649 results about "Barium sulphate" patented technology

The invention relates to the technical field of solid waste treatment, in particular to a harmless barium slag compound and a preparation method and application thereof. The preparation method comprises the following steps: grinding barium slag and desulfurized gypsum, mixing with water, and standing and curing to obtain a harmless barium slag compound; the mass ratio of the barium slag to the desulfurized gypsum is limited to be (1-10.1): 1; the mass ratio of the water to the mixture of the barium slag and the desulfurized gypsum is (0.18-0.32): 1; soluble sulfate provided by the desulfurized gypsum is used, free barium ions in the barium slag are fixed through precipitation, barium sulfate is formed, and harmless fixation is achieved. The leaching concentration (horizontal oscillation method) of heavy metal ions in the barium slag is lower than the drinking water standard and the hazardous waste identification standard, and harmless treatment of the barium slag is achieved. The problems of reduction, harmlessness and recycling of industrial solid waste (desulfurized gypsum) and hazardous waste (barium slag) can be solved, and collaborative resource utilization and environmental protection of the solid waste and the hazardous waste are promoted.

The invention relates to the technical field of sulfur-iodine circulating hydrogen production, in particular to a thermochemical iodine-sulfur-barium circulating hydrogen production process and a thermochemical iodine-sulfur-barium circulating hydrogen production system, which comprises the following steps: reacting excessive Ba < 2 + > with sulfuric acid in a Bunsen reaction product to obtain barium sulfate so as to obtain a first reaction mixed solution containing HI, BaSO4, H2O, BaI2 and a small amount of unreacted I2; sequentially carrying out cyclone separation, liquid removal and filter pressing to obtain a barium sulfate filter cake and a second mixed solution containing HI, H2O and BaI2; the method comprises the following steps: crushing a barium sulfate filter cake, performing high-temperature decomposition, returning gas generated by decomposition to participate in Bunsen reaction, and dissolving BaO generated by decomposition into Ba < 2 + >; and reboiling the second mixed solution to obtain hydrogen iodide steam, cooling a product obtained by decomposing the hydrogen iodide steam, carrying out gas-liquid separation to obtain hydrogen, and returning liquid obtained by gas-liquid separation to participate in the Bunsen reaction of the next cycle. Barium circulation is introduced, the process is simplified, the dosage of elemental iodine is reduced, and the cost is low.

The invention discloses a water-borne epoxy resin coating which comprises a component A and a component B, the component A is prepared from 60 to 80 parts of 50 percent modified water-borne epoxy resin emulsion, 5 to 15 parts of deionized water, 0.5 to 1 part of wetting dispersant, 0.2 to 0.8 part of defoaming agent, 5 to 10 parts of modified zinc phosphate, 3 to 5 parts of ion exchange antirust pigment, 4 to 6 parts of sericite powder, 3 to 5 parts of glass flake, 5 to 10 parts of precipitated barium sulphate, 1 to 5 parts of nano silicon dioxide and 0.5 to 1 part of rheological additive; 1 to 2 parts of modified organic bentonite slurry; 0.1 to 0.3 part of a pH conditioning agent; and 0.2 to 0.8 part of a flash rust inhibitor. The component B is prepared from 40 to 50 parts of waterborne epoxy-amine adduct, 20 to 30 parts of 50 percent modified polyamide curing agent, 5 to 15 parts of 60 percent Mannich base phenolic aldehyde amine curing agent, 0.5 to 1.5 parts of epoxy silane coupling agent, 1 to 2 parts of nonionic surfactant and 15 to 20 parts of deionized water. The emulsion stability of the waterborne epoxy resin coating is improved through a bisphenol A / F mixed epoxy emulsion and a grafted polyethylene glycol hydrophilic chain segment.

The invention belongs to the technical field of drilling fluid, and particularly relates to a free radical polymerization water-based drilling fluid composition and a preparation method thereof. The invention relates to a core-shell composite particle-containing water reducer which comprises deionized water, salts (NaCl / KCl), alkalis (Na2CO3 and NaOH), barium sulfate and core-shell composite particles X. The particle is composed of a silicon dioxide core and a polymer shell layer, and the shell layer is formed by free radical copolymerization of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and acrylic acid and is covalently connected with the core through silanization treatment. Under the conditions of high salinity, strong alkali and high solid phase weighting, the drilling fluid simultaneously realizes the following effects: (1) high-density bearing and low-viscosity pumpability are realized; (2) compact plugging and water loss reduction and low formation damage flowback can be realized; and (3) stable rheology rock carrying, lubrication and friction resistance reduction. The problem that three aspects of performance are difficult to consider in the prior art is solved, and the drilling fluid is suitable for drilling of deep wells, ultra-deep wells and complex stratums and has remarkable industrial application value.

