1638 results about "Barium sulphate" patented technology

A system for emitting diffused ultraviolet radiation for the disinfection of air, water, food or other surfaces includes a laser for generating a laser beam in a desired wavelength range and a beam shaping system. The beam shaping system includes a beamsplitting optical element for splitting the laser beam into a plurality of beamlets and at least one diffusive reflective element for reflecting at least one beamlet with a diffused radiation profile wherein the at least one diffusive reflective element comprises one of polytetrafluoroethylene (PTFE) and barium sulphate.

Ink-jet recording material having a support material and pigment layers provided on the support material, and wherein the pigment layers comprise at least a lower layer containing barium sulphate and upper layer containing an aluminum oxide.

The invention discloses a resin bendable grinding wheel and a preparation method and a device thereof. The resin bendable grinding wheel consists of brown aluminium oxide, calcined alumina, white alundum, black silicon carbide, phenolic resin powder, phenolic resin liquid, cryolite, barium sulphate, pyretic, iron oxide red, Hunori gel, alkali-free high tensile glass fiber mesh and non-woven black cloth. Compared with the prior art, through the optimization configuration on the aspect of the material selection and working procedures, the strength, the flexibility and the aging resistance of the grinding wheel are greatly improved, and at the same time, the resource and the energy are saved; and the strength of the grinding wheel is more than 80m/s, the grinding ratio is more than or equal to 1:15, the maximum bendable angle can reach 40 degrees, the tensile strength is greatly improved, the service life is prolonged by two times, the energy consumption is reduced by 5 to 10 percent, and the yield of the finished product can reach more than 99 percent.

The invention discloses a waterborne residual rust antirust coating and a preparation method thereof. The waterborne residual rust antirust coating is prepared from styrene-acrylic emulsion, water soluble epoxy resin, water soluble acrylic resin, iron oxide red, graphene, zinc oxide, barium sulphate, transforming agents, a transformation accelerator, a levelling agent, a defoaming agent, a dispersing agent, a thickening agent and water. The waterborne residual rust antirust coating contains no organic solvent, is environment-friendly and pollution-free, has the characteristic that bottom and surface are combined and has an excellent physical and chemical antirust and rust transforming function, is applicable to rust protection of the surface of steel with rust, a hard oxidation skin layer or an oil paint film and is also applicable to rust protection of the surface of rust-free steel, the preparation method is simple, construction is easy, two transforming agents are complexed in the waterborne residual rust antirust coating, so that a binding force between the waterborne residual rust antirust coating and rust is increased, the waterborne residual rust antirust coating can be directly brushed and coated on the surface of rusty steel and is applicable to multiple construction ways such as spraying, brushing and showering, the coating cost is low, and the rust protection requirements of urban road facilities, bridges, oil and gas pipelines, engineering mechanical equipment, ships and the like can be met.

The invention discloses a super battery plate which comprises a positive plate and a negative plate; the raw materials of the positive plate consist of lead powder, carbon fibers, carbon materials, short fibers and sulfuric acid solution; the raw materials of the negative plate consist of lead powder, PTFE, barium sulphate, humic acid, lignin sodium sulplate, carbon fibers, carbon materials, short fibers and dilute sulfuric acid; the super battery prepared by the super battery plate has the advantages of high specific power and specific energy as well as long charge and discharge service life of a large pulse current. Moreover, the discharge of a low-temperature large current is batter than that of a common battery.

