159 results about "Ethyleneglycol dimethacrylate" patented technology

The invention discloses a magnetic cadmium ion-imprinted polymer and a preparation method thereof. The magnetic cadmium ion-imprinted polymer is prepared by taking vinyl-modified Fe3O4@SiO2 as a magnetic carrier, Cd<2+> as a template, a combination of any two of methacrylic acid, acrylamide and vinyl pyridine as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a cross-linking agent, and azodiisobutyronitrile (AIBN) as an initiator. The magnetic cadmium ion-imprinted polymer is capable of carrying out enrichment and separation on trace cadmium in an agricultural product sample, and is high in detection sensitivity and accuracy; furthermore, the magnetic cadmium ion-imprinted polymer has the advantages of being simple in preparation method and low in cost and operation requirement, having higher selectivity for template ions, and the like; the product also can be rapidly separated in presence of an external magnetic field, so that the tedious operation such as centrifugation and filtration are avoided, and enrichment and separation efficiencies are improved; the magnetic cadmium ion-imprinted polymer has a wider and good application prospect in the field of detection of food and agricultural product samples.

The invention discloses a preparation method for a cellulose hollow magnetic imprinted composite microsphere adsorbent, and belongs to the technical field of preparation of environment-friendly functional material. The method comprises the following steps: preparing ferroferric oxide nano-particles by using a co-precipitation method, and performing hydrophobic modification on the surfaces of the ferroferric oxide nano-particles; extracting nano cellulose from medical degreasing cotton by using an acid hydrolysis method; by using a NCCs water solution as an external water phase, using template molecules, namely bifenthrin, a functional monomer, namely methacrylic acid, a cross-linking agent, namely ethylene glycol dimethacrylate, a solvent, namely methylbenzene, an initiator, namely azodiisobutyronitrile, and hydrophobic Fe3O4 as an oil phase, and using deionized water as an internal water phase to prepare an oil-wrapped and water-wrapped Pickering dual-emulsion, and performing thermal initiation polymerization to prepare the cellulose hollow magnetic imprinted composite microsphere adsorbent for selectively identifying and adsorbing BF in a solution. An adsorption test result shows that the prepared imprinted adsorbent has good adsorption capacity, good dynamic performance and selective BF identification performance.

The invention discloses a method for preparing an extraction probe by means of micro-solid phase extraction based on a polymer (methacrylic acid-ethyl glycol dimethacrylate), belonging to the field of micro-solid phase extraction. The extraction probe comprises a hollow fiber membrane and extracting filler; a membrane bag stops macromolecules and granular impurities by the hollow fibre membrane; the extraction material adsorbs the target micromolecular compounds; trace of organic solvent is used to resolve the target compounds. The extraction filler is polymer (methacrylic acid-ethyl glycol dimethacrylate) with acidic side groups and a hydrophobic skeleton, and has relatively strong adsorption performance for target substances in water; the hollow fibre membrane is a polypropylene membrane that prevents macromolecules and granular impurities form entering so as to eliminate interference of a matrix to a great extent. Therefore, the micro-solid phase extraction has purification function for samples and is used for direct analysis of samples with complicate matrixes; and the analysis range of a substrate is expanded.

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 relates to a preparation method of a microzyme magnetic blotting composite microsphere adsorbent, and belongs to the technical field of environmentally-friendly functional material preparation. The method comprises the following steps: preparing ferriferrous oxide nanoparticles through a coprecipitation process, carrying out hydrophobic modification on the surface of the nanoparticles, preparing a stable Pickering emulsion with an oleic acid modified microzyme aqueous solution as a water phase, cyhalothrin as a template molecule, methacrylic acid and 4-vinylpyridine as functional monomers, ethylene glycol dimethacrylate as a cross-linking agent, dimethyl 2,2'-azobis(2-methylpropionate) as an initiator and hydrophobic Fe3O4 as an oil phase, and carrying out thermal-initiated polymerization to prepare the microzyme magnetic blotting composite microsphere adsorbent. Blotting microspheres obtained in the invention have a good magnetic stability, and the adsorption balance, the dynamics and the selection identification performance of the adsorbent are researched through static state adsorption experiments. Results show that the blotting adsorbent prepared in the invention has a good adsorption capacity, fast adsorption kinetics, and has a selection identification performance on LC.

