10results about How to "Good oleophobic effect" patented technology

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof, in the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, the modified composite material is added into a polyvinylidene fluoride-hexafluoropropylene copolymer, fibers are formed through an electrostatic spinning method, the fibers are deposited on a polyester net base lining, and the multifunctional composite hydrophobic membrane is prepared. Nano-silica and hydroxyl multi-walled carbon nanotubes are modified, agglomeration is effectively avoided, the hydrophobic membrane has good mechanical strength and toughness, and microcosmic multi-dimensional roughness of the surface of the membrane can be achieved by introducing an inorganic-organic nano hybrid material. Fluorine atoms in a perfluorooctyl ethyl acrylate structure have relatively low surface energy, so that the surface energy of the film can be remarkably reduced, the surface of the film has low surface energy and a rough structure, and the film is high in hydrophobicity and good in chemical stability.

The present invention provides a curable perfluoropolyether adhesive composition containing the following components (A)-(C) and forming an adhesive having an adhesive force of less than 0.5 N / 25 mm by curing; (A) 100 parts by mass of a linear perfluoropolyether compound having at least two alkenyl groups in one molecule and having a perfluoropolyether structure containing a repeating unit represented by-CaF2aO-in the main chain, a being an integer of 1-6; (B) a curing effective amount of an organosilicon compound, one molecule of which has at least two hydrogen atoms bonded to a silicon atom; and (C) a hydrosilylation reaction catalyst in a catalytic amount. As a result, it is possible to provide a curable perfluoropolyether adhesive composition which is capable of providing a cured product having excellent heat resistance, weather resistance, hydrophobicity, oleophobicity, and the like, as well as excellent reagent resistance and solvent resistance, and in particular, the cured product is characterized by having micro-adhesiveness.

The utility model relates to a dirt-resistant water tank sheet metal part, which belongs to the technical field of sheet metal parts and comprises a mounting ring and a water containing tank, the mounting ring is fixedly mounted at an external use place, clamping holes are formed in four corners of the mounting ring, and clamping columns are fixedly arranged at four corners of the lower end of the upper part of the water containing tank. The water containing groove is provided with a clamping column and a clamping hole, the water forming groove is clamped on the mounting ring through the clamping column and the clamping hole, a cleaning groove is clamped in the water containing groove, the water containing groove and the cleaning groove are both made of sheet metal laminates, and a cleaning assembly is mounted in the cleaning groove. The cleaning assembly is arranged on the inner wall of the water containing tank, oil stains can leak out through a filter cartridge in the cleaning assembly, meanwhile, impurities on the inner wall of the water containing tank can be scraped off by pulling the cleaning assembly, the position of the cleaning tank is adjusted, the water containing depth of the water containing tank can be adjusted, a user can conveniently use the water containing tank, and the cleaning assembly can adjust the filtering degree, so that the user can conveniently adjust the filtering degree.

The invention discloses a polyurethane pressure-sensitive adhesive for a protective film and a preparation method of the polyurethane pressure-sensitive adhesive, and belongs to the technical field of pressure-sensitive adhesives. According to the invention, fluorinated acrylate is introduced into a polyol structure, so that not only is the viscosity of the polyurethane pressure-sensitive adhesive enhanced, but also excellent hydrophobicity and weather resistance are obtained. And the crosslinking density of the polyurethane pressure-sensitive adhesive is controlled through the combination and proportion of different crosslinking agents, so that the lasting viscosity of the pressure-sensitive adhesive is optimized.

This invention provides an oleophobic agent for improving wellbore stability, its preparation and application, and a drilling fluid. The oleophobic agent has a core-shell structure, comprising a core structure, a polymer film coating the outer surface of the core structure, and modified inorganic nanoparticles adsorbed onto the polymer film to form the shell structure; or it comprises a core structure and modified inorganic nanoparticles for forming the shell structure, wherein the modified inorganic nanoparticles are adsorbed onto the core structure via electrostatic attraction using a positively charged surfactant; wherein the core structure is selected from particles with a size ranging from submicron to micron. This oleophobic agent possesses a core-shell structure and a dual-level roughness of nano-submicron to micron, which can modify the wettability of rock surfaces to superoleophobic, thereby stabilizing the wellbore by inhibiting the absorption of oil phases into the rock.

The invention discloses a multifunctional hydrophobic and oleophobic concrete curing film agent as well as a preparation method and application thereof. The preparation method comprises preparation of a first-layer film agent and preparation of a second-layer film agent, the preparation of the first-layer film agent comprises the following steps: adding a polymer monomer, nano silicon dioxide, polycarboxylate, lauryl sodium sulfate, polyvinyl alcohol, a water reducing agent and an anti-ultraviolet agent into water, stirring to form an emulsion, adding an initiator under the protection of nitrogen, and carrying out a polymerization reaction to obtain the first-layer film agent; the preparation of the second-layer film agent comprises the following steps: adding a hydrophobic and oleophobic material, a silane coupling agent and a catalyst into a solvent, and uniformly stirring to obtain the second-layer film agent; the hydrophobic and oleophobic material comprises polydimethylsiloxane and polyvinylidene fluoride. The concrete curing film agent prepared by the invention has good effects of filling, permeating and repairing gaps, has multiple functions of water reduction, water resistance, oil resistance, hydrophobicity, crack prevention and the like, is durable in use stability, and effectively expands the use universality of the curing film agent.

