627 results about "Polymer coatings" patented technology

The invention discloses a large-size green packaging carton and a preparation process thereof, and relates to the field of packaging box preparation. The environment-friendly composite material comprises the following raw materials in parts by weight: 50-80 parts of plant fiber slurry, 10-25 parts of a modified starch-based adhesive, 5-15 parts of a nanoscale inorganic reinforcing filler, 1-5 parts of a degradable water repellent agent, 0.5-3 parts of a cross-linking agent and 2-8 parts of starch and plant fiber composite buffer microspheres. According to the preparation method, full-environment-friendly raw materials such as plant fiber slurry and a modified starch-based adhesive are selected and matched with starch and plant fiber composite buffer microspheres, and optimized processes such as segmented temperature control pressurization molding, adhesive gelatinization treatment, stirring speed reduction and microsphere structure protection are combined; and through coating of the degradable polymer coating and micron-sized hydrophobic texture imprinting, synergistic improvement of high compressive strength, excellent buffering performance, excellent hydrophobic and damp-proof effects and high degradation rate of the carton is achieved.

The invention relates to the technical field of immune carrier microspheres, in particular to an immune carrier microsphere constructed by individualized MHC-II combined polypeptide, a vaccine and application of the immune carrier microsphere and the vaccine. A core comprises microspheres constructed by a plurality of MHC-II binding polypeptides, sequences of the MHC-II binding polypeptides are obtained based on HLA gene typing results of an inoculator, and each HLA gene corresponds to at least one high-affinity MHC-II binding polypeptide; a shell is a glucan with sulfydryl or other polymer coating layer, and sulfydryl is used as a coupling group to be connected with an antigen to construct the vaccine. The method has the advantages that competition is avoided, inhibition is generated, a better immune effect is achieved, antibodies of high-titer carrier molecules are not generated, and cross reaction side effects are avoided. The carrier molecular diversity is reduced; side effects are avoided. And antibody immunity and cellular immunity functions are generated. The particle size of the microspheres is controllable, and the immunologic function can be achieved without adjuvants. The preparation process is simple to operate and good in repeatability.

The invention discloses a bacillus coagulans feed additive and a preparation method thereof, and relates to the technical field of feed additives, the bacillus coagulans feed additive comprises bacillus coagulans spores, the content of the spores is 1.0 * 10 < 8 >-1.0 * 10 < 11 > CFU / g; the protective agent system comprises the following components: maltodextrin or lactose, vegetable protein, polyhydric alcohol and an antioxidant; the invention discloses a microcapsule coating structure. A microcapsule is a two-layer composite coating of an inner layer alginate matrix and an outer layer polycation or polymer coating. According to the invention, bacillus coagulans spores which can still keep high survival rate under short-time high-temperature and low-pH conditions are obtained through screening and fermentation strategies of strains with high sporulation and heat and acid tolerance, the problem that common strains are easy to inactivate in granulation, extrusion and gastric acid environments is solved, the problem of product failure caused by insufficient tolerance of the strains is reduced, and the product quality is improved. And the original biological activity basis is improved, so that the protection effect of the subsequent formula and the coating can be played at a higher starting point, and the zoology effect of the final preparation is improved.

The invention discloses a humic acid coated zeolite-based nutrient-loaded slow-release fertilizer as well as a preparation method and application thereof. The slow-release fertilizer comprises a zeolite-based core and a humic acid polymer coating coated outside the zeolite-based core. The slow release fertilizer provided by the invention not only retains the original high-loading nutrient loading function of the nano composite zeolite material, but also endows the nano composite zeolite material with chemically stable ion exchange and adsorption functions, thereby thoroughly getting rid of the original'instant nutrient fertilizer salt core '; the slow-release fertilizer provided by the invention takes artificial humic acid as a coating material, so that the use of chemical organic materials and solvents is completely avoided. According to the invention, the conversion of the inorganic fly ash solid waste and the organic biomass solid waste from raw materials to the ecological slow-release fertilizer is realized. Meanwhile, the efficient conversion of zeolitization and humification in the chemical industrial process realizes the large-scale production of the zeolite-based material doped with the heterogeneous metal in the pore cage frame structure and the carbon-negative humic acid polymer material.

A razor blade with a sharpened cutting edge with an outer bonding surface. A hydrocarbon polymer organic coating material deposited on the outer bonding surface forming an outermost layer of the sharpened cutting edge. The hydrocarbon polymer organic coating is composed of one or more layers. Additionally, the method of coating the cutting edge is described.

