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Method for catalytic preparation of 5-hydroxymethyl furfural from carbohydrates
InactiveCN102101851ALow costGood choiceOrganic chemistryMetal/metal-oxides/metal-hydroxide catalystsNiobiumSolid acid
The invention relates to a niobium-containing compound catalyst for efficiently converting carbohydrates into 5-hydroxymethyl furfural, which has high activity and selectivity for preparing hydroxymethyl furfural (HMF) by dehydrolyzing saccharides and is an ideal catalyst for preparing HMF. When the reaction is performed under moderate conditions, the target product HMF can have a high yield. The catalyst is environment-friendly, is easy to separate and recycle, can be reused, is convenient and practical to operate, and can not corrode the equipment, thereby being an ideal solid acid catalyst for preparing HMF, and having significant industrial application meanings.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Metal surface modification method through emulsion jet
The invention provides a metal surface modification method through emulsion jet, belonging to the processing technology of metal material surface. The metal surface modification method mainly comprises the following steps: preparing an emulsion which can produce effective cavitation bubbles and jet effect; immersing a component to be processed in the emulsion; adjusting a jet nozzle, a jet pressure and a distance between the jet nozzle and the processed metal; carrying out jet processing on the metal surface in the emulsion medium; taking the emulsion as a medium for producing cavitation jet; and forming the metal surface modification method through emulsion jet, thus improving fatigue strength of a test piece by 56% and 11% respectively. The metal surface modification method through emulsion jet of the invention has the advantages of generating the effective cavitation bubbles and improving processing efficiency of the metal surface, generating no corrosion for the metal surface, polluting no environment, having low cost, being not easy to damage the metal surface, having low investment cost and use cost, good use effects and being easy to be promoted and applied; in addition, residual emulsion does not corrode the metal surface.
Owner:CHINA UNIV OF MINING & TECH
Adsorption type heat exchanger unit
InactiveCN103822284ARaise the temperature of the water supplyReduce initial investment costLighting and heating apparatusHot-water central heatingEngineeringAbsorption heat pump
The invention discloses an adsorption type heat exchanger unit, which comprises a hot water adsorption type heat pump unit, a water-water heat exchanger, a primary side pipeline and a secondary side pipeline, wherein the primary side pipeline successively passes through the generator of the heat pump unit, the water-water heat exchanger and the evaporator of the heat pump unit from water supply to water return; the secondary side pipeline passes through the absorber of the heat pump unit, a condenser and the water-water heat exchanger; the heat exchanger unit also comprises a heat supply network heater; before the primary side pipeline enters the generator of the heat pump unit, the primary side pipeline firstly passes through the heat supply network heater. Compared with the prior art, the adsorption type heat exchanger unit has the characteristics that the primary side pipeline is heated by the heat supply network heater before the primary side pipeline enters a heat exchange pump unit to realize a heat supplementation function and further improve the water supply temperature of the primary side pipeline so as to improve the water supply and water return temperature difference of primary side hot water, and therefore the initial investment and operation cost of the adsorption type heat exchanger unit can be further reduced.
Owner:YANTAI EBARA AIR CONDITIONER +1
Method for preparing 5-hydroxymethylfurfural by hydrothermally decomposing wood fibers
The invention discloses a method for preparing 5-hydroxymethylfurfural by hydrothermally decomposing wood fibers, which comprises the following steps: drying and pulverizing wood fibers to 40-120 meshes, soaking with water, treating with an ultrasonic apparatus for 5-20 minutes, mixing with a catalyst and a solvent, and stirring to carry out hydrolysis reaction at 170-250 DEG C for 30-150 minutes; after the reaction finishes, cooling and filtering; extracting the water phase with an organic solvent, merging the extraction liquid and the organic phase, and removing the solvent to obtain the 5-hydroxymethylfurfural. The invention has the advantages of cheap and accessible raw material and abundant sources, can solve the problem of raw material sources of 5-hydroxymethylfurfural, relieves the environmental pollution from stacked waste wood fibers, and enhances the wood fiber hydrolysis efficiency by using ultrasonic processing.
