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237results about How to "Act as a slow release" patented technology

Microcapsule graphene composite material controlled-release pesticide-fertilizer granules and preparation method

The present invention relates to microcapsule graphene composite material controlled-release pesticide-fertilizer granules, which comprise mother powder, an inorganic nutrient, an organic matter, an anti-hardening agent and a filler, wherein the mother powder comprises a microcapsule graphene composite material and a pesticide active ingredient, the microcapsule graphene composite material is formed by compounding a polymer compound and graphite powder, and the polymer compound is at least one selected from gelatin, gum arabic, starch, chitosan, alginic acid, methyl cellulose, a carboxymethyl cellulose salt, poly lactic acid, polyamide and polyvinyl alcohol. The preparation method comprises: completely mixing pesticide and graphite powder, crushing, placing the obtained mixture and a polymer compound into a ball mill to grind, carrying out agglomeration, precipitation or polymerization to obtain a mixture of the microcapsule graphene composite material and the pesticide, drying to obtain mother powder, carrying out granulation on the mother powder, an inorganic nutrient, an organic matter and a filler, and spraying an anti-hardening agent on the particles so as to obtain the finished product. According to the present invention, the release is stable, and the problems of fertilizer applying and plant diseases and insect pests of the whole season can be solved with the applying of the granules one time.
Owner:广西金丝鸟农化有限公司

Charcoal-base polyaspartic acid slow-release urea as well as preparation method and application thereof

The invention provides charcoal-base polyaspartic acid slow-release urea. The preparation method comprises the steps of 1) charring agricultural waste which is taken as a biomass raw material at 400-600 DEG C to obtain porous charcoal particles; 2) carrying out a reaction between urea and formaldehyde to obtain a modified urea solution; 3) adding polyaspartic acid and derivative thereof to the modified urea solution; 4) soaking the charcoal particles in the mixing solution obtained from the step 3) for 3-10 hours, and drying the soaked charcoal particles; 5) implementing a reaction between starch and a sodium hypochlorite solution to obtain an oxidized starch solution which serves as a binder; and 6) adding the dried charcoal particles to the binder, pelleting and drying to obtain the charcoal-base polyaspartic acid slow-release urea. The preparation method disclosed by the invention is low in cost, and can relieve conversion from NH4+-N to NO3--N, inhibit rapid decomposition and loss of the urea, prolong fertilizer efficiency, improve nitrogen use efficiency and relieve non-point source pollution; results of field experiments show that the slow-release urea product disclosed by the invention can effectively increase both production and income, and can achieve a yield-increasing effect under a circumstance of reducing application of fertilizer.
Owner:CNSG ANHUI HONG SIFANG FERTILIZER IND CO LTD

Antibacterial and moldproof polymer modified spray asphalt waterproof paint and application method thereof

The invention provides antibacterial and moldproof polymer modified spray asphalt waterproof paint and an application method thereof. The paint is composed of a component A and a component B. The component A is prepared from, by weight, 90-120 parts of anionic emulsified asphalt, 40-90 parts of polymer emulsion, 0.5-5 parts of a thickening agent and 10-60 parts of filler. The component B is prepared from, by weight, 100 parts of water, 5-15 parts of a curing agent and 0.5-5 parts of an antibacterial agent. The invention further provides the application method of the antibacterial and moldproof polymer modified spray asphalt waterproof paint. The antibacterial and moldproof polymer modified spray asphalt waterproof paint has high ductility, high resilience and high adhering strength, is antibacterial and moldproof, excellent in low-temperature performance and high in construction speed and can be closely connected with a basic layer, and influences of deformation of the basic layer on the waterproof performance of a material can be effectively resisted; meanwhile, the situation that bacteria are bred on the surface of a coating film, and the coating function of a waterproof layer is damaged can be effectively prevented, and the possibility that an antibacterial agent has secondary pollution on water is reduced.
Owner:BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD

