9029results about How to "Improve water retention" patented technology

The invention discloses a masonry cement with high strength and water retention. According to the weight percentage, the masonry cement consists of 21-98.99 percent of porland cement clinker, 0-50 percent of blending materials, 1-12 percent of gypsum, 0.01-2 percent of cellulose ether and 0-15 percent of other additives. With the cellulose ether of high water retention material added, the water retention of the masonry cement is greatly improved. At the same time, through breaking through the limitation that the using amount of the blending materials in the original masonry cement is not less than 50 percent, the using amount of the blending materials is lowered to be 50 percent below to improve the strength of novel masonry cement. The strength of the prepared masonry cement is high, and the masonry cement with the strength grades of 12.5, 22.5, 52.5R, 62.5, 62.5R, etc. can be made. The hard problems of using low-grade blending materials to produce masonry cement with high water retention and using low- grade strength masonry cement of 12.5 and 22.5 to produce high-grade strength building mortar are solved.

A water-absorbing agent according to the present invention includes water-absorbent resin particles having an internal cross-linked structure,.wherein a vicinity of a surface of the water-absorbent resin particle is cross-linked with a surface cross-linking agent, and the water-absorbent resin particle has therein a sea-island structure having (i) part containing a first water-soluble multivalent metal salt such as aluminum sulfate and (ii) part not containing the first water-soluble multivalent metal salt. With this arrangement, it is possible to provide a water-absorbing agent having less water-soluble component content, more excellent liquid permeability, and more excellent water retention under pressure than the conventional water-absorbing agent.

The invention discloses a high nutrient compound selenium fertilizer comprising selenium, nuisanceless organic material-inorganic material and medium and trace elements, and a preparation method thereof. The high nutrient compound selenium fertilizer comprises 45-60 wt% of organic material, 55-35 wt% of inorganic material, 1-6 wt% of medium and trace elements, and 0.011-0.025 wt% of purified selenium. The fertilizer disclosed in the invention can increase yield efficiently, and allow the applied plant to contain selenium element which has health care effect to human body. The fertilizer adopts a plurality of internal adsorptions to protect selenium to let the selenium in the selenium fertilizer be effective, has good intermiscibility and degradability, keeps selenium from fix, and obviously improves the biological absorption utilization rate of selenium of plants (including tea).

The use of mixtures of two, three or more straight-chain 1,2-alkanediols, the chains lengths of which (i) are different and (ii) in each case are in the range of 5 to 10 C atoms, as antimicrobial active compounds is described. Compared with the pure 1,2-alkanediols, the mixtures have a synergistically intensified action.

A process for producing an ultrafine-milled whole-grain wheat flour which has the full nutritional value of wheat kernels, while retaining the texture of refined wheat flour and an appearance similar to refined wheat flour, and the products which can be made from the ultrafine-milled whole-grain wheat flour. The process can also be used for producing an ultrafine-milled coarse fraction, which can be used as a replacement and to fortify refined wheat flour. The ultrafine-milled coarse fraction can be used in bakery products, snack products and food products.

A sort of material used for sand-binding vegetation renewing which consists of plant cellulose, microelements, fertilizer, water-absorbable resin and sand. Rainfall can filter into the sand sufficiently to make sure that seed can germinate and grow while in sunny day sand crusts to prevent water from excess evaporation. It is suitable for migratory dune immobilizing and vegetation renewing. The contradiction between chemical sand-binding and vegetation growth can be settled by this material.

The invention discloses a liquid compound microbial fertilizer containing polyglutamic acid, and a preparation method and an application thereof, and belongs to the field of compound microbial fertilizers. Bacillus megaterium, bacillus thuringiensis and bacillus amyloliquefaciens are prepared into a bacteria liquid by liquid fermentation, and then the bacteria liquid is mixed with compound nutrients and a gamma-polyglutamic acid according to the mass ratio of 1:1:0.05-0.1 to be prepared into the efficient liquid compound microbial fertilizer. On the basis of good phosphorus dissolving capability of the bacillus megaterium, good insect resistance of the bacillus amyloliquefaciens and good organic matter degrading capability of the bacillus amyloliquefaciens, the purposes of more excellent fertilizer efficiency and lower water consumption are achieved under the characteristics of water retention, fertilizer preservation, and no environmental pollution of the gamma-polyglutamic acid, therefore, the scientific and reasonable matching of the compound fertilizers is formed.

