16results about How to "Hydrophilic" patented technology

The invention discloses a high-light-transmittance hydrophilic modified polypropylene composite material for vehicles and a preparation method of the high-light-transmittance hydrophilic modified polypropylene composite material. The high-light-transmittance hydrophilic modified polypropylene composite material comprises the following components in parts by weight: 70-95 parts of hydrophilic polypropylene, 5-25 parts of a toughening agent, 0.5-2 parts of an antistatic agent, 0.1-1 part of an epoxy resin aid, 0.1-1 part of an antioxidant and 0-2 parts of other aids. Homo-polypropylene is grafted with the ethylene-vinyl acetate copolymer through melting, so that polar groups are obtained, and the hydrophilic performance of the prepared composite material is improved. The high-rigidity polypropylene resin is adopted as a matrix and is compounded with the toughening body SEBS, so that the prepared composite material has low density, high rigidity and impact resistance.

This invention discloses a quaternary ammonium salt-modified lignin-based epoxy resin emulsion and its preparation and application methods. It is prepared by reacting quaternary ammonium salt, epoxidized lignin, polyamine compounds, reactive diluents, organic solvents, and water. The quaternary ammonium salt and polyamines are uniformly mixed and reacted in an organic solvent under stirring. Then, epoxidized lignin is added to continue the reaction, yielding the quaternary ammonium salt-modified lignin-based epoxy resin. Water is added to reduce the viscosity, resulting in the quaternary ammonium salt-modified lignin-based epoxy resin emulsion. After adding a curing agent and stirring evenly, it can be used to treat wood and bamboo materials by surface coating, immersion, vacuum impregnation, or pressure impregnation. The quaternary ammonium salt-modified lignin-based epoxy resin emulsion prepared by this invention exhibits good antibacterial, antifungal, and UV-resistant effects after curing, and its application to wood and bamboo materials can effectively improve their dimensional stability and durability.

A semiconductor structure, a method for forming the semiconductor structure, and an integrated circuit structure are disclosed. The method includes: providing a first substrate on which an electrode structure is formed, wherein the electrode structure is hydrophobic and the first substrate exposed by the electrode structure is hydrophilic; providing a polymer solution for forming a specific structure on the first substrate; providing a second substrate including a first surface and a plurality of spaced-apart walls protruding from the first surface, wherein the top surface of the walls is hydrophilic and the sidewalls and the exposed first surface of the walls are hydrophobic; dropping the polymer solution onto the top surface of the walls and placing the first substrate onto the second substrate to obtain an initial semiconductor structure; wherein the side of the first substrate with the electrode structure faces the second substrate, and the extension direction of the electrode structure is perpendicular to the extension direction of the walls; curing the polymer solution; and removing the second substrate from the initial semiconductor structure to obtain a target semiconductor structure. Embodiments of this disclosure improve device performance.

A stationary phase for chromatography, which is obtained by supporting a polymer having an amine-based side chain on a support, the polymer having one or more repeating units selected from the group consisting of a repeating unit represented by formula (1) and a repeating unit represented by formula (2) (in the formulae, R 11 and R 21 represent a hydrogen atom or a methyl group; R 12 , R 13 , R 22 , and R 23 represent a saturated aliphatic hydrocarbon group; Y 1 and Y 2 represent an oxygen atom, NH, or NCH3; and n1 and n2 represent an integer of 1 or more and 8 or less).

The application refers to Fe-Ni / polysulfone inorganic-organic hollow fiber hybrid membrane and a preparation method thereof, including a preparation process: step 1: dissolving polysulfone in an organic solvent and adding an additive, stirring to form a uniform solution; then adding 0.5% to 30% of Fe and Ni metal powder by mass ratio under stirring to obtain a spinning solution; step 2: mixing pure water and a polar solvent according to a certain ratio to form a uniform solution, obtaining an inner coagulation bath; step 3: transferring the spinning solution to a liquid supply tank after vacuum degassing, quantitatively and constantly conveying to a spinneret, at the same time, quantitatively and constantly conveying the inner coagulation bath into the spinneret, the spinning solution passing through an air gap and entering an outer coagulation bath, the hollow fiber membrane being coagulated and formed under the action of the inner / outer coagulation bath, being washed by pure water and dried to obtain the Fe-Ni / polysulfone hollow fiber membrane, which has a typical asymmetric structure, high mechanical strength and good biocompatibility, can significantly improve the hydrophilicity of the membrane and can also enhance the protein contamination resistance of the membrane.

