14 results about "Iron oxide black" patented technology

The present application provides a kind of iron oxide black and its preparation method and use, the preparation method includes: in the suspension reaction liquid is passed into the oxygen-containing gas and carries out the glue, obtains thick black reaction liquid, the suspension reaction liquid is formed by ferrous salt and alkaline aqueous solution contact;Then, under the condition of not less than 85 DEG C with oxygen-containing gas contact to remove crystallization water, form iron oxide black.In the iron oxide black particle formed by using the method in this application as pigment, can effectively reduce the amount of pigment, reduce the user production cost.

The invention relates to a venturi tube-based iron oxide preparation device, which comprises a reaction kettle, a venturi tube, a circulating pump, an oxygen storage device, a gas mixing cylinder and the like, a solid-liquid mixed reactant is stored in the reaction kettle, the reaction kettle is provided with a circulating gas outlet, a circulating liquid outlet and a circulating liquid inlet, and the gas mixing cylinder mixes air and oxygen and then inputs the mixture into the venturi tube; a liquid reactant enters the Venturi tube through the circulating pump, gas and liquid are fully mixed in the Venturi tube and then return to the reaction kettle, and a stainless steel heating tube is arranged in the reaction kettle to provide a heating environment. A filtering tank, a fine hole partition plate, a liquid level sensor, a temperature sensor, an oxygen content sensor and the like are further arranged. The device achieves the technical effects that oxygen in the air fully reacts with solid-liquid mixed reactants, iron oxide yellow, iron oxide red and iron oxide black can be produced according to different proportions, the universality of the device is improved, meanwhile, the efficiency of the circulating pump is improved, the service life of the circulating pump is prolonged, it is guaranteed that the reaction is conducted at the appropriate temperature and under the appropriate oxygen content, and product discharging is facilitated.

The invention belongs to the field of polymer composite materials, and discloses a high-strength heat-resistant thixotropic metal repairing agent and a preparation method and application thereof.The repairing agent is prepared from a component A and a component B according to the mass ratio of 100: (1-5), the component A comprises the following components in parts by weight: 100 parts of high-strength heat-resistant vinyl ester resin, 15-25 parts of modified alumina powder, 20-30 parts of chopped glass fiber powder, 10-15 parts of iron oxide black, 1-2 parts of a dispersing agent BYK-W908, 1-2 parts of a coupling agent KH570, 0.5-1 part of an accelerant N, N-dimethyl benzylamine and 10-15 parts of fumed silica; and the component B comprises the following components in parts by weight: 8-12 parts of a carrier solvent, 5-10 parts of an initiator and 3-8 parts of a thixotropic agent. According to the metal repairing agent disclosed by the invention, the comprehensive performance balance of rapid curing, high strength, high temperature resistance and high thixotropy is realized through the collaborative design of two components and optimization of a gradient filler reinforcing system, a double-thixotropic agent regulation mechanism and a rapid curing system, and the technical limitations of low curing rate, low temperature resistance grade and easiness in sagging of a traditional repairing agent are effectively overcome.

The invention discloses a chlorination process waste acid resource reutilization method which comprises the following steps: S1, firstly neutralizing chlorination process waste acid, and controlling the neutralization pH value to be 2.5-3.5; s2, then adding iron oxide black seed crystals; s3, carrying out oxidation treatment on the system added with the seed crystal, further neutralizing the system, and controlling the neutralization pH to generate large-particle-size iron black; and S4, carrying out separation to separate the large-particle-size iron black from other precipitates so as to obtain an iron black product. The waste acid is neutralized firstly, the pH of the waste acid is increased, and iron oxide black is prevented from being dissolved again during subsequent iron oxide black seed crystal. And then iron black crystal seeds are added, so that ferric hydroxide which is neutralized and separated out during subsequent oxidation treatment is promoted to be converted into large-particle-size iron black crystals, the particle size of the iron black crystals is obviously larger than that of precipitates of other metal ions, the iron black crystals can be effectively separated from the other precipitates, and the purity of the iron black product is greatly improved.