The invention relates to a saline-sodic land reclamation and control method. Wide and deep research is long developed on the reclamation of saline-sodic land at home and abroad, and more focuses on engineering measures than applies biological techniques; although achievement has been made, some insurmountable difficulties still exist. The saline-sodic land reclamation and control method comprises the following steps: bulk deep loosening, applying soil deep loosening agents and saline-sodic soil improvement agents to deep loosening soil, purposefully and proportionally applying biologically organic fertilizer according to the composition of soil detected by adopting a nutrient balance method and a nitrogen phosphorus and potassium proportioning method which both comprise the following steps: subtracting soil nutrient-supplying amount from the fertilizer requirement of target yield, supplementing the balance through fertilizing, hathpace ridge forming, draining water and controlling salt, planting green manure-saline alkali tolerant high-yielding grass crop jerusalem artichoke to thoroughly improve the soil.

The invention relates to a wet-mixed mortar admixture as well as a preparation method and application thereof, and belongs to the technical field of building mortar. For solving technical problems, the invention provides the wet-mixed mortar admixture consisting of a material A and a material B, wherein the material A consists of the following components in percentage by weight: 0.8-2% of air entraining agent, 2-4% of retarder, 0.06-0.15% of anti-cracking agent, 0.6-1.2% of reinforcing agent, 0.3-0.7% of water retaining agent and the balance of water; the material B consists of the following components in percentage by weight: 3-12% of water reducing agent, 0.2-0.5% of shrinkage reducing agent and the balance of water. The wet-mixed mortar admixture disclosed by the invention is high in water reducing rate, environment-friendly, and can be used for improving the open time, workability and water retaining rate of mortar and improving the compressive strength and the bonding strength; by adopting a double-mixing manner of the materials A and B, the consumption of the material A or B can be effectively adjusted according to the performance of the mortar, and the performance of the mortar can be easily controlled.

The invention discloses a method for preparing organic fertilizer from paper-making sludge. The materials such as paper-making sludge, amendment are mixed, subjected to high-temperature aerobic fermentation, post maturation and crushing, screened, and mixed with fertilizer of nitrogen, phosphorus, potassium and the like and medium and micro elements to prepare the organic fertilizer. The method has the advantages of simple process, easy operation, obvious innocuous effect, no environmental pollution and little nutrient loss; and the organic fertilizer prepared by the method is widely applied to industrial crops such as vegetables, fruit trees, Chinese herbal medicines, flowers and field crops such as wheat, corn, paddy rice.

A contact lens of novel structure that can be produced with enhanced production efficiency and that has an enhanced water retainability on the lens surface so as to realize a superior wear feeling. At least one of convex lens anterior surface (12) and concave lens posterior surface (14) is provided with treated face (26, 28) having a periodic structure of minute projections and depressions of a size producing no tactile and visual effects during wear.

The invention provides a compound bio-fertilizer containing ardealite and application thereof. Compound bio-fertilizer is obtained through following steps: adjusting pH value of the ardealite to 4-5 via lime water, drying and crushing to 200-400 sections; drying animal manure, cutting crop straws into sections and then drying; mixing and fermenting the ardelite, the animal manure and the crop straws; controlling cultivation temperature to be at 28-32 DEG C after medium sterilization, sequentially inoculating various beneficial microorganisms, respectively cultivating the same, mixing mixed bacteria with prepared fermenting mixture by weight ratio of 1:300-1000 after completing cultivation, adding water to adjust water content to 35-45%, stirring the water , stacking the mixture for 3-5 days for co-fermentation, further adding water to adjust water content to 20-30%, and then crushing to obtain the compound bio-fertilizer. The compound bio-fertilizer is mainly applied to field crops and applied to improving saline-alkali soil, acid soil and coastal soil structures.

