724results about How to "Resist erosion" patented technology

A medical electrical lead system for neurological applications has a distal portion having a plurality of independently positionable seed electrodes, each of which may be connected via an interface to an implantable medical device. The interface allows the seed electrodes to be positioned, then excess wire trimmed, facilitating simplified connection of multiple independent electrodes to a single device. Seed electrodes according to the invention are small, have relatively low mass, and are minimally destructive of surrounding tissue.

The invention relates to an ecological protection method for a high steep side slope. The method mainly comprises the steps of slope surface treatment, concrete shotcrete and rock bolt support, vegetating hole arrangement, net spreading, spray material preparation, granule spray sowing, maintenance, management, and the like. In the method, guest soil materials such as humus loam rich in organic matters and clay are utilized to undergo a granule reaction after mixed with a granule agent at the moment of spray sowing so as to form a greening template which has the same high order granule structure as natural soil and strong erosion resistance and can suppress water and soil loss. After a diversified mature plant community which is in harmony with surrounding vegetation environment is formed, the slope surface can be protected, which can effectively resist diseases and insect pests and maintain the ecological balance. Post maintenance management and expenses can be saved. All used materials can be naturally degraded, have no pollution to the environment and can purify air and beautify the environment. Equipment of the method does not need to be hung on the slope surface for construction, and spray sowing operations are carried out only below the slope surface, thus the method has high construction speed and safety. The method is suitable for slope surfaces which are difficult to green, and the like, such as various high steep and unstable slope surfaces, bare slope surfaces having high greening expected values, and the like.

The disclosure provides a goat head, as a mixing block, for multiple fluids in oilfield applications, the goat head having a reversing directional flow, mixing portion, wear reduction surfaces, and restricted outlet bore. The goat head provides an underneath approach for piping, reducing the overall height, and mixes the fluids dynamically within the goat head from angled flow paths. The goat head then reverses at least a component of the fluid flow direction that enters the wellbore below the goat head and exits the goat head into the well therebelow. The goat head to contains hardened wear surfaces, including surfaces in specific zones, to resist erosion caused by the reversing directional flow. A restricted outlet bore has a cross-sectional area that is less than the sum of cross-sectional areas of the inlets to assist in creating higher velocity and streamlined flow as the fluid exits the goat head.

Zirconia-containing ceramic compositions having a c/a ratio of the zirconia lattice in the range of from about 1.005 to about 1.016. These compositions comprise a stabilizing amount up to about 10 mole % of the composition of a stabilizer component which comprises: (1) a first metal oxide selected from the group consisting of yttria, calcia, ceria, scandia, magnesia, india and mixtures thereof in an amount of from about 1.5 to about 6 mole % of the composition of; (2) a second metal oxide selected from the group consisting of lanthana, neodymia and mixtures thereof in an amount of from about 0.5 to about 4 mole % of the composition; and (3) optionally ytterbia in an amount of from about 0.5 to about 4 mole % of the composition. These compositions further comprise hafnia in an amount of from about 0.5 to about 15 mole % of the composition; and optionally tantala in an amount of from about 0.5 to about 1.5 mole % of the composition. These compositions are useful in preparing thermal barrier coatings having a balance of reduced thermal conductivity with good producibility, spallation resistance and erosion/impact resistance for an underlying substrate of articles that operate at, or are exposed to, high temperatures.

A modular green roof and/or green wall system includes a plurality of trays adapted to support vegetation and soil therein. The trays are sized such that a person may easily lift them and install them in a pre-vegetated state upon a roof or a wall. The trays are further designed to enable subterranean irrigation lines to be inserted therethrough, thereby hiding the irrigation lines from view. Biodegradable walls may be added of different heights to the trays to support different types of vegetation, as well as to create terracing for a given installation, if desired. A wicking material may be inserted into the tray and positioned such that is makes contact with wicking material in adjacent trays, thereby spreading moisture between trays through the capillary action of the wicking material.