The invention relates to a controllable preparation method of a magnetic halloysite surface nano imprinting composite material and belongs to the technical field of the preparation of environmental function materials. The method is as below: introducing trivalent iron ions into an inner cavity and outer surface of a halloysite nanotube through a dipping method, and preparing magnetic halloysite by ethylene glycol reduction under high temperature; conducting vinyl functionalization modification on the surface by using 3-(methacryloyloxy) propyl trimethoxy silane; conducting precipitation polymerization on the surface of the vinyl modified halloysite nanotube by using acetonitrile as a solvent, tetracycline as a template moleculue, methacrylic acid as the functional monomer, ethylene glycol dimethacrylate as a crosslinking agent and azodiisobutyronitrile as an initiator; removing the template molecule through Soxhlet extraction by a mixed solution of methanol and acetic acid, so as to obtain the magnetic halloysite surface nano imprinting composite material, which can be applied to tetracycline selective recognition and magnetic separation in water environment. The molecular imprinting polymerization layer coated on the surface of the magnetic halloysite has uniform thickness, and the size can be changed by adjusting the amount of polymerization monomers.

The invention relates to a halogen free releasable semiconductive insulation shielding material and a production method of the halogen free releasable semiconductive insulation shielding material, which belongs to the technical field of cable material production. The production method provided by the invention comprises the fowling steps: setting an internal mixer at the temperature range of 90-100DEG C; mixing EVA (ethylene-vinyl acetate copolymer), EPDM (ethylene-propylene-diene monomer), coupling agent-propyl trimethoxy silane, microstalline wax, glycol dimethacrylate, antioxidant, carbon black and copper inhibitor in the internal mixer for 8-10min; molding through hot cutting after extrusion by a mixing mill; and finally drying by air. According to the invention, the production process is simple and reasonable, the production and control is convenient, and the product stability is good; and the production method provided by the invention are suitable for insulating layer shielding materials produced at medium-high voltage power cable (6KV or above) and can improve electrical performance and safety of the cable in long-time running.

The present invention relates to a preparation method for a magnetic carbon microsphere surface cephalexin molecular imprinted adsorbent material. The method comprises: taking a walnut shell as a carbon source to prepare a magnetic carbon microsphere; carrying out ethylene functionalized modification on the surface of the magnetic carbon microsphere by use of 3-(methacryloxy)propyl trimethoxysilane; taking cephalexin (CFX) as a template molecule, methacrylic acid (MAA) as a functional monomer, ethylene alcohol dimethacrylate (EGDMA) and N, N- methylene bisacrylamide (BIS) as a crosslinking agent, and cetane as a porogenic diluent and an organic solvent to prepare a magnetic carbon microsphere surface imprinted adsorbent. The magnetic carbon microsphere surface imprinted adsorbent material prepared by the method disclosed by the invention is low in cost and simple in preparation, and has high recognition, high selectivity, and high separation enrichment capacity on target molecules, and a high absorption speed.

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 preparation of a core-shell ultraviolet fluorescence molecularly-imprinted material and application of the material in sulfanilamide detection. By using sulfamethyldiazine as a template molecule, the synthesized lysine-based fluorescence molecule as the functional monomer, ethylene glycol dimethyl acrylate as a crosslinking agent and azodiisobutyronitrile as an initiator, the lysine-framework fluorescence functional monomer with FMOC fluorophore is subjected to surface polymerization to obtain an about 10nm imprinted layer on the monodisperse methylacryloylated silicon ball surface with the diameter of 100nm. A Soxhlet method is utilized to remove the imprinted template molecule in the material to obtain the fluorescence molecularly-imprinted sensing material with fluorescence quenching responsiveness to the template molecule; the molecularly-imprinted material has the advantages of favorable dispersity, high response speed and stable optical properties, and is applicable to determining the sulfamethyldiazine content in the marked milk; and the method can indirectly convert the ultraviolet absorption signal of the analyte into a sensitive fluorescence signal, thereby enhancing the detection sensitivity and obtaining favorable recovery rate.