The invention discloses a nano-composite environment-friendly water permeable brick and a production method thereof. The nano-composite environment-friendly water permeable brick comprises a concrete bottom layer and a mortar surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the mortar surface layer are compounded to form an integrated structure; the concrete bottom layer is prepared from the following raw materials in parts by weight: 20-40 parts of cement, 10-20 parts of water, 5-15 parts of fly ash, 50-65 parts of recycled aggregate, 50-65 parts of natural coarse aggregate, 65-85 parts of sand and 0.05-0.2 part of water-reducing agent; and the mortar surface layer is prepared from the following raw materials in parts by weight: 70-100 parts of cement, 5-20 parts of nano-TiO2, 30-60 parts of water, 200-400 parts of sand and 0.1-1.0 part of water-reducing agent. The nano-composite environment-friendly water permeable brick disclosed by the invention is integrally formed and has the advantages of high compressive strength, high flexural strength, good water permeability and good water retention, and a ground surface laid by the nano-composite environment-friendly water permeable bricks can timely dredge and drain rainwater, is conductive to growth of surrounding vegetation and can effectively supplement groundwater, reduce the pressure of a municipal drainage system and reduce the influence of surface gathered water on the traffic; and the nano-composite environment-friendly water permeable brick has a photocatalytic self-cleaning function and can decompose and remove organic stains on the surface of the brick and beautify the urban environment.

The invention relates to a method for preparing a sodium alginate-chitosan nano-grade medical dressing, and belongs to the field of natural biological polymer materials. The method comprises the following steps: dispersing sodium alginate and synthesized polymer in an ethanol solution; and preparing a chitosan solution containing a crosslinking agent to serve as a receiving liquid, wherein fibers are cross-linked by the crosslinking agent after the sodium alginate fibers are received in the chitosan solution, the electrolyte property of the chitosan is adsorbed to the surfaces of the sodium alginate fibers due to the electrostatic effect, and the prepared sodium alginate-chitosan composite nano-fibers have good air permeability and antibacterial and hemostasis effects, is advantageous to wound tissue growth and regeneration when being applied to a wound dressing, and can be used for accelerating wound healing. The method adopts a natural polymer matrix as a raw material, and the medical dressing has low cost, no toxicity and good biocompatibility.

The invention discloses an organic / inorganic compound fertilizer taking biomass charcoal as a matrix, a preparation method of the organic / inorganic compound fertilizer and a preparation method of fine straw biomass charcoal powder, relates to a compound fertilizer, a preparation method thereof and a preparation method of biomass charcoal and aims to solve the problems that the compound fertilizer is high in raw material cost, poor in granulation, capable of causing straw resource waste and low in utilization ratio and the energy consumption in the production process of the fine straw biomass charcoal powder is high. The fertilizer disclosed by the invention is prepared from fine straw biomass charcoal powder, a nitrogen fertilizer, a phosphate fertilizer, a potassium fertilizer, bentonite, a binder and trace elements; the preparation method of the fertilizer disclosed by the invention comprises the steps: firstly, preparing biomass charcoal; and secondly, smashing and screening; and the preparation method of the fertilizer disclosed by the invention comprises the steps: firstly, weighting the fine straw biomass charcoal powder and other raw materials; secondly, pretreating an inorganic fertilizer raw material; thirdly, mixing; and fourthly, granulating and drying to obtain organic / inorganic compound fertilizer grains taking the biomass charcoal as the matrix. The preparation method of the organic / inorganic compound fertilizer is applied to the technical field of fertilizer production.

The invention discloses a method for preparing an Ag-carrying bacterial cellulose hydrogel antimicrobial dressing and a product thereof. The method comprises the following steps of: soaking a bacterial cellulose hydrogel film in solution of silver metal precursor; then heating the film to be between 121 and 135 DEG C in a high-pressure sterilizing pot, and pressurizing between 0.205 and 0.313MPa; standing bacterial cellulose for 5 to 30min; and then taking the treated bacterial cellulose out for washing, partial dehydration, packaging and sterilization to obtain an Ag-carrying bacterial cellulose hydrogel antimicrobial dressing which is formed by compounding silver metal nano-particles and bacterial cellulose and is attached with 0.01 to 10 weight percent of the silver metal nano-particles in a bacterial cellulose three-dimensional porous network structure. The preparation process of the invention has the advantages of simplicity, easiness, convenient operation, controllable preparation technology, no pollution and low cost; and the prepared nano-particles have the advantages of high purity, small particle size, uniform size and good dispersity. The obtained Ag-carrying bacterial cellulose hydrogel antimicrobial dressing has the characteristics of good antimicrobial property, high water content, good water-retaining property, strong toughness, good air permeability and the like, and can meet the requirements of treating various wounds by a wet method.