Owner:CENT SOUTH UNIV
Absorptive heat exchanger unit
InactiveCN103836699ARaise the temperature of the water supplyConvenient water supplyLighting and heating apparatusHot-water central heatingEngineeringAbsorption heat pump
The invention discloses an absorptive heat exchanger unit which comprises a hot water type absorptive heat pump unit, a water-water heat exchanger and a primary side pipeline and a secondary side pipeline. The primary side pipeline sequentially passes a generator of the heat pump unit and the water-water heat exchanger from water supply to water return. The heat exchanger unit further comprises a heat supply network heater, and the primary side pipeline has to pass the heat supply network heater before entering the generator. Compared with the prior art, the absorptive heat exchanger unit has the advantages that the heat supply network heater can heat the primary side pipeline before the primary side pipeline enters the heat exchanger pump unit, heat compensation is realized, water supply temperature of the primary side pipeline can be further increased, temperature difference between supply and return of primary-side hot water is increased, and initial investment and operation cost of the absorptive heat exchanger unit can be reduced.
Owner:YANTAI EBARA AIR CONDITIONER +1
Treatment method for corrosion resistance of metal surfaces
InactiveCN109136899AImprove wettabilityEasy to cleanMetallic material coating processesChemical reactionBiological activation
The invention belongs to the field of metal surface treatment, and relates to a treatment method for corrosion resistance of metal surfaces. The treatment method comprises the following steps of (1) performing polishing; (2) performing alkaline degreasing; (3) performing cleaning; (4) performing drying; (5) performing activation; and (6) performing inactivation. According to the method disclosed by the invention, an inactivation film which is high in binding force, good in corrosion resistance, good in color uniformity and good in glossiness is generated on the metal surfaces through a chemical reaction, so that the effect of corrosion resistance for metal is achieved, and further the use deadline of the metal is prolonged.
Owner:东莞市史雷帝三维数控科技有限公司
High-speed wire steel heaping detection method
InactiveCN107377635ANot easy to cause corrosionReduce design costMeasuring devicesRolling safety devicesWire rodEngineering
The invention provides a high-speed wire rod stacking steel detection method, which utilizes double proximity switches for stacking steel detection. The design cost is low, the signal is more stable, and unnecessary failures caused by false signals are avoided. Because it is installed on the top, the weight, sleeve and access opening are not easy to cause corrosion, which ensures the long-term stability of the set of devices, and is economical and practical.
Owner:JIANGSU YONGGANG GROUP CO LTD
Polymer-modified soybean-based plate adhesive and preparation method thereof
InactiveCN106189954AStretched spherical structureIncrease contentNon-macromolecular adhesive additivesMacromolecular adhesive additivesPotassium persulfateEpoxy
The invention discloses a polymer-modified soybean-based plate adhesive. The polymer-modified soybean-based plate adhesive is prepared from, by weight, 0.8-2 parts of polyurethane, 1-2 parts of dodecenylsuccinic acid, 0.4-1 part of oleic diethanolamide, 2-4 parts of polyvinyl alcohol, 170-200 parts of defatted soybean powder, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of styrene, 0.1-0.2 part of potassium persulfate, 3-4 parts of hemicellulase, 10-19 parts of poly diphenyl methane diisocyanate, 60-70 parts of 20-30% hydrochloric acid solution, 0.3-1 part of resorcinol, 2-4 parts of neutral dinonyl-naphthalenesulfonic aci barium salt, 2-3 parts of pectin and the like. The polymer-modified soybean-based plate adhesive has the advantages of being not likely to cause equipment corrosion, long in shelf life, free of formaldehyde, low in residual monomer content, environmentally friendly, good in water resistance and the like.
