34 results about "Capillary porosity" patented technology

The invention discloses a vapor chamber having support posts with an inner-sintering structure. The vapor chamber is characterized in that: upper cover plate sintering capillary wicks and lower cover plate sintering capillary wicks are arranged in a cavity between an upper cover plate and a lower cover plate, a plurality of support posts and a plurality of stress absorption rings having a sinking structure are distributed at the inner bottom of the lower cover plate, the upper cover plate sintering capillary wicks and the lower cover plate sintering capillary wicks are provided with a plurality of mounting holes through which the support posts penetrate; and a plurality of bosses which are naturally formed during sintering, and correspondingly matched with sinking positions of the stress absorption rings are distributed on the lower surface of the lower cover plate sintering capillary wicks. The vapor chamber has the advantages that: the stress absorption rings of the vapor chamber can effectively absorb deformation; the regional support post distribution eliminates the influence of the support posts on the enhanced boiling structure of the lower cover plate; capillary porosity wicks in the support posts shorten the refluxing path of liquid working medium in condensing section, separate raising vapor generated by enhanced boiling and reflux falling liquid working medium in the vapor chamber, avoid a shearing effect generated by the contact between a vapor interface and a liquid working medium interface and improve heat-transfer capability.

The invention provides an epoxy resin base layer treating agent used for spraying polyurea, comprising the following components in parts by weight: 20-65 parts of epoxy resin, 1-20 parts of reactive diluent, 10-50 parts of modified amine curing agent, 2-50 parts of toughening agent (curing agent), 0.5-5 parts of accelerator, 0.05-5 parts of high-performance assistant, 0-80 parts of mixed solvent and 0-80 parts of filler. The invention also provides a preparation method of the epoxy resin base layer treating agent. The polyurea has better strength and toughness after being cured to form a film and has good reinforcing and strengthening actions on concrete base material; capillary porosities and pinholes on the surface of the surface of the concrete base material can be effectively sealed; adhesive force between the concrete base layer and the polyurea is obviously improved; influence and attenuation on the polyurea and the adhesive force by environmental changes can be lowered; and polyurea prevention effect is improved.

The invention relates to an anti-cracking and anti-leaking cement which considers the portland cement as the raw materials. Meanwhile, it mixes 2.5%-41% by weight of Fe powder into the portland cement and blends uniformly. The added Fe powder with a certain proportion reacts with the air and water to make Fe expand swiftly. The produced powerful penetrability drives cement to automatically fill up the capillary porosity and crack to make the cement imperviousness and conquer the chap and aging of the beton and prolong its service life.

The invention relates to a terylene yarn with high moisture-transmitting property and a production method thereof. The terylene yarn is made by blended spinning of a straight-line section terylene fiber and a cruciform section terylene fiber. The production steps include (1) the straight-line section terylene fiber and the cruciform section terylene fiber are selected based on the ratio of fiber number; (2) the terylene yarn is produced after treatment of fiber strand and mixing. Number of inner capillary porosity and capillary wicking of the produced terylene are greatly increased and the moisture-transmitting property is obviously improved. The terylene yarn can be used for producing high moisture-transmitting fabric textile separately or together with other fiber yarn, thereby being widely applicable to fields of cloths, decoration and industry.

The invention relates to a high performance powder metallurgy bushing with low density and high strength, comprising the following chemical compositions by weight percent: Cu: 0.5-5%, C: 0.5-2%, Ni: 0.3-1.5%, Mo: 0.5- 1.5%, ZnS: 1-4% and the balance of Fe; the powder metallurgy procedure is applied with the following procedure: powder mixing-pressing-sintering-oil immersion-shaping to obtain finished products of bushing. The powder metallurgy engineering machine bushing product manufactured by the invention can bear high load in use, has bushing density as low as 5.8-6.5 g/cm<3>, high strength, a great deal of capillary porosities and 15-23% of oil content, and can remain excellent lubricity even on condition of bearing high load of 280kgf/cm<2>; the bushing has the advantages of low density, high strength, high oil content, great abrasion resistance and good self-lubricity, and is free of the phenomenon of clamping stagnation and burn and the like owing to excellent abrasion resistance of the product; in addition, service life of the bushing is up to over 10000h and maintenance cost is saved by 50%.

