability and anti-swelling rate.

The application discloses a preparation method of multi-metal organic framework modified graphene oxide microspheres. The prepared microspheres are coated with multiple layers of graphene oxide on the surface of ethyl vinylbenzene / divinylbenzene (EVB / DVB) microspheres, and then the multi-metal organic framework is modified on the surface of the graphene oxide. The application uses graphene oxide as an intermediate to connect the metal organic framework and the polymer, thereby improving the stability of the material. The EVB / DVB microspheres are used as the matrix of the metal organic framework, so that the stability of the metal organic framework can be enhanced, and the metal organic framework is convenient for centrifugal recovery. The composite material can provide coordination, hydrophobic and pi-pi conjugation, thereby improving the affinity of the material to bisphenol substances, and the adsorption of the bisphenol organic substances is obviously improved. The metal organic framework is bonded to the microspheres, so that the specific surface area is increased, the contact area with the bisphenol substances is increased, and the adsorption efficiency is improved.

The invention discloses CO2-based thermoplastic polyurethane and a preparation method thereof. The method adopts a one-pot two-step reaction and comprises the following steps: firstly, performing ring-opening copolymerization on alpha-ethylidene-delta-vinyl-delta-valerolactone (EVP) (from telomerization of CO2 and 1, 3-butadiene) and a cyclic monomer (cyclic lactone or cyclic carbonate) to prepare unsaturated copolyester polyol with a side chain containing carbon-carbon double bonds; and taking the polyol as a soft segment, and reacting with diisocyanate and a chain extender to obtain the thermoplastic polyurethane. Controllable transformation of the material from a crystalline state to an amorphous state and from a plastomer to a high-elastic body is realized by regulating and controlling the EVP content (0-19 mol%). The obtained material can be selectively subjected to bulk depolymerization under the action of a catalyst, is efficiently recovered into EVP and a cyclic monomer, and has good chemical recovery performance. Meanwhile, side chain double bonds provide reaction sites for subsequent functionalization, so that the polymer has good application prospects in the fields of elastomers, adhesives, biomedical materials and the like.

The application discloses a preparation method of photo-crosslinking stabilized temperature-responsive ionic polymer micelles, and specifically comprises the following steps: preparing a PNIPAM-based polymer and a urea group-containing intermediate; preparing a positive ion polymer by using the urea group-containing product, N-triethyl-(4-vinyl benzyl) ammonium chloride, p-styrene-7-hydroxy-4-methyl coumarin and AIBN; preparing a negative ion polymer by using the urea group-containing product, sodium p-styrene sulfonate, p-styrene-7-hydroxy-4-methyl coumarin and AIBN; and irradiating aqueous solutions of the positive ion polymer and the negative ion polymer with ultraviolet light, and then mixing to obtain composite ionic polymer micelles. Based on a modular polymerization route of thiol-ene click chemistry, a temperature-sensitive PNIPAM unit, an ultraviolet light-crosslinkable photosensitive group and an ionizable quaternary ammonium salt / sulfonate group are integrated, so that a temperature-ultraviolet light dual-responsive polymer with positive / negative ion characteristics is constructed.

A composition comprising the following:a) an ethylene / alpha-olefin / interpolymer;b) a peroxide;c) a “Si-containing compound” selected from the following i) through v): i)where each R is independently selected from a C1-C3 alkyl, and n is from 1 to 16; ii)where each R is independently methyl or ethyl, and n is from 1 to 18; iii)where each R is independently methyl or ethyl; iv) a vinyl oligomeric siloxane; or v) any combination of i) through iv).