112results about How to "Stop evaporation" patented technology

The invention discloses an organic mulch on an earth surface of garden trees and an application method thereof and belongs to the technical field of garden planting. The organic mulch on the earth surface of the garden trees is prepared by mixing the following components in percentage by weight: 60-70% of pine bark, 25-30% of pine needle and 5-10% of Trichoderma water dispersible granule. By utilizing the organic mulch, water, fertilizer, gas and heat situations of the garden tree earth can be improved, weeds can be prevented from growing, and the purposes of retaining water and soil and optimizing environment can be achieved.

An electrode device has a conductive body, a silver layer situated above the conductive body, a silver compound layer situated above the silver layer, a liquid absorbing and releasing element situated above the silver compound layer, a shielding element configured to cover an upper surface and a portion of a side surface of the liquid absorbing and releasing element, and a moving mechanism configured to move the shielding element reciprocally between at least two positions.

The invention discloses a curing agent in concrete, which comprises the following components: hydroxyl starch, starch grafted hydroxyethyl methacrylate, methyl cellulose, polyacrylamide, lignin sulfonate and aqua is preferred, wherein alcohol can be also added in as co-solvent. The curing agent in concrete has small admixture amount, is convenient to use, has very strong water absorbing and conserving capability in the concrete and blocks the water in the concrete from being evaporated externally; and even if the concrete is not cured by the water (moisture) from the outside environment after being cast, gelled material can have good hydration reaction, thereby greatly improving the strength of the concrete, reducing dryness and shrinkage, and preventing cracking.

The invention discloses a dust suppressant as well as a preparation method and an application thereof. Based on 100 parts by weight, the dust suppressant consists of 8-10 parts of pure acrylic emulsion, 0.2-0.4 part of sodium dodecyl sulfate, 0.2-0.4 part of sodium carboxymethyl cellulose, 1-2 parts of starch, 0.1-0.2 part of anhydrous sodium sulfate and the balance of water. The preparation method for the dust suppressant comprises the following steps: heating water until boiling, adding the pure acrylic emulsion and the sodium dodecyl sulfate, controlling the temperature to 75-95 DEG C to stir for 20-50 minutes, then, adding the starch and the anhydrous sodium sulfate, controlling the temperature to 75-95 DEG C to further stir for 20-60 minutes, then, adding sodium carboxymethyl cellulose to for further stir for 20-60 minutes, and cooling to the room temperature, thereby obtaining the dust suppressant which is environmentally friendly, low in cost and free of secondary pollution. The dust suppressant disclosed by the invention is used for suppressing dust in a powder storage yard, wherein the dust suppressing rate is up to over 85%.

The invention relates to a dust suppressing and sand fixing agent. The dust suppressing and sand fixing agent is prepared from the following components in parts by weight: 18 to 24 parts of xanthan gum, 25 to 37 parts of hydroxypropyl methyl cellulose, 16 to 28 parts of modified starch and 25 to 40 parts of sesbania gum powder. Under the synergistic action of all the components, the functions of moisturizing, bonding and agglomerating the dust can be realized, and the aims of good sand-fixing effect, high permeability, no pollution to the environment, low cost and facilitation for preparation and construction can be achieved; meanwhile, the problems of poor dispersity, poor permeability and insufficient dry strength can be solved.

The invention provides a concrete curing agent which is prepared from the following components in parts by weight: 90-99 parts of core-shell structure macromolecule emulsion, 0-5 parts of film-forming aid, 0.1-2 parts of defoaming agent, 0-5 parts of leveling agent and 0-1 part of thickening agent. The concrete curing agent is simple in preparation method, the emulsion of a core-shell structure is prepared by using an emulsion polymerization method, hydroxyl groups are introduced into the shell layer, and the hydroxyl groups can have chemical bonding action with silicon atoms on the surface of the concrete, so that the binding force of the curing agent with the surface of the concrete is improved, and the water retention effect of the concrete curing agent is ensured.

The invention relates to the fields of hot-dip galvanizing alloy technology and auxiliary equipment used therefor, and specifically relates to a dry and wet gas mixing and humidifying device for inhibiting zinc ash in hot galvanizing and a use method thereof. The device comprises a furnace nose (10), and is characterized by also comprising a water tank (1), a water inlet pipe (21), a water discharge pipe (22), an air inlet pipe (23), a flow meter (33), a water level gauge (41), a heater (42), a dew-point instrument (43), a dry gas header pipe (5), a dry wet gas mixing pipe (6), and a control device (7). The use method comprises the following steps in sequence: (i) introducing dry gas; (ii) humidifying the dry gas; (iii) mixing dry gas and wet gas; and (iv) regulating the dew point. The device and method have the advantages that the zinc ash is well inhibited, the strip steel quality is high, the control is accurate, and the automation degree is high.