The invention belongs to the technical field of screening equipment, and discloses screening equipment for iron oxide black processing, which comprises a screening box, the left end of the screening box is hinged with a sealing door plate, and the top end of the screening box is fixedly provided with a top cover; the horizontal pushing mechanism is arranged in the screening box; and the driving mechanism is arranged outside the screening box. Through arrangement of a rotating rod, a first round block, a flat push rod, a driving rod and a second round block, after a driving motor is started, a driving shaft can drive the driving rod and the second round block to rotate, so that the outer surface of the second round block generates thrust on the inner surface of the top end of the rotating rod, and the rotating rod is pushed to rotate with a fixed rod as the axis; further, the inner surface of the bottom end of the rotating rod generates thrust on the first round block to push the first round block to drive the connecting rod and the horizontal push rod to reciprocate, so that the situation that the screening efficiency of the screening equipment is affected due to accumulation of the iron oxide black can be prevented.

The invention relates to a single-component acrylic acid asphalt anti-corrosion coating for rusty coating. The coating comprises the following components in parts by mass: 6-10 parts of water, 1-2 parts of a dispersing agent, 0.2-0.3 part of a pH regulator, 0.4-0.6 part of a defoaming agent, 5-7 parts of aluminum triphosphate, 4-5 parts of iron oxide black, 45-55 parts of an acrylic emulsion, 12-16 parts of asphalt, 2.5-3 parts of a coalescing agent, 0.4-0.6 part of an anti-flash-rust aid, 0.8-1.2 parts of a flatting agent, 0.8-1.2 parts of an anti-rust aid, 12-16 parts of graphene oxide composite microspheres and 2-10 parts of a silicon dioxide compound. The anticorrosive paint has the effects of improving the corrosion resistance and long-acting corrosion resistance of the anticorrosive paint.

The invention relates to the technical field of production of iron oxide series pigments, in particular to a method for preparing high-tinting-strength iron oxide black by using industrial waste residues through an addition method, which comprises the following steps: mixing a ferrous sulfate solution with the concentration of 25-30g / 100ml and the pH value of 4-4.5 with a proper amount of NaOH aqueous solution, adjusting the pH value to 8.5-9, stirring for reaction, and separating to obtain Fe (OH) 2 gel; continuously stirring the iron mud after high-speed stirring with the Fe (OH) 2 gel, then putting the mixture, a proper amount of water and an additive into a first reaction kettle, and stirring to react for 1-1.5 hours at the reaction temperature of 90-95 DEG C; then introducing the mixture into a second reaction kettle for reaction, stirring and reacting for 2.5-3 hours at the reaction temperature of 135-140 DEG C; and finally, sequentially sieving, cleaning, dehydrating, drying and crushing to obtain the product. The method is short in reaction time in the preparation process, low in energy consumption and high in product tinting strength.

The application discloses a disc type friction plate capable of quickly repairing a pair of friction surfaces and a preparation method thereof, and relates to the technical field of brake friction. The technical points of the application are as follows: the friction plate is prepared from the following components: phenolic resin 10-13% by mass, synthetic graphite 5-8% by mass, graphite coke 5-8% by mass, steel fiber 15-20% by mass, barium sulfate 15-20% by mass, chabazite 5-8% by mass, vermiculite 5-8% by mass, aramid fiber 2-4% by mass, iron oxide black 3-5% by mass, and elastic particles 10-15% by mass. The phenolic resin, barium sulfate and iron oxide black are 200 mesh, the synthetic graphite, graphite coke and vermiculite are 80 mesh, and the chabazite is 100 mesh. When the friction plate is used to repair a brake disc, a part of polytetrafluoroethylene binder is separated out from the friction plate, and the polytetrafluoroethylene, phenolic resin and friction generated abrasive dust are adhered to the pair of friction surfaces, so that the direct friction between the metal-based friction material and the brake disc is blocked, and the generation of friction welding is avoided.

The invention relates to a polystyrene composite material as well as a preparation method and application thereof. The polystyrene composite material comprises the following components in parts by weight: 100 parts of polystyrene resin, 0.1-0.3 part of a composite neutral filter, 3-6 parts of nano zinc oxide and 0.5-1.5 parts of a light stabilizer, the composite neutral filter comprises the following components: indium sulfide and black iron oxide. According to the polystyrene composite material provided by the invention, through the design of the components and the mutual cooperation of the components, the polystyrene composite material has a broadband neutral filtering characteristic and excellent environmental stability and processability.