The invention discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of polymer coating materials. The coating film sequentially comprises a nano particle skeleton layer, a dynamic borate bond layer and a super-amphiphobic functional layer from inside to outside, and the three-layer gradient design synergistically realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The framework layer takes SiO2-TiO2 composite nanoparticles as a substrate and provides support; the dynamic boric acid ester bond layer forms a dynamic network through polycondensation of an organic boron compound, endows the self-repairing capability and enhances interface bonding; the super-amphiphobic functional layer is formed by grafting a fluorine-containing organosilicon compound and has hydrophobic and oleophobic properties. A multi-layer structure is constructed step by step, the reaction condition is mild, the operation is simple, the cost is low, the method is suitable for large-scale industrial preparation, the coating film has excellent super-amphiphobic performance and interface adhesion performance, the super-amphiphobic performance of the coating film can still be kept stable in long-term use or a complex environment, and the problem that an existing super-amphiphobic material is prone to damage is effectively solved.

The invention relates to the technical field of polymer composite materials, in particular to an explosion-proof and impact-resistant polymer coating material for an aircraft shell. The coating is prepared from aliphatic polyurethane acrylate, cycloaliphatic epoxy resin, nano silicon dioxide, polyethylene glycol, polyurea microcapsules, dicyclopentadiene resin, a Grubb catalyst, graphene oxide, polysulfide rubber and the balance of auxiliary materials. According to the invention, aliphatic polyurethane acrylate is used as a flexible matrix, so that the risk of hydrolysis of aromatic isocyanate is avoided. The dicyclopentadiene resin is subjected to in-situ ring opening polymerization in the presence of a Grubbs catalyst and cooperates with the hydrophobic nano silicon dioxide to block water. The polyurea microcapsules are broken by impact to release silicone oil, and cracks are filled immediately to reduce friction. And a water molecule permeation path is prolonged by the mica powder sheet layer. And the epoxy-polyurethane network realizes micro-crack self-repairing through dynamic ester bond exchange, so that the anti-explosion and anti-impact functions of the coating and the structural stability of an aircraft shell in an extreme environment are guaranteed.

Provided is a superoxide dismutase-based nanoscale transdermal delivery system, which is a capsule composite structure consisting of a small molecule active ingredient, superoxide dismutase, and a polymer coating. The small molecule active ingredient is loaded in the superoxide dismutase, and the surface of the superoxide dismutase is coated with the polymer coating. The superoxide dismutase-based active ingredient transdermal delivery system has a diameter of 20-100 nm, and the polymer coating has a thickness of 7.5-52.5 nm. In the delivery system, the polymer coating protects the superoxide dismutase and the small molecule functional substance having an antioxidant effect, and the capsule composite structure is in the form of nanogel. The nanogel not only promotes the penetration depth of the delivery system, but also mitigates the stimulation of the delivery system to the skin. The delivery system features biofriendly starting materials, simple preparation method, and high yield, and thus can be produced in large scale industrially.

The embodiment of the invention relates to a slow-release polymer coating as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing a polymer monomer, a polymer monomer initiator, a solvent, a cross-linking agent and an electrolyte initiator in proportion to obtain coating precursor slurry; wherein the polymer monomer comprises a fluorinated acrylate compound; the polymer monomer initiator includes: a radical initiator; the solvent comprises an ether compound; the cross-linking agent comprises one or more of a polyethylene glycol derivative and an acrylate compound; the electrolyte initiator comprises lithium salt which can generate protonic acid with trace water and is resistant to high temperature; and coating the surface of an object to be covered with the coating precursor slurry, and carrying out heating polymerization treatment to obtain the slow-release polymer coating. The slow-release polymer coating can protect the lithium metal negative electrode and enhance the high-temperature safety performance of the lithium metal battery.

The invention discloses a method for preparing a non-polymer coating of a pure magnesium intravascular stent, and relates to the technical field of medical instruments, and the method comprises the following steps: pretreatment: immersing the pure magnesium intravascular stent into a diluted hydrochloric acid solution for ultrasonic cleaning, removing a surface oxidation film and impurities, then washing the pure magnesium intravascular stent with deionized water until the pure magnesium intravascular stent is neutral, and drying the pure magnesium intravascular stent for later use; micro-arc oxidation: taking the pretreated bracket as an anode, taking a stainless steel plate as a cathode, putting the bracket and the stainless steel plate in electrolyte, applying pulse voltage for treatment, and generating a ceramic oxide layer with the thickness of 5-20 microns on the surface of the bracket; and bioactive coating: immersing the stent subjected to micro-arc oxidation into the suspension, and depositing by adopting an electrophoretic deposition method to form a hydroxyapatite coating with the thickness of 1-5 microns. According to the non-polymer coating method for the pure magnesium intravascular stent, no polymer is used in the whole coating process, inflammatory reaction possibly caused by the polymer and degradation products of the polymer is avoided, and the biological safety of the stent is improved.