The invention discloses a polypropylene material resistant to aging and impact at low temperature as well as a preparation method of the polypropylene material. The polypropylene material comprises the raw materials such as polypropylene resin, butadiene rubber, an ethylene-vinyl acetate copolymer, diethyl phthalate, triethylene glycol di-2-ethylhexoate(triglycol dioctate), dilauryl thiodipropionate, dibasic lead stearate, hexamethylenetetramine, tristearin, cobalt iso-octoate, ethyleneglycol dimethacrylate, a silane coupling agent KH550, erucicamide, hollow glass microspheres, andalusite powder and precipitated white carbon black. The butadiene rubber and the ethylene-vinyl acetate copolymer are added into polypropylene resin, so that the cold resistance of the polypropylene material is improved, and the resistance to impact at low temperature is enhanced; the hollow glass microspheres and the andalusite powder are added for combined utilization, so that the tensile strength and impact strength can be synergistically improved; through addition of triethylene glycol di-2-ethylhexoate(triglycol dioctate) and the like, the cold resistance of the polypropylene material is further improved; through addition of nanometer titanium phosphate, the aging resistance of the polypropylene material is improved under the joint action of zinc oxide, precipitated white carbon black and nanometer titanium phosphate.

The invention belongs to the technical field of modification of dental resin materials, and provides high-strength antibacterial composite resin for dental restoration and a preparation method thereoffor solving the problems of stress fracture and secondary caries during the service of composite resin. The composite resin consists of inorganic filler and a resin matrix by adding an initiator, andthe inorganic filler is zinc-doped mesoporous silica beads; the resin matrix consists of a main monomer bisphenol A-glycidyl methacrylate and a diluents triethylene glycol dimethacrylate; and the initiator consists of a main initiator camphorquinone and an auxiliary initiator ethyl 4-N,N-dimethylaminobenzoate. The antibacterial properties of dental resin can be given by utilizing a mesoporous material to antibacterial components; the mechanical strength of the dental resin can be enhanced through the mechanical interlocking at the interface part of the mesoporous channels of the inorganic filler and the dental resin; the inorganic filler is non-toxic in components and high in safety; and the used inorganic filler can be prepared through a one-step reaction method, so that the composite resin and preparation method thereof are simple and easy in operate and very easy to promote.

The invention discloses a resin-type interior wall waterproof coating which is prepared by the following raw materials by weight: 5-10 parts of chlorinated polypropylene resin, 2.5-4.6 parts of pure propylene ester emulsion, 0.2-0.8 part of formaldehyde, 2.3-3.3 parts of tributyl phosphate, 1.2-2.5 parts of lithium magnesium silicate, 2.5-5.2 parts of polyoxyethylene polyoxypropylene block copolymer, 1.2-2.5 parts of octadecyl trimethyl ammonium chloride, and 3.5-7 parts of ethyleneglycol dimethacrylate. Compared with waterproof coatings, the coating of the invention has excellent permeability and waterproofness, can penetrate into concrete for concretion into an impermeable layer, thus effectively prevent contact of reinforced concrete with harmful substances, and realizes waterproof, moistureproof, and anticorrosion effects; the coating of the invention has excellent aging resistance and chemical corrosion resistance, and has very strong protection effect on reinforced concrete; the concreted body is non-toxic and free of pollution, and has good mechanical properties.