The invention relates to the technical field of polypropylene materials, in particular to a self-cleaning and scratch-resistant composite PP material and a preparation method thereof.The composite PP material is prepared from, by weight, 55-75 parts of polypropylene resin, 4-10 parts of filler, 1-3 parts of scratch-resistant agent, 5-10 parts of compatilizer, 1-5 parts of surfactant, 0.1-0.5 part of antioxidant and 0.7-1.5 parts of lubricant; the scratch-resistant agent is silicone powder; the filler is a micron-sized filler and a nano-sized filler, the micron-sized filler is one or two of barium sulfate and calcium sulfate, and the nano-sized filler is modified nano silicon carbide or a mixture of modified nano silicon carbide and hydrophobic modified gas-phase nano silicon dioxide; the modified nano silicon carbide is characterized in that the surface of nano silicon carbide is modified through a silane coupling agent; the self-cleaning composite PP material has the advantage that the scratch resistance of the self-cleaning composite PP material is improved.

The invention belongs to the technical field of coatings, and particularly relates to an irradiation-resistant fireproof coating and a preparation method thereof. The radiation-resistant fireproof coating comprises a component A and a component B. The component A comprises, by weight, 15-35 parts of organosilicon modified epoxy resin, 5-10 parts of an active diluent, 20-50 parts of a dehydration char-forming catalyst, 3-10 parts of a foaming agent, 5-10 parts of a flame retardant, 0.1-0.5 part of expanded graphite, 5-10 parts of refractory fibers and 3-15 parts of a radiation-resistant filler. The radiation-resistant filler comprises silane coupling agent modified nano barium sulfate and micron boron carbide; and the component B is an amine curing agent. According to the radiation-resistant fireproof coating and the preparation method thereof, by adopting the specific silane coupling agent modified micro-nano radiation-resistant filler, the radiation-proof performance uniformity and the fire resistance after radiation resistance of the coating are effectively improved, and the radiation-resistant fireproof coating can be widely applied to nuclear power plants and various nuclear industry facilities.

The invention discloses a nano two-dimensional sheet modified flexible wear-resistant fluorocarbon coating as well as preparation and application thereof. The nano two-dimensional sheet modified flexible wear-resistant fluorocarbon coating comprises paint and an isocyanate curing agent in a mass ratio of (7-10): 1, the paint vehicle comprises the following components in parts by mass: 15-25 parts of an organic solvent, 30-40 parts of fluorocarbon resin, 5-10 parts of castor oil polyol, 1-3 parts of a dispersing agent, 0.5-1 part of a defoaming agent, 20-30 parts of titanium dioxide, 10-20 parts of barium sulfate, 0.1-1 part of a nano two-dimensional sheet, 0.5-2 parts of a thickening agent and 0.1-1 part of a flatting agent; according to the invention, after the castor oil polyol is added into the fluorocarbon resin for mixing and dissolving, in the curing process, hydroxyl of the castor oil polyol can be cured with isocyanate to form a film, and a polyurethane-fluorocarbon interpenetrating polymer network is formed, so that the flexibility of the fluorocarbon coating is improved; meanwhile, the flexibility and wear resistance of a coating film can be improved by adding the nano two-dimensional sheet into the paint vehicle, and the nano two-dimensional sheet modified flexible wear-resistant fluorocarbon coating disclosed by the invention is good in wear resistance and flexibility.

A “Passive Radiative Coating” (PRC) is designed to dissipate heat generated mainly by solar radiation, intended for use in the manufacture of overhead conductors and cables. Additionally, this coating can dissipate heat produced by the conductors themselves, known as the Joule effect, providing environmental protection and significantly improving heat dissipation capacity. The PRC is composed of at least one filler, at least one binder, and at least one surfactant. In particular, the use of calcium carbonate and / or barium sulfate as fillers, and epoxy resins, alkyd varnishes, polyurethane dispersions, casting resins, silicone-based varnishes, and sodium silicate as binders are highlighted. The surfactant is used to stabilize the mixture and acts as a stabilization additive.

