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Metal powder for 3D printer and preparing method thereof
ActiveCN103785860AHigh sphericityUniform compositionAdditive manufacturing apparatusTransportation and packagingDispersityMetal particle
Owner:JIANGSU BOQIAN NEW MATERIALS CO LTD
Water-based primer-topcoat braking paint and preparation method thereof
The invention relates to a water-based primer-topcoat braking paint and a preparation method thereof. The braking paint comprises the following materials by weight percentage: 30-40 of water-based acrylic resin, 2-10 of amino resin, 1-3 of neutralizing agent, 2-5 of compound rustproofing pigment, 1-3 of tinting pigment, 10-20 of filling agent, 0.1-0.5 of defoaming agent, 0.1-0.5 of flatting agent and 25-40 of deionized water, wherein the water-based acrylic resin is a free radical polymerization resultant which comprises the following materials by weight percentage: 10-30 of monomer containing hydroxy acrylic acid, 5-20 of monomer containing carboxyl acrylic acid, 2-8 of internal crosslinking monomer, 20-40 of other acrylic acid monomer, 15-30 of phenyl ethylene monomer, 1-5 of evocating agent and 40-50 of alcohol ether latent solvent. When the paint is prepared, the dispersion and the abrading condition of the pigments and the filling agents are reasonably controlled to ensure that each component of the paint fully plays the respective function. The paint ensures the corrosion prevention effect and the decoration of a coating and realizes the combination of a primer and a topcoat.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +1
Composite combined aluminum oxide-silicon carbide-(carbon) system amorphous refractory material
The invention relates to a complex combination alumina-carborundum-(carbon) series amorphous fire proof material, and the formula comprises: 36 to 32 percent of 8-3mm corundum or bauxite, 18 to 26 percent of 3-1mm corundum or bauxite, 10 to 22 percent of 1-0.0088mm corundum or bauxite, 0 to 15 percent of 1-0.088mm carborundum, 0 to 3 percent of 1-0.0088 spherical asphalt, 0 to 20 percent of d90 less than 0.088mm corundum or bauxite, 0 to 20 percent of d90 less than 0.088 carborundum, 0 to 3 percent of d90 less than 0.088mm high-carbon materials, 0 to 5 percent of alpha alumina micro powder, 1 to 8 percent of alumina hydrate, 1 to 6 percent of silicon ash, 0 to 2 percent of calcium aluminate cement, 0.05 to 0.4 percent of plus super-plasticizer (polycarboxylic acids+sulfonated naphthalene formaldehyde polymer+sulfonated melamine polymer), 1 to 6 percent of plus polypropylene acid series latex and 1 to 6 percent of plus water. Compared with low-cement aluminum carborundum carbon material, the material has good anti-corrosion performance. Therefore, the service life of a kilneye of a cement kiln and a main groove slag line of a blast furnace can be prolonged when a product is combined by the complex combination alumina-carborundum-(carbon) series amorphous fire proof material instead of the cement.
Owner:RUITAI MATERIALS TECHNOLOGY CO LTD
High-temperature resistant flame-retardant environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof
Owner:广东祺龙科技有限公司
Coking inhibitor and preparation method and application thereof
InactiveCN101037618AImprove performanceImprove hydrogen supply capacityTreatment apparatus corrosion/fouling inhibitionHydrocarbon mixturesBoiling point
The invention discloses a agglomerating inhibiting agent, preparing method and application thereof. The agglomerating inhibiting agent is selected from one or more hydrogenizating upgrading products of hydrocarbon mixture of coal oil, ethylene tar oil, catalytic crackingre cycle stock, catalytic crackingre slurry oil, catalytic crackingre heavy oil, catalytic crackingre extract oil and coking hydrowax, which contain 65-100 wt% of cyclane and arene, boilingpoint is 150 DEG C to 500 DEG C. The agglomerating inhibiting agent is used for preventing, slowing and removing agglomerating of apparatus and pipilines in process of petroleum refining and petrochemical processing.