The invention discloses a method for treating stripping diseases of medium bed in loess slopes. The method comprises the following steps: slopes are renovated; a layer of nutrient wheat straw mud which is formed by evenly stirring of a mixed material and water according to the volume rate of 2.5 : 3.5 to 1 is painted on the renovated slope; the mixed material is evenly mixed by wheat straw stalks, clay, mixed fertilizer and grass seeds according to the volume rate of 25-35:58-62:0.5-1.5:8.5-9.5; the mixed fertilizer is a chemical fertilizer or a fertilizer which is evenly mixed by the chemical fertilizer and farmyard manure according to the proportion of 15-25:5-15; the chemical contains 10 wt% to 15 wt% of nitrogen and 15 wt% to 20 wt% of potassium phosphate; a metal net is covered on the painted nutrient wheat straw mud layer; the covered metal net is laid with a layer of non-woven fabric; and maintenance is carried out to the nutrient wheat straw mud. The invention has simple and easy operation, low cost and good treating effect and can effectively solve the problem of stripping diseases of medium bed in loess slopes.

The invention discloses a skin care composition with moisturizing efficacy, which comprises a phase A, a phase B and a phase C, wherein the phase A contains emulsifier and grease; the phase B contains moisturizer, penetration enhancer, nutrient and the like; and the phase C contains preservative and essence. The invention also discloses a preparation method of the skin care composition. In the invention, the traditional assistant and guide prescription idea of the traditional Chinese medicine is adopted to design an efficacy system, and a silicon oil-in-water preparation system is adopted, thus the skin care composition disclosed by the invention has better functions of moisturizing the skin and maintaining the moisture, and the skin is fresh and greaseless. Simultaneously, the system can bear traditional Chinese medicine additives enriching many ions, thus the obtained product has an obvious moisture maintaining effect.

This invention discloses method and equipment for preparing lead iodide single crystals from lead iodide melt, which comprises the steps of: cleaning an ampule, filling it with lead iodide powders, degassing and sealing the ampule, growing the single crystals and cooling. The method can effectively suppress the decomposition of lead iodide melt and the vaporization of iodine, and can remove segregated lead. The ampule is made of a quartz tube, and comprises a seed crystal bag, a growth chamber, a connecting vessel, a lead tube, a loading bag anb a hook. After filling, the ampule is placed into a two-stage temperature range vertical tubular furnace to finish the growth of the single crystals. The as-grown single crystals are orange and semi-transparent with sizes up to Phi (15-20)X30 mm. The electrical resistivity of as-grown single crystals can reach 1012-1013 ohm .cm, thus the single crystals have wide applications, especially as room temperature nuclear radiation detector.

The invention relates to a steel frame greenhouse technology for peach tree in low-latitude plateau area. The technology is characterized in that steel pipes are welded to form a semicircular steel frame greenhouse to be fixed to the peach tree farmland; a plastic greenhouse film and an inspect proof nets cover the frame; a nonwoven fabric covering surface is hung in the greenhouse; the plastic greenhouse film and the nonwoven fabric are contracted and stretched to realize the control to the temperature in the greenhouse of the peach tree at different growth periods and under the changeful air temperature condition at the low-latitude plateau area; meanwhile, an underground irrigating device, a novel double-layer ground film and a special fruit bag and other technologies are adopted, thus the damage factor under the natural condition is removed, the natural growth state of the peach tree is remained to the maximum, and the quantity of applied pesticides and chemical fertilizers is greatly decreased; the water for irrigating is about 40% that under the common planting condition, and the output is more than 150% that under the common planting condition; in addition, the peach quality is far more than that of the common peach, and the market price is 5 times that of the common peach.

The invention relates to a radiating method for an LED module, which is characterized in that an LED luminous component contacts the outer wall of a perfusion sealed container closely; the perfusion sealed container consists of a primary tank, a pipe nipple, and a cover, which are encircled by a heat conduction material, wherein the outer wall of the primary tank is provided with a connector, the primary tank is communicated with the pipe nipple through the connector, and the top of the pipe nipple is covered by the cover; and the primary tank is filled with water. Moreover, the method comprises the following steps: A. the amount of heat of the LED luminous component is transmitted into the water in the perfusion sealed container, and is stored by the water; and B. the amount of heat is removed through dissipation of the outer wall of the perfusion sealed container. The method has the advantages that the method has reasonable design, makes the best use of the greater specific heat and heat accumulation function of the water through a water tank for radiating, can fully control the temperature of the LED luminous component in a required temperature range, remedy the dissipation defect of a fin, and prolong the service life of the LED luminous component.