The invention discloses a super black gel pen ink composition and a gel pen refill, the ink composition comprises 15%-25% of a composite black nano pigment, 1%-3% of a light absorption enhancer, 5%-10% of a dispersant, 50%-80% of an aqueous solvent, 1%-3% of a hydrophobic cross-linking agent, 0.3%-1.5% of a pH regulator, 0.1%-0.3% of a preservative, 0.5%-2% of a lubricant and 0.2%-0.5% of a thickener, the composite black nano pigment is prepared by compounding carbon black, iron oxide black and graphene carbon quantum dots according to the mass ratio of (3-7): (1-4): (1-4), organic molecules containing multiple conjugated structures are selected as the light absorption enhancer, and after the light absorption enhancer and the composite pigment have a synergistic effect, the blackness of the ink is further improved, and the ink has a good application prospect. And the chemical stability of the light absorption enhancer ensures that the light absorption enhancer is effective in ink for a long time.

The invention belongs to the technical field of raw material conveying, and discloses a feeding mechanism based on magnetic iron oxide black production, which comprises a base, a material collecting device fixedly mounted at the top of the base, and a recoverable feeding mechanism comprising a collecting mechanism movably clamped in the material collecting device. The top of the material collecting device is fixedly connected with a feeding device, and the top of the material collecting device is fixedly provided with an active feeding device. A moving block moves towards the feeding device on a rail, so that a spherical shell can push a push plate to move through a connecting rod and a fixed block, torsion springs installed on the connecting rod and the moving block can help the push plate to be close to the inner wall of a hopper all the time, scrap iron raw materials are fully pushed at a constant speed, and the problems that when the hopper is flatly laid, feeding is not uniform, and the feeding efficiency is high are solved. And therefore, fine scraps are accumulated on the two sides of the conveying crawler belt, and equipment is easy to damage.

This application relates to the field of waterborne ceramic coatings, mainly to a waterborne ceramic composition with normal total emissivity and antibacterial effect, its preparation method, and its application. A waterborne ceramic composition with normal total emissivity and antibacterial effect comprises the following raw materials: modified nano-zinc oxide silica sol matrix, silane coupling agent, acid catalyst, compound high-emissivity filler, additives, and water; the raw materials for preparing the modified nano-zinc oxide silica sol matrix include modified nano-zinc oxide alcohol solution, organosilicon monomer, and silica sol; the raw materials for preparing the modified nano-zinc oxide alcohol solution include nano-zinc oxide, silane coupling agent containing terminal amino groups, and mixed solvent; the compound high-emissivity filler is a combination of silicon carbide, iron oxide black, and graphene. This application can fundamentally solve the problems of nano-zinc oxide agglomeration, poor compatibility, and insufficient emissivity, effectively achieving a comprehensive effect of high antibacterial properties, high emissivity, high stability, and rapid curing.

The invention discloses a method for manufacturing a new sound-absorbing and noise-reducing material by using polyimide foam scraps, cutting and processing the scraps generated in the process of polyimide foam production into particles of different sizes, drying red iron oxide or black iron oxide or titanium dioxide as inorganic additive, and then using each component in parts by weight, putting the inorganic additive into the mixer, and then putting the polyimide foam particles of different sizes into the mixer to mix, injecting the curing agent into the mixer to continue mixing, and finally adding the catalyst into the mixer to continue mixing, putting the mixed material into the mold evenly to form the film, leaving it for 10 hours, opening the mold, taking out the product, removing the burrs, and cutting the product according to customer needs, and packing it in a carton for storage.

Disclosed are a composite resin denture porcelain block, a preparation method thereof and a composite resin denture. The composite resin denture porcelain block includes 0.1% to 15% of carbamate dimethacrylate, 0.1% to 10% of bisphenol A-di glycidyl methacrylate, 3% to 20% of triethylene glycol dimethacrylate, 35% to 85% of glass powder, 0.1% to 8% of ZrO2, 3% to 15% of SiO2, 0.1% to 40% of ZrO2—SiO2 composite powder, 2% to 17% of diatomite, 0.01% to 3% of benzoyl peroxide, 0.01% to 3% of N,N dihydroxyethyl p-toluidine, 0.01% to 3% of 2,6 di-tert-butyl p-cresol, 0.001% to 0.2% of iron oxide red, 0.001% to 0.2% of iron oxide black, and 0.001% to 0.5% of iron oxide yellow. The composite resin denture porcelain block of the present application uses carbamate dimethacrylate, bisphenol A-di glycidyl methacrylate, and triethylene glycol dimethacrylate as the resin matrix.