55 results about "Ethylene dimethacrylate" patented technology

The invention relates to a preparation method and application for a Mn-doped ZnS quantum-dot surface imprinting fluorescent probe, and belongs to the technical field of preparation of environment functional materials. By utilizing a free radical polymerization method and taking propionamide as a molecular imprinting polymer dummy template, methacrylic acid (MAA) as a functional monomer, Mn-doped ZnS quantum dot graphene oxide (Mn:ZnS@GO) as a matrix material, ethylene dimethacrylate (EGDMA) as a cross-linking agent, azodiisobutyronitrile (AIBN) as an initiator and N,N-dimethyl formamide (DMF) as a solvent, the surface imprinting fluorescent probe is synthesized and is used for enriching detection on acrylamide in food. The fluorescent probe prepared by employing the method embodiments advantages of surface molecular imprinting, avoids the molecule embedding excessive-deep problem of a molecular imprinting polymer template prepared by employing a conventional method, improves identification efficiency and combination speed, and also gives consideration to advantages of high luminescence efficiency, fast fluorescence attenuation and the like of the doped quantum dot, and improves detection rate and sensitivity.

The invention relates to the preparation of molecular imprinted polymer in the technical field of chemical engineering and a method for separating clenbuterol hydrochloride with the molecular imprinted polymer. In the preparation method, clenbuterol, methacrylic acid, ethylene dimethacrylate are mixed according to the mol ratio of 1: 2-6: 15, dissolved in a pore-foaming agent, placed in an ampoule, added with an initiator, processed by ultrasonic wave, fed in nitrogen, sealed in vacuum, and then carried out thermal-initiated polymerization so as to obtain bulk polymer; and the bulk polymer is taken out, crushed, sieved and separated; after the polymer is dried, soxhlet extraction, high-temperature processing and solvent elution are carried out to get rid of a template. In the separation method, the molecular imprinted polymer homogenate is filled in a small column of polypropylene solid phase extraction, and the upper and lower ends of the filling material are respectively added with a sieve plate of polyethylene and the filling material is pressed tightly; and the small column of solid phase extraction is activated, leached and eluted so as to collect clenbuterol hydrochloride. The molecular imprinted polymer prepared by the method has high selectivity and specificity, can resist to unfriendly environment and combine with ELISA in use.

The invention relates to a method for preparing an apiolin molecularly imprinted polymer, comprising the following steps: dissolving apiolin and a functional monomer of 1 mol fraction of template molecule according to the mole ratio of 1:4-1:10 in 40 parts by volume of butylene oxide of a pore-foaming agent; vibrating away from light at constant temperature for 6h; then adding ethylene dimethacrylate as a crosslinking agent, the amount of which is 4-7 times of that of the monomer, and azodiisobutyronitrile as an initiating agent, the quality of which is 1 percent of that of the monomer and thecrosslinking agent, and completely mixing; sealing after N2 is introduced to remove oxygen; carrying out thermal-initiated polymerization at the temperature of 40-60 DEG C for 24-48h, and then obtaining a rod-shaped solid polymer; rubbing and then sieving the polymer; utilizing a methanol/acetic acid (v/v=6:4) eluent to elute so as to remove the template molecule; putting in a vacuum drying cabinet and then drying until constant weight, and then obtaining the apiolin molecularly imprinted polymer. The apiolin molecularly imprinted polymer prepared by the method has specific identification ability and selective adsorption performance on apiolin. Compared with common sorbents, the polymer has the advantages of accuracy, rapidness and sensitivity. Moreover, the polymer has high percent recovery, good repeatability and long service life, thereby having wide application prospects.

