25results about How to "Moderate fluidity" patented technology

The invention relates to the technical field of composite materials, and provides a cellulose nanocrystalline composite material as well as a preparation method and application thereof. The cellulose nanocrystal composite material provided by the invention comprises cellulose nanocrystals and a fluorescent dye, and the fluorescent dye comprises a Hurst fluorescent dye. According to the present invention, the hydrophilic Hurst fluorescent dye is selected to be compounded with the cellulose nanocrystal, such that the composite material with characteristics of circular polarization fluorescence property, phosphorescence emission property and high fluorescence quantum yield is provided, and the material is environmentally friendly, has small influence on the environment during preparation and use, and has great application potential in the anti-counterfeiting field.

The invention discloses a mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material as well as a preparation method and application thereof, and belongs to the technical field of solid waste utilization and road grouting reinforcement. The mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material comprises a multi-source solid waste aggregate and 0.01-0.015 wt% of a water reducing agent mixed in the multi-source solid waste aggregate, wherein the multi-source solid waste aggregate is prepared from the following raw materials in percentage by weight: 40.5-43.5 wt% of red mud, 40.5-43.5 wt% of quick-hardening sulphoaluminate cement, 9-10 wt% of mineral powder and 3-10 wt% of desulfurized gypsum; the mass ratio of the red mud to the quick-hardening sulphoaluminate cement is 1: 1. The mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material can be hydrated to generate spar with a supporting effect, so that the grouting material has high stone strength in an early stage and high stone strength stability in a later stage, and generated spar particles can interact with a water reducing agent; and meanwhile, the problem of stockpiling of contained solid wastes is effectively solved, and the preparation cost is greatly reduced.

The invention provides a 3D printing rapid prototyping system based on multi-nozzle collaboration.The 3D printing rapid prototyping system based on multi-nozzle collaboration.The 3D printing rapid prototyping system based on multi-nozzle collaborationcomprises a printing unit, a control unit and an auxiliary unit, the printing system comprises a multi-nozzle device and a printing platform, nozzles can be independently controlled, the spacing angle can be adjusted, and the platform can be heated and cooled; the control module covers motion, material and temperature control and central control units, realizes cooperative motion, material supply and temperature control of the spray head and coordinates the work of each unit, and the auxiliary unit comprises a support structure generation and post-processing unit, and the system solves the problems of slow printing speed and limited material color of a traditional single spray head, improves the printing speed, and improves the printing efficiency. Multiple material colors can be printed at the same time, printing quality is improved, and system reliability and stability are enhanced.

The invention relates to the technical field of propylene dimerization catalysts, and discloses a propylene dimerization catalyst, a preparation method thereof and a method for preparing 4-methyl-1-pentene through propylene dimerization, the preparation method comprises the following steps: (1) mixing alkali carbonate, graphite fluoride, methylcellulose and potassium stearate, and carrying out molding and molding roasting to obtain a carrier; wherein the mass ratio of the alkali carbonate to the graphite fluoride to the methyl cellulose to the potassium stearate is 100: (0.5-5): (0.1-20): (0.1-30); (2) loading an active metal on the carrier; wherein the active metal is selected from sodium and / or potassium. The catalyst prepared by the preparation method has high propylene conversion per pass and high 4M1P selectivity.

The invention discloses a mine environment ecological restoration system, and relates to the technical field of environment ecological restoration, and the technical scheme is that the mine environment ecological restoration system comprises a spray-seeding frame body, the upper part of the spray-seeding frame body is fixedly connected with a feeding port, the interior of the spray-seeding frame body is fixedly connected with a mixing box, the interior of the mixing box is fixedly connected with a sieve plate, and the upper part of the spray-seeding frame body is provided with a first motor; the output end of the first motor is provided with a first transmission wheel, the first transmission wheel is in transmission connection with a transmission belt, the transmission belt is in transmission connection with a second transmission wheel, and the second transmission wheel is fixedly connected with a first eccentric shaft. In the soil adding stage, a first motor is started to drive a first transmission wheel to rotate, the first transmission wheel rotates to drive a second transmission wheel and a worm wheel to rotate synchronously, and the second transmission wheel rotates to drive a pressing pad to move in a reciprocating mode, so that soil is continuously pressed downwards, and cakes in the soil are effectively crushed.

