227results about How to "Will not precipitate" patented technology

The invention discloses electric flocculation method and device for recovering and processing desulfurized wastewater. The electric flocculation method for recovering and processing desulfurized wastewater comprises the following steps of: collecting desulfurized wastewater to enter an electric flocculation reactor, then, carrying out solid-liquid separation, recovering the separated clear effluent water in a clinker-flushing system of an electric power plant or directly discharging the separated clear effluent water, conveying the sludge to dewater in a mud-processing system, and returning the effluent water of the mud-processing system to a water intake system. Compared with the prior art, the electric flocculation technology is adopted to substitute a complicated chemical method for recovering and processing the desulfurized wastewater, can effectively remove pollutants in the wastewater, reaches a heavy metal processing rate up to 95-99 percent, a chlorine-processing rate over 80 percent and removal rates of ammonian, and the like over 90 percent, greatly shortens the processing time, improves the processing efficiency and saves the investment cost. Moreover, the electric flocculation processing device has small size, extremely small floor occupation, good environmental-protection performance and low cost without additional flocculating agents.

The invention relates to a bovine bone marrow peptide extraction method, which comprises steps of cleaning and breaking, digesting, discharging soup, hydrolyzing, filtering, concentrating and spray-drying. With the application of the extraction method disclosed by the invention, problems on the effective absorption and utilization of macromolecular protein in human body are effectively solved, and micromolecular transformation and extraction of the protein are achieved. Bovine bone marrow peptide, as a micromolecular peptide substance extracted from bovine bone marrow through biological enzymolysis, is extra-strong in activity of an essence ingredient, and the essence ingredient is quite easy for human absorption, so that human immunity can be comprehensively regulated. The bovine bone marrow peptide disclosed by the invention, as a quite clear nutrient substance, is free from chemical ingredients and hormones and is free from toxic and side effects to human body; the bovine bone marrow peptide can rapidly dissolve in water without stirring; a water solution of the bovine bone marrow peptide is represented as a clear and transparent liquid in white or light yellow, and the water solution is free from the precipitation of impurities or precipitates; and the bovine bone marrow peptide plays an important role in such physiological activities as human's growth, development, metabolism, reproduction and the like.

The invention discloses a reaction type flame retardant for soft polyurethane foam and an application, belonging to the technical field of the flame retardants. The reaction type flame retardant contains three components, namely a phosphorus-containing polyhydroxy compound, a halogen-containing polylol and a chain extender with two degrees of functionality. When the flame retardant is in use, the reaction type flame retardant can be directly added into polyether polylol and is good in compatibility with the polyether polylol, and the precipitation can be avoided. The polyurethane foam prepared by the reaction type flame retardant is lasting in flame retarding effect and further has the characteristics of low VOC (volatile organic compounds) and low atomization, the flame retarding effect can not be reduced after aging, and adverse impacts on physical properties of the foam can be avoided. The soft foam using the flame retardant has excellent flame laminating performance and great peeling strength, and is suitable for being used as an interior trimming material for automobiles and airplanes.

The invention discloses a compound bifonazole nano-emulsion spray preparation. The nano-emulsion spray preparation has the grain size of 1 nm to 100 nm and is formed by the following raw materials in mass percent: 30%-40% of surfactant, 3%-14% of cosurfactant, 5%-10% of oil phase, 0.8%-2% of bifonazole, 0.02%-0.1% of clobetasol propionate, 0.01%-0.2% of cinnamyl aldehyde and the balance of deionized water, wherein the sum of the mass percents of the raw materials is 100%. The compound bifonazole nano-emulsion spray preparation has multiple actions, such as fungicide, bactericide, anti-bacterial, anti-fungal, antiinflammation, itching relieving and the like, treats superficial skin fungous infection, fungous paronychia and candidal vulvovaginitis, and is also effective to external otitis and bacterial skin infection. The compound bifonazole nano-emulsion spray preparation prepared by a preparation method of the compound bifonazole nano-emulsion spray preparation has the advantages that: the activity of the three drugs is remarkably improved, the effect of sterilization and itching relieving is rapid, the recurrence is difficult, and the preparation method is simple, so that the compound bifonazole nano-emulsion spray preparation and the preparation method thereof have broad market prospects in the medicine field.