The invention provides heat preservation mortar, which comprises the bending ratios of components in a binding material and the bending ratios between the binding material and water. The binding material comprises the following components in weight percentage: 30 to 50 percent of vitrified micro bubble, 5 to 20 percent of ceramic sand, 1 to 5 percent of fly ash, 35 to 50 percent of ordinary Portland cement, 3 to 5 percent of wood fiber, 1 to 2 percent of hydroxypropyl emthylcellulose, 2 to 5 percent of re-dispersible emulsion powder and 0.4 to 0.5 percent of water reducing agent; and the weight ratio between the binding material and water is between 1:0.6 and 0.5. The light weight heat preservation mortar has the advantages of good binding property, good water-retention property, good anti-cracking property and good heat preservation and heat insulation property, and is applied to the laying and the plastering of wall materials; particularly the laying and plastering of steam-pressure air-entrained concrete bricks, the heat preservation and energy conservation effects are obvious.

The invention discloses a method for growing watermelons. The method includes the steps of processing seeds and accelerating germination, sowing and raising seedlings, applying base fertilizer on the whole land, transplanting the seedlings, performing field management, harvesting and the like. The method for growing watermelons is easy to operate, convenient to manage, good in growth vigor of watermelons, high in disease resistance, uniform in result nature and high in yield, the yield per mu can reach 4000 kg to 5000 kg, the watermelons are large, good in quality, high in sugar content, bright in flesh color, delicate in flesh and high in water content and commodity value, and therefore the method has great significance for increasing income of melon farmers.

Disclosed is an inorganic medicine, particularly modified montmorillonite, method for preparing the same and use thereof. The said modified montmorillonite means that dioctahedron of natural montmorillonite is not destroyed and basic chemical composition for the same is not changed, and the microstructure stacked from dioctahedron layer is changed to decrease the thickness of stacking layer and to expose and increase the end face charge and the interlayer charge of montmorillonite, thereby resulting in its lower degree of C axis order. The present medical use of montmorillonite is thus significantly strengthened, particularly the reversal treatment effect on chronic atrophic gastritis. Also disclosed are a medicine composition containing modified montmorillonite and the reversal treatment effect of natural montmorillonite on chronic atrophic gastritis.

The present invention utilizes fungal spore mass or hyphal fragments in burlap bags or sacks filled with biodegradable materials. The fungi may include saprophytic fungi, including gourmet and medicinal mushrooms, mycorrhizal fungi, entomopathogenic fungi, parasitic fungi and fungi imperfecti. The fungi function as keystone species, delivering benefits to both the microsphere and biosphere. Such fungal delivery systems are useful for purposes including ecological rehabilitation and restoration, preservation and improvement of habitats, bioremediation of toxic wastes and polluted sites, filtration of agricultural, mine and urban runoff, improvement of agricultural yields and control of biological organisms.

The present invention relates to high solid content vinyl acetate-ethylene copolymer latex for binder and the synthetic method, including 55 to 75 portion of vinyl acetate, 24 to 45 portion of ethylene, 3 to 5 portion of N-methylol acrylamide, 2 to 4 portion of PVA1788 and PVA0588, 0.4 to 1.0 portion of the compound of nonionic emulsifying agent nonyl phenol polyoxyethylene alkyl ether and anion emulsifying agent alkyl sulphate with 2:1 mixture ratio, 0.2 to 1.0 portion of 35 percents oxydol with 1:1 mixture ratio, 0.05 to 0.4 portion of formol zinc sulphate, 0.1 to 0.5 portion of ferrous sulphate, 0.5 to 1.0 portion of regular dodeca-carbon thiol-alcohol, 0.05 to 0.35 portion of potassium phosphate, 0.1 to 0.5 portion of sodium bicarbonate and 45 to 55 portion of de-ionized water. With the adoption of latex polymerization, low-residual monomer VAE latex with solid content more than 65 percents is synthesized, which is used as binder to be applied in timber processing industry and packaging industry.

The invention discloses a biostimulation method for remediation of oil-polluted soil. In the method, on the premise of not adding an oil pollutant biodegrading bacterial agent, a soil conditioner is added to improve the soil environment, reduce soil stickiness, increase the soil permeability, adjust the water-retaining capacity of the soil, adjust inorganic and organic nutrients necessary for local microbe growth, maintain the pH value of the soil close to neutrality, promote oil pollutant degrading microbes in the soil to grow and propagate, and improve the oil pollutant degrading efficiency of the local microbes; by planting plants, the microenvironment of the soil near root systems of the plants is improved, the plants secrete organics with low molecular weight such as amino acid to the root systems so as to stimulate the massive propagation of the local microbes and indirectly promote oil pollutant degradation by the microbes of the root systems; and the biostimulation method has the advantages of accelerating the remediation of the oil-polluted soil and restoring the original state of the soil.