This application belongs to the field of biomedical materials and tissue engineering technology, and discloses an antibacterial coating based on MDI-cured resin osteogenic scaffold and its preparation method. It innovatively uses diphenylmethane diisocyanate (MDI) as a curing crosslinking agent. With the help of its excellent reactivity and chemical properties, a variety of antibacterial agents (including tannic acid, ornidazole and minocycline hydrochloride) are firmly bound to the surface of a 3D printed blank resin scaffold, and a coating with hydrophilicity, high efficiency antibacterial properties and low cytotoxicity is successfully constructed, which has good antibacterial effect against both Gram-positive and Gram-negative bacteria.

This invention belongs to the field of imprinted sensor fabrication and application technology, and discloses a temperature-responsive yeast cell imprinted modified electrode, its fabrication method, and its application. This invention utilizes chronoamperometry and drop casting to modify gold electrodes, obtaining Au / AuNPs / Ti3C2T. x Au / AuNPs modified electrode. Using fluorescently labeled yeast cells as catalyst and template molecules, N-isopropylacrylamide as the temperature-responsive functional monomer and α-methacrylic acid as the auxiliary functional monomer, the electrode surface was modified using the MVL ATRP method. After removing the yeast cells, Au / AuNPs / Ti3C2T electrode was obtained. x / AuNPs / CIPs modified electrode. This modified electrode can be used as an electrochemical sensor for detecting yeast cells. This sensor has advantages such as fast detection speed and high sensitivity, with a linear response range of 1.0 × 10⁻⁶ for detecting yeast cells. 2 ~1.0×10 9 cells / mL.

This invention provides a foam modifier, its preparation method, and its application. The foam modifier comprises a surfactant, nanoparticles, and water; the surfactant includes anionic gemini surfactants and anionic nonionic surfactants; the nanoparticles are catecholamine polymer particles. The structural formula of the anionic gemini surfactant is [insert structural formula here], and the structural formula of the anionic nonionic surfactant is R6-O-(R8-O). n -R7; The foaming agent described has good foaming properties and good stability under high-salt and high-calcium-magnesium conditions, and can be applied in high-salt reservoirs.

The application relates to a preparation method of a high-flow reverse osmosis composite membrane based on a finger-shaped structure base membrane and an alginate nanotube separation layer, which comprises the following steps: S1, preparation of a casting solution: the casting solution comprises 15-18 wt% of solid polysulfone, 75-82 wt% of N, N-dimethylformamide and 0.5-9 wt% of a pore former, the above raw materials are uniformly mixed and placed, defoaming and filtration are carried out to obtain the casting solution; S2, uniformly spraying the casting solution on a base membrane and placing, placing the film in a water coagulation liquid to obtain a finger-shaped porous support polysulfone base membrane; S3, coating a binary amine aqueous solution on the finger-shaped porous support polysulfone base membrane obtained in the step S2 and drying; and S4, coating a multi-component acyl halide oil phase solution on the finger-shaped porous support polysulfone base membrane in the step S3 to prepare a composite membrane. The reverse osmosis composite membrane in the application can long-term improve and maintain water flux under the condition of ensuring a relatively optimal desalination rate, so as to improve membrane separation efficiency and reduce operation cost.

The invention belongs to the field of pulping and papermaking, and particularly relates to an efficient cotton pulp cooking method based on fiber wax coat pretreatment. According to the method, the cotton fiber raw material is effectively pretreated to remove a wax coat on the surface of the fiber, so that the hydrophilicity and the liquid medicine permeability of the fiber are improved. The method comprises the following steps: carrying out infiltration expansion treatment on a cotton fiber raw material to loosen a fiber structure; then, an alkaline solution and / or enzyme are / is adopted for removing a wax layer on the surface of the cotton fiber; and washing, neutralizing and then carrying out conventional alkaline cooking. Through the pretreatment process, the wax coat on the surface of the cotton fiber is effectively stripped, the surface energy of the fiber is obviously improved, the liquid medicine can quickly permeate into the fiber, and the cooking reaction is more uniform, so that the comprehensive effects of shortening the cooking time and improving the slurry yield are realized. The method is easy and convenient to operate, low in environmental load and suitable for the preparation process of high-quality cotton pulp and specialty paper raw materials.

This invention relates to an ionic covalent organic framework composite membrane, its preparation method, and its application in the separation of dyes and salts, belonging to the field of polymer materials and their preparation technology. The invention prepares an ionic covalent organic framework composite membrane using an improved casting-precipitation-evaporation method for separating dye and salt wastewater. The composite membrane can achieve the separation of salt and dye mixtures, exhibiting a high dye rejection rate (~97%) and a low salt retention rate (<5%), with a water permeability reaching 68 L / m². ‑2 h ‑1 bar ‑1 Furthermore, the obtained membrane exhibits good stability and antifouling properties, avoiding the problem of membrane performance degradation due to membrane layer separation. This invention solves the trade-off between selectivity and permeability in traditional polymer membranes, as well as the problem of poor mechanical properties and fragility of stand-alone membranes in practical applications. Therefore, it has certain application value in purifying dye wastewater and recovering salt from dye wastewater to supplement costs.

