93results about How to "Good industrial production base" patented technology

The invention belongs to the technical field of membranes and particularly relates to a metal-organic framework (MOF) modified graphene/polymer hybrid proton exchange membrane and a preparation method thereof. According to the hybrid proton exchange membrane, an MOF is used for modifying graphene inorganic particles having a special structure, so that the proton conductivity of the proton exchange membrane can be effectively improved, and methanol permeability can be effectively inhibited; the MOF grows on graphene oxide in situ so as to effectively avoid the formation of multilayer graphene and increase the proton transfer rate; the framework structure of the MOF benefits the quick passing of protons; moreover, since he pore size of the MOF has selectivity, the sinuosity of methanol permeability channels can be increased, and therefore, the methanol permeability of the hybrid proton exchange membrane is reduced. The preparation method is simple in operation process and mild in preparation conditions, can be put into mass and large-scale production, and has a wide application prospect.

The invention belongs to the technical field of membranes, and particularly relates to a beta-cyclodextrin modified mesoporous silica ball-polymer hybrid proton exchange membrane and a preparation method thereof. The method comprises the following steps: firstly preparing a beta-cyclodextrin modified mesoporous silica ball with a spherical shell structure; and blending the beta-cyclodextrin modified mesoporous silica ball with a polymer, so as to prepare the proton exchange membrane. According to the proton exchange membrane prepared by the method, organic-inorganic composite particles (beta-cyclodextrin modified mesoporous silica balls) are introduced, the colorless transparent character of the proton exchange membrane is not changed; the proton conductivity of the beta-cyclodextrin modified mesoporous silica ball-polymer hybrid proton exchange membrane is greatly increased in comparison with a pure polymer proton exchange membrane; especially the proton conductivity in high-temperature and/or low-humidity environments is improved exponentially or even by one order of magnitude; and meanwhile, the method disclosed by the invention is mild in preparation condition, low in production cost and easy in large-batch and large-scale production, and has a good industrial production foundation and wide application prospect.

The invention relates to a high-heat-conductivity fluorine-containing resin based prepreg and a copper-clad plate prepared with the same. By introduction of a coupling agent modified inorganic nano supporting material into high-heat-conductivity inorganic filler, compatibility of the high-heat-conductivity inorganic filler to a fluorine-containing resin matrix is improved, and gathering of the high-heat-conductivity inorganic filler in a resin matrix is inhibited while heat conductivity of fluorine-containing resin is increased. The prepreg prepared by steps of impregnating glass fibers in dispersion liquid of the fluorine-containing resin mixture, drying and the like is high in heat conductivity, uniform in resin content, high in impregnation quality, high in resin adhesion, high in surface smoothness and appropriate in toughness and viscosity. The copper-clad plate prepared with the high-heat-conductivity fluorine-containing resin based prepreg is high in transverse heat conductivity, excellent in heat and mechanical property and dielectric property and high in copper foil peel strength and weather resistance, meets the requirement of high-power devices on quick transverse heat dissipation and accords with requirements on various comprehensive performances of substrate materials in the field of high-frequency communication.

The invention belongs to the field of communication materials, and particularly relates to a fluorine-containing resin-based copper-clad plate with a high dielectric constant and a preparation methodof the plate. According to the plate, surfaces of inorganic fillers are collectively modified by coupling agents and parts of fluorine-containing polymers, so that interaction force among the inorganic fillers and fluorine-containing resin substrates are higher, the loading amount of the inorganic fillers in the fluorine-containing resin substrates is high (>=50wt%), the compatibility among the inorganic fillers and the substrates is good, the bonding power among the inorganic fillers and the substrates is high, dispersion performances among the inorganic fillers and the substrates are better,so that a prepared fluorine-containing resin-based dielectric slice is uniform and good in dielectric property, the dielectric constant is larger than or equal to 5.0, and dielectric loss is only smaller than or equal to 0.002. The fluorine-containing resin-based copper-clad plate has a certain mechanical strength, excellent heat stability and high copper foil peel strength and can meet various performance requirements for diversified and complicated functions of the copper-clad plates and high-density and multilayer circuit arrangement and the like in the field of high-frequency and high-speed communication.