The invention relates to a tobacco fertilization method capable of conserving tobacco-planting soil. The tobacco fertilization method is characterized by comprising the following steps: a, fertilizing base fertilizer; b, transplanting; c, further applying seedling fertilizer; d, further applying potash fertilizer; and e, carrying out field management measures. By adopting the tobacco fertilization method capable of conserving the tobacco-planting soil, the volume weight, overall porosity, capillary porosity and aeration porosity of the soil are reduced, so that the capillary moisture capacity and moisture content of the tobacco-planting soil are increased, the quantity of microbes in the soil is increased, the pathogenic bacteria of tobacco bacterial wilt are reduced, and the yield, output value, average price and high and medium tobacco rate of tobacco are obviously improved.

The invention discloses a soil capillary porosity tester and a testing method thereof. The soil capillary porosity tester comprises a beaker, a ring cutter and a fixing frame; the lower end of the ring cutter is sleeved on a lug boss at the bottom part in the beaker, and one section of the bottom end closing to upper part is provided with the fixing frame, and the fixing frame is an annular structure, and an outer pillar face is closely pasted to the bottom part of the beaker, and the upper end face thereof is provided with a fixing screen made of elastic materials; the fixing screen is sleeved on the ring cutter, and the bottom part of the beaker is provided with a rough filter paper; the rough filter paper covers the whole bottom part of the beaker, and the top part of the beaker is covered with a ground glass piece.

The invention discloses a production method of a coal ash aerated concrete block with a waterproof agent sprayed on the surface. The production method includes that coal ash is adopted as a main framework material of the aerated concrete block, and power plant furnace slag, a water reducer and the waterproof agent are added, so that water consumption and water-material ratio are lowered, uniformity and compactness of the inside of aerated concrete are improved, capillary porosity is reduced, pore walls are more compact, pouring rest time is shortened, and strength is improved; a silane waterproof agent is added internally, so that water adsorption rate is lowered, antifreezing performance is improved, and inside structure of aerated concrete is more compact; a layer of waterproof liquid issprayed to the surface of the aerated concrete block after autoclaved curing and permeates into bricks to chemically react with a lot of free alkaline substances inside concrete to generate stable tendril crystal glue to become a part of the concrete, so that capillaries are closed and reduced, compactness of the concrete is improved, and damaging and corroding effect of the concrete is reduced.

The invention relates to a drug patch and equipment with heating and cooling functions, and belongs to the technical fields of make-up and skin care products as well as medical equipment. The drug patch and equipment are utilized for nursing or treatment of the chest, abdomen, face, elbow joints, knee joints and several other parts of a human body. The equipment comprises the drug patch, a heating and cooling device, a DC power supply device, a feeding device and an intelligent control device, wherein the drug patch comprises two or more layers of closed film bag-shaped patches; closed channels are formed in the drug patch; a quick connector B is arranged at the lower end of the drug patch; tiny capillary porosities are formed in both the closed channels and the closed film bag-shaped patches; a drug can be separated out through the tiny capillary porosities, and permeate into a corresponding part of a user; a plurality of bulges are arranged on the drug patch and have a massage function, so that the drug using effect of the drug patch is improved. The drug path and equipment are rapid in cooling and heating, free of noise and low in energy consumption; through adoption of the drug patch, skin pores can be expanded or shrunk, so that the drug can be sufficiently absorbed, and the nursing or treating function of the drug can be more obvious.

The invention belongs to the field of chemical engineering, and relates to a preparation method of a water-retention and nitrogen-fixation slow release water-soluble fertilizer. The method comprises the following steps: preliminarily mixing a nitrogen fertilizer, a high-molecular material, a water retaining agent and a filler, adding above preliminarily mixed materials to a solid-liquid mixer, continuously stirring and mixing the preliminarily mixed materials, adding water and auxiliary agents at a constant stirring rate, carrying out preliminary kneading, adding the above obtained mixture to an extruding and kneading device, adding water, carrying out secondary kneading to prepare a paste, continuously sending the paste to a granulator, granulating the paste, drying prepared granules, sieving the dried granules, and packaging the sieved granules to obtain the final water-retention and nitrogen-fixation slow release water-soluble fertilizer. The high-molecular material polyacrylamide is effectively added to a chemical fertilizer in order to reduce soil erosion and effectively improve the soil structure, so the total porosity and the capillary porosity of the soil are increased, and the soil capacity is reduced, thereby soil granules and the pore structure keep stable. Polypropionamide substantially inhibits the loss of the nitrogen element and improves the nitrogen fertilizer utilization rate.