The method relates to a method for preparing antiglare glass. The method comprises the following steps that: (1) an etching solution comprises the following compositions in portion by weight according to a formula: 10 to 15 portions of ammonium bifluoride, 20 to 30 portions of ammonium fluoride, 5 to 7.5 portions of calcium fluoride, 10 to 15 portions of barium sulphate, 5 to 7.5 portions of ammonium sulphate, 5 to 10 portions of sodium fluosilicate or 5 to 10 portions of sodium fluoborate, 5 to 10 portions of zinc chloride, 10 to 20 portions of concentrated sulphuric acid and 70 to 100 portions of water; raw materials are weighed, mixed, evenly stirred and matured for 6 to 10 hours at room temperature to prepare the etching solution; (2) the surface of a glass sample is cleaned and dried by absolute ethyl alcohol; (3) one surface of the glass sample which does not need to be etched is covered; and (4) the glass sample is put into the etching solution, marinated, taken out, washed by clean water and dried to produce a finished product of the antiglare glass. The method has simple process and easy operation; the prepared glass sample has the advantages of small particles on the surface and even distribution of the particles, high light transmissivity, good antiglare effect, etc.

An embryo-transfer catheter has an extruded shaft with a gas-filled lumen that extends helically along the catheter to provide an ultrasound marker. The catheter has a side opening close to a closed rounded patient end. The catheter could be completely transparent to x-rays or the plastics from which it is formed could incorporate an x-ray opaque filler, such as barium sulphate.

The invention discloses epoxy anticorrosive paint for underwater steel. Liquid epoxy resin DER351 is used as base materials, liquid polysulfide rubber JLY-121 is used as toughening agent, pentanediol glycidyl ether 6286 is used as diluents, aluminum tripolyphosphate, zinc phosphate and iron oxide red are used as active rustproofing pigment, micaceous iron oxide, sericite and precipitated barium sulphate are used as filler, cashew shell oil modified phenolic aldehyde and modified fatty amine are used as curing agents, silane coupling agent 1121 is used as adhesion promoter, and solvent-free bicomponent epoxy anticorrosive paint for underwater steel is prepared by the normal preparation process under the cooperation of functional auxiliaries. The epoxy anticorrosive paint for underwater steel has fine environment friendliness, can be brushed or scraped at rusted damp interfaces of underwater steel, can be quickly cured to form films, excellent in coating adhesive power, capable of removing, converting and stabilizing rusts, high in resistance to impact, abrasion and corrosion and widely applicable to corrosion resistance of various underwater steel facilities.

The invention discloses an antifouling paint for ship and marine facility, comprising the following ingredients by weight percent: 30-45wt% of scale glass, 15-25wt% of acrylic resin, 0-5wt% of rosin, 5-10wt% of asphalt, 5-15wt% of dimethylbenzene, 3-5wt% of bentonite, 0-5wt% of barium sulphate, 2-5wt% of talcum powder, 2-10wt% of ferric oxide and 5-8wt% of zinc oxide. The used scale glass can be adjusted in blending ratio thereof, or the percent content of the scale glass in the antifouling paint is adjusted, so as to control release rate of Cu+; the antifouling paint can release Cu+ chronically, slowly and stably at expected speed under the soaking of sea water; the formed paint film has obvious antifouling anti-algae capability and can prevent marine life from being adhered on the surface of ship and ocean facility, protection degree on paint film of ship and marine facility is effectively improved, and the antifouling paint is non-toxic and environmentally friendly.

The invention discloses a sodium-free refining agent for aluminum and aluminum alloy, which consists of the following ingredients in percentage by weight: 15 to 25 percent of potassium aluminium fluoride, 5 to 15 percent of calcium fluoride, 10 to 25 percent of potassium carbonate, 10 to 25 percent of potassium sulfate, 5 to 15 percent of barium sulfate, 15 to 30 percent of potassium chloride and3 to 5 percent of anhydrous aluminium chloride. The invention also discloses a production method of the sodium-free refining agent. Because the sodium-free refining agent does not contain sodium salts, compared with sodium-containing refining agents, the sodium-free refining agent effectively solves the problem of antimony modification and phosphor modification influence caused by more or less sodium salt contained in the existing refining agent and overcomes the defects of alloy casting performance influence, melt flowability reduction and sodium brittleness possibly caused by the sodium element in aluminum-magnesium system alloy with the magnesium content being higher than 2 percent. A better use effect can be obtained in the antimony modification and phosphor modification alloys and high-magnesium-aluminum alloy. The invention belongs to the qualitative improvement on the prior art.

