20 results about "Polyglycidyl methacrylate" patented technology

The invention discloses an interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material and a method. The interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material comprises a maleic anhydride grafted polypropylene matrix and a core-shell structure filler dispersed in the maleic anhydride grafted polypropylene matrix, the core-shell structure filler comprises hydroxylated boron nitride nanoparticles covalently grafted on a polymer shell layer on the surface of the core-shell structure filler; the polymer shell layer is polyglycidyl methacrylate; the epoxy group of the polymer shell layer reacts with the anhydride group of the maleic anhydride grafted polypropylene matrix to form a covalent bond. The invention has the characteristics of strong interface bonding force, uniform filler dispersion, and excellent comprehensive electrical properties and processability.

The invention discloses a degradable high-strength plastic bag and a preparation method thereof, and relates to the technical field of plastic bag preparation. The degradable high-strength plastic bag at least comprises the following raw materials in parts by mass: 40-60 parts of polylactic acid, 20-35 parts of poly (adipic acid) / butylene terephthalate, 5-15 parts of modified nano calcium carbonate, 3-8 parts of modified wood fibers, 6-8 parts of chitosan grafted polyglycidyl methacrylate nanoparticles, 0.5-2 parts of a lubricant, 0.3-1 part of an antioxidant and 2-5 parts of a degradation accelerator. And 0.5 to 1.5 parts of an ultraviolet stabilizer. According to the degradable high-strength plastic bag prepared by the preparation method disclosed by the invention, the polylactic acid and the poly (butylene adipate-co-terephthalate) are used as base materials, the modified nano calcium carbonate and the modified fibers are used as fillers, and the chitosan grafted polyglycidyl methacrylate nanoparticles are used as a compatilizer, so that the balance of high strength and degradability is realized; the prepared degradable high-strength plastic bag can be used as a high-performance flexible packaging material.

The invention discloses a strong cation exchange chromatography medium as well as a preparation method and application thereof, and belongs to the technical field of biological separation and purification. The structural formula of the strong cation exchange chromatography medium is shown in the specification, the preparation method comprises the following steps: (1) synthesizing epoxy porous polymer microspheres; (2) carrying out an epoxy-sulfydryl click reaction with sulfydryl sulfonate; and (3) hydrolyzing the residual epoxy group to obtain the epoxy resin. The strong cation exchange chromatography medium has the advantages of high protein loading capacity, low non-specific adsorption, good mechanical property and the like, the preparation process is simple, special hydrophilic modification is not needed, and the process is simplified, the industrial production period is shortened and the production cost is reduced under the condition of meeting the conventional protein elution condition. And meanwhile, the high efficiency of the click reaction can meet the characteristics of high loading capacity, good biocompatibility and the like of the chromatography medium.

This invention relates to the field of functional fabric technology, specifically to a hybrid fiber with phase change temperature control fiber and its preparation method. The raw materials for preparing the hybrid fiber, by weight, consist of 70-80 parts polymer matrix, 13-21 parts phase change material, 3-5 parts polyethylene glycol-b-polyglycidyl methacrylate (PEG-b-GMA), 0.6-1.5 parts KH-580, 0.3-1 parts thermally conductive reinforcing phase, and 0.5-1.2 parts functional auxiliaries; the thermally conductive reinforcing phase is micron-sized boron nitride modified with a silane coupling agent using a wet process. This invention, through the synergistic effect of PEG-b-GMA and the anchoring agent KH-580, can simultaneously solve the problems of poor dispersion, easy leakage of phase change material, and poor mechanical properties in existing blended spinning phase change temperature control fibers. The improved fiber properties can meet the requirements of industrial weaving. This invention uses conventional blended spinning processes, requires no additional specialized equipment, has controllable auxiliary agent costs, is simple to operate, and is easy to implement on existing production lines.

The invention discloses a method for synchronously separating ovalbumin, ovotransferrin and lysozyme from egg white, which comprises the following steps: firstly, adsorbing ovalbumin from egg white loading liquid by taking chitosan-polybutyl methacrylate nanocrystal gel with an anion exchange function as a primary separation medium, and carrying out gradient elution to obtain ovalbumin; taking a primary separation loading effluent as a secondary separation loading solution; hydroxyethyl methylacrylate-polyglycidyl methacrylate nanocrystal gel with a cation exchange function is taken as a secondary separation medium to adsorb ovotransferrin and lysozyme from a secondary separation loading solution, gradient elution is performed by gradually increasing salt concentration, and separation of ovotransferrin and lysozyme is realized. The method provided by the invention can realize synchronous separation of ovalbumin, ovotransferrin and lysozyme, has the advantages of high separation efficiency, simplicity and convenience in operation, low energy consumption and the like, and is suitable for industrial large-scale production, and the separation medium can be repeatedly used.