The invention discloses micro-chemical continuous synthesis equipment and preparation method of nano barium sulfate / barium carbonate, and the micro-chemical continuous synthesis equipment comprises a support frame for bearing the whole equipment; the outer shell is fixed on the support frame, and a plurality of annularly distributed arc-shaped openings are formed in the lower part of the outer shell; the top of the inner shell is fixedly connected with the top of the outer shell, and the lower portion of the inner shell is provided with an adjusting arc opening corresponding to the arc opening. The rotary adjusting assembly is rotationally arranged between the outer shell and the inner shell; the continuous phase conveying device is fixedly arranged in the center of the upper part of the inner shell; the dispersed phase conveying device is fixed in the center of the lower part of the inner shell; the adjusting conveying device corresponds to the arc-shaped opening in the outer shell and is fixed on the outer side of the dispersed phase conveying device; and the collecting assembly is fixed at the bottom of the dispersed phase conveying device and corresponds to the inner shell and the outer shell. According to the invention, controllable growth of crystal grains can be realized, the product size is uniform, the nanocrystallization degree is high, and supporting facilities such as front-end pretreatment and rear-end filtering and drying of a traditional process can be coupled.

The invention discloses a thermoplastic elastomer for an eraser and a preparation method of the thermoplastic elastomer, and belongs to the technical field of thermoplastic elastomer materials. The thermoplastic elastomer for the eraser is prepared from the following raw materials in parts by weight: 20 to 30 parts of styrene-butadiene block copolymer, 10 to 20 parts of polyolefin resin, 30 to 40 parts of softening operation oil, 30 to 50 parts of filler and 5 to 10 parts of tackifying resin, the filler comprises one or more of calcium carbonate, talcum powder, kaolin, mica, wollastonite, barium sulfate, carbon black, white carbon black, titanium dioxide and anhydrous sodium sulphate; the tackifying resin comprises one or more of monomer resin, poly alpha olefin, coumarone resin and phenolic resin; the thermoplastic elastomer material prepared by the invention has good temperature resistance, yellowing resistance, high transparency and high erasing rate, and can be widely applied to high-grade eraser products with high added value.

The invention relates to the technical field of high polymer materials, in particular to a light-aging-resistant flame-retardant ABS material for an electric fitting box and a preparation method of the light-aging-resistant flame-retardant ABS material. Comprising the following raw materials: ABS resin, AS resin, ABS high rubber powder, CPE, bromotriazine, carrier-free antimony trioxide master batch, a flame retardant synergist, precipitated barium sulphate, titanium dioxide, a main antioxidant, an auxiliary antioxidant, a lubricant, an anti-dripping agent, a dispersing agent and an ultraviolet absorbent. The material has excellent flame retardant property, and the synergistic effect of the flame retardant components such as the bromotriazine and the like reaches a high flame retardant grade; the ultraviolet absorbent and the titanium dioxide can delay aging and stabilize the color; the melt flow rate is high, and the fluidity is improved through cooperation of high-melt-index ABS and low-molecular-weight AS resin; the mechanical property is good, and the raw materials cooperate to guarantee strength and toughness; the appearance quality is good, pocking marks are avoided, and the glossiness is good. The preparation process is simple, and conventional equipment and reasonable parameters ensure stability and operability.

The present invention addresses the problem of providing a curable resin composition having excellent abradability and excellent chemical resistance and permeation resistance during printing. [Solution] A curable resin composition comprising (A) an epoxy resin, (B) an epoxy resin curing agent, and (C) an inorganic filler, the (C) inorganic filler comprising at least three types of silica (C1), calcium carbonate (C2), and barium sulfate (C3).

The invention provides an environment-friendly self-repairing single-component waterborne polyurethane waterproof coating and a preparation method thereof. The environment-friendly self-repairing single-component waterborne polyurethane waterproof coating is prepared from the following components in percentage by mass: 35 to 45 percent of waterborne hyperbranched polyurethane resin, 10 to 15 percent of titanium dioxide, 15 to 20 percent of barium sulfate, 5 to 10 percent of modified quartz powder, 0.1 to 1 percent of a thickening agent, 0.2 to 0.3 percent of a sterilizing agent, 3.5 to 6.5 percent of an auxiliary agent and the balance of water. The waterproof coating contains certain fluorine atoms, so that a paint film has relatively stable long-acting hydrophobic performance after being dried, and the paint film can be kept clean and self-cleaning for a long time; in addition, the modified quartz powder has the effect of enhancing the mechanical property and stability of the paint film; and meanwhile, the paint film forms a compact network structure in the drying process, so that the paint film has relatively good flexibility and relatively high hardness. In addition, the components contain more active groups, so that the paint film can be self-repaired.

