18 results about "Ethyleneglycol dimethacrylate" patented technology

The invention relates to the field of material chemistry on-line detection, in particular to a 1, 2, 4-trichlorobenzene on-line detection material and a preparation method thereof, and provides a film-forming sensitive layer material capable of being coated on the surface of a transducer, and the film-forming sensitive layer material comprises chitosan, a crosslinking component with the content of 0.1-5wt% in terms of glutaraldehyde and magnetic core-shell molecularly imprinted particles after being dried, the magnetic core-shell molecularly imprinted particle contains a ferroferric oxide magnetic inner core, a silicon dioxide middle layer and a molecularly imprinted polymer shell layer, and the shell layer is a cyclodextrin methacrylate and ethylene glycol dimethacrylate copolymer network and takes 1, 2, 4-trichlorobenzene as a template. The material keeps the membrane integrity and long-term stability under the working conditions of circulation and regeneration and also gives consideration to quick response, and the residual 1, 2, 4-trichlorobenzene is controlled to be not greater than 0.10 wt% and the residual glutaraldehyde is controlled to be not greater than 0.5 wt%. The method is used for relieving structural mass transfer contradiction and processing and coating coupling contradiction caused by high filler load, and has online detection application value.

The present application belongs to the technical field of adsorbing materials, and particularly relates to a titanium dioxide molecular imprinting polymer as well as a preparation method and application thereof. The present application uses Sudan red as a template molecule, acrylamide as a functional monomer, ethylene glycol dimethacrylate as a crosslinking agent, and azobisisobutyronitrile as an initiator to construct a cavity structure matching the Sudan red molecule on the surface of the amino-modified titanium dioxide ultrafine particles, and successfully prepares the titanium dioxide molecular imprinting polymer. The material combines the photocatalytic characteristics of the titanium dioxide and the selective recognition ability of the molecular imprinting, can degrade the Sudan red under light, and has a higher photocatalytic efficiency than that of the pure titanium dioxide. The material synthesized through the surface imprinting technology has a three-dimensional cavity complementary to the template molecule, and has a larger adsorption capacity than that of the non-imprinted material. The material realizes the integration of the selective recognition, adsorption and degradation of the Sudan red, and is suitable for complex industrial environments.

The invention discloses a chitosan modified ferroferric oxide / carboxylated multi-walled carbon nanotube-based molecularly imprinted electrochemical sensor as well as a preparation method and application thereof, and relates to the technical field of electrochemical sensing. The invention aims to solve the problems that the existing method for detecting carbendazim is complicated to operate and high in cost and the traditional sensor is poor in selectivity. The invention discloses a molecularly imprinted electrochemical sensor based on chitosan modified ferroferric oxide / carboxylated multi-walled carbon nanotubes. The molecularly imprinted electrochemical sensor comprises a glassy carbon electrode, and a molecularly imprinted polymer and CS-Fe3O4-CMWCNTs which are modified on the surface of the glassy carbon electrode, the molecularly imprinted polymer is prepared by taking carbendazim as a template molecule, methacrylic acid as a functional monomer, ethylene glycol dimethacrylate as a cross-linking agent and azodiisobutyronitrile as an initiator. The molecularly imprinted electrochemical sensor is applied to detection of carbendazim.

This invention relates to an EPDM-based crosslinked rubber material and its preparation method. The rubber material is obtained by vulcanizing raw rubber composed of EPDM rubber, maleic anhydride-grafted polyethylene, a peroxide vulcanizing agent, ethylene glycol dimethacrylate, p-benzoquinone dioxime, lead metal oxide, paraffin oil, a silane coupling agent, and an antioxidant. The EPDM-based crosslinked rubber material obtained by this invention has a double crosslinked structure. The formulation system endows EPDM rubber with excellent physical and mechanical properties, electrical insulation properties, and aging resistance, while also possessing good injection molding performance. This material solves the problems of high prices and long procurement cycles associated with imported finished products, providing an efficient and economical solution for the production of cable accessories.