A multi-layered film includes (A) an oxygen barrier layer; (B) a moisture barrier layer disposed on and in direct contact with (A) the oxygen barrier layer; and (C) an adhesive layer disposed on and in direct contact with (B) the moisture barrier layer. (A) The oxygen barrier layer includes (a) modified polyethylene resin and (e) ethylene-vinyl alcohol copolymer. (B) The moisture barrier layer includes (b1) first poly(ethylene-co-1-octene) having a melting index of 20 g / 10 min to 40 g / 10 min at 190° C. and (b2) second poly(ethylene-co-1-octene) having a melting index of 1 g / 10 min to 10 g / 10 min at 190° C. (C) The adhesive layer includes poly(ethylene-co-methacrylate-co-glycidyl methacrylate) having a melting index of 1 g / 10 min to 10 g / 10 min at 190° C.

The present invention relates to a laminate having a structure in which a fluororesin layer and a vinyl chloride resin layer are laminated with an adhesive layer in between, and provides a new laminate in which the composition of the adhesive layer can be improved to increase the delamination strength between the fluororesin layer and the vinyl chloride resin layer. [Solution] The laminate comprises a fluororesin layer with fluororesin as the main component resin, an adhesive layer, and a vinyl chloride resin layer with vinyl chloride resin as the main component resin, wherein the adhesive layer contains polyglycidyl methacrylate (PGMA), and the PGMA content is 20 to 60% by mass relative to 100% by mass of the resin constituting the adhesive layer.

The invention relates to preparation of carboxyl-functionalized superparamagnetic composite microspheres and application of the carboxyl-functionalized superparamagnetic composite microspheres in chemiluminescence immunodetection, the surfaces of the carboxyl-functionalized superparamagnetic composite microspheres are chemically modified with carboxyl functional groups, the carboxyl-functionalized superparamagnetic composite microspheres are coupled with an antibody to obtain immunomagnetic spheres, and the average particle size of the immunomagnetic spheres is 1.3-1.4 microns. The preparation method comprises the following steps: by taking glycidyl methacrylate as a monomer, preparing polyglycidyl methacrylate microspheres by adopting a dispersion polymerization method; after sulfonic acid groups are introduced to the surfaces of the microspheres, magnetic Fe3O4 nanoparticles are loaded through an in-situ precipitation method; coating the magnetic microspheres with silica gel; finally, a carboxyl functional group is introduced through surface polymerization. The microspheres are uniform in particle size, high in magnetic responsiveness, good in dispersion effect and high in stability. The microsphere can be used as a solid phase carrier in chemiluminescence immunoassay, realizes high-sensitivity and high-specificity chemiluminescence detection of a target object through EDC / NHS activation and antibody covalent coupling, can meet clinical use requirements, and has a wide application prospect in the field of biomedical detection.

A multi-layered film includes (A) an oxygen barrier layer; (B) a moisture barrier layer disposed on and in direct contact with (A) the oxygen barrier layer; and (C) an adhesive layer disposed on and in direct contact with (B) the moisture barrier layer. (A) The oxygen barrier layer includes (a) modified polyethylene resin and (e) ethylene-vinyl alcohol copolymer. (B) The moisture barrier layer includes (bi) first poly(ethylene-co-1-octene) having a melting index of 20 g / 10 min to 40 g / 10 min at 190° C. and (b2) second poly(ethylene-co-1-octene) having a melting index of 1 g / 10 min to 10 g / 10 min at 190° C. (C) The adhesive layer includes poly(ethylene-co-methacrylate-co-glycidyl methacrylate) having a melting index of 1 g / 10 min to 10 g / 10 min at 190° C.

The application discloses a degradable high-strength plastic bag and a preparation method thereof, and relates to the technical field of plastic bag preparation.The degradable high-strength plastic bag comprises the following raw materials in parts by mass: 40-60 parts of polylactic acid, 20-35 parts of polybutylene adipate terephthalate, 5-15 parts of modified nano calcium carbonate, 3-8 parts of modified wood fiber, 6-8 parts of chitosan grafted polymethyl methacrylate glycidyl ester nanoparticles, 0.5-2 parts of lubricant, 0.3-1 part of antioxidant, 2-5 parts of degradation accelerator and 0.5-1.5 parts of ultraviolet stabilizer.The prepared degradable high-strength plastic bag adopts polylactic acid and polybutylene adipate terephthalate as base materials, adopts modified nano calcium carbonate and modified fiber as fillers, and adopts chitosan grafted polymethyl methacrylate glycidyl ester nanoparticles as a compatibilizer, so that the balance between high strength and degradability is achieved, and the prepared degradable high-strength plastic bag can be used as a high-performance flexible packaging material.