The invention discloses a flushing device for a mechanical seal of a centrifugal pump, and belongs to the technical field of centrifugal pumps. The flushing device comprises a flushing pipe connected to the centrifugal pump; the liquid feeding end of the flushing pipe is connected with the outlet end of the centrifugal pump; the liquid discharging end of the flushing pipe is connected with the mechanical seal of the centrifugal pump; the flushing device is characterized in that the flushing pipe is connected with a tubular filter, a pressure gauge and a throttling orifice plate; the tubular filter is close to the outlet end of the centrifugal pump; the throttling orifice plate is close to the mechanical seal of the centrifugal pump; a first stop valve and a second stop valve are arranged on the flushing pipe; the first stop valve is positioned between the outlet end of the centrifugal pump and the tubular filter; and the second stop valve is positioned between the pressure gauge and the throttling orifice plate. The flushing device can both achieve a good cooling effect on the mechanical seal and prevent particle impurities from being deposited on the sealing surfaces of movable and fixed rings, thus effectively protecting the sealing surfaces of the movable and fixed rings, relieving wear and enhancing the sealing effect; and therefore, normal and stable operation of the centrifugal pump is guaranteed.

The invention discloses a preparation method and application of a repair material for heavy metal cadmium polluted soil. The preparation method of the repair material comprises the following steps: (1) dissolving cellulose ether into water, and carrying out deoxidizing, so as to obtain a cellulose ether solution; (2) adding charcoal particles in absence of oxygen, and uniformly stirring; (3) adding a ferrous salt solution in absence of oxygen, and uniformly stirring; and (4) dropwise adding a sodium phosphate solution while stirring in absence of oxygen, and adequately stirring after the dropwise adding, so as to obtain cellulose ether stabilized supported nano-ferrous phosphate suspension liquid, namely the repair material for the heavy metal cadmium polluted soil. The repair material can be applied to the in-situ repair of the heavy metal cadmium polluted soil, is very small in solubility product, can be prepared for use in site and is convenient to implement, the secondary pollution is avoided, the preparation method is simple, the cost is low, the nutrients and moisture in soil are beneficially maintained, and the yield of crops is beneficially increased.

The invention relates to the technical field of PVC production filling materials and especially relates to a modification method of phosphogypsum for PVC material production. The method comprises mixing fresh phosphogypsum and quicklime until pH is in a range of 6-8 so that phosphogypsum free water content is reduced, carrying out heating treatment through a stirring heater, controlling the temperature in a range of 150-180 DEG C so that the fresh phosphogypsum is transformed into semi-hydrated phosphogypsum, adding paraffin into the semi-hydrated phosphogypsum so that phosphogypsum plasticity and rheological properties are improved and the dry phosphogypsum adsorbs water to form crystal water with an unstable structure, carrying out dry grinding and screening so that crystal water in the phosphogypsum is exposed, related content of phosphogypsum impurities in unit volume is reduced and phosphogypsum whiteness is improved, and carrying out stir-frying at a temperature of 180-200 DEG C so that a part of crystal water in phosphogypsum is lost. The prepared phosphogypsum is a mixture of semi-hydrated gypsum, III-type anhydrite and II-type anhydrite, has high rheological properties and plasticity and improves PVC quality.

The invention relates to an oyster peptide extraction method which comprises the following steps: washing, boiling, removing decoction, hydrolyzing, filtering, concentrating and performing spray drying. By adopting the oyster peptide extraction method, the problem of effectively absorbing and utilizing macromolecular protein by human bodies is effectively solved, and macromolecular protein can be converted into micromolecular protein and extracted. The oyster peptide provided by the invention is prepared by extracting animal protein in a pure natural biological enzymolysis manner, is free of chemical component or hormone, free of toxic or side effect on human bodies, and is a very pure nutrient substance. The oyster peptide can be rapidly dissolved in water without stirring, the decoction can be clear and transparent and is a white or light yellow transparent liquid, and no impurity or precipitate is separated out. The oyster peptide has a remarkable effect on improving the male sexual function.