The invention relates to a micro-branched micro-cross-linked association polymer, a preparation method and applications thereof. The preparation method comprises: (1) carrying out initial mixing: mixing acrylamide, acrylic acid, 2-acrylamide-2-methyl propanesulfonic acid, a rigid monomer, a branched monomer, a hydrophobic monomer, a surfactant and a solvent, wherein the rigid monomer is any one ora variety of materials selected from N-vinylpyrrolidone, styrene and sodium p-styrenesulfonate, the branched monomer is ethylene dimethacrylate and/or 2-(dimethylamino)ethyl methacrylate, and the hydrophobic monomer is any one or a variety of materials selected from N,N-di-n-octyl acrylamide, N-dodecyl acrylamide and octadecyl dimethylallyl ammonium chloride; (2) adjusting the pH value by addingan alkali; (3) adding an auxiliary agent; and (4) polymerizing: adding an initiator to the mixed solution treated in the step (3), and initiating a polymerization reaction so as to obtain the micro-branched micro-cross-linked association polymer, wherein the obtained micro-branched micro-cross-linked association polymer has excellent temperature resistance and excellent salt resistance.

The invention discloses a preparation method of a blotting membrane for Hg<2+> detection. The preparation method comprises the following steps: designing and synthesizing Rhodamine derivative with special developing function to Hg<2+>; and opolymerizing on a support polyvinylidene fluoride membrane by using target metal ion as a template, ethylene dimethacrylate as a crosslinking agent, azodiisobutyronitrile as a radical initiator, and the synthesized Rhodamine derivative as a function monomer to obtain the blotting membrane for mercury ion detection. The characteristic that the ionic blotting technology has high selectivity to the template ion is adopted by the invention to combine with the simplicity of a colorimetric/fluorescence chemical sensor, a colorimetric/fluorescence chemical sensing blotting membrane with high selectivity to Hg<2+> is prepared, and a fast and high-speed new scene detection method with high sensitivity and high selectivity is hopefully provided for heavy metal ions in environment and food.

The invention discloses a method for preparing a molecularly imprinted solid-phase extraction column of substituted urea pesticide, which belongs to the technical field of food safety. The method comprises the following steps: preparing a template molecule substituted urea pesticide, a functional monomer methacrylic acid and a cross-linking agent ethylene dimethacrylate into a molecularly imprinted polymer microsphere of the substituted area pesticide through suspension polymerization according to a mol ratio of the template molecule to the functional monomer to the cross-linking agent of 1:2-8:20; and weighing the molecularly imprinted polymer microsphere of the substituted urea pesticide to be filled in an empty pipe of polypropylene solid-phase extraction column to prepare the molecularly imprinted solid-phase extraction column of the substituted urea pesticide. The molecularly imprinted solid-phase extraction column of the substituted urea pesticide can be used for selective purification and selective enrichment of an extracted solution of a residual sample of the substituted urea pesticide in inspected food and environment. Compared with common liquid-liquid extraction method and C18 solid-phase extraction method, the method has the characteristics of easiness, rapidness, high purification efficiency and the like.

The invention provides an adhesive for adhering ceramic and metal, belonging to the technical field of adhesives. The adhesive comprises the following raw materials by weight: 20-30 parts of acrylic-acid modified epoxy resin, 4-6 parts of liquid nitrile rubber, 2-4 parts of dicyandiamide, 2-3 parts of hexamethylene tetramine, 1-2 parts of maleic anhydride, 4-10 parts of polymethyl methacrylate, 3-7 parts of ethylene dimethacrylate, 4-8 parts of diaminodiphenyl sulfone, 10-15 parts of silica sol, 5-9 parts of hydrophobically modified alumina particles, 5-10 parts of calcium carbonate, 3-6 parts of dolomite powder, 2-4 parts of bentonite, 2-6 parts of accelerant, 1-3 parts of plasticizer and 40-60 parts of solvent. The adhesive provided by the invention has good adhering properties, is used for adhering ceramic and metal, has the shearing strength of more than 17MPa or more and has the shearing strength of more than 14Mpa after being damaged in the high-temperature environment.