The invention belongs to the technical field of membranes, and in particular relates to a sulfonate functionalized metal-organic framework and graphene oxide compound modified polymer hybrid proton exchange membrane and a preparation method thereof. According to the invention, a compound(MOF-SO3H@GO) of the sulfonate functionalized metal-organic framework(MOF-SO3H) and graphene oxide(GO) is prepared first and then doped into a polymer to obtain the sulfonate functionalized metal-organic framework and graphene oxide compound particles hybridized polymer hybrid proton exchange membrane. The proton exchange membrane has excellent proton conductivity under a high dampness condition, and simultaneously improves the fuel obstructive capability of the hybrid proton exchange membrane. Therefore, the (MOF-SO3H@GO) modified polymer hybrid proton exchange membrane has more superior selectivity. The method has a simple operational process, mild preparation conditions, relatively low production cost, convenience for batch and large-scale production, good industrial production basis and wide application prospects.

The invention belongs to the technical field of membranes and particularly relates to a carbon nanotube/graphene oxide nanoribbon-polymer hybrid proton exchange membrane and a preparation method thereof. The proton exchange membrane is prepared by: preparing multi-wall carbon nanotubes into carbon nanotube/graphene oxide nanoribbon composite; blending the carbon nanotube/graphene oxide nanoribbon composite with a polymer solution. The proton exchange membrane prepared herein is introduced with one-dimensional and two-dimensional composite (carbon nanotube/graphene oxide nanoribbons) and thereby has good dispersity and has proton conductivity greatly improved as compared to that of pure-polymer proton exchange membranes and multiply improved particularly in high-temperature low-humidity environment; meanwhile, the invention is low in production cost, easy for batch large-scale production and has good industrial production basis and promising application prospect.

The invention relates to an antibacterial reverse osmosis composite membrane, which comprises a reverse osmosis membrane and a polymer cross-linking coating. An antibacterial agent in the polymer cross-linking coating is composite inorganic powder containing nano-silver. In the composite inorganic powder, mass ratio of silver to attapulgite is 10/100-100/100, and particle size of nano-silver is 3-100 nm. The invention also relates to a preparation method of the antibacterial reverse osmosis composite membrane. The antibacterial reverse osmosis composite membrane provided by the invention has advantages of good antibacterial property, long life, etc.

The invention discloses a preparation method of a modified metal-organic framework and a composite nano-filtration membrane. The preparation method of the modified metal-organic framework includes thesteps: modifying the surface of the metal-organic framework by the aid of plant polyphenol; forming a hollow structure in the metal-organic framework to obtain the modified metal-organic framework. The preparation method of the composite nano-filtration membrane containing the modified metal-organic framework includes the steps: loading the metal-organic framework into an aromatic polymer function surface layer of a porous supporting membrane by an interfacial polymerization method in situ to obtain the composite nano-filtration membrane. The modified metal-organic framework in the compositenano-filtration membrane is effectively loaded on the membrane and interacted with a surface layer polymer through a chemical bond, water flux, hydrophilcity and pollution resistance of the compositemembrane are improved, and structure stability and chlorine resistance of the composite nano-filtration membrane can be improved. The preparation method is simple and low in production cost and has good industrial production bases and wide application prospects, and the comprehensive performance of the membrane is remarkably improved.

The invention belongs to the technical field of membranes, and discloses a polydopamine-modified hollow metal organic framework-modified polymer hybrid proton exchange membrane and preparation thereof. The preparation comprises the following steps: (1) reacting metal salt with ligand to obtain a corresponding metal organic framework MOF; (2) etching the MOF in an aqueous solution of acid to obtain a hollow metal organic framework H-MOF; (3) putting the H-MOF into a buffer solution of dopamine hydrochloride, and stirring and reacting to obtain a polydopamine modified hollow metal organic framework H-MOF-D; and (4) adding the H-MOF-D into the sulfonated polymer solution to form a membrane casting solution and a membrane material, and soaking the membrane material in hydrogen peroxide, acid and deionized water to obtain the polydopamine-modified hollow metal organic framework-modified polymer hybrid proton exchange membrane. By improving the structure and composition of key functional components in the proton exchange membrane, the obtained proton exchange membrane has excellent proton conductivity under high and low humidity conditions.

