12 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.

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.

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 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.

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.

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.