The invention relates to the technical field of polymer solid-state electrolytes, and discloses a wide-temperature-range quasi-solid-state polymer electrolyte, a lithium metal battery and a preparation method and application of the lithium metal battery. The preparation method comprises the following steps: by taking bacterial cellulose containing Br active grafting sites on the surface as a substrate, grafting polyglycidyl methacrylate on the surface of the bacterial cellulose; grafting a crown ether group to a polyglycidyl methacrylate side chain to obtain a hybrid polymer brush filler; and compounding and assembling the hybrid polymer brush filler, polyvinylidene fluoride and lithium salt to obtain the wide-temperature-range quasi-solid polymer electrolyte. The hybrid polymer brush filler can reduce the thickness of an electrolyte membrane, remarkably increase the mechanical strength, inhibit the growth of lithium dendrites and improve the energy density of the battery; a crown ether group in a side chain can promote dissociation of lithium salt, rapid and uniform transmission of lithium ions is facilitated, and meanwhile, an inorganic SEI / CEI interface layer rich in LiF can be constructed in situ. The lithium ion transmission is accelerated without residual DMF (Dimethyl Formamide), and the long-term cycle performance and the consistency of the battery are excellent.

The invention discloses a continuous preparation method of high-dispersity polyglycidyl methacrylate (PGMA) microspheres based on a microfluidic technology, and aims to solve the core difficulties that the system is unstable, the flow velocity range is limited, the particle size and morphology uniformity of the microspheres are difficult to accurately control and the like in the existing preparation process. According to the method, a dispersed phase system with dichloromethane as a core is constructed, micro-fluidic operation parameters are optimized, a staged ultraviolet light polymerization curing process is adopted, the method has the advantages of energy conservation, high efficiency and batch synthesis, and the prepared PGMA microspheres have the advantages of uniform particle size, regular morphology, controllable pore structure and abundant epoxy functional groups on the surface, so that the performance of the PGMA microspheres is greatly improved. The method has wide application prospects in the fields of protein separation, sewage treatment, drug delivery, biosensor construction and the like.

The invention discloses an insulating material for an ultrahigh-voltage direct-current cable based on a gradient interface structure nano-composite and a preparation method of the insulating material. The insulating material is prepared from the following components in parts by weight: 80 to 100 parts of high-density polyethylene, 0 to 20 parts of low-density polyethylene, 1 to 3 parts of functionalized nano filler, 1.5 to 2.5 parts of dicumyl peroxide, 0.1 to 0.3 part of antioxidant and 0.1 to 0.3 part of lubricant. The core innovation lies in that the functionalized nano filler is nano magnesium oxide with a gradient interface structure constructed on the surface, the structure forms a poly (glycidyl methacrylate)-poly (1-octylene) block polymer chain through two-step graft polymerization, and continuous transition of modulus and polarity from the filler to a polyethylene matrix is realized. According to the insulating material, the maximum space charge density can be reduced to 1.2 * 10 < 3 > C / m < 3 >, the direct-current breakdown strength is larger than or equal to 550 kV / mm, the direct-current / alternating-current breakdown strength ratio reaches 0.74, the strength retention rate after 1000-hour aging is larger than or equal to 94%, and the insulating material has excellent mechanical performance and processing adaptability, is suitable for an ultrahigh-voltage direct-current cable with the voltage grade larger than or equal to 320 kV, can meet the requirement for long-distance high-capacity power transmission, and has a wide application prospect. And long-term safe and stable operation of the cable is ensured.

The application relates to the field of all-solid-state battery material preparation, in particular to a composite positive electrode binder and a preparation method thereof, a positive electrode sheet and a preparation method thereof, and an all-solid-state battery. 4 ~10 6 ; the first high molecular material comprises at least one of poly(ethylene-methacrylate-glycidyl methacrylate), poly(ethylene-glycidyl methacrylate) and polyglycidyl methacrylate; the second high molecular material comprises at least one of hydrogenated nitrile rubber (HNBR), nitrile rubber (NBR), ethyl cellulose (EC), styrene butadiene rubber (SBR) and polyvinylidene fluoride (PVDF); the binder is rich in polar groups and is easy to dissolve in a non-polar solvent, and cannot damage sulfide electrolyte. The prepared positive electrode sheet has higher ion / electron conductivity than that using a conventional binder, can widen a lithium ion transmission channel and improve battery cycle performance.

The invention provides a boron-lithium adsorption material as well as a preparation method and application thereof. The preparation method of the boron-lithium adsorption material comprises the following steps: providing layered double-metal hydroxide; grafting polyglycidyl methacrylate on the surface of the layered double-metal hydroxide to obtain an intermediate material; and carrying out epoxy ring-opening reaction on the amino-containing polyol and the polyglycidyl methacrylate on the surface of the intermediate material to prepare the boron-lithium adsorption material. According to the invention, the polyhydric alcohol is grafted on the surface of the layered double-metal hydroxide, so that the adsorption capacity of the layered double-metal hydroxide to borate radicals and lithium ions is improved, and a multi-stage adsorption mechanism among layers, laminates and surfaces is realized; the introduction of the polyhydric alcohol can enhance the selective adsorption of the polyhydric alcohol to borate radicals and improve the separation efficiency and selectivity; the boron-lithium adsorption material is excellent in structural stability, and solution loss and structural damage in the adsorption-desorption cycle process can be reduced.