The nanometer mirror spraying process includes the following steps: 1. eliminating surface dust; 2. spraying primer; 3. sensitizing and activating treatment; 4. spraying solution A comprising silver nitrate solution, ammonia water solution and sodium hydroxide solution and solution B comprising sodium borohydride, potassium borohydride or p-methylaminophenol sulfate solution in the volume ratio of 1 to 1-1.7 to produce reduction; 5. shaping and developing; 6. blowing to dry; and 7. drying. The present invention has the advantages of diversified products, high corrosion resistance, suitability to mass production, high hardness, low cost, etc.

A variable area fan nozzle for use with a gas turbine engine system includes a nozzle section that is movable between a plurality of positions to change an effective area associated with a bypass airflow through a fan bypass passage of a gas turbine engine. A protective coating is disposed on the nozzle section and resists change in the effective area of the nozzle section caused by environmental conditions.

The invention discloses multifunctional nano compound treating fluid for protecting paper cultural relics. The multifunctional nano compound treating fluid takes deionized water as a solvent, and comprises nano magnesium hydroxide, nano titanium dioxide and hydroxyethyl cellulose, wherein nano magnesium hydroxide accounts for 0.2-1.0% of the weight of deionized water, nano titanium dioxide accounts for 0.1-0.8% of the weight of deionized water, and hydroxyethyl cellulose accounts for 0.2-0.8% of the weight of deionized water. The invention also discloses a preparation method of the multifunctional nano compound treating fluid. The multifunctional nano compound treating fluid can be used for large-area treatment of the paper cultural relics, and can be used for providing protection for deacidification, solidification, light-resistant degradation and mould proofing of the paper cultural relics during a large-area treatment of the paper cultural relics. The pH value of the paper cultural relics treated by the multifunctional nano compound treating fluid can reach an alkalescence degree, and the paper cultural relics have a certain alkali residue, can resist external acid, can be greatly improved in tensile strength, and have a certain antibacterial property.

An osteoinductive/osteoconductive composition prepared from a quantity, of demineralized fibrous bone elements possessing an average surface area to volume ratio of about 100:1 to about 20:1, a quantity of mostly shaped regular non-fibrous bone elements possessing an average surface area to volume ratio of about 10:1 or less and a sufficient quantity of biocompatible fluid carrier sufficient to provide the composition as a deformable mass is provided herein. Also provided is a method of using the composition to repair a bone defect site.

Disclosed herein are agglomerate blends suitable for application to a surface of a substrate by thermal spray, thereby to produce coatings, typically nanostructured coatings, that exhibit desirable properties such as erosion, abrasion, or corrosion resistance. Such coatings have many useful applications, including but not limited to an enhancement of valve reliability and durability. For example, the nanostructured coatings may be applied to valve components (i.e., balls and seats) via thermal spray processes, wherein the feedstock powder used in thermal spray may be composed, for example, of a chromium oxide composite material that meets the protective requirements against the wear and corrosion of the valve service. The thermal spray process may involve, but is not limited to, either a plasma spray or high-velocity combustion process. Through their enhanced properties, the coatings can provide superior reliability and extended life to components such as valves. Also disclosed are methods for producing the coatings, and correspondingly coated components.

The invention relates to a whitening and speckle removal skin care product, which belongs to the field of commodity chemicals and consists of the following ingredients in percentage by weight: 10 to 20 percent of ethanol extract concentration liquid of raw material medicine of radix angelicae, pseudo-ginseng, erigeron breviscapus and Indian buead, 5 to 10 percent of white fungus broth, 2to 4 percent of seabuckthorn oil, 1 to 3 percent of tartaric acid, 4 to 8 percent of emulsifying agents, 18 to 22 percent of emollient, 15 to 20 percent of humectant, 0 to 5 percent of whitening agents, 0 to 0.25 percent of thickening agents, 0 to 0.5 percent of antiseptic agents, 0 to 0.15 percent of antiinflammatory agents and the balance rose water. The pH is 6.5 to 7. A layer of natural shield can be provided for the skin, simultaneously, the product can penetrate the bottom layer of the surface layer skin to provide nutrients for the dermis, the generation of wrinkles is delayed, the generation of basical layer skin pigment is inhabited, and the skin metabolism is promoted, so the slow skin metabolism period recovers the normal state, and the roughness and the dark yellow color are eliminated.