The invention relates to the technical field of polymer composite material processing, and discloses a polyphenyl ether modified EVA (Ethylene Vinyl Acetate) hot melt adhesive and a preparation method thereof. The hot melt adhesive is prepared from the following components in parts by weight: 35 to 50 parts of EVA (Ethylene Vinyl Acetate) resin, 5 to 20 parts of polyphenyl ether, 30 to 60 parts of tackifying resin, 5 to 20 parts of wax and 0.4 to 0.8 part of composite antioxidant. EVA and PPE in a specific ratio are selected as base materials (wherein EVA is the main base material), and a proper amount of tackifying resin is added into the system to modify the EVA hot melt adhesive, so that the melt viscosity of the system is reduced, the cohesion of the hot melt adhesive and the wettability of the hot melt adhesive on a bonding interface are improved, the bonding strength is enhanced, and the performance is further improved; the tackifying resin is low in volatile matter, and the softening point of the tackifying resin is higher than that of EVA resin, so that the softening point of the hot melt adhesive can be further improved, and the low-temperature resistance, mechanical property and ageing resistance of the hot melt adhesive are improved.

The present invention relates to a resin composition and a foam substrate, in which the resin composition comprises a first resin and a solvent, in which the viscous flow activation energy of the first resin is 5-40 kJ / mol under the conditions of 120-180 DEG C and a shear rate of 0.05 s <-1 >-1 s <-1 >, the surface tension of the resin composition is 25-70 mN / m, and the viscosity of the first resin is 5-40 kJ / mol under the conditions of 120-180 DEG C and a shear rate of 0.05 s <-1 >-1 s <-1 >. The foam base material comprises a foam core material and a coating coated on the surface of the foam core material, and the coating is obtained by curing the resin composition. The resin composition can completely coat the surface of a foam core material, so that the improvement effects of water absorption and weather resistance of the foam core material are remarkably improved, and a foam base material prepared from the resin composition has excellent environmental tolerance, does not easily absorb water and can be better applied to the technical field of communication.

The invention relates to traditional Chinese medicine gel for treating thyroid nodules from liver as well as a preparation method and application of the traditional Chinese medicine gel. The traditional Chinese medicine gel takes an extracting solution of a traditional Chinese medicine composition as an effective component in parts by weight, the traditional Chinese medicine composition comprises the following raw materials: 15-25 parts of selfheal, 10-20 parts of radix bupleuri, 8-15 parts of vinegar-processed curcuma zedoary, 8-15 parts of fructus forsythiae, 5-15 parts of thunberg fritillary bulb, 5-15 parts of moutan bark, 5-8 parts of scutellaria baicalensis, 5-10 parts of oyster, 3-8 parts of mint and 3-8 parts of borneol. From the perspective of soothing liver-qi stagnation, the thyroid nodules are treated by firstly soothing liver-qi stagnation and cooperating with phlegm reducing, stagnation resolving, blood circulation promoting and blood stasis removing, mint and borneol are added in the formula, and the overall improvement effect of the external medicine on unhealthy emotions such as depression and anxiety and the dissipation effect on the nodules are enhanced. Meanwhile, all the medicinal materials in the formula are classified, extracted and refined, all the effective components are reserved to the maximum extent, transdermal absorption is good, and the effects of reducing swelling, removing stasis and improving the depressive emotion are improved.

The invention discloses a method for preparing PET (Polyethylene Terephthalate) copolyester in a short process. The method comprises the following steps: mixing waste PET polyester, an alcoholysis agent and a catalyst, carrying out alcoholysis reaction in a closed reaction kettle, stopping the reaction when the number-average molecular weight of an oligomer obtained by the alcoholysis reaction is 5000-7000 g / mol and the polymerization degree is 25-35, and then completing a condensation polymerization reaction under a high vacuum condition to obtain the PET copolyester. The method comprises the following steps: carrying out alcoholysis reaction on waste PET polyester under the action of an alcoholysis agent ethylene glycol and a catalyst (such as a titanium bimetallic catalyst), and accurately controlling an oligomer obtained by the alcoholysis reaction to be in a state that the number-average molecular weight is 5000-7000 g / mol and the polymerization degree is 25-35 by regulating and controlling the reaction temperature and the reaction time. Then the alcoholysis reaction product is directly used for condensation polymerization to prepare PET copolyester, and recycling of PET waste is achieved. Meanwhile, after the alcoholysis reaction is finished, the system does not need any separation step, and the polycondensation reaction is directly carried out, so that the process flow is greatly simplified, and the time cost is reduced.