The invention belongs to the technical field of wear-resistant coatings, and particularly relates to a wear-resistant coating for a metal plate of a compressed garbage truck and a preparation method of the wear-resistant coating. The invention aims to solve the problem that an existing coating for the metal plate of the garbage truck is difficult to keep good protection performance under corrosion and abrasion. The preparation method comprises the following steps: carrying out pre-reaction grafting modification on epoxy resin and amine-terminated polyether to obtain an epoxy prepolymer; alpha-aluminum oxide and barium sulfate are mixed, dispersed, ground and subjected to surface activation, and a basic filler is obtained; adding a mica filler into the basic filler, and shearing and mixing to obtain a composite filler; mixing the epoxy prepolymer with a phosphate auxiliary agent to obtain a primer; dispersing and mixing the epoxy prepolymer and the composite filler to obtain a functional coating; after a metal base material is subjected to sand blasting treatment, primer is pre-sprayed on the surface of the metal base material, and then functional paint is covered and sprayed to obtain the wear-resistant coating. The wear-resistant coating prepared by the invention can keep good protection performance under corrosion and wear, and has high application value.

The invention discloses an epoxy metal primer as well as a preparation method and application thereof, the epoxy metal primer is applied to a rust removal and rust prevention coating and coating system, the epoxy metal primer has remarkable salt fog resistance, adhesive force and weather resistance, a zinc phosphate and aluminum triphosphate composite rust prevention pigment, a modified epoxy emulsion and a high-density barium sulfate filler are adopted, the coating has excellent shielding performance, and the service life of the coating is prolonged. Corrosive media can be effectively blocked, and the salt spray resistance time is remarkably prolonged; meanwhile, the modified polysiloxane defoaming agent, the wetting leveling agent, the optimized curing agent and the optimized flash-rust inhibitor are adopted, so that the binding force between the coating and various metal substrates is enhanced, and the integrity of the coating is kept under the conditions of long-term mechanical shock, thermal cycle and damp heat. The coating is suitable for various construction conditions, simple and convenient to operate, compact and flat in coating film and capable of being widely applied to the fields of bridges, ships, petrochemical equipment and the like, the service life of a metal structure is remarkably prolonged, and maintenance and replacement cost is reduced.

The invention discloses anti-radiation hydrogel capable of being used for interventional radiosurgery and a preparation method and application thereof.The anti-radiation hydrogel is in bridge connection with polymer chains of sodium alginate and sodium hyaluronate through the physical interaction between Fe < 3 + > and carboxyl, and the reversible interaction between Fe < 3 + > and carboxyl endows the hydrogel with the shear thinning characteristic; the injectability is ensured; the bismuth oxide nano-particles and the barium sulfate nano-particles are doped to achieve efficient attenuation of X-rays in the range of 20-100 keV, and meanwhile, the complementary K-edge absorption characteristics of the bismuth oxide nano-particles and the barium sulfate nano-particles are utilized, and the radiation absorption effect of a hydrogel network structure is combined, so that broad-spectrum radiation protection is achieved; according to the invention, acrylamide is taken as a raw material, an interpenetrating network elastic hydrogel of three polymers is formed under the action of polymerization under thermal initiation of acrylamide, the conversion from an injectable state to a solid state is realized, and at the moment, the cured hydrogel has tough mechanical properties, can also form a protective layer similar to gloves, and can be used for radiation protection in interventional operations.