Owner:QUANJIAO HAIFENG PRINTING PACKAGING
Preparation method of tributyl citrate
ActiveCN109438232AHigh activityGood choiceOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsAlcoholSolid acid
The invention discloses a preparation method of tributyl citrate and belongs to the technical field of chemical catalysts. The method is characterized by directly preparing a tributyl citrate productfrom citric acid and alcohol under the action of a catalyst, wherein the catalyst is attapulgite clay acidized, loaded and modified by protonic acid; the weight ratio of attapulgite clay to protonic acid is (1 to 5)-(1 to 50). The solid acid catalyst used in the method is high in activity; a trace amount of the catalyst is capable of enabling the esterification effect of polybasic acid to basically reach esterification rate of 100%; the catalyst has high selectivity on product; the yield of triesterification product can reach 95% or more; the catalyst can be repeatedly used, is free of obviousreduction of catalysis efficiency, mild in catalysis condition of esterification reaction and low in cost, is environmentally friendly, and has extremely good application prospects.
Owner:安徽新鸿药业有限公司
Ceramic tile jointing device
InactiveCN105952125AQuality assuranceImprove water resistanceBuilding material handlingCorrosionCeramic tiles
The application of the present invention discloses a tile pointing device, which includes a caulking gun, a positioning device and a flattening device. The positioning device is a pair of positioning plates. The positioning plates include a backing plate and a connecting plate connected to the end of the backing plate. The backing plate It is perpendicular to the connecting plate, the height of the backing plate is not more than 2mm, and the thickness of the backing plate is not more than 0.5 mm; The material port, the exhaust port and the vacuum pump, the discharge nozzle of the caulking gun is fixed in the material inlet, the exhaust port is provided with an exhaust one-way valve, and the exhaust nozzle of the vacuum pump is connected with the exhaust one-way valve. The invention can fit the shape of the tile joints for jointing, can discharge the air bubbles in the jointing agent, and can make the jointing agent fully contact with the edges of the tiles, so as to ensure the quality of the tile joints and enhance the ceramic tile joints. It is not easy to cause corrosion of masonry block materials and water leakage of building walls or floors.
Owner:CHONGQING JINYOUYUAN BUILDING MATERIAL
Soybean-base bone glue panel adhesive and preparation method thereof
InactiveCN106118559AStretched spherical structureIncrease contentNon-macromolecular adhesive additivesMacromolecular adhesive additivesPotassium persulfatePolyvinyl alcohol
The invention discloses a soybean-based bone glue plate adhesive, which is composed of the following raw materials in parts by weight: calcium lactobionate 1-2, coconut acid diethanolamide 0.7-1, bone glue 6-8, naphthene Acid soap 0.6‑1, diphenylsilanediol 3‑4, zinc dibutyldithiocarbamate 1‑2, polyvinyl alcohol 2‑4, defatted soybean flour 170‑200, ferric chloride 0.3‑0.4, Ferrous Chloride 0.1‑0.2, Epichlorohydrin 0.8‑1, N‑Methylol Acrylamide 2‑3, Styrene 16‑20, Potassium Persulfate 0.1‑0.2, Hemicellulase 3‑4, Polymerase Phenylmethane diisocyanate 10-19, 20-30% hydrochloric acid solution 60-70, isothiazolinone 0.1-0.2, trinonylphenyl phosphite 0.8-1. The invention has the characteristics of not easy to cause equipment corrosion, long storage period, no formaldehyde, low residual monomer content, good water resistance and the like.
Owner:QUANJIAO HAIFENG PRINTING PACKAGING
Sound insulating soybean-based plate adhesive and preparation method thereof
InactiveCN106189957AStretched spherical structureIncrease contentNon-macromolecular adhesive additivesMacromolecular adhesive additivesPotassium persulfateEpoxy
The invention discloses a sound insulating soybean-based plate adhesive. The sound insulating soybean-based plate adhesive is prepared from, by weight, 0.7-2 parts of 2-benzimidazol-y-yl disulphide, 0.1-0.2 part of dibutyl phthalate, 2-4 parts of polyvinyl alcohol, 170-200 parts of degreased soybean meal, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of styrene, 0.1-0.2 part of potassium persulfate, 3-4 parts of hemicellulase, 10-19 parts of poly(diphenyl methane diisocyanate), 60-70 parts of 20-30% hydrochloric acid solution, 3-4 parts of scolecite powder, 0.8-1 part of sodium alkyl benzene sulfonate, 0.4-1 part of trimethylolpropane, 1-2 part of carbon nano tubes and 0.8-1 part of hexamethylphosphoramide. The sound insulating soybean-based plate adhesive has the advantages of being not prone to cause equipment corrosion, long in working life and deposit term, free of formaldehyde, low in residual monomer content, good in water tolerance and the like.