Vegetable seedling substrate

The invention discloses a vegetable seedling substrate. A substrate raw material comprises, by weight, waste fungi bags, perlite, remote mountain humus soil, puffed cow dung, pine tree barks, and a Chinese medicine residue; the Chinese medicine residue is a mixture including pine needles, Radix stemonae, Eupatorium adenophora, Dendrobiumnobile, liquorices, and Codonopsispilosula, wherein the mixture is obtained through high-temperature aerobic fermentation processing. The three-phase equilibrium (solids, liquid, and air) optimum environment which can ensure growth and development of plant roots and is required by vegetables, can be established through the specific substrate raw material which has good physical and chemical properties by means of the optimum proportion; the soil is fertile and the cost is low by adoption of the remote mountain humus soil; the Chinese medicine residue including ample organic matters and ample inorganic matters, and nitrogen, phosphorus, and potassium which are required by plant growth, can improve the fertilizer efficiency of the seedling substrate and can kill bacteria; vermiculite and the perlite can change the permeability and the volume-weight of the seedling substrate, can absorb effective constituents of the Chinese medicine residue, and can play the effect of sustained release.
Owner:WULONG DENGFENG SEEDLING CO LTD

Fertilization rod and using method thereof

The invention discloses a fertilization rod and a using method thereof. The fertilization rod is composed of a rod body and fertilizer. An opening is formed in the upper portion of the rod body. The bottom of the rod body is sealed. A plurality of thin holes are formed in one side of the rod body, and the interior of the rod body is filled with the fertilizer. The using method includes the following steps that the fertilization rod is inserted or wedged into soil around a water drip of a tree, the side with the holes faces the direction of a trunk, and the depth is commonly 20-30 cm. The fertilizer applying method is easy and convenient to operate, and the fertilization rod can be reused many times. Nutrients needed by plants are supplied in a full-thickness and full-time mode, the advantages of slow release, environmental friendliness and high fertilizer utilization rate are achieved, and the fertilization rod and the using method of the fertilization rod can be widely used for fruit trees, vines, ornamental trees and shrubs, potted flowers, bonsai plants and the like. Nutrient leaching loss is reduced, full-thickness and full-time nutrient supply is achieved, application is performed one time, and the fertilizer utilizing rate is increased. Labor force is saved, fertilizer invested cost is effectively reduced, the fertilizer utilizing rate is increased, and the effect of reducing nutrient leaching loss is especially obvious when the fertilization rod is used in sandy soil and soil low in organic matter content.
Owner:HEILONGJIANG ZHONGNONG XINXIN AGRI TECH DEV CO LTD +1

Special silicon containing compound fertilizer for paddy and preparation method of said fertilizer

The invention relates to the technical field of fertilizers, in particular to special silicon containing compound fertilizer for paddy and a preparation method of said fertilizer. The silicon containing compound fertilizer is prepared by mixing envelope slow-release urea with phosphatic fertilizer and potash fertilizer. The envelope slow-release urea is composed of a solid ball and an envelope layer wrapping the solid ball, the solid ball is the urea, and the envelope layer is mixture of silicon-calcium-magnesium fertilizer and binder. The total nutrient and the effective silicon content are 42-50% and 2-5% respectively in the silicon-containing compound fertilizer, and the mass ratio of N to P2O5 to K2O is 1:0.3-0.6:0.7-1. The special silicon containing compound fertilizer for paddy can meet needs of many elements for growth of the paddy, and in particular with remarkable increase of silicon, resistance to lodging and diseases and insects can be improved. By wrapping the urea to realize slow release, utilization rate of nitrogen fertilizer is increased, fertilizing times is decreased and labor cost is reduced. The preparation method is simple in preparation and controllable in processes, and raw materials for preparation can be easily obtained.
Owner:SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS +1

Large-dosage fly ash concrete and preparation method thereof

ActiveCN107602023AOvercome the defect of low early strengthHigh strengthCalcium hydroxideSodium Bentonite
The invention provides large-dosage fly ash concrete and a preparation method thereof. The large-dosage fly ash concrete is prepared from the following raw materials: cement, fly ash, mineral powder,gravel, river sand, water, a modified reinforcing agent and a polycarboxylate superplasticizer, wherein the modified reinforcing agent is prepared from bentonite, attapulgite, lignosulfonate, sodium sulfate, calcium hydroxide, triethanolamine maleate and water. The preparation method comprises the following steps: adding the cement, the mineral powder, the fly ash, the modified reinforcing agent,the gravel and the river sand into a mixer; performing dry mixing for 30-40min; adding the water and the superplasticizer into the mixer; mixing for 10-15min to obtain the large-dosage fly ash concrete. According to the large-dosage fly ash concrete and the preparation method thereof provided by the invention, a multifunctional modified synergistic for large-dosage fly ash concrete is prepared from the roasted bentonite together with attapulgite, organic and inorganic activators and a surfactant; by combining the multifunctional modified synergistic with an early-strength polycarboxylate superplasticizer, the aim of improving the strength, compactness and durability of the large-dosage fly ash concrete can be achieved.
Owner:南京平达绿色建材科技有限公司