Owner:SINOPEC LUOYANG PETROCHEM ENG CORP
Modified lignin sulfosalt dispersant of water coal slurry
InactiveCN1404912AVersatileImprove performanceTransportation and packagingMixingLiquid productSulfonate
The preparation method of dispersing agent for water-coal slurry by using lignin sulfonate-by-product obtained by pulping for making paper includes the following steps: chemical modification, adding alkali in lignin sulfonate solution at 50-85 deg.c to regulate pH value of 8-11.5, adding catalyst, oxidant, anchor group and solvation chain and making them produce reaction for 1-10 hr., and compounding modification, adding modifying agent, stirring for 10-60 min. and cooling so as to obtain liquid product of the dispersing agent. Said invention can modify the lignin sulfonate into the additive with double action of dispersion and stabilization for water-coal slurry.
Owner:SOUTH CHINA UNIV OF TECH
Polyaniline anti-corrosion coating for underwater or wet surfaces and preparation method thereof
ActiveCN103865361ANo pollution in the processNon-toxic and pollution-freeAnti-corrosive paintsEpoxy resin coatingsDefoamerChemistry
The invention discloses a polyaniline anti-corrosion coating for underwater or wet surfaces. The anti-corrosion coating comprises a component A and a component B in parts by weight. The component A comprises 30-60 parts of epoxy, 5-20 parts of resin modifiers, 3-10 parts of polyaniline, 0.5-5 parts of corrosion inhibitors, 1-2 parts of additives, 20-30 parts of pigment filler; The component B comprises 14-30 parts of curing agent. The preparation method comprises the following steps of adding wetting agent and dispersing agent into polyaniline to allow the surface of polyaniline to be sufficiently moistened; sequentially adding epoxy, resin modifiers, pigment filler and corrosion inhibitors, stirring and then adding polyaniline which is subjected to surface treatment, stirring, evenly dispersing, adding leveling agent and defoamers; grinding to obtain the component A having a particle size of less than 35mum; the curing agent is taken as the component B. The polyaniline anti-corrosion coating prepared by the invention is non-toxic and has no pollution on the human body and is environmentally friendly and has not only good underwater adhesion, lasting corrosion resistance, and smooth surface. The coating is flexible and elastic.
Owner:山东旭锐新材股份有限公司
Preparation method for colorless transparent high-temperature-resistant polyimide nanometer composite film
The invention discloses a preparation method for a colorless transparent high-temperature-resistant polyimide nanometer composite film, which belongs to the field of polymeric materials. The preparation method comprises the following steps: reacting 4,4-biscyclohexyl diformyl chloride (BCCL) with hexafluorobenzidine (TFDB) so as to prepare semi-aromatic fluorodiamine precursor; then subjecting the precursor, TFDB, 4,4'-(hexafluoroisopropenyl)diphthalic acid anhydride (6FDA) and hydrogenated 3,3,4,4-biphenyl dianhydride (HBPDA) to copolymerization so as to prepare polyamide acid precursor; grafting the polyamide acid precursor to a silane coupling agent in situ and carrying out aging and hydrolysis in a mixed solution of tetramethoxysilane (TMOS) and tetraethoxysilane (TEOS) so as to obtain a polyamide acid / silica mixed solution; and subjecting the mixed solution to tape casting and drying so as to obtain a polyimide / SiO2 composite film.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS
Antirust and preparation method and application thereof
ActiveCN107163844AAnti-rust for a long timeImprove anti-rust effectWax coatingsAnti-corrosive paintsSolventChemistry
The invention discloses an antirust and a preparation method and an application thereof. The antirust comprises corrosion inhibitor, film-forming agent, dispersant, synergist with active groups on the surface, and solvent; the weight ratio of the corrosion inhibitor, the film-forming agent, the dispersant and the synergist with the active groups on the surface is 1:0.005 to 0.5:0.002 to 0.4:0.001 to 0.3, and the weight ratio of the solvent to the corrosion inhibitor is 100:0.01 to 50. Modifier is added into the antirust disclosed by the invention to carry out surface modification treatment on the synergist, so that the surface of the synergist is grafted with the active functional groups, such as -OH and -NH3, consequently, the binding force between the antirust and a base material is enhanced, the antirust time is prolonged, and thereby the antirust effect is enhanced. The antirust disclosed by the invention is basically applicable to the surfaces of various iron-based, aluminium-based and copper-based materials, moreover, brushed, sprayed or immersed base materials have excellent corrosion resistance, durability and high adhesive force; the process of the preparation method is mature, the production cost is low, the production process is green and harmless, and therefore the preparation method is suitable for popularization and application on a large scale.