The invention belongs to the technical field of lithium battery materials, in particular to a nanocomposite loading carbon-coated SnO2 nano particles on graphene sheets and a preparation method of the nanocomposite. Firstly a composite loading carbon-coated iron oxide on grapheme is obtained through a solvothermal reaction between ferrocene and graphene oxide, then ferric oxide nano particles in the composite are etched through acid to obtain carbon nanofoam with plenty of mesoporous structures, and then through precursor hydrolysis, mesopores are filled with SnO2 nano particles. The obtained material has very excellent lithium ion storage performance, outstanding cycling stability and excellent rate performance when being used as an anode material of a lithium battery. The method is simple to operate, relatively low in production cost and easy for batch and large-scale production, and has good industrial production bases and wide application prospects.

The invention belongs to the field of communication materials and particularly relates to a composition capable of crosslinking a hydrocarbon polymer and a prepared prepreg and a thermosetting copperclad plate, the dielectric property of the composition is excellent, the mechanical strength is high, the glass transition temperature and the heat resistance are high, the coefficient of thermal expansion is low, the peel strength of copper foil is high, the evenness of the various performances is high, the composition is suitable for manufacturing a multi-layer copper clad plate, and the variousperformance requirements on function diversification and complication of the copper clad plate material are met in the high-frequency high-speed communication field. Therefore, the composition has anexcellent basis for industrial production and a broad application prospect.

The invention belongs to the technical field of films, and particularly relates to an ionic liquid functionalized temperature-responsive composite film and a preparation method thereof. The method comprises the following steps: carrying out in-situ polymerization on an ionic liquid precursor monomer and a temperature-sensitive polymer monomer on a porous polymer base film surface, and meanwhile, carrying out quaternization reaction on the ionic liquid precursor unit and alkyl halide to form the ionic liquid temperature-sensitive copolymer. The obtained temperature-responsive composite film has temperature responsiveness, and especially can effectively regulate the response temperature of the composite film to the outside environment through the quantitative ion exchange between the hydrophilic counter ions and hydrophobic counter ions of the ionic liquid unit, thereby adapting to multiple application demands. The method has the advantages of simple operational process, mild preparation conditions and lower production cost, can easily implement mass large-scale production, and has favorable industrial production foundation and wide application prospects.

The invention belongs to the technical field of membranes, and particularly relates to a NafionTM-modified carbon quantum dot-polymer hybrid proton exchange membrane and a preparing method thereof. According to the method, polymer NafionTM and citric acid are firstly mixed and reacted under nitrogen protection to obtain NafionTM-modified carbon quantum dots, and then the prepared carbon quantum dots are mixed with a polymer solution to prepare the hybrid proton exchange membrane. Because of modification with the NafionTM, the carbon quantum dots have good dispersibility in the polymer matrix, and the proton conductivity of the prepared hybrid proton exchange membrane is increased by an order of magnitude. Through interaction between the carbon quantum dots and a membrane matrix, permeability channels of methanol in the membrane are more winding. The method has characteristics of simple and convenient operation, environment protection, easy batch and large-scale production, good industrial production bases and a wide application prospect.

The invention discloses a dicyclopentadiene/epoxy resin compound and a preparation method thereof. The preparation method comprises the steps that dicyclopentadiene monomers, epoxy resin, an epoxy resin curing agent and a curing accelerator are evenly mixed, then an olefin polymerization catalyst is added, the epoxy resin and dicyclopentadiene are polymerized and cross-linked respectively, and thus a high-molecular polymer with an interpenetrating network structure is obtained. The dicyclopentadiene/epoxy resin compound has low dielectric constant and dielectric loss factor and good heat resistance, and can be widely applied to the manufacturing industry of high-frequency copper-clad plates.

