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7738results about How to "Stable in nature" patented technology

Moisture-preserving nutritious soil for growing herbaceous flower seedlings and preparation method thereof

The invention belongs to plant nutritious soil and a preparation method thereof and particularly relates to flower nutritious soil and a preparation method thereof. The flower nutritious soil contains the components of biomass water-retaining agent, turf, sapropel, black soil, corn straw, perlite, meerschaum, deer feces, fine sand, inorganic fertilizer, and the like and is processed by the steps of raw material selection, crushing, screening, disinfection, mixing, pH regulation and the like. By adopting the method of mixing organic materials and inorganic materials, the flow nutritious soil has the advantages of reasonable and loosened structure, complete nutrients, stable property, easily obtained raw materials, easy processing and low cost. In addition, the biomass water-retaining agent contained in the flow nutritious soil is a novel, multifunctional and natural macromoleclar polymer and has a three-dimensional space reticular structure, not only can absorb water and fertilizer, but also can retain water and fertilizer, and. the water absorbing capacity of the flower nutritious soil is more than 1000 times the weight thereof, a small reservoir of water and fertilizer is formed in the soil, and the water and the fertilizer are slowly released, thereby the flow nutritious soil has the functions of saving both water and fertilizer. The invention can be used for growing seedlings and planning seedlings.
Owner:NORTHEAST NORMAL UNIVERSITY

Protective agent of coal tar hydrogenation catalyst and preparation method of protective agent

The invention discloses a protective agent of a coal tar hydrogenation catalyst and a preparation method of the protective agent. The protective agent is composed of three parts, namely carriers, active components and assistants, wherein the carriers include aluminium oxide and zirconium oxide in common; the active components include oxides of molybdenum, nickel or tungsten in common and account for 1-10% of total mass of the catalyst; the assistants include potassium and phosphorus in common, and account for 0.5-6% of total mass of the catalyst, and the balance is the carriers. The preparation method comprises preparation of the carrier and preparation of the protective agent. The protective agent has the advantages that the carrier comprises fine holes and thick holes, of which the apertures are relatively concentrated, wherein the thick holes are beneficial to containing metal impurities and carbon residue; a pressure drop of a catalyst bed is reduced, the hydrogenation catalyst is protected, removal of metal impurities such as vanadium is facilitated by the thin holes, the demetallization activity of the protective agent is properly improved, and different pore volumes and hole distribution of carriers can be prepared by adjusting the ratio of two pore forming materials. In addition, the preparation method of the protective agent is simple in technology, and convenient and stable to fabricate.
Owner:NINGBO JINYUANDONG PETROCHEM ENG TECH +1

Powder coating with antibacterial function and preparation method and application thereof

The invention discloses a powder coating with an antibacterial function and a preparation method and an application thereof. The powder coating comprises the following raw materials in the parts by weight: 60-90 parts of resin, 2-40 parts of curing agent, 1.5-10 parts of antibacterial agent color concentrate, 0.5-2 parts of flatting agent, 0-4.5 parts of defoaming agent, 4-30 parts of pigments andfillers and 0-15 parts of other auxiliary agents. The powder coating provided by the invention has the functions of bacterium resistance and broad spectrum and has strong functions of sterilizing andinhibiting various bacteria and mould fungi; the heat resistant temperature of the inorganic antibacterial agent can reach 500 DEG C, and the inorganic antibacterial agent has good heat stability; and the inorganic antibacterial agent is a silver ion antibacterial agent using glass as a carrier, has good transparency and can be made into a transparent antibacterial powder coating which has the advantages of safety and wide application range. The preparation method provided by the invention has reasonable processes, strong operability and high qualified rate of the prepared finished products and can realize industrial production in a large batch.
Owner:TIGER DRYLAC TAICANG

Method for preparing bifunctional modified cellulose adsorbing agent from peanut shells and application of method

The invention discloses a method for preparing a bifunctional modified cellulose adsorbing agent from peanut shells and application of the method. The method comprises the following preparation steps of: washing, drying and crushing waste peanut shells, which are taken as raw materials, and removing flavochrome, hemicellulose and xylogen from the crushed peanut shells so as to obtain peanut shell cellulose; and performing surface functional modification on the materials through substitution and amidation further so as to finally obtain the amino and carboxy bifunctional modified peanut shell cellulose adsorbing material. The product is powdery and light brownish yellow, and the particle size of the product is 1.5-2.5 microns. The bifunctional modified peanut shell cellulose adsorbing material has a good adsorption effect for excessive heavy metals such as copper, chrome and mercury, phosphate, methylthionine chloride dye, and the like in water. The adsorbing agent is simple in preparation method, low in cost, cheap, easily available, good in biological compatibility and environment-friendly, contains a great deal of functional chelation groups, can realize simultaneous adsorption and removal of negative ions and positive ions, and has the advantages of being recyclable and the like.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG

Preparation method for flexible and transparent composite ionic liquid gel conductive electrode

The invention relates to a preparation method for a flexible and transparent composite ionic liquid gel conductive electrode. In the composite ionic liquid gel conductive electrode disclosed by the invention, a polymer monomer and an ionic liquid monomer form a flexible and transparent polymer network framework, and the conductivity of the composite ionic liquid gel conductive electrode is improved by introducing a conductive nano material. The invention also discloses a preparation method of the composite ionic liquid gel for the flexible and transparent electrode. In the flexible and transparent composite ionic liquid gel conductive electrode provided by the invention, a flexible and transparent substrate is not required to beintroduced, the mechanical property is excellent, and the defects of poor adhesiveness, poor chemical stability of the substrate and low temperature resistance caused by poor matching of the substrate and a conductive thin film in the traditional flexible and transparent electrode technology are overcome; the preparation method has the characteristics of simplicity in process, low cost and long-term stability; and moreover, the resistance of the composite ionic liquid gel can be adjusted, and thus, the transparent electrode is particularly suitable for fabrication of a wearable electronic device, a flexible display screen, a solar cell, a thin film transistor and an organic electroluminescence (EL) panel.
Owner:BEIJING NATURE STONE SCI TECH DEVP