The invention relates to a boron carbide nuclear neutron absorbing material and a preparation method. The preparation method comprises the following steps: putting the three raw materials including 85percent by weight to 98.5 percent by weight of boron carbide powder (nuclear-grade powder), 1 percent by weight to 5 percent by weight of solid phase sintering additives and 0.5 percent by weight to10 percent by weight of liquid phase sintering additives into a ball mill mixing container; adding a polymer material as a soft template and adding deionized water to perform balling milling and pulping to obtain the slurry, wherein the solid phase content of the slurry is 40 percent by weight to 70 percent by weight; processing the slurry by using a spray drying granulating machine to obtain granulating powder; pressing the granulating powder by adopting the processes of dry pressing molding or cold isostatic pressing molding under the pressure of 50MPa to 300MPa to form green bodies; and putting the green bodies into a vacuum furnace, keeping a temperature for 0.5 hour to 5 hours under the temperature of 2000 DEG C to 2300 DEG C by adopting a vacuum or constant-pressure sintering way soas to complete sintering to obtain boron carbide ceramics. The boron carbide nuclear neutron absorbing material and the preparation method disclosed by the invention have the advantages that by usingthe boron carbide nuclear-grade powder as a raw material and the polymer material as the soft template, the boron carbide nuclear neutron absorbing material is prepared; the boron carbide nuclear neutron absorbing material has the advantages of low cost, batch production, low free carbon content and high neuron absorption efficiency, is suitable for preparing large-sized protection parts with complicated shapes, and has good application prospect in small nuclear reactor outer-layer protection and other types of nuclear reactor protection.

The invention discloses a sand control agent and a preparation method thereof. The sand control agent is prepared by carrying out polymerization reaction on 30-80 parts by mass of polyol and 20-70 parts by mass of diisocyanate, and the sand control agent also contains the following components in parts by mass: 0.01-1 part of catalyst, 0.5-3 parts of coupling agent and 0.1-5 parts of chain extender. The sand control agent disclosed by the invention is water-permeable and air-permeable, and has no influence on the seedling emergence and normal growth of plants; the sand control agent is sprayed on the wet surface of a sandlot after plant seeds are sown on the sandlot and watered; and after 5-7 days and seedling emergence, the sand control agent is gradually solidified to form films, thus the sand grains on the surface are prevented from moving due to wind force, a large amount of water evaporation is prevented at the same time, and the normal growth of the plants after seedling emergence is guaranteed.

The invention relates to a method for the controlled evaporation of a liquid drop (2) in a closed or confined type microfluidic device (1), enabling the concentration of analytes possibly present in the drop (2) to be increased.According to the invention, a drop (2) and / or a bubble (4) are brought into contact with each other, said contact enabling the drop (2) to evaporate in the bubble (4).

According to the invention, a modular storage system for laboratory fluids is characterized in that a carrier frame comprises a defined number of slots for at least two different laboratory vessel inserts, which can be inserted so that they can be arbitrarily interchanged and inserted in arbitrary combinations with a positive fit in the slots of the carrier frame and which each comprise at least one laboratory vessel and / or at least one compartment for at least one laboratory vessel.

The invention provides a wetting dust sticking material, which is used for coal mine dust reduction. The wetting dust sticking material is prepared from the following raw materials in percentage by weight: 0.5 to 5 percent of secondary alkane sulphonate sodium, 0.1 to 0.5 percent of hydroxypropyl methyl cellulose, 0.1 to 0.3 percent of synergistic ions, 0.05 to 0.2 percent of humectants and the balance of water. The wetting dust sticking material can be prepared from mixed water solution of secondary alkane sulphonate sodium, hydroxypropyl methyl cellulose, synergistic ions and humectants by using conventional stirring equipment at normal temperature; the wetting dust sticking material can be sprayed onto a dust source to control the generation of dust, and can also be spraying the dust-containing air to settle the dust in the air so as to control the generation and the diffusion of the dust. The used raw materials do not have toxicity, and can be naturally degraded; green and environmentally friendly effects are achieved. A dust inhibitor can achieve the effects of reducing the dust reduction water consumption, improving the dust reduction efficiency and saving water resources, and has wide practicability.

