33results about How to "Uniform and stable combination" patented technology

The invention discloses a sintered candy glaze with a concave and convex texture and a preparation method of a porcelain tile. A glaze of the sintered candy glaze with the concave and convex texture comprises printing ink and a transparent frit, wherein the mass ratio of the printing ink to the transparent frit is (2.5-3.5):(0.5-1.5); and the transparent frit is regular spherical particles. According to the sintered candy glaze with the concave and convex texture, the concave and convex texture of the burnt brick surface effect is finer; the decoration effect is more abundant; and the preparation method of the porcelain tile has the advantages of being simple in preparation technology, simple in operation, free of polishing treatment, high in stereoscopic impression of the brick surface effect and low in defective rate.

The invention provides a preparation method of drug balloons as well as the drug balloons prepared by the preparation method and application thereof. The preparation method is characterized by comprising the following steps: curing chitosan to surfaces of balloons to obtain balloons with surfaces modified by the chitosan; spraying a drug solution on the obtained balloons with the surfaces modified by the chitosan to obtain the balloons with surfaces provided with drug coatings; carrying out surface solvation treatment on the balloons and carrying out segmented folding and packing to obtain the drug balloons. According to the drug balloons prepared by the preparation method provided by the invention, the drug coatings can be uniformly and firmly combined on the surfaces of the balloons and not easily fall off; drugs are prevented from being washed off in an in-vivo conveying process; the loss of drugs is reduced and the utilization rate of the drugs is improved; the preparation method provided by the invention is accurate, stable and efficient, is suitable for industrial large-scale production and has a wide application prospect.

The invention relates to the field of a plastic cement novel material, in particular to a PPS composite material for nanometer injection molding and a preparation process thereof. The PPS composite material for nanometer injection molding is prepared from the following ingredients in parts by weight: 50 to 80 parts of resin, 5 to 35 parts of continuous long carbon fiber, 2 to 10 parts of silicon dioxide, 3 to 8 parts of tougheners, 0.5 to 1 part of antioxidizers, 0.5 to 2 parts of coupling agents and 0.5 to 1 parts of lubricating agents. The toughener is maleic anhydride grafted styrene-ethylene-butadiene-styrene; the laser additive is nanometer copper powder modified by acrylic ester. The PPS composite material for nanometer injection molding has the advantages of good mechanical performance, high bonding force with metal materials and good heat resistance, so that the NMT (nano molding technology) process requirements can be better met.

The invention relates to a bidirectional protecting oil pump plunger and a hot spray processing technique for an alloy coating of the same. The protecting oil pump plunger comprises a long cylinder, wherein two ends of the cylinder are provided with external threads and are connected with a valve cover; and the surface of the plunger is sprayed with a corrosion-resistant and wear-resistant AOC alloy coating; the thickness of the alloy coating is more than 0.25mm; the alloy coating comprises the following components: 14 to 17 percent of chromium, less than 8 percent of iron, 3.5 to 5 percent of silicon, 2.8 to 3.8 percent of boron, 0.5 to 1 percent of carbon and 65.2 to 78.9 percent of nickel; and after the working procedures of surface roughening activating treatment, spraying, remelting and polishing, a wear-resistant and corrosion-resistant coating is formed on the surface of the plunger. The process has simple and convenient operation; the coating is combined closely after spraying; the performance of a basal body of the plunger is not influenced during spraying; and the thickness of the coating is more than 0.25 mm, and the coating can resist outside wearing and corrosion, and reduce the wearing to the inner surface of a pump cylinder of an oil well pump.

The invention discloses an asynchronous cold rolling forming process of an aluminum alloy stainless steel composite plate. The process comprises the following process steps: 1, rolling and compoundinga stainless steel plate and an aluminum alloy plate in an asynchronous rolling mode, and 2, after asynchronous rolling, diffusing and annealing the composite plate, specifically, in the step 1, online heating is carried out on the opposite surface of the composite plate surface of the stainless steel plate, online cooling is carried out on the opposite surface of the composite plate surface of the aluminum alloy plate online, and the heating temperature is 350 DEG C-850 DEG C; the temperature of the composite plate surface of the stainless steel plate from which the composite plate is rolledis lower than 650 DEG C, and the temperature of the composite plate surface of the aluminum alloy plate from which the composite plate is rolled is lower than 300 DEG C; the rolling reduction rate is20%-90%; the different speed ratio of a roller for asynchronous cold rolling is 1.05-1.50; the thickness ratio of the aluminum alloy plate to the stainless steel plate is 1.5-4.0; and in the step 2, the annealing temperature is 250 DEG C-500 DEG C and the annealing time is 15-120 min. The single-side online heating process for rolling the composite plate is creatively provided so as to improve theinterface bonding strength of the composite plate and realize rolling compounding in an interface semi-melting state.

