32results about How to "Overcome the disadvantage of poor adhesion" patented technology

The invention relates to a preparation method for a base material of an anti-rust coating. The preparation method for an anti-rust soap-free acrylate emulsion is characterized in that a reactive emulsifier is selected, a polymeric monomer comprises (methyl) acrylic acid and an acrylic monomer thereof, a versatic acid vinyl monomer and a crosslinking monomer, a phosphate monomer is taken as a modified monomer, and the emulsion polymerization is carried out through semi-continue process under the action of an initiator, so that the soap-free anti-rust acrylate emulsion adopting water as dispersive medium is synthesized. The preparation method for the anti-rust soap-free acrylate emulsion can not only meet the requirement of environmental protection, but also enhance the rust resistance.

The invention discloses a method utilizing compound sacrificial layers to manufacture an infrared detector. The method comprises sequentially enabling a metal layer, a first polyimide sacrificial layer, a second amorphous silicon sacrificial layer and through holes formed by imaging of the sacrificial layers to be arranged on a complementary metal-oxide-semiconductor (CMOS) silicon substrate; in a laminating mode, manufacturing a structure layer and contact holes formed by imaging; manufacturing a sensitive layer, a metal electrode layer and a release protecting layer, and imaging the sensitive layer, the electrode layer and a microbridge structure. When the sacrificial layers are released, first the second sacrificial layer is released, and then the first sacrificial layer is released. Compared with the prior art, the infrared detector manufacturing method effectively enables two kinds of different sacrificial layers to be effectively utilized, the organic sacrificial layer can be utilized to carry out planarization on the surface of a CMOS, the adhesion between the surface of the CMOS and metal is improved, and the inorganic sacrificial layer is utilized to control volatility of polyimide so as to be more compatible with the CMOS process.

The invention discloses a method for curing and grafting amphoteric ion gel coat on external surface on material surface by ultraviolet. According to the method, a layer of visible-light curable organic / inorganic hybrid translation layer including chemically reactive unsaturated duplet bond and photo-initiator is coated on the surface of a substrate to be modified, then a layer of visible-light curable gel solution including amphoteric ion monomer, polyenoid cross linking agent and photo-initiator is coated on the surface of the translation layer, and irradiation is carried out under ultraviolet, so as to obtain the gel coat having amphoteric ions. The visible-light curable organic / inorganic hybrid translation layer is prepared by adding a silane precursor, solvent and water in a reactor, dropping acidic catalyst at 0 DGE C to 100 DEG C, aging for 1-10000h at 0 DGE C to 100 DEG C, and then adding photo-initiator. The method has the following characteristics of easy implementation and low cost, and is suitable for the surface modification field of different materials comprising metal, stone, ceramic, glass, polymer, and the like.

The invention relates to a method for applying oxidized PE wax to sealing protection of a circuit board. The method comprises the steps that the surface of the circuit board is coated with a layer ofcoupling agent, and air drying is conducted; the circuit board is dehumidified; a tackifier and a liquid toughening agent are added into the molten oxidized polyethylene wax to be uniformly mixed to prepare molten wax; the dehumidified circuit board is immersed in the molten wax for sealing, and after sealing is completed, the circuit board is placed on release paper and dried. By means of the sealing method, the defects that the oxidized PE wax easily cracks at the low temperature and has poor adhesion force are overcome; the tackifier and the toughening agent is added according to a ratio through repeated experiments, and finally, the oxidized PE wax can meet the requirement of the circuit board for effective waterproof and moisture-proof sealing in the working environment at minus 20-60DEG C. By means of the method, the good acid and alkali resistance, electrolytic-resistance chemical stability and hydrophobicity of the main ingredient PE wax are fully utilized, and a layer of waxfilm is formed on the surface of the circuit board and a component to protect the circuit board after melting.

The invention discloses a protective film for digital electronic equipment, comprising a plastic frame (1) integrally formed by injection molding and a rectangular substrate (2). ) of the annular connecting edge (3), the annular connecting edge (3) tightly wraps the edge of the substrate (2), and the edge of the substrate (2) is embedded in the interior of the annular connecting edge (3). Its processing technology is also disclosed. The beneficial effects of the present invention are: the present invention combines the advantages of glass materials and silica gel materials (including plastics such as silica gel, pet, abs, pp, pc, etc.), and can not only play a good protective role, but also reduce the thickness of the protective film, It has good transparency; the processing method of high-precision mold injection molding or die-casting plastic frame around the glass substrate ensures a good connection structure between the glass substrate and the plastic frame, and overcomes the disadvantage of poor adhesion between glass and silicone materials.