The invention relates to a high-strength aluminum alloy composite plate for a surface plate of a brazing honeycomb plate, a core material, wrapping layers and a surface material. The high-strength aluminum alloy composite plate comprises the surface material, a first wrapping layer, the core material and a second wrapping layer, which are overlapped in sequence, wherein the thickness of the composite plate is 0.5-2.5 mm; the surface material is a 4-series aluminum alloy; the mass content of Si is 4.5-11%; the first wrapping layer and the second wrapping layer are both made of a 1050 aluminum alloy with an Si element; the mass content of Si is 0.7-0.9%; the core material is a 6-series aluminum alloy; and the solidus temperature of the core material is higher than or equal to 580 DEG C. Due to adoption of the high-strength aluminum alloy composite plate for gas carrier brazing, the core material, the wrapping layer and the surface material, the strength can be maintained when the weight of the composite plate can be reduced, in addition, the surface plate of an Mg-containing aluminum honeycomb plate can be applicable to gas carrier brazing, the production efficiency of brazing can be improved, and the production cost can be lowered.

The invention discloses galangal fruit and vegetable fresh-keeping agent and the preparation method thereof, which belongs to the field of preparative techniques of film coating agents. The galangal fruit and vegetable fresh-keeping agent is prepared from galangal liquid as raw material. The preparation method comprises the following steps: decocting galangal in water sufficiently to obtain medicinal ingredients; filtering the obtained medicinal liquid, cooling, and storing; and blending the galangal medicinal liquid with bleached lac to coating. The utility model has the benefits that the galangal fruit and vegetable fresh-keeping agent is coated on the surface of fruit and vegetable and has good fresh-keeping effect. The galangal fruit and vegetable fresh-keeping agent has low cost, is environment-friendly, and protects the benefits of fruit growers; and the market is exploited.

The invention belongs to the field of building waterproof coatings and particularly provides a dual-component silicone-acrylic anti-cracking waterproof coating and a preparation method thereof. According to the dual-component silicone-acrylic anti-cracking waterproof coating, on the basis of a traditional JS waterproof coating, the high-temperature anti-cracking performance, the low-temperature anti-cracking performance, watertightness, anti-permeability, tensile strength, bonding strength and other performance of materials are remarkably improved while cost is reduced; the I-type solid content is larger than or equal to 70%, the tensile strength is larger than or equal to 4.8 MPa, the elongation at break is larger than or equal to 350%, watertightness is achieved for 160 min at the pressure of 0.4 MPa, no crack (phi 10mm rods) exists at the temperature of -40 DEG C according to low-temperature flexibility, and no crack exists during construction in the environment of the temperature of 45 DEG C according to high-temperature flexibility.

The invention discloses a modified soil water-saving drought-resisting nitrogen fixation fertilizer of organics, which comprises the following parts: 10-60% coal, 1-5% charcoal and 35-85% charring straw. The invention increases capillary porous soil and capillary porous water, which utilizes rainfall completely to adsorb free nitrogen and ammonia in the soil.

The invention relates to a preparation method of a composite concrete curing agent, and belongs to the technical field of concrete curing agents. A heterogeneous polymerization system is adopted, carboxymethyl cellulose is used as a matrix to graft acrylic acid monomers, a composite emulsion is prepared as a raw material of the composite concrete curing agent, water glass, urea and sodium methylsilicate are added, and the composite concrete curing agent with good water retention rate is prepared; the sodium methylsilicate has hydrophobicity, and evaporation of water can be stopped to a certainextent, and the water glass is easy to react with free calcium oxide in cement and calcium hydroxide as a cement hydration product to form calcium silicate crystals, so that loss of water is prevented; and the surface becomes compact by Si-O of the sodium methylsilicate, the urea plays a role of a penetrating agent in a curing agent, so that water glass can be promoted to penetrate into a concrete surface layer, capillaries of the concrete surface layer are blocked, a compact surface layer is formed, moisture drainage is stopped, and cement in the concrete is fully hydrated.

The invention belongs to the technical field of chemical fiber and relates to a flame-retardant compound cellulose acetate fiber preparation method and application. According to the preparation methoddisclosed by the invention, reduced graphene is utilized to replace graphene oxide, so that the agglomeration phenomenon of graphene in a spinning solution is eliminated, breaking strength is improved by 5% to 30%, viscosity of the spinning solution is appropriately reduced, and spinnability of cellulose acetate is improved. Lewis acid is utilized to react with tripolycyanamide to generate trimerization ammonium salt, so that the problem that the tripolycyanamide cannot be dissolved into acetone is solved; furthermore, the prepared flame-retardant compound cellulose acetate fiber has an excellent flame-retardant effect. The flame-retardant compound cellulose acetate fiber prepared by the preparation method disclosed by the invention can be applied to the fields of wigs, fireproof clothesand the like. The preparation method disclosed by the invention has the advantages of moderate conditions, simple reaction processes and suitability for large-scale production.