The invention discloses a hollow fiber composite nanofiltration membrane based on a natural polymer and a preparation method thereof. The preparation method comprises the steps of immersing the outer surface of a hollow fiber support membrane with amidogen on the surface into a water solution A containing the natural polymer, injecting a water solution B containing a coagulator into the hollow fiber support membrane, diffusing for 0.1 to 60min, taking out, and draining the solution on the surface of the hollow fiber support membrane; crosslinking the hollow fiber support membrane with the surface solution being drained under the action of a cross-linking agent, and obtaining the hollow fiber composite nanofiltration membrane based on the natural polymer. A selective separation layer of the hollow fiber composite nanofiltration membrane provided by the invention is prepared from a natural polymer compound, and only water is used as a solvent during a preparation process, so that the hollow fiber composite nanofiltration membrane has the characteristics of remarkable environment protection.

The invention relates to an antibacterial reverse-osmosis composite membrane. The antibacterial reverse-osmosis composite membrane comprises a reverse osmosis membrane and a high-molecular crosslinking coating layer, wherein an antibacterial agent in the high-molecular crosslinking coating layer is attapulgite/silicon dioxide-nanosilver composite inorganic powder, the mass ratio of nanosilver to attapulgite is (10 to 100)-(100 to 100), and the mass ratio of silicon dioxide to attapulgite is (3 to 100)-(30 to 100). The invention further relates to the preparation method and application of the antibacterial reverse-osmosis composite membrane. The antibacterial reverse-osmosis composite membrane is good in antibacterial performance and stable in structure.

The invention belongs to the field of polymer synthesis, and in particular relates to a liquid-liquid homogeneous method for synthesizing polyaryl ether by using a continuous flow micro-channel reactor. According to the method, an alkaline aqueous solution of a phenol derivative and an aqueous solution of an oxidant are respectively injected into DC-type micro-channel reactors by using metering pumps for preheating, and then are directly introduced into enhancing mixed-type continuous flow micro-channel reactors, a polyaryl ether solution is obtained by a liquid-liquid homogeneous reaction, and a final product polyaryl ether is obtained by filtering, washing and drying. The operation is simple, the polymerization process is safe, controllable and green, the yield is high, the molecular weight distribution is relatively narrow, the production efficiency is high, and the continuous industrial mass production can be realized.

The invention belongs to the field of polymer synthesis and in particular relates to a liquid-liquid heterogeneous method for synthesizing polyarylether by utilizing a continuous flow micro-channel reactor. The method disclosed by the invention comprises the following steps: taking an organic solution of phenol derivatives and hydrogen peroxide as raw materials, taking a metal salt-amine complex as a catalyst, introducing the various raw materials and the catalyst into a direct-flow type micro-channel reactor by a metering pump for preheating, directly introducing the materials into an enhanced mixing type continuous flow micro-channel reactor, and carrying out a liquid-liquid heterogeneous reaction to prepare a polyarylether solution; and finally, performing separating out-precipitating,filtering, washing and drying so as to obtain the final product polyarylether. The method disclosed by the invention is simple in operation, safe and controllable in polymerization process, high in yield, narrow in molecular weight distribution and high in production efficiency, and can realize large-scale continuous industrial production.

The invention relates to a cross-linkable fluororesin modified prepreg and a thermosetting copper-clad plate prepared from the same. According to the cross-linkable fluororesin modified prepreg, a chemical cross-linking structure exists between fluororesin and matrix resin, the cross-linkable fluororesin modified prepreg has same dielectric property, heat stability, chemical stability and copper foil peel strength with a traditional fluororesin modified copper-clad plate, presents relatively high mechanical strength and harness and relatively low thermal expansion coefficient, is suitable forproducing multi-layer high-frequency copper-clad plates and can meet various performance requirements on functional diversification and complication of copper-clad plate materials in the field of high-frequency and high-speed communication at present. Therefore, the cross-linkable fluororesin modified prepreg has good industrial production basis and wide application prospects.