The invention provides a preparation method of resin microspheres, which comprises the following steps: preparing 5-chloromethyl-8-hydroxyquinoline by using 8-hydroxyquinoline as a raw material, reacting with N,N'-methylene bisacrylamide to obtain an alkylated monomer, and carrying out a cross-linking polymerization reaction on the alkylated monomer, hydroxyethyl methacrylate, ferulic acid and ethylene glycol dimethacrylate to obtain resin microspheres; the invention also provides a method for treating printing and dyeing wastewater by using the resin microspheres. The method specifically comprises the following steps: rough filtration, pH adjustment, coagulating sedimentation, sand filtration, oxidative degradation, heavy metal adsorption, activated carbon decolorization, pH adjustment again and discharge or reuse. The resin microsphere disclosed by the invention has a three-dimensional network structure, has strong oxidation resistance, can efficiently degrade organic matters when being applied to printing and dyeing wastewater treatment, does not cause secondary pollution, has high heavy metal ion adsorption capacity, is easy to desorb and recycle, and can be better applied to industrial wastewater treatment.

The invention discloses a high-affinity medical antibacterial glycolide material. The material is prepared from, by weight, 45-55 parts of polyglycollide, 40-50 parts of N,N'-ethylene hisstearamide, 40-50 parts of collagen, 35-45 parts of 1,6-ethylene glycol dimethacrylate, 25-35 parts of N,N'-ethylene hisstearamide, 20-26 parts of bi-maleamidic acid, 18-22 parts of polyvinyl alcohol condensed glyoxal, 10-12 parts of glass fiber, 10-12 parts of fimbrin, 5-8 parts of wollastonite powder, 4-6 parts of nano titanium dioxide, 4-6 parts of aluminum silicate ceramic fiber, 3-5 parts of acetyl triethyl citrate, 2-4 parts of stabilizer and 2-4 parts of coupling agent. The prepared high-affinity medical antibacterial glycolide material is good in biocompatibility and antibacterial performance, has certain flexibility and mechanical strength and can meet industrial requirements. Meanwhile, the invention further discloses a corresponding preparation method.

The invention discloses a molecularly imprinted polymer for m-p-cresol separation and a preparation method of the polymer. The molecularly imprinted polymer for m-p-cresol separation is synthesized by taking 4-vinyl pyridine, acrylamide and alpha-methyl methacrylate as functional monomers, glycol dimethacrylate as a cross-linking agent, azo diisobutyronitrile as an initiator and acetonitrile as a solvent.

The invention provides bisphenol A imprinted Pickering emulsion polymer microspheres, preparation and applications thereof. The preparation method comprises: dissolving a template molecule bisphenol A (BPA), a functional monomer 4-vinylpyridine (4-VP), a cross-linking agent ethyleneglycol dimethacrylate (EGDMA) and an initiator azobisisobutyronitrile (AIBN) in a pore forming agent toluene, introducing high-purity nitrogen gas to remove oxygen gas, dispersing SiO2 nanoparticles in an aqueous solution of Triton X-100, mixing the two obtained solutions, violently vibrating, introducing nitrogen gas to remove oxygen gas, sealing, polymerizing for 16 h at a temperature of 70 DEG C, removing the SiO2 on the surface of the obtained SiO2-polymer composite material through hydrofluoric acid, and removing the template molecule bisphenol A (BPA) through Soxhlet extraction so as to complete the preparation of the BPA imprinted Pickering emulsion polymer microspheres. According to the present invention, the molecular imprinting polymer microspheres have good adsorption capacity for BPA, provide good selectivity to BPA and structural analogues thereof, and show good type selectivity and good purification capacity when the molecular imprinting polymer microspheres adopted as the solid phase extraction filler are applied in the selective separation experiments of the eight bisphenol substances in the human urine sample.