Owner:上海特德拉化工有限公司
Heavy metal contaminated soil restorative agent as well as preparation method thereof and application thereof
InactiveCN105754611AEasy to prepareGood governanceContaminated soil reclamationOrganic fertilisersContaminated soilsBiomass
The invention provides a heavy metal contaminated soil restorative agent. The restorative agent is prepared from the following components in weight ratio: 20-30 percent of biomass charcoal, 30-50 percent of quick lime, 10-20 percent of molecular sieve, 10-20 percent of sodium bentonite, 1-10 percent of polyepoxysuccinic acid and 1-10 percent of sodium lignin sulfonate. A preparation method for the heavy metal contaminated soil restorative agent comprises the following steps: firstly, mixing the biomass charcoal, quick lime, molecular sieve, sodium lignin sulfonate and sodium bentonite in mass ratio to obtain a mixture; and then, adding the polyepoxysuccinic acid into the mixture in mass ratio to stir and uniformly mix, thereby obtaining the prepared soil restorative agent. The prepared soil restorative agent has good effect in restoring the cadmium, lead and zinc compound contaminated soil.
Owner:CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
Multifunctional high-strength composite fabric coating agent, coating, and preparation method and application of multifunctional high-strength composite fabric coating agent
InactiveCN107254248AHigh strengthImprove scratch resistanceAntifouling/underwater paintsBiochemical fibre treatmentMoisture penetrationFilm-forming agent
Owner:JIANGNAN UNIV
Secure communication method based on multichannel signal fragmentization transmission technology
The invention discloses a secure communication method based on multichannel signal fragmentization transmission technology. The secure communication method comprises the following steps: dispersing communication data into small fragments in an information transmitting terminal, and then transmitting the small fragments by multiple information channels according to a certain rule; and receiving fragmentization data transmitted by the multiple channels in an information receiving terminal, and integrating the fragmentization data according to the fragmentization rule when the information is sent to obtain complete data transmitted by the transmitting terminal. The dispersion and integration rules of the fragments are determined by keys in the transmission process. By adoption of the secure communication method provided by the invention, on one hand, the difficulty of a third party to intercept complete information from the communication data can be greatly increased, so that the third party is difficult to crack signals via ultrahigh performance calculation; and on the other hand, even if enough information is intercepted by the multiple channels, complete effective data is difficult to be extracted from the encrypted fragmentization information, and it is difficult to recombine and recover the original data, therefore the security is improved.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Suede-making additive for low-reflectivity monocrystalline silicon
InactiveCN102586887AIncrease densityReduce surface reflectivityPolycrystalline material growthAfter-treatment detailsAlbedoCrystalline silicon
The invention relates to the technical field of crystalline silicon solar cell production, in particular to a suede-making additive for low-reflectivity monocrystalline silicon. Formula components comprise sodium tripolyphosphate, butyl naphthalenesulfoni and deionized water. When the additive is used for suede-making of the monocrystalline silicon, average value of surface albedo of a monocrystalline silicon sheet in a wavelength range of 400 nm to 1100 nm can be reduced to below 8% from current 10%, and an even, small and dense suede pyramid can be obtained. The suede-making additive can improve photoelectric conversion efficiency of a crystalline silicon solar cell, is favorable for stabilizing technology of the crystalline silicon solar cell, and has good practical value.