The invention provides a rubber composite used for rubber framework oil seal and a preparation method thereof. The rubber composite contains(based on weight portions) 100 portions of fluorubber26, 5-6 portions of acid absorber magnesia, 5-6 portions of calcium hydroxide, 9-1 portions of strengthening agent black carbon, 19-20 portions of barium sulphate, 17-19 portions of iron oxide red, 2-3 portions of process additive, 1.5-2 portions of curing ingredient bisphenol AF, and 0.6-0.8 portions of accelerant BPP. The rubber composite improves the tension strength, extensibility, tear resistance, self-lubricating effect, compressive deformation resistance and thermal aging resistance of the rubber framework, makes the rubber framework good in medium resistance and prolongs the service life of the rubber framework oil seal. Meanwhile, the method is simple in process, reasonable in mixture ratio and reduces preparation cost and defective index.

The invention provides a method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil, which prepares high heat-value alkane by catalytic hydrodeoxygenation of the vegetable oil. The method comprises the following reaction steps: adding the vegetable oil, barium sulphate-loaded palladium serving as a catalyst, as well as a solvent selected from n-hexane, n-heptane, n-octane and dodecane to a reactor; supplying hydrogen; allowing reaction pressure to be between 1 and 10 MPa; stirring and heating at 230 to 320 DEG C; performing reaction for 3 to 12 hours and then stopping the reaction; allowing the catalyst and liquid products to automatically separate after the obtained product is cooled to room temperature; and obtaining the diesel components containing high heat-value alkane without centrifugation, filtration and other complicated post treatment. The method has the advantages of simple preparation process, low reaction temperature, low solvent consumption, no cracking of carbon chain parts of the oil, high combustion heat value of target products and recyclable catalyst.

The invention discloses a diatom ooze coating which is made of raw materials comprising, by weight, 15-25 parts of water, 0.6-2.6 parts of lignin or lignin derivatives, 10-15 parts of tourmalines, 0.1-0.3 part of silver oxide, 10-15 parts of titanium dioxide, 3-6 parts of precipitated barium sulphate, 5-15 parts of kaoline, 5-10 parts of sea-foam stone powder, 30-45 parts of nano diatomite, 0.5-1.5 parts of palladium, 5-10 parts of nanometer titania, 0.4-0.6 part of leveling agents, 1.5-4 parts of thickening agents, 0.6-1.2 parts of mildew preventives, 1-5 parts of active carbon nanoparticles, 0.5-3 parts of net-flavor emulsions, 8-15 parts of dispersible adhesive powder and 0-3 parts of pigment. The diatom ooze coating is excellent in breathability and moisture absorption, gas ion negatively charged can be released, human body synthesis and vitamin storage can be promoted, and human immune ability is improved; functions of sterilization, mold prevention, deodorization, air purification and fire prevention are achieved; the preparation method is simple, easy to operate and convenient for large-scale production.

The present invention relates to new material, and is one kind of carbon fiber reinforced friction resistance material suitable for producing automobile and train brake disc and its preparation process. The carbon fiber reinforced friction resistance material is produced with reinforcing fiber, base resin and friction performance regulator, the reinforcing fiber is the mixture of carbon fiber, metal fiber and inorganic mineral fiber; the base resin is water latex modified phenolic resin; and the friction performance regulator consists of at least two of barium sulfate, ionic oxide, triiron tetrachloride, iron trichloride, magnesia and silica. The preparation process includes the steps of mixing material, pre-stoving, pressing and post-treatment. The carbon fiber reinforced friction resistance material has excellent friction resistance performance and the preparation process has no pollution.

