46results about How to "Uniform surface structure" patented technology

This invention is directed to advanced hemorrhage control wound dressings, and methods of using a producing same. The subject wound dressing is constructed from a non-mammalian material for control of severe bleeding. The wound dressing is formed of a biomaterial comprising chitosan for controlling severe bleeding. The kind of severe, life-threatening bleeding contemplated by this invention is typically of the type not capable of being stanched when a conventional gauze wound dressing is applied with conventional pressure to the subject wound. The wound dressing being capable of substantially stanching the flow of the severe life-threatening bleeding from the wound by adhering to the wound site, to seal the wound, to accelerate blood clot formation at the wound site, to reinforce clot information at the wound site and prevent bleed out from the wound site, and to substantially prohibit the flow of blood out of the wound site.

The invention relates to a preparation method of a transparent super-hydrophobic zinc oxide coating on a glass substrate. The preparation method comprises the following steps of a, substrate pretreatment; b, zinc oxide solution preparation; c, zinc oxide coating preparation; and d, zinc oxide coating surface modification. Compared with the prior art, the preparation method has the beneficial effects of simple equipment process, low cost and mild reaction condition and is beneficial to large-scale industrial production. The transparent super-hydrophobic zinc oxide coating prepared by using the method has excellent hydrophobicity and transparency; the contact angle is larger than 160 degrees, the rolling angle is smaller than 8 degrees, and water drops can freely roll on the coating, so that the transparent super-hydrophobic zinc oxide coating has relatively good self-cleaning performance; and the light transmittance is approach to 90% which is close to that of blank glass, so that the transparent super-hydrophobic zinc oxide coating has favorable visible light transmittance. A surface modifier used in the preparation method is an alkyl silane coupling agent instead of a fluorinated compound, so that the cost is low, the environment pollution is relatively low, and the modified coating is relatively stable.

The invention discloses a wet process chemical preparation method for black silicon with a pointed-cone-shaped surface. The preparation method comprises the steps that two kinds of etching liquid are prepared, wherein the first kind of etching liquid is mixing water solution of nitric acid copper, hydrogen peroxide and hydrofluoric acid, and the second kind of etching liquid is mixing water solution of nitric acid copper, ammonium hydrogen fluoride and hydrogen peroxide; a monocrystalline silicon piece is placed into the first kind of etching liquid for initial etching; the monocrystalline silicon piece is placed into the second kind of etching liquid for surface structural ornament; finally, surface metal granule residue is washed, and the black silicon materials with the pointed-cone-shaped surface are obtained. According to the preparation method, two steps of copper ion chemical auxiliary etching is utilized, and a pointed-cone-shaped nanometer structure is prepared on the surface of monocrystalline silicon. The structure has good light trapping performance, and can remarkably improve light absorbing efficiency when applied to a silicon substrate solar cell.

The invention provides a micro/nano interface separation net as well as a preparation method and an application thereof. The micro/nano interface separation net comprises a metal fiber braided net and a conductive polymer layer covering the surface of the metal fiber braided net, wherein the conductive polymer layer is formed by a doped conductive polymer with redox reversibility. The micro/nano interface separation net has a simple manufacturing process, can transform between underwater super oleophobic property and underwater super lipophilic property and is suitable for different oil-water systems, thus realizing intelligent and controllable oil-water separation.

The present invention discloses a method for preparing powder walnut oil with high embedding rate. Said method includes the following steps: (1), after the monoglyceride, lecithine and Tween-60 as emulsifying agent are dissolved in water, successively adding octylene succinic acid esterified starch HI-CAP100 and maltodextrin as wall material to obtain wall material aqueous solution for stand-by; (2), adding walnut oil into the above-mentioned wall material aqueous solution, shearing and homogenizing to make the walnut oil be uniformly dispersed in the wall material aqueous solution; under the action of emulsifying agent forming O/W (oil-in-water) type emulsion with good emulsification stability; and (3), utilizing drying process to remove water content from emulsion, making wall material be formed into film, then the walnut oil can be uniformly embedded by all material film so as to obtain the invented powder walnut oil with high embedding rate.

The invention discloses IF isotropic steel with stamping forming improved and a manufacturing method of the IF isotropic steel. The IF isotropic steel is composed of, by weight percent, 0.0012% to 0.0026% of C, not larger than 0.026% of Si, 0.28% to 0.52% of Mn, not larger than 0.015% of P, not larger than 0.010% of S, 0.042% to 0.082% of Al, 0.046% to 0.066% of Ti, not larger than 0.0030% of N and the balance Fe and inevitable impurities. According to the IF isotropic steel, in the subsequent hot rolling, cold rolling, continuous annealing, flattening and bridging production processes, the rolling temperature is controlled to range from 580 DEG C to 620 DEG C, the cold rolling reduction rate is controlled to range from 85% to 95%, the annealing temperature is controlled to range from 708DEG C to 742 DEG C, the flattening ductility is controlled to range from 1.0% to 2.0%, and the bridging ductility is controlled to range from 0.03% to 0.10%; and according to the obtained IF isotropicsteel, the surface roughness Ra ranges from 0.36 micrometer to 0.56 micrometer, the peak concurrent Pc is larger than or equal to 126, the hardness ranges from 95 HV to 110 HV, the plastic strain ratio r90 value is larger than or equal to 1.8, the work-hardening exponent n90 value is larger than or equal to 0.18, and the delta r value is smaller than or equal to 0.20. The beneficial effect that when a round component is deeply stamped, no earing or galling defect is generated is achieved.