The invention relates to the technical field of metallurgical waste slag treatment, and discloses a high-titanium blast furnace slag treatment and resource utilization method, which comprises the following steps: adding industrial barium sulfate and limestone into a preheated electric furnace, and introducing high-temperature molten blast furnace slag into the electric furnace to uniformly mix; the electric furnace is started for heating, and heat preservation is conducted for 1-3 h after heating; heating is stopped, slag is discharged, and molten slag is poured into a water quenching slag pool to be subjected to water quenching quenching treatment; water-quenched slag is filtered out and aired, and the water-quenched slag is ground into ore pulp through a wet ball mill; metallic iron in the ore pulp is separated out through magnetic separation, and tailing pulp and concentrate pulp are obtained through further reselection of the ore pulp; filtering and drying the concentrate pulp to obtain a titanium-rich material, carrying out acid leaching treatment on the titanium-rich material, filtering to obtain a titanium-rich solution and barium sulfate, and recycling the barium sulfate; and further removing impurities from the titanium-rich solution to obtain titanium dioxide. According to the method, titanium resources in the blast furnace slag are efficiently recycled, and meanwhile barium sulfate is adopted as a medium to be recycled.

To provide a coating composition capable of forming a coating film excellent in blocking resistance and anticorrosion properties.SOLUTION: The coating composition contains: (A-1) at least one pigment having an aspect ratio of 1 or more and less than 5 and selected from barium sulfate, silica, and calcium carbonate; and (A-2) a scaly pigment having an average particle diameter of 2-30 μm and an aspect ratio of 5 or more and less than 30. The mass ratio of (A-1):(A-2) is within the range of 90:10-70:30.SELECTED DRAWING: None

The invention relates to the technical field of impurity removal equipment, in particular to a barium sulfate impurity removal device for purification treatment, which comprises a working barrel, an upper cover is arranged on the upper side of the working barrel, an electric control discharge valve is arranged on the lower side of the working barrel, a driving device is arranged on the upper side of the upper cover, and a driving rod is fixedly mounted at the output end of a gearbox of the driving device. A stirring assembly is arranged in the working barrel, an impurity removing assembly is arranged in the working barrel corresponding to the lower side of the stirring assembly, a drying assembly is arranged in the working barrel corresponding to the lower side of the impurity removing assembly, and an auxiliary assembly is arranged on the side face of the working barrel corresponding to the impurity removing assembly. When the impurity density is smaller than or larger than that of barium sulfate, barium sulfate and impurity layers are different, and the auxiliary assembly can guide the corresponding layers to flow to proper positions for treatment according to different conditions, so that the barium sulfate can be treated through the device after impurities in the barium sulfate are detected; and material transferring operation in different places is not needed.

To provide an aqueous coating composition which enables formation of a metallic coating film having high designability, and enables formation of a coating film exhibiting good coating film physical property.SOLUTION: An aqueous coating composition set for multilayer coating film formation contains a first base coating composition forming a first base coating film, and a second base coating composition forming a second base coating film, wherein the first base coating composition contains a first coating film forming resin, a first curing agent, a first inorganic brightener and a first hydrophobic association type viscous agent, the first inorganic brightener is one or more kinds selected from the group consisting of silica, talc, calcium carbonate, kaolin, barium sulfate, and diatomaceous earth, the second base coating composition contains a second coating film forming resin, a second curing agent, a second bright material, a second inorganic viscous agent, a second hydrophobic association type viscous agent, and a second dispersion agent, and the second inorganic viscous agent contains a layered material having such a laminated structure that a large number of inorganic crystal layers are laminated.SELECTED DRAWING: None

The invention discloses an ultra-thick solvent-free epoxy coating for an offshore steel pipe pile as well as a preparation method and application of the ultra-thick solvent-free epoxy coating. The ultra-thick solvent-free epoxy coating is prepared from a component A and a component B, the component A comprises the following components in percentage by mass: 20-25% of epoxy resin, 20-25% of silicon branched modified epoxy resin, 2-5% of a reactive diluent, 10-20% of calcium carbonate, 10-20% of natural barium sulfate, 2-5% of graphene, 10-15% of glass flakes, 5-10% of silica powder, 5-10% of zinc phosphate, 0.8-2% of a thixotropic agent and 0.2-0.3% of a flatting agent; and the component B comprises 15-30% of a curing agent, 15-25% of talcum powder, 15-25% of natural barium sulfate, 10-15% of titanium dioxide, 5-10% of zinc phosphate and 0.2-0.3% of a leveling agent. According to the present invention, the adhesion, the salt resistance, the wear resistance and the aging resistance of the epoxy coating can be improved, and the epoxy coating can be used for the anti-corrosion coating of the offshore steel pipe pile close to or in contact with seawater.