The invention relates to a preparation method of polyester resin capable of being used for an outdoor dry mixed extinction powder coating. The preparation method is characterized by comprising the following steps of: adding polybasic acid or anhydride, polyatomic alcohol, a catalyst and an antioxidant according to a mass ratio into a reaction kettle for mixing; introducing nitrogen; heating to a temperature of 100-300 DEG C until a reaction solution is completely clarified to obtain A-component polyester resin; adding polybasic acid or anhydride, polyatomic alcohol, a catalyst and an antioxidant into the reaction kettle to be mixed; introducing nitrogen; heating to a temperature of 100-300 DEG C until a reaction solution is completely clarified; and carrying out vacuum condensation polymerization on the clarified reaction solution until an acid value is 10-50 mg KOH/g and a viscosity is 30-100 P to obtain B-component polyester resin; mixing the A-component polyester resin with triglycidyl isocyanurate, barium sulfate, titanium dioxide, a flatting agent, a brightener and benzoin according to a mass ratio to obtain a powder coating I; mixing the B-component polyester resin with triglycidyl isocyanurate, barium sulfate, titanium dioxide, a flatting agent, a brightener and benzoin to obtain a powder coating II; and mixing the powder coating I with the powder coating II to obtain the powder coating with low brightness. The preparation method has the advantages of stable extinction effect of outdoor dry mixed extinction polyester, better coating property and the like.

The invention relates to low-temperature fast-curing epoxide powder paint which comprises the following components in percentage by weight: 45-65% of epoxy resin, 1-5% of polyepoxy active crosslinking agent, 8-18% of curing agent, 0.1-0.5% of curing accelerating agent, 4-30% of precipitated barium sulfate, 4-8% of mica powder, 2-5% of titanium white, 0.5-1.0% of adhesion accelerating agent and assistants. According to the invention, the epoxide powder paint uses a blended resin system of high molecular weight bisphenol A type epoxy resin and novolac epoxy resin; and after being cured by the curing agent, an obtained paint film has the advantages of the epoxy resin such as high adhesion and good alkali resistance and the characteristics of the novolac resin such as favorable water resistance, solvent resistance and acid resistance, and the paint film has favorable heat resistance. Thus, the epoxide powder paint provided by the invention can be adapted to a high-temperature severe-corrosion environment and has favorable market application prospects.

The invention discloses waterborne antirust paint and a preparation method thereof. The waterborne antirust paint is prepared from, by mass, 10-25 parts of waterborne acrylic acid modified epoxy ester, 0.6-1.2 parts of neutralizer, 20-30 parts of deionized water, 0.5-1.5 parts of dispersing agents, 0.2-0.5 part of defoaming agent, 14-18 parts of iron oxide red, 2-4 parts of mica powder, 6-10 parts of modified zinc phosphate, 10-14 parts of precipitated barium sulphate, 1-2 parts of propylene glycol, 10-15 parts of styrene-acrylic emulsion, 0.5-1.0 part of coalescing agent, 0.5-1.0 part of waterborne flush rust prevention agent, 0.5-1.5 parts of thickening agents and 0.2-0.5 part of mildew prevention agent. The waterborne antirust paint is high in film hardness, good in adhesive force and excellent in corrosion-resistant performance and mechanical performance, dryness and initial water resistance of paint films are remarkably improved due to the addition of styrene-acrylic emulsion, and the flush rust restraining performance of paint films is improved due to the addition of the waterborne flush rust prevention agent. Water serves as the diluent for the waterborne antirust paint, VOC emission in production and construction projects is greatly reduced, and the waterborne antirust paint is safe, environmentally friendly and capable of being widely used for paint coating on the aspects of steel structures, pipelines, automobile parts and the like.