The method modifies surface of material of carbon cathode by using compound of containing lithium so as to obtain material of carbon cathode of lithium ion cell. The material of carbon cathode produced according to the disclosed method possesses full even surface structure. Favorable cohesiveness and cycle performance is possessed between cathodes prepared from the material and afflux body of cathode. Advantages of the invention are: good operability and repeatability, and stable product quality.

A Fe/Co/N/MWCNTs catalyst is obtained as follows: an iron-ion-doped polyaniline (PANI) and carbon nanotube (MWCNT) compound is heated at 900DEG C to obtain an iron-containing catalyst FeNC; and the FeNC containing a cobalt salt is calcined at different temperatures to obtain the composite catalyst FeCoNC. With the increase of calcination temperature, the surface structure of the catalyst tends tobe uniform. The surface structure of the catalyst with the calcination temperature of 500DEG C is most even and smooth, and sintering occurs when the temperature is above 500DEG C. A higher nitrogen content can improve the ORR electroactivity of the catalyst. The catalyst with the calcination temperature of 500 DEG C has highest ORR electrocatalytic activity. ORR initial potentials in acidic and alkaline solutions are 0.63 and-0.12V (vsSCE), respectively, current densities are 11.67 and 9. 83mAmg-1@-0.3V(vsSCE) respectively, and the catalyst has good thermal stability and catalytic activity stability. The catalyst obtained by stepwise adding Fe and Co and calcining at 500 DEG C after addition of the Co has excellent ORR electrocatalytic activity.

The present invention relates to a method for producing composite panels in a continuously operating press (1). In the continuously operating press (1), the pressing blanks (7) are clamped and/or pressed in an area of material feeding segment before a main pressing area along a production direction (22) through steel strips (2,3) which operate around a bending roller (10) and are supported through a rolling rod (4), wherein in the area of material feeding segment, a material feeding segment heating plate (16) and/or hinging plate (12,13) which are used for regulating the geometric dimension of the material feeding segment clearance (E) along the production direction can adjust the clearance of the material feeding segment heating plate (16) and/or the hinging plates (12,13) and/or can be bended. The settlement solution of the utility model is characterized in that: in passing the areas (I,II) of the material feeding segment, the basically linear material feeding segment heating plate (16) which is perpendicular with the production direction (22) and at least two basically linear hinging plates (12,13) that are perpendicular with the production direction (22) are used on a surface side (33) in at least one segment along the production direction (22); and the bended material feeding segment heating plate (16) which is bended perpendicularly with the production direction (22) at least in the area along a longitudinal middle line (LML) along the direction of the pressing blank (7) from the opposite surface side (33). Additionally, the invention also relates to a continuously operating press.

The invention relates to the field of preparation of natural polymer/inorganic nanosheet composite materials, and especially relates to a high-strength polysaccharide-MXene composite microsphere and a preparation method thereof. The surface of MXene is rich in hydroxyl groups, hydrogen bonds can be formed through -OH/-O- and -O-/-OH on a polysaccharide molecular chain, an additional physical cross-linking point effect is achieved, subsequent chemical cross-linking is assisted, and the high-strength polysaccharide-MXene composite microsphere is prepared. Protein adsorption and pressure flow velocity curve experiments show that the composite microsphere is good in biocompatibility, the operation flow velocity is greatly improved compared with that of a pure polysaccharide microsphere, and the composite microsphere has great application potential in the fields of biological catalysis and high-flow-velocity egg white spectrum separation.

The invention provides a SERS substrate material and a preparation method thereof. The preparation method comprises the following steps: preparing a nanometer alumina coating with a certain thickness and uniform pore size distribution from boehmite; impregnating the coating in a precious metal precursor solution; and carrying out deposition and immobilization of precious metal nanoparticles by using a method employing a combination of a reducing agent and irradiation by a high-pressure mercury lamp. The method uses cheap raw materials, is simple in process and has easily controllable process conditions; and the obtained SERS substrate material has good stability and uniform hot spot distribution and shows high sensitivity and repeatability in ultralow-concentration detection.