The present application belongs to the technical field of rectification separation, and provides a rectification separation and purification method for preparing high-purity o-dichlorobenzene. The present application adopts the design of loading surface-modified structured packing in the rectification section of the rectification tower. The structured packing is composed of an alumina ceramic matrix and a cross-linked copolymer layer. The cross-linked copolymer layer contains structural units formed by N-vinyl-2-pyrrolidone, 2-hydroxyethyl methacrylate and ethylene glycol dimethacrylate, and is prepared through a silanization and graft cross-linking polymerization process. The rectification tower is operated under the conditions of a tower top absolute pressure of 0.5-20 kPa and a reflux ratio of 2-6. The present application realizes the efficient separation of o-dichlorobenzene products with a purity of not less than 99.9 wt% from dichlorobenzene isomer mixtures, solves the problem that the structured packing in a low-pressure rectification system cannot simultaneously achieve low pressure drop, large flux and high separation efficiency, and the stability of the surface modification layer in a high-temperature organic vapor environment is insufficient, and has wide industrial application value.

The application discloses a gel polymer electrolyte membrane for lithium batteries and a preparation method and application thereof, and belongs to the polymer electrolyte field. The preparation method provided by the application is that a first prepolymer is obtained by reacting a double-end amino polyethylene glycol with o-phthaldehyde in an inert gas; then tetraethylene glycol dimethyl acrylate and a photoinitiator are added to the first prepolymer to obtain a second prepolymer; a lithium salt is added to the second prepolymer to obtain a precursor slurry; the precursor slurry is subjected to film coating treatment, and the film is subjected to ultraviolet curing treatment and standing treatment in sequence to obtain the gel polymer electrolyte membrane. The dynamic imine bond network is constructed by o-phthaldehyde and the double-end amino polyethylene glycol, the ether oxygen branched chain of the tetraethylene glycol dimethyl acrylate is used to construct a three-dimensional ion transmission channel, and the self-repairing is realized by combining the spontaneous and reversible recombination of the imine bond under the ambient humidity, so that the high ion conductivity of the polymer membrane is ensured to meet the high-frequency charging and discharging requirement.

The application provides an ultrasonic response piezoelectric ionic hydrogel and application thereof, and the hydrogel is formed by cross-linking and solidification of a precursor solution under ultraviolet irradiation; components of the precursor solution include a photosensitive polymer, an ionic polymer, a photoinitiator and a solvent; the photosensitive polymer includes any one or a combination of at least two of polyether F127 diacrylate, polyhydroxyethyl methacrylate, polyethylene glycol dimethyl acrylate, methacrylated gelatin or methacrylated collagen; and the ionic polymer includes any one or a combination of at least two of epsilon-polylysine, polyethyleneimine hydrochloride, polyallylamine hydrochloride, polyquaternary ammonium salt-10 or cationic guar gum. The application uses ultrasonic waves as an external remote driving signal to non-invasively and painlessly activate the piezoelectric ionic effect of the hydrogel, generate detectable periodic voltage and current signals in the hydrogel, and has excellent treatment effect on acne and infected wound repair.

The invention discloses a high-strength acrylic structural adhesive and a preparation method thereof, and belongs to the technical field of structural adhesives. The high-strength acrylic structural adhesive comprises a component A and a component B, the component A comprises an acrylate monomer, a first cross-linking agent, an antioxidant, a polyacrylate elastomer, a polymerization inhibitor, a reducing agent and modified mesoporous silica; the component B comprises an acrylate monomer, a first cross-linking agent, a polyacrylate elastomer, a polymerization inhibitor, an oxidizing agent and modified mesoporous silica; the acrylic ester monomers comprise ethyl methacrylate and lauryl methacrylate; 2, 4, 6-triallylphenol is adopted as the antioxidant; the polyacrylate elastomer is obtained by carrying out composite reaction on 2-acrylamido-2-methyl-1-propane sulfonic acid polymer particles, ethyl acrylate, vanillin methacrylate, an initiator and a second cross-linking agent; the second cross-linking agent is prepared from ethylene glycol dimethacrylate and triallyl phosphite ester.

This invention discloses a magnetic molecularly imprinted polymer, its preparation method, and its applications. First, Fe3O4 nanoparticles are prepared via co-precipitation. Then, the Fe3O4 nanoparticles are surface-modified with tetraethyl orthosilicate and 3-(trimethoxysilyl)propyl methacrylate to obtain Fe3O4@SiO2@CH2=CH2 nanoparticles. Using these as the magnetic core of the molecularly imprinted polymer, hexabromocyclododecane is used as the template molecule, 4-vinylpyridine as the functional monomer, azobisisobutyronitrile as the initiator, ethylene glycol dimethacrylate as the crosslinking agent, and acetonitrile as the porogen, to prepare the magnetic molecularly imprinted polymer. The magnetic molecularly imprinted polymer prepared by this invention can rapidly separate hexabromocyclododecane under an external magnetic field with good specificity, exhibiting excellent adsorption and desorption effects. It has low preparation cost, can be recycled, and has good application prospects.