A waterborne automobile coating composition is provided. The composition is prepared from, by weight, 20-60 parts of a waterborne polyurethane dispersoid, 1.0-3.5 parts of a dispersing agent, 5-15 parts of titanium dioxide, 5-15 parts of precipitated barium sulfate, 0.1-0.5 part of carbon black, 0.5-1.5 parts of a defoamer, 3-8 parts of a waterborne hydroxy acrylic acid dispersoid, 0.1-0.5 part of an organic amine, 6-12 parts of amino resin, 0.1-1 part of a substrate wetting agent, 1-3 parts of an explosion-proof auxiliary agent, 1-5 parts of a cosolvent, 20-40 parts of deionized water and 0.1-1 part of a thickening agent. The waterborne polyurethane dispersoid is a compound of a polycarbonate-type waterborne polyurethane dispersoid having hydroxy groups and a polyester-type waterborne polyurethane dispersoid preferably. The coating composition has excellent resistance to rock crash, and can meet requirements on an automobile coating process including three times of coating and one time of baking, namely a 3C1B process, in the field of environment protection.

The invention relates to a flame retardant PTT polyester fiber and production method thereof, wherein the polyester comprises a phosphor based copolymerization flame retardant accounting for 1.2-8.5% of the total weight of the polyester and the phosphor based copolymerization flame retardant comprises a double-reaction functional group and the phosphor element quality content in polyester is 1400-12000ppm and the PTT polyester also comprises an inorganic nano-material accounting for 0.1%-5.0% of the total weight of the polyester and the inorganic nano-material is selected from one kind or several kinds of silicon dioxide, calcium carbonate, magnesium carbonate and barium sulphate. The production method is the improvement of the conventional method, specifically before drying polyester chip, the polyester chip is precrystallized at 110-125 DEG C for 1.5-3 hour and the drying temperature is 130-145 DEG C and the drying time is 3.5-5 hours. The polyester fiber has features of good and permanent flare retardant resistance, high breakdown strength, good fiber forming property, good thermal stability and good thermal oxidation stability performance.

The invention discloses a polypropylene composite material with high strength and toughness and a preparation method thereof. The composite material comprises the following components in parts by weight: 28-58.5 parts of polypropylene, 10-40 parts of polycaprolactam, 14 parts of barium sulphate, 7 parts of glass fiber, 9 parts of compatilizer, 1 part of lubricant and 0.5-1 part of antioxidant; and the preparation method is as follow: drying the barium sulphate, the lubricant and the compatilizer, stirring at the temperature of 40-100 DEG C, evenly mixing the processed barium sulphate, polypropylene and polycaprolactam, performing melt blending by a double-screw extruder, introducing the glass fiber in the middle section of a screw, extruding, drawing and pelleting. The polypropylene has higher flexural modulus, tensile strength and impact strength which are endowed from the synergic toughness-strength enhancement effect of the inorganic rigid particle barium sulphate and the organic rigid resin polycaprolactam and the strength enhancement effect of the glass fiber, thus the composite material can be used as a plastic structure part.

The invention relates to a low temperature curing powder coating and a preparation method thereof. The powder coating comprises the following components by weight percent: 28-30% of epoxy resin, 28-30% of low temperature curing polyester resin, 0.1-1% of low temperature curing catalyst, 0.1-0.4% of benzoin, 0.7-1.4% of imported flatting agent, 0.4-1% of hydrogenated castor oil, 5-10% of pigment, and 25-40% of precipitated barium sulphate. In the formula of the powder coating, the low temperature curing polyester resin and the low temperature curing catalyst are adopted, the film of the power coating product can be cured at lower curing temperature, and each mechanical property of the film can be guaranteed to be excellent, therefore, the powder coating is suitable for large-scale popularization and application.

The invention discloses a process and a device for recovering sodium sulphide wastewater in barium sulphate production, belonging to the technical field of wastewater recovery. The process comprises the following steps performed by the corresponding devices: adding sulphuric acid to neutralize dilute sodium sulphide waste solution; absorbing hydrogen sulphide by a sodium sulphide spray tower; adding hydrogen peroxide in the sodium sulphate solution, so as to oxidize hydrogen sulphide which is dissolved in sodium sulphate solution into sulphur; filtering the sodium sulphate solution; and finally charging the sodium sulphate dilute solution in a disc-tube type reverse osmosis membrane system or a high-pressure flat-sheet membrane system, then concentrating, reusing the concentrate in barium sulphate production, and directly draining clear solution, so as to achieve the effect of turning waste into wealth.