The invention provides a preparation method of macroporous long alkyl side chain acrylic acid ester-styrene-ethylene dimethacrylate crosslinking copolymerization microballoon. The invention relates to macroporous long alkyl side chain acrylic acid ester-styrene-ethylene dimethacrylate crosslinking copolymerization microballoon and a preparation method thereof. In the preparation method, oil-soluble benzoyl peroxide is an initiator, long alkyl side chain acrylic acid ester, styrene and ethylene dimethacrylate are monomers, a suspension polymerization method is employed, an aqueous solution containing a dispersant and salt is water phase, and the monomers containing the initiator and a pore forming agent are mixed as stable oil phase. Under protection of nitrogen, the oil phase is stirred and subjected to a polymerization reaction at a certain temperature, and a resultant is subjected to filtering, washing, Soxhlet extraction, and vacuum drying treatments to obtain the macroporous crosslinking copolymerization microballoon. The above synthetic method has the advantages of safety, easy separation of products, low production cost, easy control of temperature, stable product quality the like, and is suitable for large scale industrial production. Since having porous and hydrophobic characteristics, the hydrophobic macroporous microballoon disclosed in the invention has a substantial advantage in removing enriched hydrophobic organic pollutants in water, which is a prospective environment friendly adsorption material and can be effectively used for processing relative organic waste water. The hydrophobic macroporous microballoon also has potential application value in fields of catalyst and drug carrier, bioseparation and the like.

The invention relates to a non-porous amphoteric ion exchange biological separation medium. The structural formula is shown in figure, and the non-porous amphoteric ion exchange biological separation medium has a preparation method that 40 to 60 ML 1.0 mol/L of diluted HCl is added into 4.0 to 6.0 g non-porous monodisperse P (GMA/EDMA) resin, which is reacted for 2 to 3 hours in the constant temperature at 30 to 40 DEG C after being supersonicly dispersed for 10 to 15 minutes, filtered, and repeatedly cleaned with distilled water to be neutral; the water solution of 30 to 50 ML dimethylamine is further added into the resultant, which is reacted for 20 to 24 hours in the constant temperature at 60 to 70 DEG C; the resultant is repeatedly cleaned with a great amount of water and acetone, and performed the vacuum drying, thereby obtaining ammoniation microspheres; the microspheres after ammoniation are laid in acetonitrile of 120 to 150 ML, 3 to 5 g 1,3-Propanesultone is added, the return flow agitation is performed for 20 to 24 hours at 80 to 90 DEG C after the ultrasonic dispersion, and the resultant is cleaned with a great amount of acetone and ethyl alcohol, and performed the vacuum drying, thereby obtaining the non-porous amphoteric ion exchange biological separation medium. The invention takes 3.0 micron non-porous monodisperse porous poly-glycidylmethacrylate-co-ethylene dimethacrylate resin as a matrix, the adoption of a new chemical modified method prepares novel protein which can simultaneously separate the acidity and the alkality, the protein has the advantages of easy regeneration, strong acid and strong base resistance, high mechanical strength, rapid separation velocity, and high protein quality and activity recovery ratio, and the protein can be widely used for rapid separation and purification of gene engineering products and the protein.

The invention relates to a three-element copolymerized hydrogel and a preparation method thereof. The preparation method is simple, and easy to implement; and the obtained three-element copolymerized hydrogel can effectively adsorb Cr3+, Cd2+, Cu2+ and Pb2+ ions. The preparation method for the three-element copolymerized hydrogel comprises the following step of: performing radiation polymerization on hydroxyethyl acrylate, n-ethylene dimethacrylate and 2-acrylamide-2-methylpropanesulfonic acid, wherein the molar ratio of the hydroxyethyl acrylate to the n-ethylene dimethacrylate to the 2-acrylamide-2-methylpropanesulfonic acid is (1-2):(0.1-0.6):(0.1-0.7); the n-ethylene dimethacrylate monomer is one of 2G, 4G, 9G and 14G; the radiation dosage of radiation polymerization is 1*103-1*106Gy;and the polymerization temperature is between -63 and -95DEG C. The invention has the advantages that: the three-element copolymerized hydrogel can effectively adsorb and chelate heavy metal ions; and the preparation method is simple, and easy to implement.