Disclosed herein is a solid-state composite polymer electrolyte membrane including a solid-state electrolyte layer and a cured electrolyte layer disposed thereon. The solid-state electrolyte layer includes poly(vinylidene fluoride-co-hexafluoropropylene), lithium bis(trifluoromethanesulfonyl)imide, succinonitrile, and aluminum-doped lithium lanthanum zirconium oxide that is present from 50 wt % to 80 wt % based on 100 wt % of the solid-state electrolyte layer. The first cured electrolyte layer is formed by subjecting a first composition including a first initiator and a first component that includes an acrylic material, lithium bis(trifluoromethanesulfonyl)imide and succinonitrile to a first polymerization reaction. The acrylic material is selected from ethoxylated trimethylolpropane triacrylate, poly(ethylene glycol) dimethacrylate, poly(ethylene glycol) methacrylate, and combinations thereof. An all-solid-state lithium ion battery including the solid-state composite polymer electrolyte membrane is also disclosed.

This invention relates to the field of coatings, and discloses a hydrophilic anti-fog transparent coating for a plastic substrate and its preparation method. The hydrophilic anti-fog transparent coating comprises the following raw materials: 40-80% linear acrylic copolymer, 0.1-2% active monomer, 0.05-0.2% photoinitiator, 0-0.5% defoamer, 0-0.5% leveling agent, and 20-60% solvent. The linear acrylic copolymer is copolymerized from acrylate soft monomers, hard monomers containing olefin bonds, and functional monomers; the functional monomers contain olefin bonds and hydrophilic groups; the active monomer is one or more of ethylene glycol diacrylate, ethylene glycol dimethacrylate, polyethylene glycol diacrylate, and butanediol diacrylate. The hydrophilic anti-fog coating of this invention not only has excellent anti-fog effect, but also good adhesion to the plastic substrate, and exhibits long-lasting water resistance, high temperature and humidity resistance, and high transparency.

The invention relates to the technical field of medical materials, and discloses a deep eutectic eutectoid gel coating with antibacterial, anti-adhesion and anti-demineralization functions as well as a preparation method and application of the deep eutectic eutectoid gel coating. The preparation method comprises the following steps: preparing a deep eutectic solvent by mixing SBMA and glycerol or glycerol and gallic acid; the preparation method comprises the following steps: adding a cross-linking agent ethylene glycol dimethacrylate and an initiator into a deep eutectic solvent, uniformly mixing, coating on a PETG substrate, and curing under the action of the initiator to form a continuous and compact deep eutectic eutectoid gel coating. A dense hydrogen bond network is constructed through a deep eutectic system formed by SBMA and glycerin, the hydrophilicity and lubricity of the coating are remarkably improved, adhesion of bacteria and protein in the oral cavity can be effectively reduced, cleanliness of the surface of the appliance is kept, a feasible and efficient technical path is provided for long-term biological functionalization of the invisible appliance, and the application prospect is wide. Meanwhile, the coating can be extensively applied to the fields of other oral medical instruments and biological functional coatings.

The invention provides a self-cleaning fluorine-containing copolymer with adjustable color-changing response time, a film and a preparation method and application of the self-cleaning fluorine-containing copolymer and the film, and belongs to the technical field of functional film materials. The self-cleaning fluorine-containing copolymer disclosed by the invention is prepared from the following raw materials: N-(2-methacryloyloxyethyl)-4-bromine-1, 8-naphthalimide, methyl methacrylate, hydroxyethyl methylacrylate, dodecafluoroheptyl methacrylate and ethylene glycol dimethacrylate. According to the self-cleaning fluorine-containing copolymer with adjustable color-changing response time, multi-stage luminescence evolution of blue light, red light and near white light under ultraviolet light is realized for the first time, the color-changing response time of each stage can be accurately controlled by adjusting the composition of the copolymer, and the technical bottlenecks that an existing color-changing material is single in response mode and uncontrollable in time are solved; according to the invention, the self-cleaning characteristic of the perfluoro side chain and the photoresponse color-changing function of naphthalimide are organically fused, so that the film has the self-cleaning performance and the visual feedback function of environmental stimulation.