The invention discloses a preparation method of a high temperature-resistant and high-insulation sealing glass. The preparation method has the advantages that silicon dioxide is used as a skeleton structure; by adding BaO (barium oxide) as a generating body of glass, the melting temperature of the glass is lowered, the heat expansion coefficient of the glass is adjusted, and the fluidity of the glass is improved; by adding Al2O3 (aluminum oxide), an AlPO4 (aluminium phosphate) unit can be formed in the glass, and a straight chain is changed into a network structure, so that the structure of the glass is stable, and the chemical stability is improved; by adding ZrO2 (zirconium dioxide), the chemical stability of the glass is favorably improved; by replacing one part of BaO by other divalent metal oxides, such as CaO (calcium oxide), the melting temperature of the glass is lowered, the expansion coefficient of the glass is adjusted, and the chemical stability of the glass is improved; by adding TiO2 (titanium dioxide), the glass has high and low dielectric constants, and the electric insulation property of the glass is improved; by adding As2O5 (diarsenic pentoxide) into the formation of the glass structure, the separating from the network skeleton of the glass is avoided; the sealing temperature of the sealing glass is 1000 to 1050 DEG C, and the heat expansion coefficient is 70 to 100*10<-7>/DEG C; after sealing, the high temperature and high pressure resistant properties are good, and the insulation property is excellent.

The invention relates to a methyl methacrylate-styrene copolymer containing fluoro-acrylate and a preparation method thereof. The copolymer is prepared from the following compositions in percentage by mass: 1 percent of monomers, 0.025 to 0.09 percent of sodium dodecylsulfate, 0.025 to 0.09 percent of polyoxyethylene nonyl phenyl ether, 0.09 to 0.15 percent of tetrafluoropropanol, 0.045 to 0.075 percent of normal butanol, 4.0 to 7.5 percent of water and 0.005 to 0.02 percent of initiator. The copolymer solves the problems of expensive fluorine materials and poor compatibility when fluorine-containing materials are used for improving the hydrophobicity of epoxy resin, and provides the method for synthesizing the copolymer containing the fluoro-acrylate. The method is simple and pollution-free, has low cost, and is a good method for preparing the copolymer containing the fluoro-acrylate.

The invention provides a solid state strip-type waterborne multicolor coating and a preparation method and coating method thereof; the coating mainly comprises cellulose, polyvinyl alcohol, white latex, titanium dioxide, talcum powder, lithopone powder, glycerol, ethylene glycol, calcium carbonate, sodium hexametaphosphate and pure water, etc.; after formulating, granulating, packaging and other procedures, the coating is prepared and coated through base processing, putty scraping, bottom coating brushing, medium coating brushing and multicolor coating surface spraying. The invention is rich in color, and convenient in operation, with strong stereoscopic decorative effect achieved by one step spraying.

The invention discloses a dispersible oil suspension agent for a low-melting-point compound and a preparation method thereof. The dispersible oil suspension agent is characterized by being composed of following substances in percentage by mass: 5%-25% of the low-melting-point compound, 10%-20% of an emulsifying agent, 2%-5% of a dispersant, 2%-5% of a thixotropic agent and residual amount of a solvent, wherein the low-melting-point compound is a compound with the smelting point of 25-70 DEG C. The product disclosed by the invention has good stability; a layering and precipitation phenomenon does not occur; solids are not separated out or the product is not frozen at a low temperature and the mobility is good; meanwhile, the energy consumption is low, the production efficiency is high and the physicochemical properties of the product are stable, so that the dispersible oil suspension agent is possibly prepared from a lot of the low-melting-point compounds.