The invention relates to the field of composite fertilizers, and concretely relates to a modified-acrylic-acid coated synergic sustained-release composite fertilizer. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000 mesh diatomite, 5-6 parts of castor shell, 10-12 parts of rapeseed meal, 4-5 parts of traditional Chinese medicine residue, 5-6 parts of bamboo sawdust, 2-4 parts of zinc gluconate, 3-4 parts of ferrous sulfate, 2-3 parts of sodium thiosulfate, 6-8 parts of ethylene dimethacrylate, 10-12 parts of corn bran, 8-10 parts of potassium chloride, 12-15 parts of urea, 20-25 parts of ammonium dihydrogen phosphate, 8-10 parts of vinasse, 1-2 parts of sodium dodecyl sulfate, 12-15 parts of acrylic acid, 12-15 parts of decomposed manure, 2-3 parts of soybean powder, 2-4 parts of zinc acetate, 1-2 parts of sodium acetate and 4-5 parts of an auxiliary agent. The composite fertilizer is abundant in raw material kinds, abundant and multiple in nutrients and rich in organic materials, is capable of protecting soil and enhancing soil fertility; and dual cladding on nutrients is formed by utilizing a sustained-released coating agent prepared from diatomite and modified acrylic acid in the technology, so that the fertilizer efficiency is relatively durable, the fertilizer utilization rate is greatly improved, and increasing on both production and income of crops is guaranteed.

The invention provides an extraction material in the following component proportion: that methacrylic acid: ethylene dimethacrylate is 1:1 to 1:8 (in molar ratio); that (methacrylic acid +ethylene dimethacrylate): methanol is 1:5 to 1:40 (in molar ratio); and that the content of azodiisobutyronitrile is 1% to 2% of the total amount of the material (by mass). A preparation method of the extraction material comprises that the above materials are mixed according to the component proportion to form a pre-polymerization solution; that the pre-polymerization solution is processed by ultrasonic and reacts; and that that methanol is introduced into the reacted pre-polymerization solution to remove not reacted reagent. A solid-phase micro-extraction device comprises a draw-off device, an injection device and an extraction tube, wherein two ends of the extraction tube are connected to the draw-off device and the injection device respectively, and the extraction tube is axially equipped with a through hole which is filled with the extraction material. A solid-phase micro-extraction method comprises the steps of preparation, extraction, purification, desorption, and cleaning. According to the invention, the cost is low, and the working efficiency is high.

The invention provides a strychnine molecular imprinting polymer and its preparation method, the method comprises the following steps: dissolving the functional monomers and the template molecule strychnine in dimethyl sulfoxide, mixing for 6-24 hours at room temperature, then adding a cross-linking agent ethylene dimethacrylate and an initiator, performing ultrasonic degassing, introducing nitrogen for deoxygenation, sealing and carrying out thermal-initiated polymerization, cleaning and removing the template molecule, wherein the functional monomers contain allyl-beta-cyclodextrin and methacrylic acid. According to the invention, the molecular recognition capability of the beta-cyclodextrin and the molecular recognition capability of the molecular imprinting technology are used for preparing the strychnine molecular imprinting polymer, the proportion of various raw materials are optimized to obtain good recognition effect. The modification of the beta-cyclodextrin has large influence on its molecular recognition effect, therefore allyl which possesses small structure modification to the beta-cyclodextrin can be selected and introduced to a polymerizable unit, and dual recognition capability of the beta-cyclodextrin and the molecular imprinting technology can be fully used to increase the recognition capability. The bifunctional monomers and a plurality of recognition modes are used for raising the recognition capability further.

The invention provides an ethylene-propylene-diene monomer rubber sealing membrane for a water dispenser and a production process thereof. The ethylene-propylene-diene monomer rubber sealing membranefor the water dispenser comprises the following raw materials in parts by weight: 100 parts of an ethylene-propylene-diene monomer, 1-5 parts of zinc oxide, 0.5-2 parts of stearic acid, 0.5-4 parts ofa dispersant, 30-70 parts of carbon black, 6-20 parts of a filler, 10-40 parts of a plasticizer, 1-5 parts of a vulcanizing agent, and 1-5 parts of a vulcanizing auxiliary agent; the vulcanizing agent is 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, and the vulcanizing auxiliary agent is ethylene dimethacrylate. The vulcanizing agent is 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane; the vulcanizingauxiliary agent is ethylene dimethacrylate, and no sulfhydryl group is generated during the reaction; anti-aging agents are not needed, addition of sulfhydryl groups is eliminated from the raw materials; therefore, the product does not produce bitterness, the boiling process is not needed, production efficiency is improved, manpower and material resources are reduced, and production costs is reduced; traditional anti-aging agents are not needed, product performance is superior to performance of traditional rubber products.