High-magnetic heavy-metal ion adsorbent carrying conductive high molecules and preparation method thereof

The invention discloses a high-magnetic heavy-metal ion adsorbent carrying conductive high molecules and a preparation method thereof. The adsorbent comprises high-magnetic microspheres carrying conductive high molecules, each of which comprises a Fe3O4 polycrystal sphere cluster, an amorphous SiO2 protective layer and a polypyrrole adsorption outer layer from inside to outside. The preparation method of the adsorbent is realized in a way that: carrying out a solvent thermal reduction reaction on soluble ferrites to obtain the Fe3O4 magnetic sphere cluster; carrying out the basic hydrolysis by using tetraethoxysilane to obtain the Fe3O4-SiO2 nuclear shell sphere cluster; and finally, carrying out the free radical polymerization reaction on the pyrrole monomers to obtain the Fe3O4-SiO2-polypyrrole functional particles. The heavy-metal ion adsorbent has the characteristics of stable property, high adsorption rate and reproducibility, has favorable adsorption and recovery properties on dichromic ions, and has the advantages of simple preparation process, low material price and no environmental pollution. Compared with the normal chemical absorbent, the product of the invention is convenient to use and achieves the effects of waste water treatment, pollution abatement and environment protection.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Preparation method of layer-by-layer self-assembled hollow fiber forward osmosis membrane

The invention discloses a preparation method of a layer-by-layer self-assembled hollow fiber forward osmosis membrane. The preparation method comprises the steps of: preparing hollow fiber forward osmosis base film, modifying hollow fiber ultrafiltration base film, repeating layer-by-layer assembly of polycation and polyanion layers, performing interface cross-linking polymerization for preparinga selective functional layer, conducting moisturizing, and carrying out treatment and storage so as to prepare the layer-by-layer self-assembled hollow fiber forward osmosis membrane. The surface of the hollow fiber self-support base film which is prepared by using a phase conversion method is activated firstly, layer-by-layer assembly of polycation and polyanion is repeated on the surface of thefilm so as to form an functional polarization layer for an electrolyte solution, and the polyamide selective layer is prepared through interfacial chemical cross-linking polymerization. The prepared hollow fiber forward osmosis membrane has a controllable thickness and an internal polarization layer with a high charge capacity, and the internal concentration polarization phenomenon can be alleviated effectively during the forward osmosis process; therefore, the hollow fiber forward osmosis membrane can simultaneously obtain high flux and low reverse salt flux, has high filtration separation efficiency, easy cleaning and a long service life, and can be widely applied to seawater desalination and concentration and desalination of brine.
Owner:西安金藏膜环保科技有限公司

Preparation method and application of magnetic silicon dioxide composite microsphere

The invention relates to a preparation method and application of a magnetic silicon dioxide composite microsphere. Superparamagnetic ferroferric oxide nano particles of which the diameter ranges from 4 nm to 30 nm are prepared through a high-temperature pyrolysis method, a silicon dioxide shell of which the thickness ranges from 5 nm to 20nm covers the outer surfaces of the magnetic ferroferric oxide nano particles through a reverse microemulsion method, amination modification is conducted on the silicon dioxide surface, glutaraldehyde is used as a crosslinking arm, ligand protein is connected into, and protein separation is conducted through specific binding of ligand protein and target protein. The prepared magnetic microsphere is small in particle diameter and good in monodispersity, the composite microsphere with amine is large in specific surface area, nucleophilic addition is utilized, after the crosslinking arm glutaraldehyde is connected into, multiple kinds of ligand protein can be connected into, and then multiple kinds of target protein can be separated. The method is suitable for rapid separation and application of protein in biological samples, and has wide application prospect and great application value in the biomedical field and other fields.
Owner:HARBIN YICAI NEW MATERIAL

Pharmaceutical formulations with the raw material containing panax, ophiopogon root and schisandra fruit, processes for their preparation, the raw material and the quality control method for the prepa

The present invention relates to a medicine preparation with raw material comprising gen-seng, RADIX OPHIOPOGONIS and schizan drin and relates to the methods of preparing and quality control of the invention as well as relates to the quality control method of the raw material comprising gen-seng, radix ophiopogonis and schizan drin. The present invention comprises saponins content of gen-seng, amylase content of gen-seng, saponins content of radix ophiopogonis and neolignan content of schizan drin. Each unit dosage of preparation comprises Rg1 and Re for 0.08 mg-12 mg, polysaccharide of gen-seng for 1mg-460mg, general saponins for 5 mg-800 mg and Schisandrin for 0.036mg-6mg. a medicine functioning as cooperation can be or can not be added in the present invention which can be any acceptable medicine preparation type comprising oral taking solid preparation, oral taking semi-solid preparation, oral taking liquid preparation and injection. The present invention also provides the quality control method of gen-seng, RADIX OPHIOPOGONIS and schizan drin as well as the quality control method of the present invention.
Owner:天津市轩宏医药技术有限公司 +1
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