Owner:苏州先拓光伏科技有限公司
Complex water-retaining synergistic chemical fertilizer
The invention discloses a complex water-retaining synergistic chemical fertilizer which is composed of the following constituents by weight proportion: 88%-92% of nitrogenous fertilizer, 1%-2% of laurinol oxethyl ammonium sulfate, 1%-2% of water-retaining agent, 2%-3% of complex biological bacteria, 1%-2% of humic acid, 1%-2% of zeolite powder and 1%-2% of bentonite. The complex water-retaining synergistic chemical fertilizer provided by the invention can be used for effectively improving the soil aggregate structure, eliminating the soil hardening and enhancing the soil permeability, thereby enhancing the fertilizer utilization rate, increasing the soil water-retaining ability, improving the soil structure, promoting the crop growth and improving the crop quality.
Owner:焦楠
Acetylation lignin amphiphilic polymer nanometer colloid sphere and preparation method thereof
The invention discloses an acetylation lignin amphiphilic polymer nanometer colloid sphere and a preparation method thereof. The preparation method comprises the following steps of: dissolving 1-5 parts by weight of alkali lignin into 200-500 parts by weight of mixed solutions of glacial acetic acid and acetyl reagents, and heating in water bath at 40-60 DEG C for 2-4 hours; and rotationally evaporating to remove the glacial acetic acid, then adding 250-900 parts by weight of organic solvents to dissolve and dilute acetylation lignin, and adding 100-450 parts by weight of water to change a microfacies environment so as to obtain the acetylation lignin amphiphilic polymer nanometer colloid sphere. The method disclosed by the invention has the advantages of simplicity, rich and low-cost raw material source, reutilization of the glacial acetic acid used in production in large quantities and low production cost; and compared with a micron-scale random sodium lignosulfonate / chitosan micelle and a lignin urea-formaldehyde resin micelle, the prepared acetylation lignin amphiphilic polymer nanometer colloid sphere is a uniform nanoscale hollow spherical micelle, achieves the drug loading capacity of pesticide abamectin higher than 50% and is a green nanometer material.
Owner:SOUTH CHINA UNIV OF TECH
Screening agent for improving negative effect of clay on cement concrete system of polycarboxylic acid-doped water reducer and using method thereof
The invention discloses a screening agent for improving negative effect of clay on a cement concrete system of a polycarboxylic acid-doped water reducer and a using method thereof, wherein the screening agent is mixed from the following materials in parts by weight: 35-55 parts of sodium metasilicate pentahydrate, 30-50 parts of sodium tripolyphosphate, 7-15 parts of polyethylene glycol, 3-8 parts of sodium humate and 5-10 parts of sodium polyacrylate. When the screening agent is used for production of cement paste, cement mortar and concrete, the screening agent of the corresponding mass proportion only needs to be added, so that effect of improving the negative effect of clay on the cement concrete system of the polycarboxylic acid-doping water reducer can be achieved, and working performances such as liquidity, and the like, of the cement concrete system of clay can be effectively improved; and meanwhile, mechanical performances such as strength, and the like, of the system cannot be lowered.
Owner:CHONGQING UNIV +1
Children coating and preparation method thereof
The invention provides a children coating and a preparation method of the children coating. The children coating provided by the invention comprises the following raw materials: wood fibers, a purified emulsion, kieselguhr, an anion additive, titanium dioxide, triple superphosphate powder, a dispersing agent, a wetting agent, a defoaming agent, a thickening agent, a preservative, a mildew preventive and tap water and the like. The wood fibers are added into the environmentally-friendly children coating by the invention so as to change the structure and the texture of a surface of a paint film, thereby feeling soft and smooth; and in addition, the porosity of the paint film is improved by the wood fibers in the paint film, the breathable performance is good, the quantity of heat and the transmission capacity of voice are reduced, and a good humidifying function can be created by the gaps of the paint film.