The invention provides an all-solid-state battery and a manufacturing method thereof, and belongs to the technical field of solid-state batteries, the all-solid-state battery comprises a positive electrode, a negative electrode and a solid-state electrolyte, the positive electrode comprises a positive current collector and positive active slurry, the negative electrode comprises a negative current collector and negative active slurry, and the solid-state electrolyte is prepared from electrolyte slurry. The positive active slurry, the negative active slurry and the electrolyte slurry all comprise lithium titanate intercalated graphite, a binder, a conductive agent and a solvent, and the mass ratio of the lithium titanate intercalated graphite in the positive active slurry, the negative active slurry and the electrolyte slurry is 4.5-5.5%; the preparation method of the lithium titanate intercalated graphite comprises the following steps: adding graphite into an ammonium sulfate aqueous solution with the mass fraction of 45-50%, then sequentially adding potassium permanganate and lithium titanate, stirring for 60 minutes in a constant-temperature water bath, washing with water, then soaking for 2-3 hours until the pH value is 6.0-7.0, filtering, drying in a drying oven at the temperature of 60-70 DEG C, and calcining and puffing in a muffle furnace at the temperature of 550-600 DEG C to obtain the lithium titanate intercalated graphite. According to the invention, the capacity retention ratio of the prepared all-solid-state battery can be effectively improved, and the cycle service life of the all-solid-state battery is prolonged.

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof. In the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, which is added to a polyvinylidene fluoride-hexafluoropropylene copolymer, and formed into fibers by an electrostatic spinning method. The fibers are deposited on a polyester mesh substrate to obtain the multifunctional composite hydrophobic membrane. The nano silicon dioxide and the hydroxyl multi-walled carbon nanotubes are modified to effectively avoid agglomeration. The hydrophobic membrane has good mechanical strength and toughness. The introduction of inorganic-organic nano hybrid materials can realize microscopic multidimensional roughness of the membrane surface. The fluorine atoms in the perfluorooctyl ethyl acrylate structure have low surface energy and can significantly reduce the surface energy of the membrane. The membrane surface has low surface energy and a rough structure, strong hydrophobicity and good chemical stability.

The application discloses an anti-icing conductive coating for a contact net and a preparation method thereof, and belongs to the technical field of coating preparation. The coating comprises an A component and a B component. The A component comprises 12-25 parts of modified fluorosilicon resin, 0.6-1.2 parts of fluorinated modified nano-SiO2, 2-4 parts of TiN / graphene composite material, 2-4 parts of graphene / carbon fiber composite material, 2-4 parts of tetraphenyl ethylene grafted hydroxyl-terminated polydimethylsiloxane polymer, 1-2 parts of metal powder, 1-3 parts of super-conductive carbon black, 0.1-0.5 parts of adhesion promoter, 0.2-0.6 parts of wetting dispersant, 0.1-0.3 parts of defoaming agent and 60-80 parts of solvent. The B component comprises 1.5-4 parts of polyisocyanate curing agent. The coating provided by the application has excellent conductivity, light-heat anti-icing effect, excellent hydrophobic and oleophobic properties, and effectively reduces the aggregation of rainwater or ice and snow on the contact net. The coating has good wear resistance, strong adhesion, good toughness, anti-microcrack and wide application prospect.

The invention relates to the technical field of surface modification, in particular to modified glass glaze and a preparation method thereof, a heating assembly and an aerosol generating device. The modified glass glaze comprises a glass glaze base body, a transition layer and an oleophobic layer which are sequentially stacked in the thickness direction, wherein the transition layer comprises amorphous zirconium silicate; the oleophobic layer comprises a mesoporous inorganic material and a fluorinated organic polymer, and pores of the mesoporous inorganic material are filled with at least part of the fluorinated organic polymer. The thermal expansion coefficient of the transition layer is moderate, so that the whole structure forms a thermal stress gradient buffer system, and the risk of stripping of the oleophobic layer is reduced. The nano confinement effect of the mesoporous inorganic material can significantly improve the decomposition temperature of the fluorinated organic polymer, so that the fluorinated organic polymer can exert oleophobic performance for a long time. Therefore, the modified glass glaze is high in structural stability and excellent in thermal shock resistance, keeps excellent oleophobic performance at a long-term high temperature all the time, effectively inhibits tobacco tar adsorption and carbonization residues, and reduces the risk of cracking of a glass glaze matrix.