58results about How to "Long-lasting and stable performance" patented technology

The antistatic paint is prepared with resin varnish 100(in weight portions, the same below), high structure carbon black 5-40 and preferably 20-25, solvent 15-50, and coupling agent 0.1-0.3. The resin varnish is acrylate, epoxy resin, polyester or polyurethane. The production process includes stoving carbon black at 60-100 deg.c, spraying carbon black with coupling agent, adding carbon blac, resin and solvent successively into container while stirring, and ball milling. The paint of the present invention has the same antistatic effect as antistatic plastic but much less consumption and thus much lower cost, and has no influence on the other performance, such as mechanical performance, of the painted body.

A high-temperature economizing abrasive coating, its use and production are disclosed. The process is carried out by mixing nanometer alumina with titanium carbide, silicon oxide and iron oxide, ball grinding, mixing with high-temperature adhesive, agitating, blending and milling to be pasted The coating consists of abrasive agent 13-18 proportion, blackening agent 15-18 proportion, preserving agent 10 proportion, binder 45-55 proportion and additive 7 proportion. It's fine and dense; it has better binding strength and abrasive performances and no bubble. It can be used for internal wall of boiler in coal-fired power plant, pipeline and metallurgical industry with temperature above 1200 deg. C.

The invention discloses a compound medical dressing and a preparation method thereof, belonging to the field of compound medical dressings. The compound medical dressing comprises bacterial cellulose membranes, collagens and crosslinking agents, wherein the collagens are crosslinked on the bacterial cellulose membranes via the crosslinking agents. The preparation method comprises the steps of adding the purified bacterial cellulose membranes to a collagen solution containing the crosslinking agents and enabling the bacterial cellulose membranes and the collagens to carry out crosslinking reaction, thus obtaining the compound medical dressing. The loads of the collagens on the bacterial cellulose membranes and the loading stability of the collagens are improved by using the crosslinking agents, so that the properties of the prepared compound medical dressing are more lasting and stable. The method is simple, is easy to operate and has relatively high practicability.

The invention provides an antibacterial material and a preparation method thereof. The antibacterial material is characterized by comprising a polymer matrix in which silver-loaded non-metallic mesoporous materials are scattered. The preparation method of the antibacterial material includes the steps that the silver-loaded non-metallic mesoporous materials are prepared; the silver-loaded non-metallic mesoporous materials and raw materials containing polymer monomers are subjected to in-situ polymerization and direct spinning of melt or polymerized products are subjected to blended spinning so that antibacterial fibers containing the silver-loaded non-metallic mesoporous materials can be prepared; or the silver-loaded non-metallic mesoporous materials and polymer materials are blended and pelletized, and the antibacterial fibers containing the silver-loaded non-metallic mesoporous materials are prepared through melt spinning. The material has a lasting antibacterial effect.

The invention discloses a hydrophilic modification method of a PVDF multihole film, relates to a film modification method, belongs to the field of multihole film modifying, and aims at solving the technical problems that the PVDF multihole film is high in hydrophobicity, the driving force needed in the separating process is large, the water flux is low, and the PVDF multihole film is contaminated easily in the using process. The hydrophilic modification method comprises the following steps that a solution with the mass concentration of 2-acrylamide-2-methyl propanesulfonic acid ranging from 20 percent to 40 percent is prepared, methyl methacrylate and azodiisobutyronitrile are added to the solution, and a reaction system is obtained; the reaction system is heated, reduced pressure distillation is carried out, the reaction system is poured into precipitator, precipitate is obtained and dried, and copolymer is obtained; the copolymer, polyvinylidene fluoride and polyvinylpyrrolidone are added to dimethylformamide to be stirred and cooled to the indoor temperature, the mixture is subjected to standing, and casting film liquid is obtained; the casting film liquid is poured to a glass plate on a film laying machine for film laying, the casting film liquid is dried, and then the PVDF multihole film is obtained. The modified PVDF multihole film is high in hydrophilia.

This invention discloses a high density polyethylene drainage protection plate and its manufacturing method. Sealing excrescent shell is pressed out on high density geomembrane to form a kind of film and shell continuous, and stereo space board. The geomembrane components is that high density polyethylene, flexibilizer, polyethylene wax processing agent, carbon black agglomerate, antioxidant and organic tin stabilizer, the weight percent is that high density polyethylene 85-90%, low density polyethylene 5-10%, polyethylene wax processing agent 0.3-0.5%, carbon black agglomerate 1-1.5%, antioxidant 0.5-1.0%, organic tin stabilizer 1.5-2%. The preparation method is materials mixed by high and low speed mixer, double screws extruder extrusion, pelleting single screw extruder extrusion, filtering mould shaping cooling, and mould pressing. Water source can be drained immediately by this invention.