An immobilized 4,5-dicyanoimidazole, and a preparation method and application thereof. The immobilized 4,5-dicyanoimidazole is obtained through a free radical copolymerization reaction of a first comonomer, a second comonomer, and a third comonomer. The first comonomer is divinyl benzene or ethylene glycol dimethacrylate. The second comonomer is styrene or methyl methacrylate.

This invention belongs to the field of sealing material technology, specifically relating to an anaerobic sealing liquid and its preparation method and application. The anaerobic sealing liquid comprises the following components by weight: 20-50 parts monomer, 0.5-2 parts initiator, 0.1-1 parts accelerator, and 0.1-1 parts co-accelerator. The monomer includes one or more of polyurethane acrylate, bisphenol A epoxy acrylate, (4) ethylene oxide bisphenol A dimethacrylate, triethylene glycol dimethacrylate, hydroxyethyl methacrylate, and hydroxypropyl methacrylate. Due to the rational formulation of monomers and various additives, the obtained anaerobic sealing liquid has a fast curing rate and excellent airtightness, pull-out resistance, storage stability, and corrosion resistance, meeting the airtightness requirements of pipe connection technology.

The application discloses basalt fiber composite material with self-healing performance and a preparation method thereof, and belongs to the technical field of fiber reinforced composite materials.The basalt fiber composite material is prepared by the following steps: placing desized basalt fiber fabric which is functionalized by vinyl into a solution of 1-vinyl-3-ethyl imidazolium bis-trifluoromethylsulfonylimide monomer, azobis isobutyronitrile and ethylene glycol dimethacrylate to obtain basalt fiber fabric which is modified by polyionic liquid; placing the basalt fiber fabric into a solution of urea and carboxymethyl cellulose to obtain basalt fiber fabric which is modified by carbon spheres; then placing the basalt fiber fabric into a suspension of aminated carbon nanotubes to obtain basalt fiber fabric which is modified by carbon nanotubes; connecting silver wires; laying a low-density polyethylene sheet; and performing electric heating and pressure to prepare the basalt fiber composite material.The basalt fiber fabric is modified by conductive materials, and the basalt fiber fabric is endowed with electric heating performance, so that the mechanical performance of the basalt fiber composite material is improved, and the self-healing performance of the basalt fiber composite material is realized.

This invention discloses an enzyme-catalyzed stabilized teeth whitening and bleaching composite composition and its preparation method, relating to the field of teeth whitening technology. The composition comprises three components: a whitening gel, a catalyst, and a light-cured gingival barrier resin, which synergistically achieve teeth whitening and bleaching. The whitening gel contains hydrogen peroxide, carbomer, propylene glycol, a stabilizer, water, and sodium hydroxide. The catalyst contains propylene glycol, catalase, carbomer, glycerol, sodium hydroxide, sodium benzoate, purified water, and fragrance. The resin contains polyether polyurethane methacrylate, 1,6-hexanediol dimethacrylate, triethylene glycol dimethacrylate, camphorquinone, ethyl p-dimethylaminobenzoate, tert-butylhydroquinone, fumed silica, pigment, fragrance, and MIG-type silica. This invention utilizes enzyme catalysis to achieve natural-looking whitening; the whitening gel is stable during storage and does not easily dilute or release water; the resin cures gently and has a flexible texture; and the process is controllable, making it suitable for industrial production and clinical teeth whitening treatment.

This invention relates to the field of online detection in materials chemistry, specifically an online detection material for 1,2,4-trichlorobenzene and its preparation method. It provides a film-forming sensitive layer material that can be coated onto the surface of a transducer. After drying, it comprises chitosan, a crosslinking component (calculated as 0.1–5 wt% of glutaraldehyde), and magnetic core-shell molecularly imprinted particles. The magnetic core-shell molecularly imprinted particles contain a magnetite magnetic core, a silica intermediate layer, and a molecularly imprinted polymer shell. The shell is a copolymer network of cyclodextrin methacrylate and ethylene glycol dimethacrylate, using 1,2,4-trichlorobenzene as a template. The material maintains membrane integrity and long-term stability while ensuring rapid response under circulation and regeneration conditions, and controls residual 1,2,4-trichlorobenzene to no more than 0.10 wt% and residual glutaraldehyde to no more than 0.5 wt%. This material alleviates structural mass transfer contradictions and the coupling contradiction between processing and coating caused by high filler loading, and has value for online detection applications.