The invention relates to the technical field of oil and gas well trial production, in particular to a method for evaluating the physical property of a sand-gravel reservoir by using nuclear magnetic pressure physical property indexes, which comprises the following steps: S1, collecting the density [reo] m of drilling fluid of a tested oil well in a research area; S2, collecting the reservoir thickness H, the acoustic wave time difference [delta] t, the skeleton time difference [delta] Tma and the density of the oil testing layer section of the research area; S3, collecting the nuclear magneticpermeability k, the nuclear magnetic total porosity and the capillary porosity of the oil testing layer section of the research area; S4, constructing a nuclear magnetic pressure physical property index; S5, calculating to obtain a well testing flow coefficient kh/[mu] of the tested oil well; S6, carrying out assignment calculation on the coefficients [alpha], [eta] and [gamma]; S7: (1) substituting assignment of [alpha], [eta] and [gamma] obtained by a correlation coefficient R2 greater than or equal to 0.85 as an empirical coefficient of a research area into S4; and S8, calculating the nuclear magnetic pressure physical index of each potential layer of the new well A. According to the method, the nuclear magnetic pressure physical property index is checked through the tested oil well dynamic data, evaluation on the pore permeability characteristics of the sand-gravel reservoir before oil testing is achieved, and oil testing and fracturing layer selection work is effectively guided.

The invention discloses a hardened cement water cement ratio prediction method and system based on a cement microstructure image. The method comprises the steps of obtaining a to-be-predicted cement image; preprocessing the to-be-predicted cement image; inputting the preprocessed to-be-predicted cement image into a pre-trained convolutional neural network; and outputting a water cement ratio prediction value of the to-be-predicted cement image. According to the method, the microstructure image in the cement is directly used for estimating the water cement ratio of the hardened cement, the steps of analyzing and counting numerical indexes such as the capillary porosity and the like are avoided, the estimation process is simpler, and operation is more facilitated.

The invention relates to a method for monitoring vegetation water source conservation amount change. The method comprises the steps of acquiring global land total water reserve change data, rainfall,actual evapotranspiration, soil water reserve, snow melting amount, snow water reserve, surface water reserve, underground water reserve, water resource amount change amount, dry branch and fallen leaf layer interception amount, average natural water content, maximum water holdup and litter accumulation amount; preprocessing data, and calculating the vegetation canopy water storage variation; calculating interception variation of a dry branch and fallen leaf layer; calculating soil water storage variation; and determining the water conservation variable quantity according to the vegetation canopy water storage variable quantity, the dry branch and fallen leaf layer interception variable quantity and the soil water storage variable quantity. A traditional method for calculating the soil water storage capacity through the product of the soil layer thickness and the non-capillary porosity is abandoned, the soil water content remote sensing data provided by NASA is used for calculating thesoil water storage variable quantity, and new technical support and reference are provided for ecological restoration process, ecological effect evaluation and water conservation evaluation.

The invention relates to an improvement method for a soil structure of coastal dredger fills. The method is applied to a composite water solution of calcium nitrate and polyacrylamide, wherein the concentration of the calcium nitrate is 0.1-2.0g/L and the concentration of the polyacrylamide is 0.3-0.8g/L; the polyacrylamide is an anionic polyacrylamide solid with the molecular weight of 8-12 million. Aiming at the disadvantages of an existing improvement method for the soil structure of the coastal dredger fills, and aiming at improving a self-aggregate structure of the dredger fills, the formation of large aggregate particles of the dredger fills is promoted under the common effects of the calcium nitrate and a PAM (polyacrylamide) outer source additive through the bridging of PAM-Ca<2+>-soil particle positive ion bridge, so that the capillary porosity and the total porosity of the coastal dredger fills are increased.