The invention relates to the technical field of desert afforestation, in particular to a desertification control method. Transparent materials cover the surface of a desert in pieces and are fixed through stakes, the transparent materials are connected into blocks through ropes, thereby preventing the occurrence of large-area sand storm, preventing water from evaporating continuously while underground water is evaporated to the surface of the desert, and preserving the moisture of the desert; in rainy, snowy and foggy weather, because the surfaces of the transparent materials are flat and smooth, the water flows into the desert through gaps among the transparent materials, thereby preserving rainfall moisture; at night or in seasons with lower temperature, a transparent material layer becomes an insulating layer of the desert, thereby providing favorable conditions for the survival of tree varieties. The desertification control method has the advantages that after the formation of green vegetations of the desert is accelerated, the transparent materials can be recycled and used for next desert control, desert control is one-time investment, the required artificial maintenance is less, the formation of an organic layer of the desert is fast, and the ecology is stable.

The present invention provides a thickener for solving a problem of difficulty in swallowing and a preparation method of the thickener. The thickener is prepared from xanthan gum, maltodextrin, aloe vera extract freeze-dried powder, agar, edible gelatin, a pH value regulator, chitosan oligosaccharide, guar gum and potassium chloride as raw materials. All the raw materials are natural thickeners. Besides, the components completely cover animal thickeners, plant thickeners, microbial thickeners and enzyme treatment thickeners. The thickener for solving a problem of difficulty in swallowing is prepared by mixing, homogenizing and spray-drying, dissolvability is improved, and mouthfeel and a taking effect are improved. The thickener is added into liquid food, full stirring is conducted to enable food to be thicker and smoother, and water is prevented from choking the lungs. The thickener for solving problem of difficulty in swallowing has great help for people with dysphagia, such as infants, old people, patients and the like, and can eliminate esophageal edema, reduce inflammatory risks and repair esophageal cells.

The invention discloses a chlorine dioxide stabilizing medium, a preparation method, and disinfecting liquid prepared from the chlorine dioxide stabilizing medium. The preparation method comprises the following steps of mixing mesoporous TiO2 capsules with isopropyl alcohol and gamma-aminopropyltriethoxysilane, performing a reflux reaction at 70-90 DEG C, and enabling obtained modified nanometer TiO2 capsules to be dispersed in an alkaline solution so as to obtain suspending liquid I; mixing chitosan with the isopropyl alcohol and glycidyltrimethylammonium chloride, performing a reflex reaction at 70-90 DEG C, performing extraction with anhydrous ethanol, performing drying, and enabling the obtained chitosan quaternary ammonium salt to dissolve in an alkaline solution so as to obtain a solution II; and mixing the suspending liquid I with the solution II so as to obtain the chlorine dioxide stabilizing medium. ClO2 is led into the chlorine dioxide stabilizing medium, and a reaction is performed, so that the disinfecting liquid is obtained. The disinfecting liquid is safe and non-toxic, and can rapidly remove microorganisms on the surfaces of fruits and vegetables for preservation of the fruits and the vegetables.

The invention discloses an organic fertilizer capable of improving the heat resistance of plants and the absorption capacity of root systems. The organic fertilizer is prepared from, by weight, 36-38 parts of sesame meal, 18-20 parts of needle mushroom dregs, 1-2 parts of fumed silica, 2-3 parts of oxidized starch, 0.8-1.0 part of sodium selenite, 2-3 parts of potassium chloride, 2-3 parts of a paecilomyces lilacinus inoculant, 38-42 parts of rice straw, 28-30 parts of cinnamomum camphora leaves, 10-11 parts of a hydrogen peroxide solution with the concentration of 30%, 1.0-1.4 parts of trimethyl tetradecyl ammonium chloride, an appropriate amount of a sodium hydroxide solution with the concentration of 5 mol / L, an appropriate amount of an ethanol water solution with the concentration of 45% and an appropriate amount of water. According to the fertilizer, the adopted raw materials have the diverse types and can well contain various nutritional ingredients needed by plant growth; meanwhile, the nutrients are fixed near the root systems through fertilizer particles, and therefore growth of the root systems can be effectively induced; by adding the bacterium inoculant into the fertilizer, expansion of hyphae outside plant roots can be promoted, the effective absorption area of the root systems is increased, accumulation of the plants to nutrient substances is enhanced, the biomass is increased, and a positive promotion effect on yield increasement and quality improvement is achieved.