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406results about How to "Prevent flocculation" patented technology

High-temperature (800 DEG C) wear-resistant paint and preparation method thereof

The invention discloses high-temperature (800 DEG C) wear-resistant paint and a preparation method thereof. The high-temperature wear-resistant paint comprises a component 1 and a component 2, wherein the component 1 is prepared by mixing a component A and a component B; the component A in the component 1 comprises the following components: black silicon carbide, fine-grain aluminum oxide, dispersing agent, zinc oxide, modified epoxy resin, flatting agent and an auxiliary material; the component B in the component 1 comprises the following components: organic silicon modified epoxy resin, a filler, antimony trioxide, film-forming assistant and thickener; and the component 2 is curing agent and coupling agent. The high-temperature (800 DEG C) wear-resistant paint is prepared by the following steps: mixing the component A and the component B in the component 1, and curing the component 1 with the component 2. The high-temperature wear-resistant paint is prepared by compounding the double components, has excellent high temperature resistance and wear resistance, and also has the fine properties of favorable hardness, high heat stability, ductility, workability and the like. The invention also designs the method for preparing the high-temperature wear-resistant paint. The preparation method is simple and low in cost.
Owner:JIANGSU XIN AN NEW MATERIALS TECH

Viscose containing natural antimicrobials and preparation method thereof

The invention provides viscose containing natural antimicrobials. The viscose containing the natural antimicrobials comprises the viscose and the antimicrobials contained in the viscose. The viscose containing the natural antimicrobials is characterized in that the antimicrobials is natural indigowoad leaf extract powder, a natural indigowoad leaf extract powder solution added with dispersing agent is added into a viscose filature stock solution, the additive amount of the natural indigowoad leaf extract powder is 1%-7% of the quality of the viscose filature stock solution, the additive amount of the dispersing agent in the natural indigowoad leaf extract powder solution is 0.1%-1.0% of the quality of water in the natural indigowoad leaf extract powder solution. The preparation method of the viscose comprises the steps of dissolving the indigowoad leaf extract powder into water and adding the dispersing agent to obtain the indigowoad leaf extract powder solution, adding the indigowoad leaf extract powder solution to the viscose filature stock solution according to a ratio of 10%-14% of the quality of the viscose filature stock solution, and then shaping a obtained solution according to conventional wet spinning jet process to obtain the viscose. The viscose has a durable antibacterial function and has no side effect on human bodies. The preparation method has reasonable and simple technology, and is suitable for industrialized production.
Owner:单修铎

Method for forming a glittering coating film and glittering coated object

InactiveUS20060057363A1Less feelingUnprecedented variationLayered productsPretreated surfacesWeather resistanceVarnish
Disclosed is a method for forming a glittering coating film in which after a glittering base coating film is formed on a substrate to be coated by applying thereto a glittering base coating material containing a colloid particle liquid containing noble metal or copper colloid particles, said glittering base coating film is heated or set, and then a clear coating film is formed by executing any one of the following processes (A) to (F). By the method, a glittering coating film is provided which has weathering resistance and high gloss, and develops a metal feeling or a coloring metal feeling giving rise to a less feeling of metal particles than by the plating-tone coating film, and superior in design property. (A) a process of forming and heating a top clear coating film by applying a clear coating material thereto, and heating the formed top clear coating film; (B) a process of forming and heating a glittering clear coating film by applying thereto a glittering clear coating material containing a glittering material, which is different from said noble metal or copper colloid particles; (C) a process of forming and heating a glittering clear coating film by applying thereto a glittering clear coating material containing a glittering material, which is different from said noble metal or copper colloid particles, and then forming and heating a top clear coating film by applying a clear coating material thereto; (D) a process of forming and heating a matting clear coating film by applying thereto a matting clear coating material; (E) a process of forming and heating a top color clear coating film by applying thereto a color clear coating material; and (F) a process of forming and heating a glittering clear coating film by applying thereto a glittering clear coating material containing a glittering material, which is different from said noble metal or copper colloid particles, and then applying a color clear coating material to form a top color clear coating film, and heating the resultant.
Owner:NIPPON PAINT AUTOMOTIVE COATINGS

Low-silicon aluminum-containing steel and production method thereof

InactiveCN102747269AAvoid flocculationMeeting control targets for low silicon contentFlocculationHigh carbon
The invention relates to a production method of low-silicon aluminum-containing steel. The method is characterized in that: in converter terminal-point molten steel, the content of C is no lower than 0.05at%, the content of P is no lower than 0.020at%, and a tapping temperature is 1630-1670 DEG C. High-carbon ferromanganese and aluminum-manganese-titanium deoxidizing agents are added, and a refining target is that [Al]=0.060-0.080at%. In the LF refining furnace, component fine tuning is carried out, wherein addition amounts of medium-carbon ferromanganese and aluminum wires are determined according to alloy elements of the converter molten steel. Wire feeding treatment is carried out by using Ca-Fe wires, wherein a requirement on molten steel before calcium treatment is that [Al]=0.045-0.060at%. The Ca-Fe wires are vertically fed, wherein a feeding speed is no lower than 2.1m/s, and a [Ca]/[Al] mass ratio is 0.08-0.12. During continuous casting production, a superheat degree is controlled at 25-35 DEG C, and a casting speed is controlled within a range of 2.2-2.6m/min. When casting is started, 10 Ca-Fe wires are added in a middle-ladle T-port. When a large ladle begins casting, 3-5 Ca-Fe wires are added into the middle-ladle at the 1 and 6 flow stoppers. The method provided by the invention is advantaged in that: under a premise that a technical route is not changed, outlet flocculation blocking during continuous casting of the steel is avoided with a specific technology, and a control target of low silicon content is satisfied.
Owner:INNER MONGOLIA BAOTOU STEEL UNION