The matched coating for aluminum alloy base material special to corrosion protection and decoration comprises: the primer with epoxy-amine addition system as double constituents, the middle painting as polyester / polyurethane system used polyester resin with acid number of as 8-10 and alternative soft and hard chain segments, and the top coat used polyester resin with acid number not more than 6 and main chain as hard segment and chain length and branching degree both more than the middle. Wherein, the polyamine on primer reacts with the epoxy resin to produce the secondary amine with more slow activity and enhance the adhesive force. This invention solves the aluminum alloy adhesion problem without smoke resistant material, and comes up to the first-level security standard.

The invention relates to a preparation method of a transparent conducting material based on a 3D printing technology. The preparation method is characterized by comprising the following steps of 1) modeling; designing a model of a strip transparent conducting electrode by utilizing computer modeling software, and converting a software command of the model to a mechanical equipment directive of 3D printing so as to control the moving path, the movement speed and the liquid jet velocity of each 3D printing head as well as the moving path, the movement speed and the laser irradiation time of each laser head; and 2) printing the strip transparent conducting electrode. The transparent conducting electrode prepared by the invention has the advantages of good light transmittance and good electrical conductivity and overcomes the defect of poor adhesiveness of between a carbon nano-tube film layer and a substrate and between a graphene film layer and the substrate; and by adopting the method, the thickness and the width of the transparent conducting electrode are precisely controlled.

The invention discloses a method for preparing a black extinction film layer with high solar energy absorption rate and high emissivity on the surface of a titanium alloy, which relates to a method for preparing a ceramic film layer on the surface of a titanium alloy. The purpose of the invention is to solve the problems of low solar energy absorption rate, low self-emission rate and low binding force between the film layer and the base body existing in the coating on the surface of the titanium alloy. Methods: 1. Titanium alloy pretreatment; 2. Micro-arc oxidation to obtain a black extinction film with high solar energy absorption rate and high emissivity on the titanium alloy surface. The thickness of the black extinction film with high solar energy absorption rate and high emissivity on the surface of the titanium alloy prepared by the invention is 20 μm to 30 μm, the roughness of the film layer is 0.5 μm to 3 μm, the solar absorption rate is 0.95 to 0.98, and the emissivity is 0.93 to 0.97 . The invention discloses a method for preparing a black extinction film layer with high solar energy absorption rate and high emissivity on the surface of a titanium alloy.

The invention relates to an ultrathin water-based epoxy resin expandable fireproof paint and a preparation method thereof, belonging to the technical field of plating metal materials. The fireproof paint comprises water, aqueous epoxy emulsion, a solidification agent, ammonium polyphosphate, a charring foaming agent, a charring accelerant, nano fillers, inorganic fireproof fillers, a dispersing agent, a defoaming agent and a thickening agent. A ball milling machine is adopted for preparing a double-component paint; component A is prepared by two steps of: (1) dispersing the ammonium polyphosphate, the charring foaming agent, the charring accelerant, the nano fillers and the inorganic fireproof fillers in the water by the dispersing agent, with the milling time of 1 to 2 hours; and (2) adding the solidification agent and the defoaming agent for continuously milling for 0.5 to 1 hour; and component B is prepared by one step of: milling the aqueous epoxy emulsion, the thickening agent and the defoaming agent for 0.5 to 1 hour. When the coating thickness of the fireproof paint is smaller than or equal to 1mm, the fireproof time is larger than 90 minutes, the maximum smoke density is smaller than 50, and the adhesion force is larger than or equal to 12MPa. The invention has the advantages of simple preparation process, environmental protection and excellent performance, and can be used for the fire safety protection of the inner parts of large steel structures of buildings, ships, oil storage tanks and the like.

The invention discloses a transparent and colorless conductive film for a flexible display. The preparation method comprises the following steps: first, using a diamine monomer comprising 2,2-bis[4-(4-aminophenoxy phenyl)]hexafluoropropane as a main component and a dianhydride monomer comprising 4, 4'-(p-phenylenedioxy)bis(phthalic anhydride) as a main component to react to obtain a polyamide acidsolution, then adding nanoscale barium ruthenate powder subjected to sintering at a high temperature of over 1700 DEG C, thereby obtaining a mixed solution, and performing imidization on a film obtained after removing solvents from the mixed solution, thereby obtaining the colorless transparent conductive film for a flexible display. The conductive film obtained by the invention is obtained by using a transparent and colorless flexible polyimide material as a matrix and adding high-conductivity BaRuO3 powder, and overcomes the defects of relatively poor flexibility of a traditional transparent conductive layer of ITO, nano silver wire, graphene and the like used in a flexible display, poor adhesion to the flexible substrate, and the like. At that same time, the problem that the transparency of the composite film obtained by adding conductive filler to a common polyimide matrix is poor and a conductive effect is not ideal is solved.