The invention discloses a plant growth soil culture medium, which is composed of the following materials in percentage by weight: 30-32% of clay, 35-38% of organic matter, 19-25% of plant fiber, 3-6% of stabilizing agent, 0.035-0.085% of aggregate agent, 2% of fertilizer, 36-45% of clean water and 0.9-3.3% of seed. The invention also discloses a preparation method of the plant growth soil culture medium. The plant growth soil culture medium has the advantages of stable soil aggregate structure, water retention, fertilizer retention and good air permeability, and is suitable for plant growth. The preparation method is novel and convenient and has low consumption and operability.

The invention discloses a special grouting agent for post-tensioned prestressed concrete beams of highway bridges and culverts and a preparation method thereof. The grouting agent comprises the ingredients of a water reducing agent, a plastic expanding agent, an expanding agent, a flowing deformation assistant, a water-retaining agent, a retarder, a defoamer, a superfine active mineral admixture and the like. Low ratio of water to glue (0.26-0.28), high fluidity (the initial fluidity being equal to or less than 17s), no bleeding (free bleeding rate in 24hours being 0%) and early expanding (free expanding rate in 3hours being 0-2%) of grouting materials are realized after the grouting agent is added, so that quality reliability and durability of post-tensioned prestressed duct grouting areimproved, the problems of non-full and incompact grouting in duct grouting are fundamentally solved and the service life of prestressed concrete structure bridges is prolonged to realize a qualitative leap of the grouting material performance.

The invention relates to a poly-gamma-glutamic acid synergistic fertilizer for strengthening fertilizer effect, which belongs to the fertilizer field. The invention comprises graininess fertilizer which comprises the poly-gamma-glutamic acid. The contents of the poly-gamma-glutamic acid and fertilizer in weight are as follows: 0.01 to 1 percent of the poly-gamma-glutamic acid and the remained content is fertilizer. The contents of poly-gamma-glutamic acid of the invention are strictly controlled and the poly-gamma-glutamic acid can be conveniently fertilized. The poly-gamma-glutamic acid is combined with to make full use of the feature as absorption promoter of fertilizer of the poly-gamma-glutamic acid, therefore, crops output is further raised. The fertilizer is released slowly and prolonged by around 4 times compared with the traditional fertilizer in soil. The invention promotes crop absorption and inhibits fertilizer ingredient decomposition and loss, therefore, fertilizer use is directly decreased by more than 20 percent. The pollution to environment is reduced without excessive or inappropriate fertilization.

The invention relates to a biological organic fertilizer, and particularly relates to a biological organic fertilizer prepared by using mushroom bran as a raw material and a preparation method thereof. The biological organic fertilizer is prepared by mixing mushroom bran, humic acid, raw chicken manure and a composite bacterial agent according to weight parts, and performing fermentation. On a weight basis, the ratio of the mushroom bran, humic acid, raw chicken manure and the composite bacterial agent is 1:0.08-0.1:0.08-0.1:1 / 300-1 / 400. The fertilizer of the invention can eliminate biological pollution of the mushroom bran; nutrient substances of the mushroom bran are made full use of for the production of the fertilizer; no harm is caused to the environment; and the reutilization of resources is realized.

The invention relates to a preparation method of multi-phase gel foam for controlling the spontaneous combustion of coal. The multi-phase gel foam with multiple components of medium is made by adding a slight amount of thickener into the fly ash or the yellow mud slurry to form thickening mud with certain viscosity, adding certain amount of cross-linking agent and foaming agent into the thickening mud, and introducing nitrogen to carry out the physical and mechanical foaming. The bubble wall of the multi-phase gel foam has high viscosity and good elasticity, the fly ash or yellow mud adhere to the bubble wall, and the bubble is internally covered with nitrogen. The multi-phase gel foam is delivered to the mined-out area through the grouting pipeline of the mine, evenly covers the float coal in the mined-out area, and blocks the fractures of the coal body. The method can effectively hinder the oxygen absorption for goal and prevent the oxidization of the coal. The preparation method is simple, and the prepared multi-phase gel foam has low cost and significant effects on fire prevention and extinguishing; the preparation method does not only have the advantages of mud injection, nitrogen injection, two-phase foam injection, gel injection and composite gel injection on fire prevention and extinguishing, and also overcomes the deficiency, which has wide practicality.