Owner:ZHEJIANG ZHIQIANG PAINT
Attapulgite-based soil heavy metal repairing agent
InactiveCN105295931AStrong water absorptionStrong Colloidal PropertiesOrganic fertilisersSoil conditioning compositionsPorositySoil heavy metals
The invention belongs to the technical field of environment pollution treatment, and more specifically relates to a heavy metal-polluted soil repairing agent prepared by attapulgite. The attapulgite-based soil heavy metal repairing agent is obtained by steps of raw ore fragmentation, acidifying treatment, airing screening, roasting and soil heavy metal restoration. According to the attapulgite-based soil heavy metal repairing agent through acidifying and heat modification, attapulgite clay has characteristics of large specific surface area and high porosity amount due to sulfuric acid acidifying treatment of the attapulgite clay, activity and adsorptivity are increased, proportion of soluble heavy metals in the soil can be effectively reduced, soil heavy metal passivation effect can be reached, and soil heavy metal pollution can be remediated.
Owner:LANZHOU KUNLUN ENVIRONMENTAL PROTECTION TECH
Method for preparing aluminum oxynitride transparent ceramic through gel casting
The invention relates to a method for preparing an aluminum oxynitride transparent ceramic through gel casting. The method comprises the following steps: (1) ball-milling and mixing aluminum oxynitride powder, a dispersing agent and absolute ethyl alcohol, adding a hydration-resisting agent, performing hydration-resisting treatment, drying and sieving to obtain aluminum oxynitride powder processed by the hydration-resisting treatment, wherein the mass ratio of the aluminum oxynitride powder, the dispersing agent and the hydration-resisting agent is 100:(0.1-5):(0.1-5); (2) mixing the aluminum oxynitride powder processed by the hydration-resisting treatment, a water-soluble isobutene polymer and water to obtain a water-base slurry, wherein the mass ratio of the aluminum oxynitride powder processed by the hydration-resisting treatment, the water-soluble isobutene polymer and the water is (10-80):(0.1-5):100; (3) performing vacuum degassing on the base-base slurry, injecting the degassed base-base slurry into a mold, performing self-gel curing to obtain a biscuit, and drying the biscuit; (4) presintering the dried biscuit, and performing pressure-less sintering to obtain the aluminum oxynitride transparent ceramic.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Ecological soil conditioner capable of improving acid soil and preparation method
InactiveCN105950166AReduce acidityRaise the pHAgriculture tools and machinesOther chemical processesChemical structureEcological environment
The invention belongs to the technical field of soil improvement and particularly relates to an ecological soil conditioner capable of improving acid soil and a preparation method. The ecological soil conditioner comprises raw materials in parts by weight as follows: 30-60 parts of carbonized distillers' grains, 10-20 parts of industrial and agricultural waste, 10-15 parts of sargassum, 10-15 parts of water hyacinth, 5-10 parts of plant ash, 5-15 parts of nano-modified clay, 5-10 parts of sodium alginate, 1-10 parts of tamarind polysaccharide gum, 1-5 parts of chelated secondary elements and trace elements and 0.1-3 parts of graphene oxide. The ecological soil conditioner can regulate the pH value of the soil, promote granular structure formation of the soil, improve the physical and chemical structures of the acid soil, increase organic matter content of the soil, improve the moisture and fertilizer retention capacity, improve physical characteristics of the soil, creates a good ecological environment for plant growth, is excellent, meets the organic and pollution-free agricultural development trend and has larger popularization and application value.