The invention discloses a high-performance iron-doped nickel- or cobalt-based amorphous oxyhydroxide catalyst prepared by a room temperature method, and a research thereof on high-efficiency hydrogen production by electrolyzing water, and belongs to the technical field of hydrogen production by electro-catalytic materials. According to the technical scheme, FeCl3. 6H2O and ethyl alcohol are mixed to form a precursor solution to conduct surface slow corrosion on conductive substrates such as foamed nickel and cobalt produced in a macro-scale mode, and a nickel-iron or cobalt-iron oxide catalyst grows on the surfaces of the conductive substrates in situ. A chemical reduction reaction is creatively introduced, and the excellent oxygen evolution catalyst is obtained on a commercial metal conductive substrate by utilizing chemical corrosion at room temperature. According to the unique material synthesis path, the non-noble metal cobalt or nickel-based oxygen evolution catalyst shows excellent oxygen evolution activity in an alkaline environment after in-situ iron doping, the overpotential is reduced to about 280 millivolts at the large current degree of 500 mA/cm<2>, the operation is stable in the large-current environment of 1.5 A/cm<2> or above, and the catalyst is suitable for industrial large-scale application and has wide application prospects. And the hydrogen fuel automobile and hydrogen energy industry in China is assisted.

The invention relates to the technical field of membrane preparation and concretely relates to a method for a hydrophilic charged ultrafiltration membrane by blending with an AM-AMPS copolymer. The method comprises the following steps of preparing an AM-AMPS copolymer, blending the AM-AMPS copolymer as an additive and a membrane preparation material to obtain a membrane formation liquid, and preparing the ultrafiltration membrane blended with the AM-AMPS copolymer by a nonsolvent-induced phase separation method. Through blending, the AM-AMPS copolymer is introduced, a use amount, hydrophily and charge properties of the AM-AMPS copolymer can be controlled easily, and the AM-AMPS copolymer is not lost in use and has permanent hydrophily and charge properties. The method has simple processes, can be realized easily, has a low cost, realizes large scale application and is especially suitable for filtration and treatment on oil field three mining waste water containing an acrylamide polymer as a main pollutant.

The invention relates to a formula and processing technique for a composite material product, in particular to a formula and processing technique of a novel halogenide-cumming resistant magnesite greenhouse skeleton. The formula is characterized by comprising the following components in percentage by weight: 58 percent of craft-level magnesium oxide of which the content of magnesium oxide is 85 percent, 21.6 percent of craft-level magnesium chloride of which the content of magnesium chloride is 56 percent, 2 percent of polyvinyl alcohol, 0.6 to 1.6 percent of organic silicon water repellent, proper amount of 5-mesh-below fiberglass roving, and 17.5 percent of water. The complex formula and the technique of using the organic silicon water repellent to replace magnesium sulfate to realize hygroscopic absorption and inhibit the halogenide-cumming of magnesite products are adopted, so the process is simplified and the cost is lowered. The organic silicon water repellent can form a fine water repellent film on the surfaces of pores in the magnesite product, the inner surfaces of capillaries of magnesite product and the surfaces of the magnesite products. The film can also react with carbon dioxide in air to form a carbonizing film with stronger hydrophobic property.

The invention provides a multi-component triblock fluorosilicone copolymer with a sequence structure. The multi-component triblock fluorosilicone copolymer has extremely low surface energy, and can beused as an electronic protective agent to coat and modify various electronic components such as printed circuit boards, resistors, capacitors, sensors, display screens, touch screens and the like. Therefore, the multi-component triblock fluorosilicone copolymer has a waterproof effect in a humid environment, and the functional damage caused by water is avoided. According to the invention, trithioester is used as an RAFT reagent; a triblock fluorine-silicon copolymer with a sequence structure can be formed; the fluorine-containing hydrophobic and oleophobic coating has an ordered and controllable structure, can generate a surface micro-phase separation behavior in a film forming process, forms a gradient structure, promotes the enrichment of fluorine-containing chain segments on the surface, remarkably improves the surface hydrophobic and oleophobic properties of the material under the condition of low fluorine content, can improve the adhesive force between the coating and a base material, and has the effect of remarkably improving the comprehensive properties of the coating.

The invention discloses a preparation method and application of a visible light catalysis antibacterial material cuprous oxide/ZIF-8 heterojunction, ZIF-8 is taken as a substrate, Cu2O is loaded on the surface of the ZIF-8 in situ by adding copper salt, a surfactant, sodium hydroxide, a reducing agent and the like, and the Cu2O/ZIF-8 heterojunction photocatalysis antibacterial material with the Cu2O coating the ZIF-8 is constructed. The construction of the Cu2O/ZIF-8 heterojunction stabilizes the structures of ZIF-8 and Cu2O on one hand, and promotes the generation of ROS (reactive oxygen species) through heterojunction interface electron migration under the excitation of indoor visible light on the other hand, so that microorganisms such as bacteria and the like die quickly. An antibacterial test shows that the sterilizing rate of the low-concentration Cu2O/ZIF-8 heterojunction (5 [mu] g mL <-1 >) on escherichia coli can reach 99% or above in 15 min under a fluorescent lamp (fluorescent lamp, 13W) with weak light intensity.