The invention relates to the technical field of lithium battery diaphragms, in particular to a core-shell structure large-particle-size PMMA binder and a preparation method thereof. According to the binder, a core-shell synergistic system is constructed through a step-by-step swelling polymerization process, and the binder has the characteristics of large particle size and uniform distribution. The core innovation lies in that room-temperature cold-pressing bonding is achieved in a breakthrough mode, and traditional materials needing hot pressing are thoroughly replaced; the unique particle size design effectively maintains the smoothness of diaphragm pores, and significantly reduces air permeability degradation; single-time coating forming is realized by blending with ceramic components, so that the production process is greatly simplified. The binder systematically solves the technical defects of wide particle size distribution, insufficient binding power and lack of cold pressing capability of the existing polymer coating, and provides an innovative solution for the high-performance lithium battery diaphragm.

The present application relates to the technical field of bacteriostatic impregnated paper preparation, and discloses a bacteriostatic impregnated paper and a preparation method thereof, wherein a melamine impregnated paper substrate is impregnated with an impregnating solution; a rate regulating coating is coated on the surface of the substrate, so that the release rate of the bacteriostatic component is regulated according to the change of environmental pH value; wherein the surface of the rate regulating coating is further coated with a nano-silver particle layer, and the components of the impregnating solution include the following raw materials in percentage by weight: tea tree oil 0.5-2%, cinnamaldehyde 1-3%, lemon essential oil 0.5-1%, ethanol 70-80% and water; the present application provides a multi-layer protection mechanism, which can not only effectively kill various bacteria and fungi, but also prolong the duration of the bacteriostatic effect; the presence of the nano-silver particle layer enhances the long-term bacteriostatic effect, and even after long-term use, the high-efficiency antibacterial performance can be maintained; the introduction of the pH-sensitive polymer coating enables the release rate of the bacteriostatic component to be automatically regulated according to the change of environmental pH value.

The embodiment of the invention provides a dotted array coating battery diaphragm which comprises a diaphragm base material and a polymer coating coated on the surface of at least one side of the diaphragm base material, and the polymer coating comprises a plurality of crater shapes which are provided with peripheral bulges and truncated cone-shaped bulges with concave centers, and the dotted coatings are arranged on the surface of the diaphragm base material to form a dotted array. According to the dot-shaped array coating battery diaphragm, the crater structure of the dot-shaped coating is creatively designed, accumulation of polymers at coating points is effectively reduced, the influence on the performance of the battery diaphragm after hot pressing is correspondingly small, the battery diaphragm can meet the requirement for the bonding strength with a battery pole piece, and meanwhile the battery diaphragm can be used for manufacturing the battery pole piece. The composite material has good ion permeability, wettability and air permeability, and better performance balance is achieved. The embodiment of the invention also provides a preparation method of the dotted array coating battery diaphragm and a secondary battery containing the dotted array coating battery diaphragm.

The invention belongs to the technical field of nano composite coatings, and particularly provides an anti-dust-sticking carbon nano polymer coating as well as a preparation method and application thereof. The invention relates to an anti-dust-sticking carbon nano polymer coating which comprises the following raw materials: epoxy resin, polytetrafluoroethylene, a reinforcing medium, a filler, an auxiliary agent and a curing agent, the reinforcing medium is prepared by mixing polyurethane, modified cyclodextrin and graphene, so that stacking among graphene is reduced, and the graphene is effectively dispersed. The ash sticking prevention carbon nano polymer coating prepared by the invention has the advantages of abrasion resistance and corrosion resistance.

The invention discloses a preparation method and antibacterial application of a naphthothiadiazolyl photosensitizer, and belongs to the technical field of biomedical antibacterial materials. The naphthothiadiazole-based photosensitizer provided by the invention overcomes the problem that the existing commercial photosensitizer gathers and quenches the active oxygen efficiency, and meanwhile, the antibacterial photosensitive polymer prepared based on the novel naphthothiadiazole-based photosensitizer has the unique advantages that the structure is stable, photosensitizer micromolecules are not easy to leak and the antibacterial effect is long-acting; the construction of the antibacterial polymer coating on the surface of the medical instrument in the future has important clinical application potential. The naphthothiadiazolyl photosensitizer provided by the invention has good photodynamic killing performance on drug-resistant bacteria MRSA (Methicillin Resistant Staphylococcus Aureus).