The application discloses instant flower glue with high elasticity and high glycosaminoglycan retention rate and a preparation method thereof. After cleaning and steaming of the flower glue, the flower glue is soaked in water below 20 DEG C, then mixed and dissolved with donkey-hide gelatin instant powder, milk and granulated sugar, sealed, filled and sterilized, and finally cooled by water cooling, with the cooling rate controlled within 10-15 DEG C / min, so that the center temperature of the product is steadily decreased to 25+ / -0.5 DEG C, and the instant flower glue is prepared. The instant flower glue prepared by the method has excellent texture characteristics, Q elastic and smooth, and does not stick to teeth. The flower glue has good water retention, and the proportion of free water is as high as 85% or more. Most importantly, the method maximally retains glycosaminoglycan in the flower glue, and the degradation of active ingredients such as chondroitin sulfate is reduced, and the dry base content is high.

The invention relates to the technical field of photosensitive resin and preparation thereof, in particular to 3D printing ceramic slurry with moisture-proof photosensitive resin and a preparation method of the 3D printing ceramic slurry, the 3D printing ceramic slurry comprises a hydrophobic monomer, the hydrophobic monomer comprises one or more of trimethylolpropane triacrylate, ethoxylated bisphenol A diacrylate and isobornyl methacrylate; the coating also comprises a diluting monomer, a photoinitiator, an auxiliary agent, a hydrophobic filler and ceramic powder. On one hand, by introducing the hydrophobic monomer, the moisture resistance of the photosensitive resin is remarkably improved, and the water absorption rate is reduced from the source; on the other hand, hydrophobic filler nano silicon dioxide is treated; nano silicon dioxide and a silane coupling agent are mixed and stirred to obtain modified silicon dioxide, so that the dispersity and hydrophobicity of the modified silicon dioxide in photosensitive resin slurry are enhanced. The surface wettability and dispersing performance of the ceramic powder are improved, powder agglomeration is reduced, and the uniformity of the slurry is improved.

This invention discloses a formaldehyde-free adhesive for plywood with a long drying time, its preparation method, and its application. The preparation method includes the following steps: 1) Preparing modified isocyanate: Castor oil and polyisobutylene are stirred and mixed at 60-90°C to obtain a mixture, preferably with a stirring time of 0.5-2 hours; a polyfunctional isocyanate is added to the mixture, and after reacting for 2-4 hours, the mixture is cooled to obtain modified isocyanate; 2) A mixture of water, flour, and a composite water-retaining agent is mixed with the modified isocyanate to obtain the adhesive. The above method is used to provide a formaldehyde-free adhesive for plywood with a long drying time.

The utility model discloses an atomization oil injection system of a horizontal double-shaft paddle mixer, which relates to the field of feed mixers, and adopts the technical scheme that the atomization oil injection system comprises the double-shaft paddle mixer, the double-shaft paddle mixer comprises a shell, the top of the shell is provided with a feed inlet, a stirring cavity is arranged in the shell, stirring paddles are arranged in the stirring cavity, and the feed inlet is communicated with the feed inlet. Two sliding rods are fixedly arranged in the part, located on the upper portion of the mixing cavity, of the shell, each sliding rod is provided with a sliding block in a sliding mode, an oil pipe is fixedly arranged on the two sliding blocks, two rows of atomizing nozzles are arranged on the oil pipe, and each row of atomizing nozzles face one stirring blade; one end of the oil pipe is connected with a hose which is connected with an oil storage tank. The feeding device has the advantages that the oil spraying pipe automatically laterally moves to avoid the feeding port during feeding, the material impact risk is thoroughly eliminated, and spraying coverage is guaranteed after resetting and accurate centering.

The present invention provides a blast furnace carbon grouting material and a preparation method thereof. The raw materials for preparing the blast furnace carbon grouting material include the following components in mass percentage: 10% to 35% silicon carbide particles, 10% to 32% petroleum coke particles, 1% to 5% alumina particles, 30% to 45% silicon carbide fine powder, 1% to 8% coke powder, 1% to 4% alumina powder, 1% to 5% fused magnesia powder, 1% to 4% silicon powder, 2% to 6% quartz powder, 0.05% to 1% metal aluminum powder, 0.05% to 1% metal chromium powder, and 20% to 30% liquid resin. The blast furnace carbon grouting material has good fluidity and meets the construction requirements of the blast furnace grouting material. At the same time, after the grouting material is used to seal the cracks in the furnace cylinder, it has excellent strength performance at high temperature.