Owner:SICHUAN SHILIWANG AGRI SCI & TECH DEV CO LTD
Application of plant source surface active agent
InactiveCN104874329AHas an activation effectIncrease gasification rateNon-ionic surface-active compoundsOther chemical processesEmulsionResource utilization
The invention relates to a total saponnis extraction technology of a honeylocust extract and an application field thereof. The total saponnis extraction technology is characterized in that the total saponnis is a plant source nonionic type surface active agent, and has the interfacial tension reduction property, emulsion activity, wetting property, temperature-resistant and salt-tolerant property, dispersant solubilizing and the like, so as to provide the applicability in the fields of recovery, storage and transportation of crude oil; the green surface active agent from the plant, namely the honeylocust, is applied to the bulk industrial purpose, so the resource utilization rate of the honeylocust is improved, the recovery rate of crude oil is improved, the storage and transportation cost of crude oil is reduced, and the pollution to the environment is reduced.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
High-strength anti-corrosion coating as well as preparation method and application thereof
ActiveCN107141863AImprove bindingHigh strengthAnti-corrosive paintsPolyurea/polyurethane coatingsFilm-forming agentSurface modification
The invention discloses a high-strength anti-corrosion coating as well as a preparation method and application thereof. The high-strength anti-corrosion coating contains an anti-corrosion processing agent, a reinforcing agent, a difunctional dispersing agent, a flatting agent, a film forming agent and a solvent, wherein the surface of the reinforcing agent is provided with active groups, and the mass ratio of the anti-corrosion processing agent to the reinforcing agent to the difunctional dispersing agent to the flatting agent to the film forming agent is 1 to (0.005-0.5) to (0.002-0.6) to (0.002-0.4) to (0.002-0.3), and the mass ratio of the solvent to the anti-corrosion processing agent is 100 to (0.01-50). The reinforcing agent is subjected to surface modification and is provided with active functional groups such as -OH and -NH3, so that the bonding force of a coating layer and a base material is enhanced, and the strength and scraping resistance of the coating layer can be substantially enhanced; the brush-coated, sprayed or dipped base material has excellent corrosion resistance, knock resistance and durability and high hardness and adhesive force; and a process of the preparation method is mature, the production cost is low, and the production process is environmentally friendly and pollution-free, so that the preparation method is suitable for large-scale popularization and application.
Owner:嘉兴浩然科技有限责任公司
Scale inhibitor for salt manufacture and application thereof
ActiveCN102351324AHigh scale inhibition rateHigh temperature resistanceScale removal and water softeningMonosodium glutamatePolyaspartic acid
The invention discloses a scale inhibitor for salt manufacture, which is prepared from the following components in percentage by weight: 25 to 30 percent of crylic acid-acrylate-sodium allylsulfonate multiple copolymer, 40 to 50 percent of polyaspartic acid, 10 to 15 percent of sodium gluconate, and 5 to 10 percent of water. The scale inhibitor for salt manufacture, disclosed by the invention, issuitable for the salt and Glauber salt co-production industry, as well as sugar manufacture and monosodium glutamate manufacture industries, can prevent a heat exchange tube in a pre-heater and a heat chamber from scaling, and guarantees the scale inhibitor with heat transfer effect for salt manufacture.
Owner:CHANGZHOU ZHONGNAN CHEM
Preparation method of black iron oxide particles with corrosion inhibition performance
InactiveCN103289442AGood corrosion inhibition effectLiquidPigment treatment with macromolecular organic compoundsPigment treatment with non-polymer organic compoundsViscous liquidEthyl(hydroxyethyl)cellulose
The invention discloses a preparation method of black iron oxide particles with corrosion inhibition performance. The method comprises the following steps of: dissolving urotropin, ethyl hydroxy ethylcellulose and lauryl sodium sulfate in deionized water according to the definite weight ratio, thereby obtaining a viscous liquid; putting black iron oxide into a granulating machine for granulating while evenly spraying the viscous liquid onto the black iron oxide powder at the same time, thereby forming small black iron oxide particles; and drying and screening the small black iron oxide particles, thereby obtaining a finished product. According to the method, the black iron oxide is modified by the urotropin and other components, so that the corrosion inhibition performance of the black iron oxide is enhanced; and the liquidity and the dispersibility of a black iron oxide pigment are realized. The produced black iron oxide has the characteristics of being excellent in temperature resistance, good in acid and alkali resistance, strong in light absorption, high in tinting strength, good in compatibility and dispersibility and the like, thereby being wide in market prospect.