Method for simultaneously improving sludge anaerobic digestion efficiency and reducing ecotoxicity of heavy metals

The invention relates to a method for simultaneously improving sludge anaerobic digestion efficiency and reducing the ecotoxicity of heavy metals. According to the method, after straws are activated with a ZnCl2 solution, straw biochar is prepared under a 550 DEG C high-temperature anaerobic condition, and further modification is performed by using an HCl solution and microwave; and by using modified biochar as carrier, a zero-valent nano-iron loaded modified biochar composite material HCl-FBC is prepared through a chemical reaction. According to the present invention, by adding the modified biochar composite HCl-FBC to the anaerobic digestion reactor at the initial stage of sludge anaerobic digestion, the organic matter conversion rate of sludge can be significantly increased, and the cumulative gas production of methane can be increased; HCl-FBC can easily increase the microbial diversity and the activity of the digested sludge and change the microbial community structure; and with the method, the sludge anaerobic digestion efficiency can be significant increased, the biogas production can be increased, the biological toxicity of the heavy metal in the digested sludge is effectively reduced, and the great significance is provided in the resource utilization of sludge and the reduction of the risk of sludge land use.
Owner:TONGJI UNIV

Process and device for sewage nitrogen and phosphorus removal integrating physical and biochemical filtration

The invention discloses a process and device for sewage nitrogen and phosphorus removal integrating physical and biochemical filtration. The device is formed by a physical filtering tank, a hypoxia denitrification biological filter / an aerobic nitrification biological filter denitrification system, a phosphorus removal adsorption filtration reaction system and a PLC control system. Sewage enters the physical filtering tank, outflow water of the physical filtering tank can first enter the hypoxia denitrification biological filter / the aerobic nitrification biological filter denitrification system to be denitrified, and outflow water enters the phosphorus removal adsorption filtration reaction system to be dephosphorized thoroughly; or outflow water first enters the phosphorus removal adsorption filtration reaction system to be dephosphorized and then enters the hypoxia denitrification biological filter / the aerobic nitrification biological filter denitrification system to be denitrified; sewage having been denitrification and dephosphorized enters a clear water area and finally flows into a disinfecting tank, and the sewage is disinfected and discharged. According to the process and device, a phosphorus removal chemical does not need to be added, phosphorus in the sewage can be removed, the process is short, the investment cost is reduced, the operation cost is low, and sludge is treated easily.
Owner:HUAQI ENVIRONMENT PROTECTION SCI & TECH

Water-based cutting fluid for metal processing and preparation method of water-based cutting fluid

The invention discloses water-based cutting fluid for metal processing and a preparation method of the water-based cutting fluid. The cutting fluid mainly consists of a lubricating agent, a metal antirust agent, an anti-wear reagent at extreme pressure, a nonionic surfactant, a dispersing agent, an antifoaming agent and water, and the cutting fluid comprises the following components in percentage by weight: 8-12 percent of oleic acid, 1.8-2.5 percent of triethanolamine, 0.3-0.6 percent of boric acid, 0.2-0.5 percent of benzotriazole, 5-8 percent of sodium carbonate, 10-12 percent of polyethylene glycol, 0.2-0.5 percent of dodecylphenol polyoxyethylene ether (OP-10), 0.7-1 percent of glycine betaine, 0.5-0.8 percent of glycerin polyoxypropylene ether and the balance of water. According to the water-based cutting fluid disclosed by the invention, the problems that the conventional water-based cutting fluid is poor in antirust and lubricating performances, low in recycling period and harmful to the human and environment are solved, and the aims of improving the lubricating effect and the antirust performance, realizing harmlessness to the environment and a human body and reducing the production cost of metal processing are achieved by virtue of synthesis of polybasic esters.
Owner:中钢集团郑州金属制品研究院股份有限公司

Dip-coating water-based paint for transmission shaft and preparation method thereof

InactiveCN106867368AWith cleanQuick-drying at room temperatureAnti-corrosive paintsEpoxy resin coatingsWater basedEpoxy
The invention discloses dip-coating water-based paint for a transmission shaft and a preparation method thereof and relates to the technical field of metal water-based paint. The dip-coating water-based paint is prepared from the following raw materials in parts by weight: 20 to 40 parts of waterborne acrylic modified epoxy resin and epoxy modified acrylic resin, 0.3 to 3 parts of a drier, 0.4 to 1.5 parts of a pH (Potential of Hydrogen) regulator, 0.6 to 1.5 parts of a dispersant, 0.3 to 0.5 part of a de-foaming agent, 0.05 to 3 parts of carbon black, 0.01 to 1 part of graphene oxide, 4 to 12 parts of iron oxide black, 2 to 20 parts of antirust pigment, 3 to 8 parts of talcum powder, 0.5 to 8 parts of heavy calcium carbonate, 3 to 8 parts of barium sulfate, 0.05 to 0.15 part of an anti-sedimentation agent, 2 to 3 parts of a film forming auxiliary agent, 0.1 to 0.5 part of a wetting agent, 0.1 to 0.5 part of a leveling agent, 0.1 to 0.5 part of a flash-rust resisting agent, 0.1 to 1.2 parts of a thickener and 10 to 28 parts of water. The water-based paint has the advantages of easiness of improving a film thickness, high rigidity, good wear-resisting and corrosion-preventing effects, capability of being rapidly dried at room temperature and extremely low VOC (Volatile Organic Compounds) content.
Owner:HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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