Owner:QUANJIAO HAIFENG PRINTING PACKAGING
Hydrolysis method of saccharide compound
InactiveCN108950090ALow costHigh activityPhysical/chemical process catalystsInvert sugar productionHydrolysisPolysaccharide
The invention discloses a hydrolysis method of a saccharide compound. Under the action of a solid catalyst, the saccharide compound is hydrolyzed to generate a monosaccharide; the solid catalyst is attapulgite clay; the natural attapulgite clay is subjected to heating treatment under certain temperature, and the acidity of the catalyst is regulated and controlled through different protonic acid under different temperature; then polysaccharide is catalytically hydrolyzed into the monosaccharide; and the hydrolysis method has the characteristics of moderate reaction conditions, low price of allcatalysts, environment friendliness, simple technology, easiness for separating the catalysts, capability of being repeatedly used and the like.
Owner:JIANGSU UNIV OF TECH
Multi-layer chemical engineering glass trough
ActiveCN107140326APrevent leakageWell-preservedLarge containersCompound (substance)Architectural engineering
The invention discloses a multi-layer chemical engineering glass trough. The multi-layer chemical engineering glass trough comprises an embedded trough body, a top cover and a base. The embedded trough body is mounted on the base. The top cover is mounted on the embedded trough body. The embedded trough body comprises a first glass baffle, a third glass baffle, a hollow groove, a second glass baffle and fixing bolts. The first glass baffle is mounted on one side of the embedded trough body. The second glass baffle is mounted on the right side of the first glass baffle. The hollow groove is connected with the second glass baffle. The third glass baffle is connected with the hollow groove. The fixing bolts are mounted on the third glass baffle and connected with the hollow groove. The base comprises fixing rods, bolts and supporting blocks. The multi-layer chemical engineering glass trough is made of multiple layers of glass, so that chemical materials are effectively prevented from being leaked, corrosion and rusting are not prone to occurring, the materials are stored intactly and not prone to being mixed with impurities, and the multi-layer chemical engineering glass trough is convenient to use and long in service life.
Owner:烟台中瑞化工有限公司
Fireproof soybean-based plate adhesive and preparing method thereof
InactiveCN106189951AStretched spherical structureIncrease contentNon-macromolecular adhesive additivesMacromolecular adhesive additivesPotassium persulfateDiacetone alcohol
The invention discloses a fireproof soybean-based plate adhesive. The fireproof soybean-based plate adhesive is prepared from, by weight, 3-4 parts of zinc hydroxystannate, 2-4 parts of polyvinyl alcohol, 170-200 parts of defatted soybean powder, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of styrene, 0.1-0.2 part of potassium persulfate, 3-4 parts of hemicellulase, 10-19 parts of poly diphenylmethane 4,4'-diisocyanate, 60-70 parts of a hydrochloric acid solution with the concentration of 20-30%, 1-2 parts of deca-brominated diphenyl ether, 0.6-1 part of polyphthalamide, 2-3 parts of diacetone alcohol, 0.7-1 part of triethanolamine borate and the like. The styrene copolymerization modified soybean-based adhesive has the advantages of being not likely to cause corrosion of equipment, long in shelf and storage period, free of formaldehyde, low in content of residual monomers, high in environment friendliness and water resistance and the like.