The invention discloses a preparation method of a retinervus luffae fructus surface procyanidin molecular imprinting adsorption material. The preparation method comprises: carrying out surface modification on retinervus luffae fructus by using gamma-glycidoxypropyltrimethoxysilane to obtain surface modified retinervus luffae fructus; respectively adding 52-62% of ethanol, 10-15% of ethylene dimethacrylate, 6-10% of N-vinylpyrrolidone, 4.0-8.0% of procyanidin, 10-15% of the surface modified retinervus luffae fructus, and 1.0-3.0% of azobisisobutyronitrile to a reactor; and carrying out stirring dissolving, carrying out a stirring reaction for h in the absence of oxygen, and removing the template molecule from the obtained product by using a methanol and acetic acid mixed solution so as to obtain the retinervus luffae fructus surface procyanidin molecular imprinting adsorption material. According to the present invention, the retinervus luffae fructus surface procyanidin molecular imprinting adsorption material can specifically recognize procyanidin, and further has advantages of high selectivity, good chemical stability, fast adsorption, easy elution, biodegradability, simple process, regenerative ability, environmental protection, and the like.

The invention relates to a separation medium for purifying proteins, and a preparation method thereof, and belongs to the technical field of polymer materials. The separation medium for purifying proteins includes an oil phase and a water phase, wherein the oil phase comprises glycidyl methacrylate, ethylene dimethacrylate, triallyl isocyanurate, divinyl benzene, hydroxypropyl acrylate, toluene, gasoline, isoamyl alcohol and azoisobutyronitrile; and the water phase comprises deionized water, polyvinyl alcohol, gelatin, sodium chloride and methylene blue. The separation medium is prepared by selecting suitable monomers through a polymerization reaction, has the respective advantages of natural saccharide and synthetic polymer separation media, also has the advantages of macro-porous structure, high adsorption rate, large specific surface area and large adsorption capacity, and is separation medium having excellent performances and used for separating and purifying the proteins. The adsorption capacity of the medium provided by the invention to bovine serum albumin (BSA) can reach 171.20mg/g dry resin.

The invention discloses a weather-proof cable material for a wind turbine generator. The weather-proof cable material comprises raw materials in parts by weight as follows: 15-35 parts of nitrile silicone rubber, 20-30 parts of an ethylene-propylene alpha-olefin copolymer, 1-4 parts of a maleic anhydride grafted ethylene-vinyl acetate copolymer, 10-30 parts of nylon modified low-density polyethylene, 2-4 parts of N,N-diisopropylaniline, 10-20 parts of nano-silica, 10-20 parts of kaolin, 20-40 parts of modified rice protein, 40-60 parts of nano calcium carbonate, 5-15 parts of ammonium polyphosphate, 1-2 parts of 4,4'-diaminodicyclohexyl methane, 1-2 parts of bis(tert-butyl dicumyl peroxide), 0.2-0.8 parts of gamma-glycidoxypropyl trimethoxysilane, 1-2 parts of dibenzoyl peroxide, 0.5-1.2 parts of ethylene dimethacrylate, 1-2 parts of 2,6-di-tert-butyl-4-methylphenol, 1-5 parts of melamine pyrophosphate, 2-5 parts of melamine cyanurate and 2-4 parts of a lubricant. The weather-proof cable material has excellent thermal stability and mechanical properties as well as excellent corrosion resistance and ageing resistance.