The invention provides a current collector modified by a self-repairing polymer coating, a preparation method and application of the current collector, and a negative-electrode-free sodium ion battery, and relates to the technical field of batteries. The preparation method of the current collector modified by the self-repairing polymer coating comprises the following steps: adding strong alkali and weak acid salt of NaOH or Na into an aqueous solution of polyacrylic acid, adjusting the pH to be neutral, then adding a plasticizer and a conductive agent to prepare slurry, then coating the surface of a base material with the slurry, drying and curing the base material, soaking the base material in a NaCl solution, and drying the base material to obtain the current collector modified by the self-repairing polymer coating. And after soaking is finished, the current collector modified by the self-repairing polymer coating is prepared. When the current collector is used for the negative-electrode-free sodium ion battery, coating loss caused by volume expansion in the dendritic crystal and sodium deposition / stripping process can be spontaneously repaired through Na < + > migration, the safety risk is reduced, and long-term stable operation of the negative-electrode-free sodium ion battery is guaranteed.

The invention relates to the field of energy storage batteries, in particular to a surface modification method of a carbon-based negative electrode material for a lithium ion battery and the carbon-based negative electrode material.The surface modification method comprises the following steps that S1, the carbon-based material, soluble saccharides, a lithium source and a solvent are mixed; s2, carrying out ball milling treatment on the slurry to obtain a precursor mixture; s3, calcining the precursor mixture to obtain a primary modified carbon material; s4, treating the primary modified carbon material in ozone to obtain an oxidation modified carbon material; and S5, dispersing the oxidation modified carbon material in a solution containing a conductive monomer and an oxidizing agent for chemical polymerization reaction, and depositing on the surface of the carbon material to form a polymer coating layer, thereby obtaining the surface modified carbon-based negative electrode material. By constructing a pre-lithiated carbon coated inner core and an ozone activation interface and preparing a modification layer of a conductive polymer, the core problems that a traditional carbon negative electrode is low in first efficiency, short in cycle life and poor in rate capability and is difficult to consider at the same time are solved.

The invention belongs to the technical field of pipeline coatings, and particularly provides a petroleum pipeline anti-corrosion carbon nano polymer coating as well as a preparation method and application of the petroleum pipeline anti-corrosion carbon nano polymer coating. The coating is prepared by mixing the following raw materials in parts by mass: 80-90 parts of base resin, 8-12 parts of microcapsules, 1-5 parts of carbon nanotubes, 0.5-2 parts of talcum powder, 0.5-1 part of a preservative, 0.1-0.5 part of a defoaming agent and 0.2-0.3 part of a flatting agent, the prepared microcapsule is used as a coating raw material component, coating cracks can be repaired, and the long-acting protection effect on metal of the inner layer of a pipeline is achieved.

A razor blade with a sharpened cutting edge with an outer bonding surface. A hydrocarbon polymer organic coating material deposited on the outer bonding surface forming an outermost layer of the sharpened cutting edge. The hydrocarbon polymer organic coating is composed of one or more layers. Additionally, the method of coating the cutting edge is described.

The present invention relates to a negative electrode active material and its preparation method and application. The negative electrode active material includes a silicon-carbon material and a polymer coating layer coated on the surface of the silicon-carbon material, and the material of the polymer coating layer includes a binder and a hydrophilic grafting monomer; wherein the side chain of the binder contains an end group capable of forming a hydrogen bond; any end group in the hydrophilic grafting monomer structure contains a reactive group; the minimum unit repetition number of the segment that does not contain the end group in the side chain structure of the binder is n1, and the minimum unit repetition number of the segment that does not contain the reactive group in the hydrophilic grafting monomer structure is n2, and n1 / n2 is 1.5-9.5. The negative electrode active material described in the present invention can not only be evenly dispersed in water, but also significantly reduces the gas production problem during the slurrying of the negative electrode active material and the coating of the electrode, thereby improving the quality of the electrode and the performance of the battery.

There is provided a filtration system comprising a first vessel, a second vessel and a separation layer. The first vessel is adapted to receive a liquid phase. The second vessel is in fluid communication with the first vessel and is adapted to receive a permeate of the liquid phase. The separation layer separates the first vessel and the second vessel. The separation layer is porous and the pores allow for the filtering of the liquid phase. The separation layer comprises a graphitic material, crosslinkers and a polymer coating.