An electrolytic paper for aluminum electrolytic capacitors includes an upper surface layer, an intermediate support layer, and a lower surface layer. Both the upper and lower surface layers comprise cotton pulp fibers and / or hemp pulp fibers, while the intermediate support layer comprises aramid fibers. An interpenetrating polymer network is formed between the upper and lower surface layers and the intermediate support layer using active functional groups of polyacrylic acid or polyglycidyl methacrylate and its derivatives. In this invention, the intermediate support layer exhibits extremely high insulation strength and thermal stability, resulting in a 30%-50% or higher breakdown voltage of the composite electrolytic paper compared to pure natural fiber electrolytic paper of the same basis weight, demonstrating superior voltage withstand performance. Furthermore, the interpenetrating polymer network formed between the upper and lower surface layers and the intermediate support layer using polyacrylic acid or polyglycidyl methacrylate and its derivatives ensures rapid and thorough wetting of the electrolyte and long-term electrolyte retention, thereby ensuring capacitor capacity and reducing ESR.

According to the preparation method of the conductive yarn provided by the invention, the conductive yarn is prepared by grafting flexible chain poly (glycidyl methacrylate) on the surface of the yarn by adopting an electron beam irradiation technology and then initiating monomer polymerization of a conductive polymer through in-situ chemical oxidation, so that the adhesive force and the adhesive amount of the conductive polymer and the conductivity of the yarn are favorably improved. The prepared conductive yarn has the advantages of being light, easy to weave, flexible, wearable and the like when being used for conductive fabric.

This invention belongs to the field of electronic packaging materials technology and discloses a high-collapse-resistance lead-free solder paste and its preparation method. This solder paste constructs a thermally responsive, self-reinforcing thixotropic structure by in-situ grafting a thermosensitive block copolymer, poly(N-isopropylacrylamide-b-polyglycidyl methacrylate), onto the surface of alloy solder powder. This results in high yield stress at room temperature, inhibiting cold collapse. During the preheating stage, the polymer chain conformation collapses, achieving structural compaction and broadening the collapse-resistance process window. The flux system does not contain traditional free thixotropic agents, and residues can be completely cleaned after reflow, eliminating solder bead defects. This solder paste is suitable for fine-pitch packaging, exhibiting both excellent printability and high reliability.

This invention relates to the field of silicon carbide composite material technology, specifically to a carbon fiber-aluminum silicon carbide composite material and its preparation process. By weight, it comprises the following components: 70-80 parts silicon carbide powder, 3-10 parts modified short-cut carbon fibers, 1-2 parts yttrium fluoride powder, 3-6 parts ZIF-8 (2-methylimidazolium zinc MOF), 3-5 parts alumina powder, 2-6 parts polyglycidyl methacrylate, 15-20 parts ethanol, 1-2 parts bisphenol A epoxy resin, 25-35 parts molten aluminum, and deionized water. In this invention, silicon carbide is used as the basic raw material for ceramics. By adding ZIF-8 material, the porosity of the silicon carbide ceramic is adjusted, increasing its compatibility with other composite materials and leveraging the overall excellent performance of the silicon carbide additives. The resulting carbon fiber-aluminum silicon carbide composite material exhibits advantages such as high wear resistance, high elastic modulus, and high strength.

The invention discloses an alkaline residue self-repairing cement-based material and a preparation method thereof. The cement-based material comprises cement clinker, chlor-alkali industrial carbide slag, aggregate, a functional polymer and a water reducing agent, a high-alkali environment of the carbide slag is utilized to trigger poly (glycidyl methacrylate-acrylamide-vinyl imidazole copolymer) in-situ crosslinking to form microcapsules, and sodium silicate and a calcium nitrate repairing agent are wrapped; when cracks are generated and water permeates into the cracks, the microcapsules release the repairing agent, and the repairing agent reacts rapidly to generate C-S-H gel to achieve self-healing. The 28d compressive strength of the prepared cement-based material exceeds 47MPa, the crack healing rate reaches 75% or above, the chloride ion migration coefficient is lower than 6.0 * 10 <-12 > m < 2 > / s, and the cement-based material shows excellent mechanical properties, self-repairing efficiency and durability. High-value resource utilization of the building slag is achieved, the service life of the cement-based material is not prolonged, and an effective way is provided for sustainability of the cement-based material.