The invention relates to a tinting base for a tinted coating composition, in particular for forming a tinted coating on a board material, comprising - at least one organic polymer binder with a glass transition temperature (TG) according to EN ISO 16805 > 45°C, preferably > 50°C, furthermore preferably > 55°C, - at least one filler made of barium sulfate and / or calcium carbonate, having (iii) an average particle size D50 of 1-20 µm, preferably of 1-15 µm, furthermore preferably of 2-10 µm, and (iv) an oil absorption according to DIN EN ISO 787-5 of 1-22 g / 100 g, preferably of 2-18 g / 100 g, furthermore preferably of 3-15 g / 100 g, - at least one wax, - conventional additives and - water. The invention further relates to a tinted coating composition for forming a tinted coating on a panel material.

The invention relates to the technical field of surface corrosion prevention, and discloses a high-strength corrosion-resistant steel bar surface epoxy coating and a preparation method thereof. The high-strength corrosion-resistant steel bar surface epoxy coating comprises the following components in parts by weight: 1-5 parts of modified polyaniline / TiO2 powder, 8-10 parts of aluminum triphosphate, 8-10 parts of zinc phosphate, 8-10 parts of talcum powder, 10-15 parts of barium sulfate, 100-200 parts of modified epoxy resin, 50-100 parts of a curing agent, 10-20 parts of an accelerant and 1-3 parts of a flatting agent. The modified polyaniline / TiO2 high-strength corrosion-resistant epoxy coating provided by the invention has the advantages of self-cleaning, scratch resistance, corrosion resistance, wear resistance and the like, and polyaniline has excellent host capability of capturing nano particles and can be co-doped with some active inorganic nano particles to effectively improve the solubility and corrosion resistance of the nano particles. And the modified epoxy resin has the characteristic of high temperature resistance, so that more comprehensive protection is further provided for the reinforcing steel bar. The method is low in cost and environment-friendly, and has good social and economic benefits.

The utility model discloses a liquid-phase synthesis system of lithium sulfide. Comprising a first lithium sulfate dissolving device, a first barium sulfide dissolving device, a chemical combination reaction device, a first separation device and a second separation device, the liquid phase after-treatment unit is used for concentrating, purifying and drying the liquid phase to obtain lithium sulfide, and the solid phase after-treatment unit is used for washing and drying the solid phase to obtain barium sulfate; the first lithium sulfate dissolving device and the first barium sulfide dissolving device are both connected with a raw material inlet of the combination reaction device; and a reaction product outlet of the combination reaction device is connected with the first separation device. The liquid-phase synthesis system of the lithium sulfide has the advantages that products are easy to separate, the purity of the lithium sulfide products is high, the liquid-phase synthesis system of the lithium sulfide is very suitable for industrial-scale production, and the produced high-purity anhydrous lithium sulfide is very suitable for solid-state battery anode materials and has huge potential economic benefits.

The application relates to the technical field of paint, and particularly discloses a water-based insulating paint and a preparation method; the water-based insulating paint comprises components A and B, the mass ratio of the components A and B is (7-9):1, the component A comprises the following raw materials in parts by weight: deionized water 100-150 parts, bentonite 3-8 parts, fumed silica 3-8 parts, titanium white 40-80 parts, barium sulfate 90-110 parts, mica powder 40-60 parts, zinc phosphate 60-80 parts, feldspar powder 40-60 parts, epoxy emulsion 400-500 parts, base material wetting agent 3-5 parts and dispersant 30-80 parts; the component B comprises the following raw materials in parts by weight: curing agent 40-60 parts and solvent 40-60 parts; the dispersant comprises a sulfonate dispersant and a polycarboxylate dispersant; the application promotes the insulating performance of the paint through the synergistic effect of various components, reduces the agglomeration of particles in the paint system, and improves the dispersing performance of the paint.

The invention relates to the technical field of sound insulation materials, in particular to a high-performance sound insulation material for buildings and a preparation method thereof, and the high-performance sound insulation material comprises the following raw materials in parts by weight: 60-80 parts of polypropylene, 15-25 parts of filler, 10-20 parts of talcum powder, 5-15 parts of flexibilizer, 0.2-1 part of antioxidant and 0.2-0.4 part of light stabilizer. According to the invention, the SEBS with high damping performance is utilized to provide a main viscoelastic effect, and the density performance of the material can be directly increased by combining the barium sulfate material with high density, so that the low and medium frequency sound insulation function is improved, and the hollow glass beads can utilize the spherical surfaces to cause scattering and refraction of sound waves and disturb the propagation direction of the sound waves in the hollow glass beads; meanwhile, in cooperation with the high radius-thickness ratio state of the mica sheet, sound waves are further dispersed and refracted in combination with the hollow glass beads, the conduction path of the sound waves is prolonged, and therefore the medium-high frequency sound insulation performance is improved, and the sound insulation performance of the material is effectively improved.