The invention discloses a preparation method for environment-friendly weatherable road-marking paint. The preparation method comprises the following steps: 1) adding water and a thickening agent into a reaction kettle and mixing, and heating to 50-60 DEG C to disperse the mixture to form a thick paste; 2) successively adding a dispersant, calcium silicate, light calcium carbonate, titanium dioxide, reflective glass micro beads, a wetting agent and an antiwear agent into the slurry prepared in the step 1), enabling the rotation speed of the reaction kettle to be 800-1000 r/min, and dispersing for 10-15 min, so as to homogenize the mixture; 3) in the slurry prepared in the step 20, under the temperature condition of 55-65 DEG C, at a rotation speed of 400-500 r/min, successively adding aqueous polyurethane copolymerization resin, an antioxidant, an ultraviolet-resisting agent, a light stabilizing agent and a thixotropic agent, and stirring for 30-40 min, so as to homogenize the mixture; and 4) pouring an antifoaming agent into the slurry prepared in the step 3), then adding an initiator, mixing uniformly and packaging.

The invention discloses a flame-resistant corrosion-resistant coating. The flame-resistant corrosion-resistant coating is an amorphous flame-resistant corrosion-resistant coating for protecting the surface of a liner of an industrial furnace. The flame-resistant corrosion-resistant coating is characterized in that fine powder of tabular corundum and magnesium aluminate spinel, calcined alpha-Al2O3 micro-powder, pure calcium aluminate cement as a curing agent, sodium hexametaphosphate as a sintering assistant, and a phosphoric acid or aluminum dihydrogen phosphate solution as a binder are blended into the flame-resistant corrosion-resistant coating. The flame-resistant corrosion-resistant coating can resist corrosion produced by a high-concentration fluoride and a high-concentration hydrogen fluoride atmosphere, and has the advantages of high purity, good heat stability, application convenience, smooth and compact surface and relatively low cost. The flame-resistant corrosion-resistantcoating is suitable for the surface of a liner of a furnace with fluorides and a hydrogen fluoride atmosphere and also is suitable for the surface of a liner of a high-temperature and low-oxygen content furnace with a strong reduction atmosphere.

The present invention provides a process for the application of high temperature coating that provide enhanced impact resistance and erosion damage for the coatings. For high temperature coating systems that provide environmental protection to silicon based ceramics, the process provides the deposition of a silicon-based bond coat on the substrate using the directed vapor deposition with plasma activation and at least one supersonic gas jet nozzle. The process provides the deposition of an EBC layer using the directed vapor deposition with the gas jet nozzle. In one embodiment, the thermal barrier layer may also contain one or more dense embedded layers which further promote impact resistance. Within the process, the particular layers, silicon bond coat, EBC layer and/or TBC layer may be deposited together or specific novel layers applied in combination with other layers deposited using prior known deposition techniques.

Encapsulation of a permanent magnet rotor is achieved by applying a glass roving material to spaces in the rotor structure, applying a veil cloth around the outer surface of the rotor, mounting a vacuum bag with vacuum ports around the outer surface of the rotor, removing vent plugs from the end walls of the rotor and screws from an inner ring of the rotor and replacing them with vacuum ports and applying a vacuum to the vacuum ports. After air has been removed from the rotor, an encapsulating resin is applied to some of the ports to introduce resin into the interior of the rotor. After curing of the resin the vacuum bag is removed and the outer surface of the rotor is machined to the desired outer dimension of the rotor.