The invention relates to the technical field of immunochromatography, in particular to time-resolved fluorescent microspheres, a preparation method and application of the time-resolved fluorescent microspheres in PSP / CRP / MxA quantitative detection immunochromatography test strip, and the preparation method of the time-resolved fluorescent microspheres comprises the following steps: 1) preparing surface aminated polystyrene microspheres; (2) carrying out glutaraldehyde crosslinking and 1, 10-phenanthroline-5-amino combination; 3) grafting a rare earth fluorescent dye on the surface; and 4) coating a polymer shell layer and modifying carboxyl. According to the invention, through a dual fixation strategy of surface grafting and polymer coating, the time-resolved fluorescent dye is confined to a functional region between the surface of the microsphere and a polymer shell layer, diffusion and leakage of dye molecules to the external environment are blocked, and the problem of dye shedding of traditional fluorescent microspheres is solved; the polymer shell layer can effectively isolate external ultraviolet light, oxygen and other corrosive factors, reduce photooxidative degradation and non-radiative transition loss of fluorescent molecules, and improve the light stability and fluorescent lifetime of the fluorescent molecules.

The invention relates to a fluoropolymer coating composition that can be used, for example, in coating electrodes and / or separators in electrochemical devices. The fluoropolymer coating composition preferably contains multiple fluoropolymer phases. The coated electrodes and / or separators have both excellent wet adhesion, excellent dry adhesion, and low leachables. Each of the fluoropolymer phases contains polymers having at least 10 weight percent, of a common fluoromonomer, making the polymer phases compatible with each other, and allowing for the phases to be distributed fairly homogeneously on a macroscopic level throughout the composition and dried coating formed from the composition.

A catheter that is at least partially defined from a hypotube includes a polymer coating of varied flexibility on an outer surface of the hypotube. The polymer coating may include a plurality of adjacent sections that are continuous with each other, but have different flexibilities from each other. The sections may have different hardnesses, or durometers that impart them with their different flexibilities. Methods for manufacturing such catheters are also disclosed.

The utility model relates to the technical field of building materials, in particular to a multifunctional composite heat preservation waterproof backing plate which comprises a heat preservation plate, a first non-woven fabric layer and a second non-woven fabric layer. A first non-woven fabric layer and a second non-woven fabric layer are bonded to the two sides of the heat preservation plate through adhesion agents respectively, a first waterproof coating and a second waterproof coating are arranged on the sides, away from the heat preservation plate, of the first non-woven fabric layer and the second non-woven fabric layer respectively, and the first non-woven fabric layer and the second non-woven fabric layer comprise upper non-woven fabric and lower non-woven fabric. A reinforcing layer is arranged between the upper non-woven fabric and the lower non-woven fabric. The first waterproof coating and the second waterproof coating are polymer coatings or silicone coatings. The interface agent is a polymer emulsion, a modified cement-based interface agent or a silane coupling agent. The back lining plate solves the problems that an existing back lining plate is insufficient in structural strength, prone to deformation or damage and incapable of being spliced to meet requirements.

The invention belongs to the technical field of nano composite materials, and particularly provides a corrosion-resistant flexible carbon nano polymer coating and a preparation method thereof, and the corrosion-resistant flexible carbon nano polymer coating comprises phenolic resin, bisphenol F epoxy resin, GO-NH2, self-repairing polyimide, a BYK-011 defoaming agent, talcum powder, polytetrafluoroethylene, a BYK333 flatting agent, silicon carbide, a B215 composite antioxidant, a UV531 ultraviolet light absorber and cardanol. The corrosion-resistant flexible carbon nano polymer coating prepared by the invention has excellent mechanical strength and wear resistance, good flexibility, efficient self-repairing capability and lasting corrosion resistance, the service life of the coating can be effectively prolonged, and the protection requirement in a severe environment is met.

The invention belongs to the field of paper for aluminum electrolytic capacitors, and particularly relates to a high-voltage-resistance low-loss electrolytic capacitor diaphragm and a preparation method thereof. According to the diaphragm, a plant fiber single-layer paper base with the beating degree of 90-98 degrees SR is adopted, hydrophilic polymer coatings distributed in a discontinuous point shape are formed on the two surfaces of the diaphragm through gravure coating, the coating coverage rate ranges from 20% to 70%, and the total gluing amount ranges from 0.2 g / m to 6.0 g / m. According to the structure, on the premise that the thickness is not obviously increased, the smoothness of the diaphragm is obviously reduced, and the electrolyte adsorbability is enhanced, so that the ESR is reduced to 20-22 m omega, and meanwhile, it is ensured that the breakdown voltage is larger than or equal to 550 V. The aluminum electrolytic capacitor is suitable for high-performance and miniaturized aluminum electrolytic capacitors.