The invention provides a preparation method of a single pure-phase bismuth ferrite material based on ionic compensation, which belongs to the field of ceramic material preparation. Firstly, a bismuth ferrite ceramic reaction mixture is prepared and then is dried for presintering for the first time; then 0.3 to 0.7wt percent of bismuth oxide is added through secondary ball milling for ionic compensation, and drying is performed for presintering for the second time; 0.2 to 0.4wt percent of bismuth oxide is added through third ball milling for ionic compensation, drying is performed for presintering for 0.5 to 1.5 h at 810 to 835 DEG C, and natural cooling is performed to room temperature along with a furnace, so as to obtain the single pure-phase bismuth ferrite material. According to the preparation method, the bismuth oxide and ferric oxide are used as raw materials, and three-step sintering and twice ionic compensation are adopted to prepare the single pure-phase bismuth ferrite material, so as to solve the technical problem of composition segregation caused by volatile bismuth oxide in the preparation process of bismuth ferrite and prepare the single pure-phase bismuth ferrite material.

The invention concerns a metering system for the inking of rollers in a printing machine. The task of the invention is based on creating a metering system that achieves, with minimum expense, a uniform, stable ink guidance on a roller surface and noticeably improves the print quality. The task is solved in that, in the direction of rotation of a roller <bold>1, </highlight>preferably after a contact zone <bold>10, </highlight>where ink separation occurs, a plating device <bold>12 </highlight>is adjustable to the outer surface of the roller <bold>1. </highlight>

The invention discloses a super-hydrophilic chitosan quaternary ammonium salt hydrogel composite membrane and a preparation method and application thereof. The preparation method comprises the following steps of: adding chitosan quaternary ammonium salt powder into an acetic acid aqueous solution, and heating and stirring to obtain a transparent solution A; adding and dissolving a reinforcing agent acrylamide and a cross-linking agent into an acetic acid aqueous solution, then adding an initiator, and stirring until the initiator is completely dissolved to obtain a solution B; mixing the solution A and the solution B, and stirring well to obtain pre-gelled liquid with a room-temperature self-crosslinking function; and by taking an ultrafiltration membrane as a base membrane, transferring the pre-gelled liquid to the surface of the base membrane by adopting a surface multi-time coating method, and after cross-linking and curing at room temperature, putting the pre-gelled liquid into a blast oven for heat treatment to obtain the super-hydrophilic chitosan quaternary ammonium salt hydrogel composite membrane. The preparation method disclosed by the invention is simple. The surface of the obtained composite membrane is super-hydrophilic, the flux of the composite membrane is higher than that of a membrane prepared by a traditional single loading method, the anti-pollution performance is remarkably enhanced, and the composite membrane has a relatively high rejection rate on divalent cations.

A fine structure body comprising first fine metal particles, which have head regions projected upwardly from a surface of a base body, is utilized. A substance capable of undergoing specific binding with a test body is fixed to the head regions of the first fine metal particles. Second fine metal particles, to which a substance capable of undergoing specific binding with the test body has been fixed, are dispersed in a sample liquid. The test body is detected from variation of a resonance wavelength of localized plasmon resonance, which variation occurs when the test body is adsorbed to the surface of the fine structure body by being sandwiched between the substance fixed to the first fine metal particle and the substance fixed to the second fine metal particle.

The invention relates to a master device which can be used in a method for producing a recording medium. A substantially spiralling or concentrically extending main track structure and at least one substantially spiralling or concentrically extending secondary track structure are configured on the master device. The secondary track structure is arranged at least on one side of the master track structure, and the secondary structure has disruptions varying an optically detectable surface property of the recording medium to such an extent that a first auxiliary information is produced on the recording medium.

The invention discloses a double-sided heat-sealing matt film which is sequentially composed of an upper surface layer, a core layer and a lower surface layer. The upper surface layer is prepared from the following raw materials in parts by mass: 44-50 parts of polypropylene, 35-40 parts of high-density polyethylene, 25-30 parts of an ethylene-1-octylene copolymer, 5-8 parts of matting powder and 1-3 parts of lanthanum-doped nano silicon dioxide. The invention also discloses a preparation method of the double-sided heat-sealing matt film. The double-sided heat-sealing matt film disclosed by the invention has excellent matting performance and heat-sealing performance, and has a good application prospect in the field of food packaging.

The invention discloses a CdS/ZnS-NiS nano-cluster photocatalyst and a preparation method and application thereof, and belongs to the technical field of photocatalysis. In the CdS/ZnS-NiS nano-cluster photocatalyst, semiconductors CdS and ZnS and a non-metal cocatalyst NiS are uniformly distributed in the nanoscale, and a nano-cluster with a porous structure is formed by self-assembly while a close contact interface is formed. The preparation method comprises the following steps: taking cadmium acetate, zinc acetate and nickel acetate as precursors, obtaining the CdS/ZnS-NiS nano-cluster photocatalyst which is composed of non-noble metals and has a nanoscale close contact interface through a one-step hydrothermal method. The catalyst system has a nanoscale close contact interface and excellent photocatalytic activity, so that the catalyst system can be applied to hydrogen production by photocatalytic decomposition of water.