Owner:QUANJIAO HAIFENG PRINTING PACKAGING
System and method for preparing high-purity methyl lactate by direct esterification method
PendingCN113527093AHigh purityIncrease conversion rate per passOrganic compound preparationCarboxylic acid esters separation/purificationPtru catalystMethyl lactate
The invention belongs to the technical field of methyl lactate, and particularly relates to a system and a method for preparing high-purity methyl lactate by a direct esterification method. The system comprises a lactic acid pretreatment tower, a mixing tank, a fixed bed reactor, a neutralization tank, a methanol recovery tower, a dehydration tower, a crude product tower and a product refining tower which are sequentially connected in series; and the specific working steps of the system comprise dehydration, esterification, neutralization and purification, the esterification reaction process is achieved through a fixed bed technology, ion exchange resin HND-8 is adopted as a catalyst in the esterification step, and compared with a traditional sulfuric acid catalyst, the ion exchange resin HND-8 is friendly to equipment and not prone to causing corrosion. Therefore, the methyl lactate product is directly prepared through the continuous synthesis process, the purity of the methyl lactate product reaches up to 99.95% or above, and compared with an existing intermittent process and two-step method for preparing the methyl lactate product, the technological process is simple and easy to operate, and the obtained product is higher in purity and has higher market value.
Owner:EAST CHINA ENG SCI & TECH +1
Quick-drying plant protein board adhesive and preparation method thereof
InactiveCN106221625AStretched spherical structureIncrease contentNon-macromolecular adhesive additivesMacromolecular adhesive additivesEpoxyPolyvinyl alcohol
The invention discloses quick-drying plant protein board adhesive. The quick-drying plant protein board adhesive comprises the following raw materials in parts by weight: 0.4-1 part of zinc hydroxystannate, 0.5-1 part of oleic diethanolamide, 1-2 parts of inositol hexaphosphate, 0.4-1 part of polyglycerol fatty acid ester, 1-2 parts of citric acid, 2-4 parts of polyvinyl alcohol, 170-200 parts of defatted soybean powder, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of phenylethylene, 0.1-0.2 part of potassium peroxodisulfate, 3-4 parts of hemicellulase, 10-19 parts of polydiphenyl methane diisocyanate, 60-70 parts of a hydrochloric solution with the concentration of 20-30%, 2-3 parts of tetrabutyl titanate, 0.6-1 part of saturated octadecanoylamide, 1-2 parts of cellulose propionate and the like. The quick-drying plant protein board adhesive has the characteristics of being unlikely to cause equipment corrosion, relatively long in pot and storage life, free of formaldehyde, low in residual monomer content, good in water resistance and the like.
Owner:程和民
Negative-pressure fuel coal coupled biomass gasification power generation system and electrical energy conversion method
InactiveCN109054905AEasy to measureNot easy to cause corrosionGasification processes detailsCombustible gas productionSlagTar
The invention relates to a negative-pressure fuel coal coupled biomass gasification power generation system and an electrical energy conversion method. Existing fuel coal coupled biomass gasificationpower generation system has the problems that a feeding system is unstable and often causes blocking and fuel gas backflow, large-area slag build-up often happens in the gasifier hearth and causes shutdown, the measures for controlling tar precipitation in gas are insufficient and consequently the tar stains the inner wall and the heated surface of a conveying pipeline and the heat exchange is influenced. The negative-pressure fuel coal coupled biomass gasification power generation system comprises: a feeding device (1), wherein the feeding device is connected with a gasifier system (2) through a pipeline; the gasifier system is connected with an ash treatment device (3) through a pipeline; the ash treatment device is connected with a gas cooling device (4) through a pipeline; the gas cooling device is connected with a gas conveying device (5) through a pipeline; the gas conveying device is connected with a gas burning device (6) through a pipeline; the gas burning device is connectedwith a fuel coal boiler (7). The invention is applied to a negative-pressure fuel coal coupled biomass gasification power generation system.