The invention relates to a hot spray processing technique for an alloy coating of an AOF bidirectional protecting oil pump plunger. The processing technique comprises the following steps: carrying out surface oil removal treatment on an oil pump plunger blank; burnishing and roughening the blank by an abrasive band; preheating the treated blank to 300 DEG C for surface activation; then pre-spraying alloy powder with the thickness about 0.2 mm to protect the surface of the plunger from contacting air indirectly; continuously spraying till the ultimate thickness of the coating reaches 0.4 mm; heating the plunger blank by an intermediate induction heating device after spraying is completed for remelting of the alloy coating, wherein the remelting temperature is about 1,000 DEG C; and finally burnishing and polishing to prepare the AOF bidirectional protecting oil pump plunger by using No.100 and No.200 abrasive bands. The processing technique has simple and convenient operation, the coating is combined closely after spraying; the performance of a basal body of the plunger is not influenced during coating; and the thickness of the coating is more than 0.25 mm, and the coating can resist outside wearing and corrosion, and reduce the wearing to the inner surface of a pump cylinder of an oil well pump.

An edible oil containing proportionally fatty acid composed of saturated fatty acid, mono-unsaturated-fatty acid and poly-unsaturated-fatty acid is prepared through enzyme-catalytic synthesis reaction between the plant oil rich in N6-series poly-unsaturated-fatty acid and the plant oil rich in N3-series one.

The invention relates to a composite functional shoe pad. The shoe pad is divided into an area A and an area B, wherein the area A is divided into a sole area A1 and a heel area A2, the area A is made of a closed cell polyurethane foam material, the other part is the area B, and the area B is made of a fine cell polyurethane foam material. The composite functional shoe pad is prepared by using a mold I and a mold II through a two-time injection technique. The composite functional shoe pad provided by the invention selects different foam materials for providing functional protection according to different physiological parts of a foot, can satisfy walking and moving demands of people, and can better play roles of perspiration, weight bearing and stress reduction. The process is simple, the fine cell polyurethane foam material and the closed cell polyurethane foam material are bonded more uniformly and firmly than materials directly glued, and the composite functional shoe pad is suitable for large-scale production and application.

The invention discloses a ceiling paint-brushing device for building construction and relates to the technical field of building construction. The ceiling paint-brushing device comprises a brushing unit and a supplying unit. The brushing unit comprises a shape-fixing rolling device and a brushing device; the shape-fixing rolling device comprises a cylindrical elastic bag; a circular-truncated-cone-shaped wire reel is mounted in a limiting sleeve shell in a rotating fit mode; shape-fixing wires are evenly and fixedly connected to the inner wall of the elastic bag; the brushing device comprisesa collecting box and an annular brushing belt; and the supplying unit comprises a moving plate, and a paint barrel, a supplying pump and an inflation pump are mounted on the moving plate. The ceilingpaint-brushing device has the beneficial effects that the brushing unit can deform to adapt to even brushing of the plane, the near-arc-shaped edge, the arc-shaped end face and the like; and through inflation expansion of the elastic bag, each part, making contact with a ceiling, of the brushing belt can better bear force, and the paint is bonded with the ceiling more evenly and firmly.

The invention relates to a directional protecting oil pump plunger and a hot spray processing technique for the surface of the same. The protecting oil pump plunger comprises a long cylinder; two ends of the cylinder are provided with external threads and are connected with a valve cover; the surface of the plunger is sprayed with a layer of corrosion-resistant and wear-resistant AOC alloy coating; the thickness of the alloy coating is more than 0.25 mm; and after the working procedures of surface roughening activating treatment, spraying, remelting and polishing, a wear-resistant and corrosion-resistant coating is formed on the surface of the plunger. The processing technique has simple and convenient operation; the coating is combined closely after spraying; the performance of a basal body of the plunger is not influenced during spraying; and the thickness of the coating is more than 0.25 mm, and the coating can resist outside wearing and corrosion and reduce the wearing to the inner surface of a pump cylinder of an oil well pump.