The invention discloses concrete waterproof liquid, consisting of the following components in percentage by weight: 25 to 35 percent of sodium silicate, 10 to 20 percent of polycarbonate activated silica, 5 to 15 percent of sodium beta-naphthalene sulfonate formaldehyde polycondensate, 5 to 15 percent of water, 10 to 20 percent of stearic acid, 5 to 15 percent of titanium dioxide, 4 to 6 percent of sodium bicarbonate and 4 to 6 percent of mica. The concrete waterproof liquid is permeated into concrete through capillary pores of the concrete and reacts with calcium hydroxide in the concrete to form insoluble silica gel or tiny hydrate crystal which is filled into the capillary pores, so by the reaction, the calcium hydroxide content of the concrete is reduced, the silicate hydrate content is increased, the capillary pores are filled, the capillary porosity is reduced, the anti-permeability of the concrete is improved, the strength, the hardness and the density of the concrete are enhanced, erosion of harmful mediums to the concrete is effectively avoided, and the service life of concrete structures is prolonged.

The invention belongs to the field of coastal saline and alkaline land soil amelioration, and particularly relates to a method for planting energy grass or ornamental grass on coastal saline and alkaline land. The main improvement part of the method disclosed by the invention is that in an energy grass and ornamental grass plantation process, a compound biological ameliorant prepared by mixing vegetable waste, biochar and polypeptide preparations is added into a plantation hole. According to the method disclosed by the invention, since the compound biological ameliorant prepared by mixing thevegetable waste, the biochar and the polypeptide preparations is added into the coastal saline and alkaline land, a microenvironment around the coastal saline and alkaline land can be effectively improved so as to accelerate plant to grow and develop; the physicochemical properties of the coastal saline and alkaline land can be improved, volume weight is lowered, field water-holding capacity, total porosity and capillary porosity are improved, and meanwhile, the content of organic carbon is accelerated to improve; and soil microbial florae and ecological balance thereof can be improved, a soilgranular structure is accelerated to improve, and the soil fertility of the coastal saline and alkaline land is effectively improved.

The invention provides a reservoir micro-capillary porosity determination method based on a constant-pressure mercury injection experiment. The method comprises the following steps: 1) sampling and measuring reservoir communication porosity; 2) carrying out a constant-pressure mercury injection experiment, and drawing a constant-pressure mercury injection curve; and 3) determining the maximum mercury injection saturation. Through a constant-pressure mercury injection experiment, the porosity of the reservoir microcapillary can be rapidly obtained, and the method has the advantages of being visual, clear, convenient, rapid, high in practicability and operability and the like. The defect that the existing experimental method cannot be used for independently and quantitatively determining theporosity of the micro capillary tube is effectively overcome. When the porosity of the reservoir microcapillary is determined by adopting a constant-pressure mercury injection experiment method, theeffective porosity of the reservoir is also determined, and the application of the constant-pressure mercury injection experiment is greatly expanded. The determination result of the micro-capillary porosity can be applied to pore structure research, reservoir quality evaluation, shale reservoir volume method reserve calculation and other aspects of various conventional or unconventional reservoirs, and has wide application prospects.

Disclosed is a heat-dissipating device, which comprises a heat-dissipating plate; and the heat-dissipating plate is provided a cavity chamber used for containing the working fluid. A heat-dissipating plate is connected on a heat-absorbing plate and is used for sealing the cavity chamber; a capillary structure is formed in the cavity chamber, the capillary structure comprises a first capillary layer with a plurality of the first hollow cavities, and a second capillary layer with a plurality of the second hollow cavities; and the first hollow cavities are communicated with the second hollow cavities so as to contain the working fluid together. Compared with prior art, the plurality of the first and second communicated hollow cavities are arranged on the capillary structure of the heat-dissipating device, the size thereof is further bigger than that of the capillary porosities of the capillary structure, so as to lead the enough fluid to be contained into the cavities. Therefore, the corresponding gap is not necessary to be left by the first capillary layer and the second capillary layer; and the thickness of the heat-dissipating device can be controlled within a smaller range.

The invention provides a method for original soil greening of saline-alkali land through the root salinity control technology using weak-acidity ion exchange resin. The method includes the step of laying an infiltration layer which comprises weak-acidity ion exchange resin, peach shell activated carbon, white birch sawdust, rock wool, Chinese parasol bark and weathered coal. The method has the advantages that physical and chemical properties of soil in saline-alkali land are well improved, after three months, the soil non-capillary porosity of the middle of the main root of Chinese junipers is 3.14-4.21%, the soil non-capillary porosity of the lower portion of the main root of Chinese junipers is 3.17-4.15%, the soil salt content of the middle of the main root of Chinese junipers is 0.16-0.21%, and the soil salt content of the lower portion of the main root of Chinese junipers is 0.17-0.23%.