Owner:HARBIN BOILER
Positive-pressure coal firing/biomass gasification coupled power generation system as well as method for electric energy conversion
InactiveCN109022048AEasy to measureNot easy to cause corrosionChemical industryGasification processes detailsSlagPositive pressure
The invention relates to a positive-pressure coal firing / biomass gasification coupled power generation system as well as a method for electric energy conversion. At present, a coal firing / biomass gasification coupled power generation system has the problems that a feeding system is instable and is liable to cause accidents such as blocking and flue gas returning, a hearth of a gasifier is liable to cause large-scope slag forming, which causes shutdown of the furnace, measures for controlling tar separation in flue gas is insufficient, which causes bad influence on heat exchange due to contamination of the inner wall and heated surfaces of a transporting pipeline due to the tar. The system includes a feeding apparatus (1) which is connected to a gasifier system (2) through a pipeline; the gasifier system is respectively connected to an ash treatment device (3) and a fuel gas cooling device (4) through pipelines; the ash treatment device and the fuel gas cooling device are connected through a pipeline; the fuel gas cooling device is connected to a fuel gas transporting device (5); the fuel gas transporting device is connected to a fuel gas firing device (6) through a pipeline; and the fuel gas firing device is connected to a coal-fired boiler (7). The method is used for the positive-pressure coal firing / biomass gasification coupled power generation system.
Owner:HARBIN BOILER
Method for preparing 5-hydroxymethylfurfural by hydrothermally decomposing wood fibers
The invention discloses a method for preparing 5-hydroxymethylfurfural by hydrothermally decomposing wood fibers, which comprises the following steps: drying and pulverizing wood fibers to 40-120 meshes, soaking with water, treating with an ultrasonic apparatus for 5-20 minutes, mixing with a catalyst and a solvent, and stirring to carry out hydrolysis reaction at 170-250 DEG C for 30-150 minutes; after the reaction finishes, cooling and filtering; extracting the water phase with an organic solvent, merging the extraction liquid and the organic phase, and removing the solvent to obtain the 5-hydroxymethylfurfural. The invention has the advantages of cheap and accessible raw material and abundant sources, can solve the problem of raw material sources of 5-hydroxymethylfurfural, relieves the environmental pollution from stacked waste wood fibers, and enhances the wood fiber hydrolysis efficiency by using ultrasonic processing.
Owner:CENT SOUTH UNIV
Pressure-sensitive adhesive, pressure-sensitive adhesive sheet, and laminate for touch panel
ActiveCN102876263BInhibit deteriorationIncrease concentrationNon-macromolecular adhesive additivesLayered productsAlkoxy groupHeat resistance
The present invention provides a pressure-sensitive adhesive used in a touch panel having a conductive film made of metal or metal oxide, a pressure-sensitive adhesive sheet, and a laminate for a touch panel using the same. Among pressure-sensitive adhesives, they are excellent in heat resistance, moisture-heat resistance stability, and step followability, and are not corrosive to metals or metal oxides. The pressure-sensitive adhesive is characterized by comprising an acrylic polymer (A) and an aliphatic isocyanate-based crosslinking agent (B) in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the acrylic polymer (A). , the acrylic polymer (A) is a unit containing 20 to 99.9% by weight of the following component (a-1) alkoxy (meth)acrylate and (a-2) having a crosslinkable functional group. An acrylic polymer (A) obtained by copolymerizing 0.1 to 10% by weight of a body, having substantially no acidic group, and having a weight average molecular weight of 50,000 or more and less than 400,000.
Owner:SOKEN CHEM & ENG CO LTD
Rubber-powder-containing soybean-base board adhesive and preparation method thereof
InactiveCN106281142AStretched spherical structureIncrease contentMacromolecular adhesive additivesGraft polymer adhesivesPotassium persulfateEpoxy
The invention discloses a rubber-powder-containing soybean-base board adhesive which is prepared from the following raw materials in parts by weight: 0.1-0.3 part of hexamethylcyclotrisiloxane, 1-2 parts of waste rubber powder, 2-4 parts of polyvinyl alcohol, 170-200 parts of defatted soybean flour, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of styrene, 0.1-0.2 part of potassium persulfate, 3-4 parts of hemicellulase, 10-19 parts of polydiphenylmethane diisocyanate, 60-70 parts of 20-30% hydrochloric acid solution, 2-3 parts of aluminum tripolyphosphate, 0.1-0.2 part of phytate, 1-2 parts of saturated octadecacarbamide, 2-3 parts of phosphorus tetrahydroxymethylsulfate, 0.3-1 part of octyl isothiazolinone and the like. The rubber-powder-containing soybean-base board adhesive can not easily cause equipment corrosion, and has the characteristics of long shelf life and storage period, no formaldehyde, low residual monomer content, favorable water resistance and the like.