Owner:TONGLING RELY TECH
Carbon-coated aluminum foil for lithium ion batteries
ActiveCN109935837AImprove thermal performanceImprove stabilityElectrode carriers/collectorsSecondary cellsSolventSodium carboxymethylcellulose
The invention relates to the technical field of current collectors for lithium ion batteries, and discloses a carbon-coated aluminum foil for lithium ion batteries. The coating products of the conductive coating of the carbon-coated aluminum foil include conductive agent, binder and solvent. The conductive agent includes graphene and at least one of carbon black, carbon nanotubes and layered conductive graphite. The binder includes at least one of polyacrylate, polyurethane, epoxy resin, polyacrylonitrile, styrene-butadiene rubber and sodium carboxymethyl cellulose. The solvent includes at least one of water and anhydrous ethanol. The carbon black and the graphene are modified by polyvinylpyrrolidone grafting. Graphene is used as a conductive agent, which can make the conductive coating have high thermal conductivity and improve the heat dissipation performance of batteries. Polyvinylpyrrolidone is grafted onto the surface of the conductive agent, which reduces the surface free energyof the conductive agent, increases the steric hindrance and makes the grafted and modified conductive agent have high dispersion stability.
Owner:WANXIANG 123 CO LTD
Instant psidiumguajava tea and preparation process thereof
The invention provides a highly clear and instant psidiumguajava tea and a preparation process, wherein the tea is produced by mainly adopting fresh or dried young fruit psidiumguajava as a raw material, and has characteristics of convenient production and taking, high safety and no toxic-side effect. According to the present invention, the fresh or dried young fruit psidiumguajava is mainly adopted as the raw material, and cleaning, grinding, ultrasonic enhanced solvent extraction, concentration, purity removing, membrane separation and enrichment, paste forming, spray drying and granulation are performed to obtain the instant psidiumguajava tea; compared with the previous psidiumguajava tea product, the product of the present invention and the preparation process thereof have the following characteristics that: the psidiumguajava fruit, especially the young fruit discarded in the production process is adopted as the raw material to change waste into treasure and obtain the instant psidiumguajava tea product; the psidiumguajava young fruit water extract has a good clinical blood sugar lowering effect, and the preparation process has characteristics of high product yield, low preparation cost, more flavor substance maintaining, and the like; and the highly clear and instant psidiumguajava tea has characteristics of convenient taking, high nutrition and high active ingredient content.
Owner:ZHONGSHAN CUISAN FOOD CO LTD
Preparation method for cassava starch modified by combining three kinds of modification processes
ActiveCN104031295AImprove reaction efficiencyImprove the uniformity of the reactionFibre treatmentPaper coatingWater contentChemistry
A disclosed preparation method for cassava starch modified by combining three kinds of modification processes is characterized by comprising: taking starch as a raw material, employing a wet-process crosslinking-oxidation-esterification chemical modification technological route, specifically, performing a crosslinking reaction and an oxidation reaction on an active starch slurry at the same time, then adding a pretreated composite esterification reagent to perform esterification reaction, and adjusting the pH value of the starch slurry to 5.0-6.5, so as to finish combined modification of cassava starch, filtering to obtain wet starch with the water content of 35% or less, then adding polyethylene glycol, mixing uniformly, and performing drying, cooling, crushing and sieving, so as to obtain the cassava starch modified by combining three kinds of modification processes. Only one time of post-processing process comprising washing, centrifugation, drying and the like is performed, the technological process is continuous and automatic, energy and reaction time are saved; and the product is low in gelatinization temperature, good in formability, improved in permeability, caking property, film forming ability and anti-ageing property, and is suitable for being used as a coating adhesive and a surface sizing agent in papermaking industry, a sizing agent in weaving industry, an industrial binder and the like.