The invention provides a high-temperature-resistant gel plugging agent for an oil-based drilling fluid as well as a preparation method and application of the high-temperature-resistant gel plugging agent. The gel plugging agent is prepared from the following raw materials in parts by weight: 15-30 parts of gel, 2-7 parts of a cross-linking agent, 0.3-1 part of an initiator and 60-80 parts of baseoil, wherein the gel is a combination of two or more than three of diethylene glycol dimethacrylate, pentanediol diacrylate, hexadecyl methacrylate and polyurethane resin, and the cross-linking agentis two or three of dibutyl ammonium oleate, zinc acrylate and divinyl benzene. The plugging agent disclosed by the invention enters a crack under the action of pressure difference and is automaticallygelatinized to form high-strength and high-temperature-resistant gel, so that the crack is plugged; the plugging agent is good in oil-based drilling invasion resistance, can act on cracks within a certain width range, has a good plugging effect on malignant leakage, and has the advantages of being resistant to high temperature, high in volume expansion speed, high in gel forming strength, controllable in gel forming time and the like.

The invention relates to preparation of alkylphenol (Including bisphenol A, octyl phenol and nonyl phenol) composite template molecularly-imprinted polymer and application of the polymer herein in alkylphenol removal and analysis. Graphene oxide is prepared by modified Hummer process; iron oxide particles are loaded on the surface of the graphene oxide and covered with mesoporous silicon before dual bonds are grafted; the obtained material is a carrier; bisphenol A, octyl phenol and nonyl phenol jointly act as templating molecules; styrene-4-carboxylic acid, ethyleneglycol dimethacrylate and 2,2'-azodiisobutyronitrile are used as a functional monomer, crosslinking agent and initiator respectively; polymerizing is carried out at 60 DEG C. The templating molecules are eluted with a mixed solution of methanol and acetic acid (9:1, V:V); drying is performed in vacuum to obtain the alkylphenol composite template molecularly-imprinted polymer. Specific recognition of molecular impression andgood separation convenience of a magnetic material are combined; bisphenol A, octyl phenol and nonyl phenol in water can be selectively adsorbed at the same time, the adsorbing capacities reach 16.81mg/g, 35.97 mg/g and 61.73 mg/g respectively, adsorbing balance occurs within 30 min, the material herein can be reused 5 times and more and is suitable for removing and detecting alkylphenols.

The invention relates to the field of anti-fogging products and provides an antibacterial anti-fogging wet tissue and a preparation method of the antibacterial anti-fogging wet tissue. The antibacterial anti-fogging wet tissue has strong antibacterial property and long anti-fogging time. The antibacterial anti-fogging product is prepared by uniformly spraying an antibacterial anti-fogging liquid on a non-woven fabric; the antibacterial anti-fogging liquid comprises the following components in percentage by weight: 30-50% of polyacrylic acid modified nanoparticle liquid, 0.05-0.1% of kathan and the rest of water; the polyacrylic acid modified nanoparticle liquid comprises the following components in percentage by weight: 1-20% of silica nanoparticles, 0.01-2% of KH-560, 0.01-5% of AEO-23 (Fatty Alcohol-polyoxyethylene Ether), 0.1-10% of acrylic acid, 0.001-1% of EGDMA (Ethyleneglycol Dimethacrylate), 0.01-2% of ammonium persulfate and the rest of water.

The invention provides abrasion-resisting acrylate modified calcium carbonate packing. The abrasion-resisting acrylate modified calcium carbonate packing is characterized by being prepared from the following raw materials in parts by weight: 200 parts of nano calcium carbonate, 6-8 parts of sodium lignin sulfonate, 20-25 parts of melamine resin, 10-12 parts of talcum powder, 6-8 parts of lanthanum oxide, 12-15 parts of sodium p-vinylbenzenesulfonate, 5-6 parts of sodium dibutylsulfosuccinate, 4-5 parts of cetearyl sodium sulfate, 25-30 parts of methyl trifluoroacrylate, 10-12 parts of ammonium persulfate, 35-45 parts of ethyleneglycol dimethacrylate, 12-15 parts of 5-hydroxylevulinic acid, a proper amount of methanol and a proper amount of de-ionized water. The calcium carbonate packing provided by the invention has the advantages of fineness and smoothness, uniformity, high whiteness, low abrasion rate and good oleophobic property and optical property and the like.