The invention relates to a synergist used in 5% high-content avermectin emulsion in water. The synergist is a mixture of palm oil methyl methyloctanoate and palm oil methyl methyldecanoate, wherein the content of palm oil methyl methyloctanoate is 50-58% by weight and the content of palm oil methyl methyldecanoate is 42-50%. The synergist helps to keep the stability of the avermectin emulsion in water and enables the avermectin emulsion in water to give full play to effect. According to the 5% avermectin emulsion in water prepared by using the synergist, the palm oil C8-C10 methyl esters have extremely good synergy effect and help to improve the stability of the 5% high-content avermectin emulsion in water; and no avermectin is precipitated when the 5% high-content avermectin emulsion in water returns to form at normal temperature after subjected to cold storage at 0 DEG C or refrigerated at a low temperature. The synergist helps to greatly improve the control effect on insects after the synergist-containing 5% high-content avermectin emulsion in water is applied according to a conventional application method.

The invention provides a preparation method for a permanently-antistatic ionic-liquid high polymer master batch. The preparation method comprises the following steps: 1) adding high polymer monomer A, acid anhydride B and initiator C into a reaction vessel, introducing nitrogen for protection and carrying out a reaction at 65 to 250 DEG C for 3 to 8 h so as to obtain a segmented copolymer D; 2) adding 10 to 65 parts by weight of ionic liquid into 100 parts by weight of the segmented copolymer D, introducing nitrogen for protection and carrying out stirring at 65 to 250 DEG C for 1 to 5 h so as to obtain a segmented copolymer E; and 3) adding 70 to 99 parts by weight of the segmented copolymer E grafted by ionic liquid, 0.05 to 0.2 part by weight of anti-oxidant, 1 to 3 parts by weight of hydroxy silicone oil, 0 to 50 parts by weight of a filling material, 3 to 10 parts by weight of heat stabilizer and 3 to 5 parts by weight of silicone oligomer into an internal mixer, carrying out heating and uniform mixing under stirring and then carrying out extrusion and granulation so as to obtain the permanently-antistatic ionic-liquid high polymer master batch. The invention further provides application of the high polymer master batch in high-molecular materials. The permanently-antistatic ionic-liquid high polymer master batch has permanent antistatic performance and good compatibility with high polymer.

The invention relates to a high-build epoxy coal tar pitch anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps of: adding dimethylbenzene, n-butyl alcohol, butanone, coal tar pitch resin liquid, toughened resin, precipitated barium sulfate, silk mica powder, talc powder, a hoof-joint type rheological control aid, a coupling agent 01, a CibaEFKA3650 aid, an organic defoaming agent and poly organic carboxylate into bisphenol A type epoxy resin with medium molecular weight, stirring, dispersing at a high speed, and grinding into a component A; stirring phenolic ammonia, an accelerator, ethanol and a CibaTINUVIN 460 light stabilizer to form a component B; and uniformly mixing the component A and the component B in a ratio of 10:1. The high-build epoxy coal tar pitch anticorrosive coating has certain toughness, and has excellent adhesion, high microbial corrosion resistance, long construction operating period and certain light ageing resistance when applied to prestressed concrete cylinder pipe (PCCP) exterior walls.

The invention relates to flame-retardant polyester. The flame-retardant polyester has a structure as shown in a formula I which is described in the specification. In the formula I, each A' is independently selected from the group consisting of residues of diols; each B' and each B'' can be the same or different and are independently selected from the group consisting of residues of saturated or unsaturated anhydrides or acids; C' and C'' can be the same or different and are independently selected from the group consisting of residues of hydrogen and epoxy acrylate compounds under the limiting condition that C' and C" can not be hydrogen simultaneously; a is an integer in a range of 1 to 30; b is an integer in a range of 1 to 30; c is an integer in a range of 1 to 15; and the flame-retardant polyester has an acid value of 20 to 40. The invention also relates to a method for preparing the above-mentioned flame-retardant polyester and a composition containing the flame-retardant polyester.