The application belongs to the field of road engineering and discloses a composite high-performance cement-based grouting material for local disease repair excited by carbamate, which is characterized in that the adding amount of each component is as follows in terms of weight fraction: cement 45-50 parts; water 20-25 parts; composite polyurethane 2.0-2.5 parts; nano-silica ash 0.9-1.0 parts; fine sand 2.3-2.5 parts; water reducing agent 0.2-0.25 parts; and defoaming agent 0.2-0.25 parts. The application also discloses a preparation method. The application has the following main beneficial effects: the hydration reaction and hydration speed are improved, and the formation of early strength is promoted; the strength and interfacial bonding strength after hardening, the toughness and stability of the grouting material are improved, the bubble content in the grouting material is reduced, the brittle fracture of the road surface is effectively reduced, the cement mortar breaking strength is increased, the mixing is carried out at normal temperature, the required energy consumption is low, no waste gas is discharged, the strength after hardening is high, and the adaptability is good.

The application provides a preparation method of a hydrophilic and hydrophobic coexisting nanofiber membrane, and the nanofiber membrane is directly prepared in situ on the skin by using electrostatic spinning method with PVB / PVP as the material. The two structures of PVB / PVP are independent and coexist, the hydrophilic PVP of the prepared nanofiber membrane is dissolved, the adhesion with the skin is increased, the hydrophobic PVB maintains the original structure, the existence of the membrane is maintained, meanwhile, the water loss in the membrane is blocked, and the effect of moisture retention is achieved. When used, the nanofiber membrane can be prepared after the skin is coated with a moisturizing skin care product, and the action time of the skin care product can be effectively prolonged and the skin can be kept moist after the film is formed.

The invention discloses a slow-release antibacterial scale-inhibiting self-cleaning material which comprises the following components in parts by weight: 65-80 parts of polyurethane resin, 10-15 parts of a slow-release antibacterial scale-inhibiting self-cleaning agent, 15-20 parts of a solvent, 0.1-2.0 parts of an adhesion promoter, 0.1-2.0 parts of a flatting agent and 0.1-0.2 part of a defoaming agent, the slow-release antibacterial scale-inhibiting self-cleaning agent is obtained by reacting an octa-amino POSS amine compound, an acrylamide compound and a cross-linking agent under the action of an activating agent. According to the invention, amino-containing POSS is prepared and modified to prepare a scale-inhibiting self-cleaning agent with a slow-release antibacterial effect, then a slow-release antibacterial scale-inhibiting self-cleaning material is prepared from the scale-inhibiting self-cleaning agent, and then the slow-release antibacterial scale-inhibiting self-cleaning material is applied to the surface of a polyolefin plastic packaging product to form a self-cleaning coating. The plastic packaging product can achieve the effects of slow release, antibiosis, scale inhibition and self-cleaning, and the problems that an existing plastic packaging product is prone to breeding bacteria, can hide dirt and is not easy to clean and the like are solved.

The application relates to the technical field of nano color paste, and discloses a water-oil universal type nano color paste and a preparation method thereof, which is composed of 30-40 parts of water-oil modified polyurethane, 3-5 parts of polyethylene glycol monomethyl ether, 2-6 parts of polyether modified maleic anhydride copolymer, 6-10 parts of polydimethylsiloxanol, 5-8 parts of glycerol, 0.3-0.6 parts of isobutyl alcohol amine, 35-50 parts of deionized water, 20-30 parts of pigment color powder and 10-20 parts of ethanol in terms of weight fraction. The water-oil modified polyurethane has certain hydrophobic performance (provided by an alkyl long chain) and certain hydrophilic performance (provided by sodium sulfonate), the balance of the two performances makes the water-oil modified polyurethane play a stabilizing role in a water-oil mixture, and the water-oil modified polyurethane has good storage stability. The water-oil modified polyurethane has easy preparation, wide application range, is suitable for most oil-based paints and water-based paints on the market, has extremely high transparency, permeability, and excellent effects on coloring and wetting of wood.

The invention provides a silicone hydrogel lens as well as a preparation method and application thereof, and belongs to the technical field of contact lenses. According to the invention, an organic silicon monomer is taken as a main body, a composite formula system of a high-oxygen-permeability silicon-based skeleton and a hydrophilic functional monomer is adopted, and a physical mixing process is adopted to realize dual-advantage fusion and accurate proportion of each core component, so that a product system with both oxygen permeability and comfort is obtained, and safe, comfortable and healthy vision correction choices are provided for consumers.