The invention relates to the technical field of polymer film materials, in particular to a light-cured TPU waterproof and moisture-permeable film and a preparation method thereof.The preparation method comprises the following steps that polyether polyol, polyurethane acrylic resin and auxiliaries are heated and mixed to be uniform, then the mixture and MDI are subjected to extrusion granulation, and light-cured moisture-permeable TPU particles are obtained; pE particles and light-cured moisture-permeable TPU particles are subjected to blow molding through an extruder A and an extruder B to form a TPU / PE composite film, the TPU / PE composite film is cooled and then subjected to curing and crosslinking through an ultraviolet emitting device, then trimming and rolling are conducted, and the light-cured TPU waterproof moisture-permeable film is obtained. During low-temperature TPU processing, the stability of the raw materials can be kept, material degradation or side reaction caused by high temperature is reduced, the operability in the film processing process is remarkably improved, in addition, the prepared light-cured TPU waterproof and moisture-permeable film can keep stable physical and chemical properties at higher temperature, and the light-cured TPU waterproof and moisture-permeable film has the advantages of being good in waterproof and moisture-permeable performance and good in waterproof and moisture-permeable performance. And deformation, softening or damage cannot easily occur.

The application relates to the technical field of construction materials, in particular to a resin concrete and application of the resin concrete in electrolytic cells. The epoxy resin concrete comprises the following components: a phenolic epoxy resin; an epoxy-terminated hydrogenated butyronitrile rubber; a modified alicyclic amine curing agent; a graded spherical silicon carbide micro powder; and a silicone defoaming agent; wherein the graded spherical silicon carbide micro powder is composed of coarse powder, medium powder and fine powder; the coarse powder accounts for 60% of the total mass of the graded spherical silicon carbide micro powder, the medium powder accounts for 25%, and the fine powder accounts for 15%. The phenolic epoxy resin without ester bonds is used in cooperation with the epoxy-terminated hydrogenated butyronitrile rubber with a saturated main chain to solve the problems of easy degradation under high-temperature acid and alkali environments and insufficient weather resistance of traditional toughening agents, the graded spherical silicon carbide micro powder is used to improve the mechanical properties of the electrolytic cell, and the construction fluidity requirement is met.

The invention discloses a formaldehyde-free adhesive with long glue drying time for plywood as well as a preparation method and application of the formaldehyde-free adhesive. The preparation method comprises the following steps: 1) preparing modified isocyanate: stirring and mixing castor oil and polyisobutene at 60-90 DEG C to obtain a mixture, and preferably stirring for 0.5-2 hours; adding polyfunctional isocyanate into the mixture, reacting for 2-4 hours, and cooling to obtain modified isocyanate; and 2) mixing a mixed component consisting of water, flour and the composite water-retaining agent with the modified isocyanate to prepare the adhesive. The method is used for providing the formaldehyde-free adhesive with long glue drying time for the plywood.

An anti-freezing structure for a carton bonding device relates to the technical field of cartons and comprises a conveyor belt mechanism, a glue woven bag is placed on a conveyor belt, a middle transverse plate is arranged at the bottom of the conveyor belt mechanism, a plurality of heating plates are arranged on the middle transverse plate, and a sealing cover is mounted on the outer side of the conveyor belt mechanism. According to the anti-freezing device, the conveyor belt mechanism, the heating plate, the sealing cover and other components are combined, and effective anti-freezing of the glue woven bag in the cold environment is achieved. The carton pasting device can ensure that glue keeps proper flowability in the conveying process and prevent the glue from being frozen, and therefore normal operation of the carton pasting device is guaranteed.

The invention discloses a filling method of a giant blast furnace blow-in sleeper, which comprises the following steps of: controlling the quantity and the granularity of bottom coke and matching with the requirements of the material, the shape and the filling mode of the sleeper, the protection mode of a tuyere area and the shape of a center stack tip; mechanical protection of a tuyere area can be achieved, materials on the upper portion can be fully heated, the materials slowly and evenly descend, a hearth is fully heated, the liquidity of liquid slag iron is good, it can be guaranteed that the liquidity of primary iron is appropriate, and slag iron is smoothly separated. The method aims at solving the problems that in the blow-in process, the sleeper filling rate is too low, materials on the upper portion decline unevenly, a tuyere is prone to damage, and the primary iron fluidity is difficult to guarantee.

This disclosure provides a safety coating slurry, a current collector, and a method for preparing the same, as well as a battery, belonging to the field of battery materials. The safety coating slurry for the current collector, by weight, comprises 30-50 parts of polymer material, 1-5 parts of conductive agent, 10-30 parts of aqueous binder, 0.5-3 parts of aqueous dispersant, and 10-20 parts of solvent. The polymer material includes polyvinylidene fluoride-hexafluoropropylene. The coating slurry of this disclosure, when applied to the surface of the current collector, can increase resistance during battery short circuits, preventing overheating and explosion, thus improving battery safety; it also increases the bonding force between the active material and the current collector, preventing active material detachment, and the safety coating has stable chemical properties and is not easily cracked, further increasing safety and battery performance; the coating uniformity and thickness can be precisely controlled. This solves the technical problems of existing safety coatings, such as difficulty in controlling uniformity and thickness, easy detachment of active materials, and susceptibility to cracking during use.