The invention discloses tyrosinase inhibitor microemulsion as well as a preparation method and an application thereof, and belongs to the technical fields of foods, medicines and cosmetics. The microemulsion contains a matrix, a tyrosinase inhibitor norartocarpetin and water, wherein the matrix comprises 40%-60% of surface active agent, 20%-45% of cosurfactant and 5%-20% of oil phase; and the microemulsion is prepared by adding raw components according to a certain ratio. The tyrosinase inhibitor microemulsion can be used for overcoming the defects that the solubility of the natural tyrosinase inhibitor norartocarpetin in water is extremely low. The method provided by the invention is simple to operate and can be used for the spontaneous formation of the microemulsion. Nanoscale microemulsion can be formed by using water or an aqueous solution for diluting the tyrosinase inhibitor microemulsion. The obtained microemulsion can be used for effectively resisting enzymatic browning of fruits and vegetables, and preparing whitening cosmetics and other medicines for preventing and treating human hyperpigmentation diseases and melanomas (caused by excessive melanin) needing to inhibit the activity of tyrosinase.

A preparing method of a highly-wear-resistant thermoplastic polyurethane elastomer is disclosed. The method includes 1) a step of preparing a mixture of polyester diol and 1,4-butanediol, namely a step of mixing the polyester diol and 1,4-butanediol according to a weight ratio of 100:15-100:40, adding a trace amount of silicone oil into the mixture, fully stirring the mixture at 80-90 DEG C for 0.5-1 h to obtain the mixture of the polyester diol and the 1,4-butanediol; and 2) a step of mixing and reacting the mixture obtained in the step 1), 4,4'-diphenylmethane diisocyanate the weight of which is 50-90% of the weight of the mixture, and a trace amount of a catalyst that is stannous 2-ethylhexanoate to obtain the polyurethane elastomer. The objective of the invention is to provide the highly-wear-resistant thermoplastic polyurethane elastomer which has low oil and powder exudation rates, good basic wear resistance and a low auxiliary agent exudation rate and the preparing method thereof.

The invention discloses a method for preparing hydrogen peroxide. The hydrogen peroxide is prepared by hydrogenating, oxidizing and extracting working solution prepared from alkyl anthraquinone and an organic solvent. The method is characterized in that: the working solution is prepared from ethyl anthraquinone, amyl anthraquinone, tetrahydro amyl anthraquinone, tetrahydro ethyl anthraquinone and the organic solvent; the total anthraquinone accounts for 16 to 30 mass percent of the working solution; the total ethyl anthraquinone accounts for 46 to 75 molar percent of the total anthraquinone; the total amyl anthraquinone accounts for 25 to 54 molar percent of the total anthraquinone; the molar ratio of the tetrahydro ethyl anthraquinone to the ethyl anthraquinone is 0.26-2.67:1; and the organic solvent is mixture of arene and trioctyl phosphate, mixture of heavy aromatic and tetra-n-butylurea or mixture of the heavy aromatic, the trioctyl phosphate and the tetra-n-butylurea. Compared with the prior art, the method has the advantages of simplicity, convenience in operation, safety, readily available raw materials, low cost, high productivity and no environmental pollution, and is a hydrogen peroxide production process with extremely high industrial production value.

The invention discloses a tyrosinase inhibitormicro-emulsion and a preparation method and an application of the tyrosinase inhibitor micro-emulsion, and belongs to the technical fields of foods, medicines and cosmetics. The micro-emulsion comprises a ground substance, tyrosinase inhibitors including steppogenin and artocarpanone, and water, wherein the ground substance comprises 45%-60% of surfactant, 20%-30% of cosurfactant and 10%-30% of oil phase. The micro-emulsionis prepared from various materials according to certain ratios. The defect of extremely low solubility of the tyrosinase inhibitors including steppogenin and artocarpanone in the water is overcome, the method which is simple in operation and can spontaneously form the micro-emulsion is provided, and the water or an aqueous solution is used for dilution so as to prepare the micro-emulsion with nanoscale grain size. The prepared micro-emulsion can be effectively used for preventing enzymatic browning of fruits and vegetables, preparing skin whitening cosmetics, preventing and treating chromatosis diseases and melanoma of a human body that are caused by excessive melanin, and preparing other medicines requiring inhibition of the tyrosinaseactivity.