Owner:QUANJIAO HAIFENG PRINTING PACKAGING
Mechanical assembly with incompatible metallic materials
InactiveCN1692718AReduce thickness and weightImprove the ability of corrosion resistanceVehicle cranksReelsMetallic materialsMetal
The invention provides a machinery component which comprises a magnesium alloy first component, a metal second component connected with the magnesium alloy component at the clearance and an electrolyze insulation filler which is injected between the first component and the second component. The invention also provides a machinery and a method for installing the machinery component.
Owner:SHIMANO INC
Professional far infrared radiation electric heating device for needle coke coking furnace
PendingCN113337303ASimple structureNot easy to cause corrosionHeater elementsHeating element shapesCokeElectric machinery
The invention discloses a professional far infrared radiation electric heating device for a needle coke coking furnace. The device comprises a coking furnace body, a radiation chamber is arranged in the coking furnace body, and an air outlet is formed in the upper portion of the radiation chamber; and a far infrared radiation electric heating layer is arranged on the inner wall of the radiation chamber. The far infrared radiation electric heating layer is coated with an insulating layer; and a rotary disc is installed at the bottom of the radiation chamber, a motor is arranged in the rotary disc, and a plurality of heating pipes are connected to the rotary disc. The professional far infrared radiation electric heating device for the needle coke coking furnace effectively solves the problem that a traditional heating mode easily causes corrosion of the coking furnace.
Owner:YANGZHONG SHENZHOU CHEM POWER EQUIP
Wires and harnesses with terminals
ActiveCN111344905BNot easy to cause corrosionAvoid corrosionCoupling device detailsInsulated cablesElectrical conductorElectrical connection
To provide an electric wire with a terminal and a wire harness which can easily ensure high anticorrosion performance even if the thickness of the resin material constituting the resin covering part which covers the electrical connection part between the terminal part and the electric wire conductor is reduced. cover. It is assumed that the terminal part (1) is as follows: the terminal part (5) and the electric wire (2) covered with the outer periphery of the conductor with the insulating coating layer (4) are electrically connected at the electrical connection part, and the terminal part (5) is made of a resin material and has an electrical connection. The resin covering part (7) covered by the connection part, wherein the resin covering part (7) has a first covering layer (8) and a second covering layer (9), and the first covering layer (8) and The surface of the terminal part (5) is arranged in contact with the area covering at least a part of the terminal part (5), the second covering layer (9) covers at least part of the first covering layer (8), and the first The cladding layer (8) has a recess covered by the second cladding layer (9).
Owner:AUTONETWORKS TECH LTD +2
Damp-heat-resistant soybean-based board adhesive and preparation method thereof
InactiveCN106281146AStretched spherical structureIncrease contentNon-macromolecular adhesive additivesMacromolecular adhesive additivesPotassium persulfatePolyvinyl alcohol
The invention discloses a damp-heat-resistant soybean-based board adhesive. The adhesive is prepared from, by weight, 2-3 parts of polymaleic anhydride, 2-4 parts of polyvinyl alcohol, 170-200 parts of defatted soybean powder, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of styrene, 0.1-0.2 part of potassium persulfate, 3-4 parts of hemicellulase, 10-19 parts of 4,4'-diphenylmethane diisocyanate, 60-70 parts of 20-30% hydrochloric acid solution, 0.6-1 part of ammonium alcohol ether sulphate, 2-4 parts of palm wax, 0.6-1 part of 2,2-dimethylolpropionic acid, 0.01-0.02 part of stannous octoate, 0.01-0.02 part of divinyl benzene, 4-6 parts of zirconium oxychloride octahydrate and the like. The adhesive has the advantages that equipment is not likely to be corroded, pot-life storage life is long, the adhesive is free of formaldehyde, the residual monomer content is low, and water resistance is good.