The invention relates to a hydrogel material with water content of 50%-60% and a preparation method thereof. The hydrogel is prepared by the following method: the hydrogel is prepared by the following raw materials, by mass percent: 79%-94$ of a hydrophilic comonomer hydroxyethyl methylacrylate, 5%-20% of a hydrophilic substance 2-methacryloyloxyethyl phosphorylcholine, 0.2%-5% of a crosslinking agent ethylene dimethacrylate, and 0.1%-2% of an initiator azodiisobutyronitrile; the raw materials are mixed and uniformly stirred; the raw materials are injected into a mould, and the reaction mixture is solidified by a method of heat initiation; and demoulding is carried out, and the unreacted monomers or oligomers are removed to obtain the hydrogel material with the water content of 50%-60%. Compared with the prior art, the hydrogel material with the water content of 50%-60% and the preparation method thereof have the advantages of simple preparation method and easy operation.

The invention provides an activated clay-modified fluorocarbon heat-insulating radiative coating. The activated clay-modified fluorocarbon heat-insulating radiative coating is characterized by being prepared from the following raw materials: trifluorochloroethene, infrared absorption nanometer powder, perfluoromethylvinyl ether, perfluorobutylethyl acrylate, ethylene dimethacrylate, ammonium persulfate, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, glycerol monolaurate, activated clay, hectorite, nanometer tungsten trioxide, propylene glycol, butyl acetate, epoxidized castor oil, polydimethylsiloxane, 2-methyl methacrylate, hydroxyethyl cellulose, n-dodecanol ester, phenethyl phenol polyoxyethylene ether, a proper amount of sodium bicarbonate and a proper amount of deionized water. The activated clay-modified fluorocarbon heat-insulating radiative coating has good heat insulation effect, excellent mechanical performance, excellent adhesion, and superior weatherability, water resistance, stain resistance, scrubbing resistance and the like; and the coating is safe, environment-friendly and wide in an application scope.

The invention discloses a waterproof antibacterial marine coating. Raw materials of the marine coating comprise the following ingredients, by weight, 45-60 parts of a fluorine-silicon modified acrylic emulsion, 30-45 parts of a vinyl acetate emulsion, 4-10 parts of polypropylene fiber, 5-15 parts of silicon nitride, 1-5 parts of graphite oxide, 20-35 parts of liquid petroleum resin, 1-3 parts of ethylene dimethacrylate, 2-5 parts of 3-methacryloxy propyl trimethoxy silane, 0.5-2 parts of tri-n-butyl phosphate, 3-8 parts of oxidized starch, 5-10 parts of polyvinyl alcohol, 1-3 parts of glycol, 1-4 parts of dipropylene glycol mono butyl ether, 0.3-1 part of hydroxy propyl distarch phosphate, 0.3-1.5 parts of sodium gluconate, 0.3-1.5 parts of 2-furan-dimethyl silanol, 5-10 parts of an auxiliary agent and 20-35 parts of water. The waterproof antibacterial marine coating brought forward in the invention has advantages of high hardness, excellent waterproofness and antibacterial property, good comprehensive performance and long service life.

The invention belongs to the technical field of detection material preparation, and relates to a preparation method of an imprinting material for detecting dioctyl phthalate. The method comprises thefollowing steps: synthesizing silica nanoparticles and then modifying the surface of silica to obtain KH-570 modified SiO2, performing mixing with methacrylic acid and Triton X-100, adjusting pH and then adding dioctyl phthalate, ethylene dimethacrylate, toluene and azobisisobutyronitrile, and performing ultrasonic treatment and shaking and then performing standing to obtain a Pickering emulsion;and introducing nitrogen, performing washing and vacuum drying on an obtained reaction product, then adding the product into an aqueous solution of hydrofluoric acid, performing shaking at a constanttemperature, and performing extracting, washing and vacuum drying to obtain the imprinting material. A preparation method of a porous matrix imprinting material with a same micro ''cavity'' structureas a target molecule based on size and shape is provided, the problem of poor selectivity of a traditional direct embedding method is solved, and the imprinting material is successfully applied to high-efficiency detection of dioctyl phthalate in bottled water.