The invention discloses an antistatic flame-resistant environmentally stable peelable protective film and a preparation method thereof. The antistatic flame-resistant environmentally stable peelable protective film is prepared from 10 parts of a vinyl chloride/vinyl acetate resin, 1 to 4 parts of polyurethane resin, 0.05 to 0.2 parts of a conductive filling material, 0.025 to 0.1 parts of a compatibility modifier and 0.025 to 0.1 parts of plasticizers. The antistatic flame-resistant environmentally stable peelable protective film adopts a vinyl chloride/vinyl acetate resin and a polyurethane resin as film forming materials, has a volume resistivity smaller than 10<8>omega.cm, satisfies antistatic requirements, and has flame-resistant performances reaching to V0 level, acid and alkali erosion-resistant performances and a good environmental stability. The antistatic flame-resistant environmentally stable peelable protective film can be coated on the surfaces of regular and irregular metal objects, ceramic objects, cement brick tiles and polymers in multiple ways of spray coating, roller coating and brush coating. An adhesion stress acting on a base plate can be regulated and controlled through changes of types and proportions of vinyl chloride/vinyl acetate resin components and polyurethane resin components, thus the antistatic flame-resistant environmentally stable peelable protective film can be utilized for decoration and protection of different equipment and devices.

The invention relates to a composite pulverized coal dust suppressant, and a preparation method and use thereof. The composite pulverized coal dust suppressant comprises calcium chloride and sodium silicate with the ratio of two to one, 0.6 to 1.2% of polyvinyl alcohol, 4 to 6% of glycerol, 0.3 to 0.5% of surface active agent and water in balancing amount. The composite pulverized coal dust suppressant has the advantages as follows: all the chosen materials are common materials, which are nontoxic and harmless and can be naturally degraded, so that no secondary pollution can be caused; the preparation process is simple; after the composite pulverized coal dust suppressant is sprayed on the surface of bulk mineral material, a curing layer can be formed on the surface of bulk mineral material; the curing layer can bond grains on the surface of the bulk mineral material together so as to prevent wind and fix dust; therefore, the composite pulverized coal dust suppressant has certain economical and environmental benefits.

The invention relates to stemming for a taphole of an ore hearth and a preparation method thereof. The technical scheme adopted by the stemming disclosed by the invention lies in that the preparation method comprises the following steps of: firstly using 40-60wt% of bauxite, 5-15wt% of kyanite, 10-20wt% of brown fused alumina fine powder, 5-15wt% of chromium oxide fine powder, 5-15wt% of silicon carbide fine powder, 5-10wt% of silicon micro powder, 1-5wt% of titanium oxide fine powder, 1-3wt% of cerium oxide fine powder, 1-3wt% of bentonite fine powder and 1-5wt% of Al2O3/Si2N2O/SiC/C composite powder as raw materials, additionally adding an oxide additive accounting for 1-5wt% of the raw materials, and pre-mixing the raw materials and the oxide additive for 5-10 minutes in a mixing and grinding machine so as to obtain premix powder; and then adding a retarder accounting for 0.05-0.25wt% of the raw materials and an aluminum dihydrogen phosphate aqueous solution accounting for 7-15wt% of the raw materials to the premix powder, grinding the premix powder, the retarder and the aluminum dihydrogen phosphate aqueous solution for 20-30 minutes in a wet manner, and then performing stemming extrusion and shaping through a stemming extruder so as to obtain the stemming for the taphole of the ore hearth. The stemming for the taphole of the ore hearth prepared by the preparation method disclosed by the invention has the characteristics of being low in cost, high in intensity, excellent in washing resistance and excellent in corrosion resistance.

The invention discloses raw materials for preparing an anti-corrosion mullite brick, comprising calcium hexaluminate, andalusite, sillimanite, alumina, cordierite, pyrophyllite, kaolin, refractory oxide, foaming agent and binding agent. The preparation method includes the following steps: the sillimanite, alumina, cordierite, pyrophyllite, kaolin, refractory oxide and binding agent are added into a grinding machine to be ground after material preparation, so as to obtain base material; the calcium hexaluminate and andalusite are added into a kollermill to be mixed and milled for 5-10 minutes, water is added until the surface is wetted, so as to obtain particle aggregate, and the base material is added into the kollermill to be mixed, milled and stirred with the particle aggregate, so as to obtain mixture; and water is injected into the mixture and stirring is carried out to form muddy mixture and green brick is obtained, and the green brick is placed into a kiln to be sintered into the anti-corrosion mullite brick finished product. The mullite brick prepared by the raw materials and preparation method has the advantages of low thermal conductivity, good thermal insulation property and strong corrosion resistance.