Owner:QUANJIAO HAIFENG PRINTING PACKAGING
Cable with terminal formed therein and wire harness
ActiveCN111344905AGuaranteed anti-corrosion performanceWell formedCoupling device detailsInsulated cablesElectrical conductorElectrical connection
Provided are a cable with a terminal formed therein and a wire harness, in which a high anti-corrosion performance is easily achieved even when the thickness of a resin material constituting a resin covering part covering an electric connection part between a terminal fitting and a cable conductor is made small. The cable 1 with the terminal formed therein is characterized by electrically connecting a terminal fitting (5) and an electric wire (2) which covers the outer periphery of the conductor with the insulating coating layer (4) at the electric connection part, and having a resin coating part (7) which is made of a resin material and coats the electric connection part, wherein the resin coating part (7) is provided with a first coating layer (8) and a second coating layer (9),the firstcoating layer (8) is provided in a region that coats at least a part of the terminal fitting (5) so as to be in contact with the surface of the terminal fitting (5), the second coating layer (9) coats at least a part of the first coating layer (8), and the first coating layer (8) has a recessed portion that is coated with the second coating layer (9).
Owner:AUTONETWORKS TECH LTD +2
Multi-layer chemical glass tank
ActiveCN107140326BPrevent leakageWell-preservedLarge containersArchitectural engineeringCompound (substance)
Owner:烟台中瑞化工有限公司
A kind of preparation method of tributyl citrate
ActiveCN109438232BHigh activityGood choiceOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystSolid acid
The invention discloses a preparation method of tributyl citrate, belonging to the technical field of chemical catalysts. The method of the present invention utilizes citric acid and alcohol to directly obtain a citric acid triester product under the action of a catalyst; wherein the catalyst is attapulgite clay modified by protonic acid acidification loading, and the weight ratio of attapulgite clay to protonic acid is 1:5 ~1:50. The solid acid catalyst used in the method of the present invention has high activity, and the esterification effect of a small amount of catalyst on the polybasic acid can basically reach 100% esterification rate; the product has good selectivity, and the yield of the triesterification product reaches 95%. More than %; can be used repeatedly, and the catalytic efficiency is not significantly reduced. The catalytic esterification reaction has mild conditions, is environmentally friendly, and has low cost, and has very good application prospects.
Owner:安徽新鸿药业有限公司
A method for preparing furan compounds and liquid naphthenes by full utilization of primary biomass
ActiveCN107445925BReduce usageEffective depolymerizationOrganic chemistryLiquid hydrocarbon mixture productionFuranPtru catalyst
In a two-phase system of an organic phase and an aqueous phase, an inorganic neutral halogen salt serves as a catalyst, so that high-efficiency conversion from primary biomass to 5-hydroxymethylfurfural (HMF) and furfural can be realized. An aqueous solution containing the inorganic neutral halogen salt can be recycled after the reaction is ended; the upper organic phase is subjected to alkali treatment, so that a relatively pure organic solution containing the 5-hydroxymethylfurfural (HMF) and furfural and xylogen residues can be obtained; the obtained xylogen residues are further hydrogenated under the action of a noble metal or transition metal multifunctional catalyst so as to obtain the liquid naphthenes. The method disclosed by the invention has the advantages that usage of an acid catalyst is not involved in the dehydration reaction process, and the produced 5-hydroxymethylfurfural and furfural can be efficiently extracted into the upper organic phase after the reaction is ended; after the organic phase is washed with alkali liquor, the xylogen residues are obtained by acid neutralization, the liquid naphthenes are prepared by one-step hydrogenation, and the method is simple in operation, realizes total conversion of the primary biomass and has excellent industrial application prospects.
Owner:EAST CHINA UNIV OF SCI & TECH
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