The present invention belongs to the technical field of lithium-ion batteries, and specifically relates to a composite gel electrolyte, a preparation method thereof, and an application thereof. The composite gel electrolyte provided by the present invention comprises a gelling agent, basalt fiber powder, and an electrolyte. Adding basalt fiber powder as a reinforcing filler in the gel electrolyte enhances the thermal stability of the gel electrolyte and its inhibitory effect on lithium dendrites; the solvent and lithium salt in the added electrolyte can act as a plasticizer to reduce the crystallinity of the gelling agent, and at the same time form a gel phase with the gelling agent, thereby improving the ionic conductivity of the composite gel electrolyte; the gel electrolyte has a certain fluidity, and a battery can be constructed by a liquid injection method, thereby reducing the process difficulty during battery assembly.

The invention provides reactive hot melt glue for bonding, and belongs to the technical field of hot melt glue. The adhesive comprises the following components in percentage by mass: 70-90% of thermoplastic polyurethane, 5-20% of epoxy resin, 4-10% of a latent curing agent and 0-5% of an accelerant, the softening point of the thermoplastic polyurethane is higher than the temperature required by epoxy curing, and the curing temperature of the latent curing agent is higher than the room temperature and lower than the softening point of the thermoplastic polyurethane. The thermoplastic polyurethane is used as a main body material, and the epoxy resin, the latent curing agent and the accelerant are added, so that the adhesive film has enough flexibility and room-temperature storage stability, and has enough adhesive strength after being cured. The flowability and the flexibility of the adhesive can be well matched with the fabric, so that the appearance and the hand feeling are not influenced while high-strength bonding is realized.

This invention belongs to the field of electropolishing technology, specifically relating to an electrochemical polishing slurry for nickel-iron-based high-temperature alloys, its preparation method, and its application. In the electrochemical polishing slurry provided by this invention, naphthalenesulfonic acid, butynediol, ethanol, and specific polyols and acids are organically combined. Their synergistic effect can effectively polish high-temperature alloys, especially nickel-iron-based high-temperature alloys commonly used in high-temperature components of ultra-supercritical units, effectively reducing alloy surface roughness and improving surface smoothness and reflectivity. Notably, ethanol is not a conventional component in polishing slurries. This invention is the first to discover that the use of ethanol can promote the removal of air bubbles during polishing, increase polishing uniformity, and effectively reduce alloy surface roughness. Furthermore, the electrochemical polishing slurry provided by this invention exhibits strong stability, can be reused repeatedly, and is not prone to aging.

The invention relates to the technical field of foaming materials, in particular to a polypropylene foaming material and a preparation method thereof. The polypropylene foaming material comprises the following components in parts by weight: 88-96.5 parts of polypropylene resin, 0.5-2 parts of a sensitizing agent, 2-5 parts of a nucleating agent and 1-5 parts of other auxiliary agents. The preparation method of the polypropylene foaming material comprises the following steps: S101, uniformly mixing polypropylene resin, a sensitizing agent, a nucleating agent and a compound additive according to a ratio to obtain a mixed material; s103, feeding the mixed material into an extruder, and carrying out extrusion granulation; s105, carrying out irradiation crosslinking on the extrudate obtained in the step S103; and S107, performing blow molding, extruding and foaming to obtain the polypropylene foaming material. The polypropylene foaming material is high in foaming ratio.

The invention discloses an electric vacuum ceramic-metallized cold spraying glaze and a production method, and belongs to the technical field of electric vacuum ceramic-metallized cold spraying glaze, the electric vacuum ceramic-metallized cold spraying glaze comprises the following components by weight: 55-75 parts of potassium feldspar, 0.5-5 parts of calcined talc, 0.1-2 parts of calcite, 10-20 parts of clay, 10-20 parts of quartz, 0-5 parts of barium carbonate, and 0-5 parts of zirconium dioxide. According to the cold spraying glaze formula and the process, the process is simple, and the prepared glaze slurry has very strong thixotropy and proper flowability. As the glaze slurry has proper flowability and stronger adhesive force, the glaze slurry does not flow when being naturally dried on the surface of the ceramic shell, and can be well attached to the surface of the ceramic shell. After high-temperature sintering in a hydrogen environment, a smooth, bright, uniform and compact glaze surface with certain opacity can be obtained, and impurities in a glaze layer can be effectively controlled.