The invention discloses a waterproof high-hardness waterborne polyurethane coating which is characterized by comprising the following components in parts by weight: 65-80 parts of modified waterborne polyurethane, 20-35 parts of waterborne polyaniline, 3-6 parts of polyisocyanate, 5-20 parts of nano-silica, 3-9 parts of isopropanol, 5-10 parts of ethylene glycol propyl ether, 0.5-1.6 parts of dipentaerythritol, 15-20 parts of polydimethylsiloxane, 3-8 parts of gamma-isocyanate propyl triethoxy silane, 3-8 parts of polytetrafluoroethylene, 0.5-3 parts of modified carbon nanotubes, 5-20 parts of precipitated barium sulphate, 2-6 parts of amino resin, 3-8 parts of zinc powder and 30-60 parts of water. The waterproof high-hardness waterborne polyurethane coating is good in water resistance, high in harness and long in service life.

The present invention provides a PET release film, wherein the thin film layer comprises, by weight, 100 parts of PET, 8-12 parts of PP, 15-20 parts of barium sulfate, 15-20 parts of titanium dioxide, 3-5 parts of 3-aminopropyltriethoxysilane, 10-16 parts of butyl acrylate, 15-20 parts of methyl methacrylate, 1-2 parts of octadecyl methylacrylate, 10-20 parts of polyethylene glycol, 10-20 parts of ethanol, 20-30 parts of deionized water, 5-10 parts of natural latex, 0.3-0.5 part of a defoamer, and 0.3-0.5 part of a thickener. According to the release film, the thin film layer is added with the barium sulfate and the titanium dioxide inorganic filler, such that the prepared release film has characteristics of excellent adhesion (peel strength), excellent mechanical property, good light-reflecting property, and wide application range.

The invention relates to a high-temperature-resistant powder coating with good gloss-retention performance. The high-temperature-resistant powder coating is characterized by comprising the following constituents in mass percentage: 58-62 parts of polyester resin, 4-5 parts of TGIC (Triglycidyl Isocyanurate) curing agent, 0.2-0.5 part of wax powder, 0.3-1 part of organic soil, 1.5-2.5 parts of ammonium polyphosphate temperature resistant auxiliary, 0.3-0.6 part of phosphite ester antioxidant, 0.1-0.3 part of a sand ripple agent, 0.6-1.2 parts of carbon black, 20-30 parts of precipitated barium sulphate, and 2-5 parts of asbestos powder.

The invention discloses a positive and negative plate additive of a lead-acid accumulator and a preparation method thereof. The positive and negative plate additive of the lead-acid accumulator comprises the following raw materials in part by weight: 120 to 130 parts of deionized water, , 4 to 10 parts of gas-phase nanometer silicon dioxide and 10 to 25 parts of other additives, wherein when a positive plate is prepared, other additives mainly comprise high-purity graphite, sodium silicate and polytetrafluoroethylene; and when a negative plate is prepared, other additives mainly comprise sodium ligninsulphur, high-purity humic acid, barium sulphate, acetylene carbon black and barium stearate. The additive of the invention is emulsion, a high-speed shearing way is adopted in the preparation method, and the additive has high dispersibility, and is more uniformly mixed with each component in the additive after being mixed and stirred with lead powder, so that the additive can not only improve and enhance the technical performance of the accumulator, but also prolong the service life of the accumulator.

The invention relates to a multilayer, white, biaxially oriented polyester film, which has a base layer B and at least one outer layer (A), where

• a) the base layer (B) includes, as sole whitening pigment, a concentration of from 5 to 25% by weight of barium sulfate, and
• b) the outer layer (A) includes, as sole whitening pigment, a concentration of from 5 to 25% by weight of barium sulfate, and also includes from 0.01 to 4% by weight of antiblocking agent whose median diameter (d₅₀ value) is from 2 to 8 μm.