Owner:广西农垦明阳生化有限公司
Gunning refractory for heating furnace
The invention provides a gunning refractory for a heating furnace, comprising 45-85 wt% of high alumina bauxite, 5-20 wt% of fused magnesia, 2-10 wt% of aluminum-magnesium spinel, 1-5 wt% of kyanite, 5-35 wt% of binding agent, 0.05-0.5 wt% of sodium tripolyphosphate, 0.01-0.2 wt% of sodium polyacrylate and 0.2-3.0 wt% of aluminum powder. When the heating furnace is repaired by using the gunning refractory provided by the invention, hot-state online repairing can be realized with large speed and high efficiency by using spray-repairing equipment like a gunning machine and a spray gun. Shown bythe experiment, the gunning refractory obtains better adhesion and higher binding strength with the repaired working face after a 20-cm thick collapsed portion on the top of the heating furnace is repaired by using the gunning refractory provided by the invention; and no sparkling or spalling damage appears while the repaired gunning refractory is used for eight months.
Owner:SHANDONG IRON & STEEL CO LTD
Direct current power distribution network line single-pole ground fault locating method
ActiveCN106841921ARealize fault locationSimple calculationFault location by conductor typesElectrical resistance and conductanceHigh resistance
The invention discloses a direct current power distribution network line single-pole ground fault locating method. The method comprises the steps that 1, a fault current differential initial value expression is obtained according to a transient characteristic equation of a fault current; 2, a fault current differential initial value is replaced through an interpolation algorithm; 3, a fault location value expression containing the fault current differential initial value is obtained; 4, the fault location value expression is combined with a loop current equation, and a fault-based location equation is obtained; 5, voltage and current value information before and after a single-pole ground fault happens is obtained, the fault current differential initial value obtained in the step 2 and the fault location equation obtained in the step 4 are combined, and a fault location value is obtained. According to the direct current power distribution network line single-pole ground fault locating method, calculation is easy, the application range is wide, the method is free of influence of factors such as transition resistance, the calculation result can be used for offline maintenance, automatic operation can be achieved, high resistance to transition resistance is achieved, and when the transition resistance is increased, the high location precision is still achieved.
Owner:SOUTHEAST UNIV
Multi-metal anti-rusting master batch as well as preparation method and application thereof
The invention discloses multi-metal anti-rusting master batch as well as a preparation method and application thereof. The anti-rusting master batch comprises the following components in percentage by mass: 30-50% of a compounded anti-rusting agent, 40-60% of carrier plastic and 10-20% of an additive, wherein the compounded anti-rusting agent is prepared by mixing sodium benzoate, sebacic acid, triethanolamine boric acid ester and benzotriazole in a mass ratio of (1-1.3):(1.1-1.5):(2.2-3.2):(0.8-1.2); the additive is prepared by mixing stearic acid amino, coarse whiting, sucrose fatty acid ester and an antioxidant 1076 in a mass ratio of (0.9-1.3):(4.8-6.5):(2.5-3.3):(0.8-1.1). When being used as an additive, the triethanolamine boric acid ester has both a dispersion function and an anti-rusting function, the compounded anti-rusting agent has certain polarity and can penetrate the carrier plastic to be volatilized to the surface of packaged metal to form a protecting film, so that corrosion of external corrosive substances is prevented, and the phenomenon that frost separation is generated as the compounded anti-rusting agent is not compatible with the carrier plastic because of the too high polarity is avoided. The multi-metal anti-rusting master batch is free of harmful component, is environment-friendly and safe to use, and has the anti-rusting function on multiple metals.
Owner:青岛鑫盈鑫包装材料有限公司 +1
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