The invention relates to a novel suspension type thermal insulation soundproof system for a wall. The system comprises keels, spray coating filling type thermal insulation bodies and a decoration plate, wherein the keels are arranged between the spray coating filling type thermal insulation bodies and the decoration plate, and the spray coating filling type thermal insulation bodies are filled among the wall, the keels and the decoration plate in a spray coating manner. Compared with the prior art, the novel suspension type thermal insulation sound-proof system has the advantages of high thermal insulation and heat insulating property, excellent fireproof performance, good soundproof effect, stability, easiness in construction and the like.

The invention discloses a constant-volume inflation and deflation measuring device for an SF6 gas chamber, belongs to the technical field of SF6 equipment, and solves the problem of how to design a device capable of accurately measuring the volume of gas in the SF6 gas chamber when the pressure in the SF6 gas chamber is low or high. When the pressure in the SF6 gas chamber is too high, deflation measurement is carried out, and when the pressure in the SF6 gas chamber is too low, inflation measurement is carried out. The measuring device cannot measure the pressure in the SF6 gas chamber undertwo conditions at the same time, and the application range is wide. The constant-volume inflation and deflation tank is adopted to replace a weighing device, temperature and pressure measurement underdifferent conditions is achieved through a temperature sensor, a pressure sensor and a control valve set, the weighing device does not need to be carried to the site to weigh a gas steel cylinder, and the device is simple in structure and convenient to install.

The invention discloses a PET three-layer scratch resistant protective film. The PET three-layer scratch resistant protective film comprises a protective layer, a use layer and a release layer, and the three layers are orderly bonded. The protective layer comprises a PET raw film and a silica gel layer. The use layer comprises a hardened coating, a PET raw film and a silica gel layer. The release layer comprises a PET raw film. The hardened coating of the use layer is bonded to the silica gel layer of the protective layer. The silica gel layer of the use layer is bonded to the PET raw film of the release layer. The PET three-layer scratch resistant protective film has hardened layer hardness greater than or equal to 5H, can resist friction of steel wool 0000#, has obvious scratch resistance, can effectively protect a screen, has light transmittance of 93% and has lasting and stable use effects and performances. The PET three-layer scratch resistant protective film has a service life 2-3 times that of a common hardened protective film in the market.

The invention discloses a preparation method and an application method of a single-component annulus plugging agent. The single-component annulus plugging agent comprises the following components: 100parts by weight of epoxy resin, 15-20 parts by weight of a curing agent, 10-20 parts by weight of a diluent, 0-50 parts by weight of a filler and 0-1.5 parts by weight of a coupling agent. The preparation method comprises the steps: preparing according to a formula, and uniformly stirring. The application method comprises the steps: injecting a plugging agent into the annulus of a casing pipe ina cementing truck pumping manner, settling to a leakage channel under the action of positive pressure difference and gravity, and crosslinking and curing under the high-temperature condition of the leakage channel in a well to form a plugging effect with good sealing property, strong differential pressure resistance and lasting and stable performance. The plugging agent not only can be stably settled and cured in an annulus protection liquid, but also is adjustable in viscosity density and curing temperature, and is suitable for leakage plugging in different well bottom environments. And a single-component system can be prepared, so that field operation is facilitated.

The invention provides a lithium manganate storage battery special for hybrid vehicles. A positive electrode material comprises a lithium manganate-containing positive active substance, a conductive agent accounting for 5-15% of the mass of the positive active substance, and an N-methylpyrrolidinone dissolved binder accounting for 5-10% of the mass of the positive active substance. A negative electrode material is composed of 85-95% of a negative active substance, 3-10% of a conductive agent and 2-10% of the N-methylpyrrolidinone dissolved binder. The positive active substance is a mixture of layered lithium manganate and more than one of lithium cobaltate, spinel type lithium manganate and lithium iron phosphate in a mass ratio of 1-2:0-1; the negative electrode material is mixture of more than one of natural graphite, artificial graphite, mesocarbon microbeads, hard carbon, lithium titanate, tin-based alloy and silicon-based alloy. The lithium manganate storage battery special for hybrid vehicles provided by the invention makes full use of the superiorities of the lithium manganate positive electrode material and polymer li-ion batteries, and has the advantages of smaller volume, lighter weight, longer life, better high temperature resistance, easier maintenance, more stable performance, and more environmental protection, etc.