The invention discloses a high-heat-dissipation metal aluminum-based copper-clad plate. The copper-clad plate is formed by pressing a copper foil plate, a heat dissipation insulating layer and an aluminum substrate which are sequentially arranged from top to bottom. The heat dissipation insulating layer comprises the following components in parts by weight: 100 parts of epoxy resin, 20-40 parts of heat conduction filler, 2-8 parts of curing accelerator and 20-50 parts of curing agent. The heat conduction filler is prepared by coating boron nitride with modified hollow microspheres, and the modified hollow microspheres are porous hollow microspheres prepared by compounding tantalum disilicide powder and basic cobalt carbonate. The epoxy resin is used as a matrix, and the added heat-conducting filler not only enhances the heat dissipation capability of the epoxy resin, but also enhances the mechanical property of the epoxy resin, so that the heat dissipation insulating layer has the characteristics of high heat conductivity, high stability and the like, and heat accumulated by a heating element can be quickly, timely and effectively transferred; and normal operation of equipment is ensured.

The invention discloses a graphene-coated glass wool felt resin composite material plate and a preparation method thereof. The composite material plate is composed of graphene-coated glass wool felt with the volume fraction of 10-25% and a resin matrix with the volume fraction of 75-90%. The composite material plate is characterized in that the graphene-coated glass wool felt is composed of glassfiber cotton felt and graphene, and the glass fiber cotton felt is composed of glass fiber monofilaments and a binder; and the graphene uniformly coats the surface of the binder to form a continuous coating structure. The preparation method comprises the following steps of: (1) modifying the surfaces of glass fibers; (2) modifying the glass fibers with graphene oxide; (3) reducing the graphene oxide; and (4) carrying out vacuum impregnation, heating and curing on a resin prepreg. The graphene-coated glass wool felt is adopted as a reinforcing phase, the high-temperature resistance and the mechanical property of the composite material plate are improved, and the electromagnetic shielding performance of a composite material substrate is improved by filling resin.

The invention discloses a ceiling paint-brushing device for building construction and relates to the technical field of building construction. The ceiling paint-brushing device comprises a brushing unit and a supplying unit. The brushing unit comprises a shape-fixing rolling device and a brushing device; the shape-fixing rolling device comprises a cylindrical elastic bag; a circular-truncated-cone-shaped wire reel is mounted in a limiting sleeve shell in a rotating fit mode; shape-fixing wires are evenly and fixedly connected to the inner wall of the elastic bag; the brushing device comprisesa collecting box and an annular brushing belt; and the supplying unit comprises a moving plate, and a paint barrel, a supplying pump and an inflation pump are mounted on the moving plate. The ceilingpaint-brushing device has the beneficial effects that the brushing unit can deform to adapt to even brushing of the plane, the near-arc-shaped edge, the arc-shaped end face and the like; and through inflation expansion of the elastic bag, each part, making contact with a ceiling, of the brushing belt can better bear force, and the paint is bonded with the ceiling more evenly and firmly.

The invention provides a method for rapidly typing mammal sperms by using biologically modified beta-cyclodextrin nano magnetic particles, by which a large amount of sperms can be separated even in a short time, and the motility of the separated sperms can be prevented from being reduced. On one hand, the nano magnetic particle can be used as a carrier of biomacromolecules, and because the nano magnetic particle is coated with a TLR7/TLR8 ligand, the nano magnetic particle not only has the characteristic of specifically recognizing X/Y sperms, but also has the characteristic of magnetism, so that the nano magnetic particle has more advantages in the aspects of separating, purifying and concentrating target sperms from a complex sample and the like; the method has the advantages of rapidness (5-20 minutes), high specificity, simplicity and convenience in operation, wide application range (almost applicable to treatment of all samples) and the like. The defects of low separation efficiency, relatively strong interaction among particles and relatively poor dispersity of conventional micron-sized immunomagnetic particles can be overcome.

The invention discloses a preparation method of a high-polymer material for water blocking. The high-polymer material comprises the following raw materials in parts by weight: 260 parts of acrylic acid, 281 parts of 50% sodium hydroxide solution, 26 parts of acrylamide, 392 parts of deionized water, 7.5 parts of ethoxylated pentaerythritol tetraacrylate, 1.5 parts of propylene diamine and 0.8 part of initiator. The preparation method comprises the following steps: adding the acrylic acid, the deionized water and the 50% sodium hydroxide solution into a reactor, and neutralizing; then adding the acrylamide, the ethoxylated pentaerythritol tetraacrylate and the propylene diamine; introducing nitrogen gas to remove oxygen for 10 minutes, and stirring; adding the initiator, and initiating polymerization reaction at 5-8 DEG C to obtain a colloid; and granulating, drying, crushing, and screening. According to the invention, the preparation method is simple in production process and stable in technical performance; the high-polymer material has a high water absorption rate and achieves a high swelling rate when encountering water; and the high-polymer material has a good water blocking effect and favorable heat stability and degradation resistance, is not influenced by a high-temperature environment, and can be uniformly and firmly combined with a substrate.