Preparation method of cell membrane microcapsule simultaneously loaded with chemotherapeutic drug and photodynamic therapeutic drug

The invention discloses a cell membrane microcapsule simultaneously loaded with a chemotherapeutic drug and a photodynamic therapeutic drug. Human cells are selected as a raw material for preparing the cell membrane microcapsule; the obtained cell membrane microcapsule is soaked into a digitonin solution to improve the permeability of cell membranes; a chemotherapeutic drug namely doxorubicin hydrochloride and a photodynamic therapeutic drug namely indocyanine green are added sequentially to ensure that the drugs are infiltrated into the cell membrane microcapsule; and calcium ions are used for sealing the cell membranes to obtain the cell membrane microcapsule simultaneously loaded with the chemotherapeutic drug and the photodynamic therapeutic drug. The cell membrane microcapsule can generate active oxygen under the irradiation of laser light of 808nm, and the active oxygen and the chemotherapeutic drug act together to kill tumor cells, so that the cell membrane microcapsule is expected to be used for tumor treatment. The preparation method of the cell membrane microcapsule disclosed by the invention is simple, convenient and controllable, is high in production efficiency and has good application prospects.
Owner:ZHEJIANG UNIV

Fertilizer additive capable of enhancing immunity of crops and preparation method of additive

The invention discloses a fertilizer additive capable of enhancing immunity of crops and a preparation method of the additive. The additive is prepared from raw materials in parts by weight as follows: acrylic acid, starch, N,N'-methylenebisacrylamide, sodium naphthalene-1-acetate, an EM (effective microorganism) agent, dried cattle manure, saw dust of Melia azedarach, garlic straw, tobacco residues, attapulgite powder, corn bran, chaff, fresh ginger residues, itaconic acid, plant-sourced raw materials and a proper amount of water. The additive is resin particles containing liquid fermentation products and insect-resistant volatile substances of plants, main liquid fermentation products are produced by decomposing organic matters by the aid of microorganisms, most products are outer protecting substances such as antibiotics, toxins and hormone active ingredients, the immunity of the plants can be enhanced, threats caused by insects and diseases are avoided, extracted volatile ingredients of the plants have very good dispelling effects on insects of the crops, then resin is adopted for mixing, degradation of the resin can play a controlled-release role, and meanwhile, the resin is a very good protecting and storing unit for the active ingredients.
Owner:望江县东方米业有限责任公司

Artemisia pollen allergen vaccine and preparation method thereof

The invention provides an artemisia pollen allergen injection vaccine comprising artemisia pollen allergen and an L-tyrosine adjuvant, wherein the artemisia pollen allergen comprises sievers wormwood herb pollen allergen, sweet wormwood herb pollen allergen, and mugwort pollen allergen. The activity of the sievers wormwood herb pollen allergen is 1-1000AU/ml, the activity of the sweet wormwood herb pollen allergen is 1-1000AU/ml, and the activity of the mugwort pollen allergen is 1-1000AU/ml. The invention also provides a preparation method of the vaccine, and an application of the vaccine in preparing medicines used for treating anaphylactic diseases. According to the invention, three types of artemisia pollen allergen are adopted, such that the efficacy is higher than that of single artemisia pollen allergen. The artemisia pollen allergen is adsorbed onto the L-tyrosine adjuvant, such that an in-vivo release-retarding effect is provided, and efficacy and safety of the medicines are improved. The administration dosage of the vaccine during an entire treatment period is greatly lower (by approximately 100 times) than that of sublingual drops. With the vaccine, the treatment cost is greatly lower than that of sublingual drops immunological desensitization, such that patient burden of medical treatment is reduced.
Owner:北京新华联协和药业有限责任公司
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