This application discloses a method for producing an anticorrosion coating having excellent adhesion to rusted, low-treatment surfaces, which relates to the field of paint chemical industry. The anticorrosion coating comprises Component A and Component B, where Component A comprises an epoxy resin, double-coated hollow glass microbeads, a thixotropic agent, a wetting and dispersing agent, a pigment, barium sulfate, talc, Solvent A, an antifoaming agent, a first silane coupling agent, and an aluminum powder paste, and Component B comprises a curing agent, an accelerator, and Solvent B.

The invention relates to the technical field of coatings, and particularly discloses a water-based insulating coating and a preparation method thereof. The water-based insulating paint comprises a component A and a component B, and the mass ratio of the component A to the component B is (7-9): 1; the component A is prepared from the following raw materials in parts by weight: 100 to 150 parts of deionized water, 3 to 8 parts of bentonite, 3 to 8 parts of fumed silica, 40 to 80 parts of titanium dioxide, 90 to 110 parts of barium sulfate, 40 to 60 parts of mica powder, 60 to 80 parts of zinc phosphate, 40 to 60 parts of feldspar powder, 400 to 500 parts of epoxy emulsion, 3 to 5 parts of base material wetting agent and 30 to 80 parts of dispersing agent; the component B comprises the following raw materials in parts by weight: 40-60 parts of a curing agent and 40-60 parts of a solvent; the dispersing agent comprises a sulfonate type dispersing agent and a polycarboxylate type dispersing agent; through the synergistic effect of all the components, the coating has good insulating performance, meanwhile, the phenomenon that particles are agglomerated in a coating system is reduced, and the dispersing performance of the coating is improved.

The invention belongs to the technical field of water treatment, and particularly discloses a green scale inhibitor for barium sulfate and a preparation method thereof, the scale inhibitor is a product generated by esterification reaction of polysuccinimide and hydroxyethyl methylacrylate under alkaline conditions, and a copolymer formed by graft copolymerization of aconitic acid and sodium lignin sulfonate, wherein the mass ratio of polysuccinimide to hydroxyethyl methylacrylate to aconitic acid to sodium lignin sulfonate is 2: 4: (1-6): (1-4). The scale inhibitor is a composite copolymer formed by polymerizing and grafting a product obtained after esterification of polysuccinimide / hydroxyethyl methylacrylate, aconitic acid and sodium lignin sulfonate, has carboxyl, hydroxyl, amino, sulfonic acid and other groups at the same time, and can generate strong interaction with key ions or sites in the BaSO4 crystal growth process, so that the scale inhibitor can be used for inhibiting the growth of BaSO4 crystals. The normal growth and aggregation of BaSO4 crystals are prevented, so that the formation of BaSO4 scales is effectively inhibited.

The invention discloses a high-temperature-resistant composite nanofluid scale inhibitor and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The composite nano fluid scale inhibitor is prepared from modified graphene oxide nano AP-GO, a calcium-based nano modifier calcium-based polysulfonic acid Ca-PAMPS, a surfactant, an inorganic salt and deionized water, the calcium-based nano modifier calcium-based polysulfonic acid contains a large amount of sulfonic acid, carboxylic acid and hydroxyl groups, has strong hydrophilicity, calcium ion tolerance and calcium ion chelating property, and has a good scale inhibition effect on calcium carbonate scale and barium sulfate scale; meanwhile, the modified graphene oxide nanoparticles have large-scale conjugated rings, a large amount of carboxylic acid and hydroxyl groups, and have synergistic interaction with calcium-based polysulfonic acid under the action of anion shielding and large steric hindrance effects, so that the high temperature resistance and scale inhibition performance of the nano scale inhibitor are further improved, a good scale inhibition effect is achieved, and the problems of oilfield water injection and fracturing flowback scaling are effectively solved; good popularization prospects are realized.