22results about How to "Guaranteed long-term effect" patented technology

The invention relates to the technical field of wastewater treatment, in particular to a method for cooperatively treating petrochemical wastewater based on porous carbon and micro-nano bubbles, which comprises the following steps: S1, pretreating the petrochemical wastewater; s2, carrying out micro-nano aeration on the pretreated petrochemical wastewater by adopting a micro-nano bubble generation device to obtain aerated wastewater; s3, the aerated wastewater is subjected to adsorption treatment through modified porous carbon, purified wastewater is obtained, and the modified porous carbon is biomass porous carbon loaded with rose red ammonium tricarboxylate. According to the invention, through a cooperative treatment process of pretreatment, micro-nano bubble oxidation and modified porous carbon adsorption, efficient removal of multiple types of pollutants (including refractory organic matters, heavy metals and suspended particulate matters) is realized, the wastewater treatment efficiency is improved, and the operation cost is reduced.

The invention relates to the technical field of gray water dispersing agents, and discloses an efficient phosphorus-free gray water scale inhibition dispersing agent and a preparation method thereof.The efficient phosphorus-free gray water scale inhibition dispersing agent is characterized in that a green amino acid monomer is adopted for conducting carboxyl end capping on a prepared polyether long-chain monomer containing carboxyl and sulfonic acid groups so as to improve the biodegradability of a macromolecular polyether monomer, and the efficient phosphorus-free gray water scale inhibition dispersing agent is obtained through copolymerization with an acrylic acid monomer; the steric hindrance and hydrophilicity of the dispersing agent are enhanced; carboxyl and sulfonic acid groups of the aspartic acid terminated polyether alkenyl monomer can chelate iron ions, hydrophilic groups such as amino groups and ether groups enable the chelate to be dissolved or suspended in a solution, and the dispersing performance is good; active carboxyl and sulfonic acid groups in a molecular chain are chelated with Ca < 2 + > and Ba < 2 + >, and a polyethylene glycol alkyl long chain enables zwitterions to have a certain mutual repulsive interaction; the scale inhibition dispersant integrates scale inhibition and dispersion functions, is free of phosphorus in a molecular structure, is easy to degrade after being discharged, and belongs to an environment-friendly multifunctional scale inhibition dispersant.

The invention relates to the technical field of water treatment, and discloses a scale inhibition and dispersion agent for treating industrial circulating water and a preparation method thereof.The scale inhibition and dispersion agent is prepared from 2-[(2-aminoethyl) amino] sodium ethanesulfonate, p-hydroxybenzaldehyde, methoxy polyethylene glycol acrylate and beta-cyclodextrin as raw materials. Sodium alkenyl sulfonate long-chain cyclodextrin is obtained through reductive amination, addition and esterification and initiates copolymerization with acrylic acid and itaconic acid to obtain the scale inhibition and dispersion agent of a comb-type structure, and a chelate is dissolved or suspended in a solution through carboxyl, sulfo group and ether group in the structure of the scale inhibition and dispersion agent, so that the effect of effectively dispersing ferric oxide is achieved; polyethylene glycol long chains and beta-cyclodextrin have large steric hindrance and can be stretched, the probability that CaCO3 and BaSO4 crystals collide with each other can be reduced, salt ions and other molecules causing corrosion in a solution are difficult to get close to the metal surface, and the corrosion inhibitor has a good corrosion inhibition effect, is free of phosphorus and environmentally friendly and can be widely applied to an industrial circulating water treatment system.

The invention discloses a coating for cigarette packaging paper with tobacco fragrance as well as a preparation method and application of the coating. The coating is composed of a pigment, an adhesive, tobacco tar and a functional auxiliary agent, and the cigarette packaging paper with the tobacco flavor can be prepared by adopting an off-machine coating or in-machine coating method, a blade coating method, an air blade coating method, a metering rod coating method, a curtain type coating method or other film transfer coating methods. The tobacco tar is used for preparing the coating for the cigarette packaging paper, the cigarette packaging paper produced by utilizing the coating has the natural fragrance of tobacco, and due to the adsorption and slow release effects of pigments in the coating, the fragrance is long-acting and lasting; the adhesive in the coating solves the problem of moisture absorption of paper caused by use of tobacco tar, so that the paper has self-adaptive adjustment performance of'moisture retention and moisture retention '. The identification degree and the anti-counterfeiting function of the product can be improved by utilizing the color characteristics of the coating, so that the added value of the product is improved. The invention provides a new way for high value-added utilization of the tobacco tar.

The present application relates to a super-lubricating composite coating. In view of the current lack of super-lubricating materials and design methods for aviation engine lubricating oil environments, a super-lubricating composite coating for aviation engine oil and a preparation method thereof are provided. The inorganic particles are first surface-modified to improve the interfacial compatibility and wear resistance of the composite coating. The polyethersulfone emulsion is used as a binder to improve the bonding force between the composite coating and the substrate. The perfluoroethylene propylene copolymer emulsion and polytetrafluoroethylene can provide a lubricating phase to achieve a super-lubricating lubricating surface, and also have high chemical stability. The sequence of steps in the preparation method of the super-lubricating composite coating of the present application is conducive to the dispersion of the perfluoroethylene propylene copolymer emulsion and polytetrafluoroethylene, so that a uniformly dispersed and non-precipitated blended solution can be obtained. In addition, the super-lubricating composite coating of the present application can achieve self-stratification.

The invention provides a flame-retardant antistatic nylon fiber with a skin-core structure and a preparation method of the flame-retardant antistatic nylon fiber, and belongs to the technical field of nylon fibers. The flame-retardant antistatic nylon fiber comprises an antistatic nylon skin layer and a flame-retardant nylon core layer, the outer surface of the flame-retardant nylon core layer is coated with the antistatic nylon skin layer, the antistatic nylon skin layer comprises a nylon 6 matrix and an antistatic agent, and the antistatic agent is aniline modified zirconium phosphate; wherein the aniline modified zirconium phosphate is obtained by carrying out in-situ polymerization on aniline monomers between stripped zirconium phosphate layers. The flame-retardant antistatic nylon fiber is obtained through sheath-core composite melt spinning. According to the invention, the antistatic agent and the flame retardant are efficiently and stably introduced into the nylon matrix, and the synergistic effect of the antistatic agent and the flame retardant is realized, so that the fiber has better spinnability and mechanical property, and meanwhile, the long-term effect and durability of the function are ensured.

The invention discloses an amino acid water-soluble fertilizer and a production process thereof. The amino acid water-soluble fertilizer comprises the following components in parts by weight: 12-30 parts of nitrogen, 5-18 parts of phosphorus, 5-15 parts of potassium, 0.1-6 parts of sulfur, 20-24 parts of potassium fulvate, 6-8 parts of humic acid, 8-10 parts of amino acid, 0.1-0.5 part of a nitrification inhibitor, 0.01-0.2 part of trace elements and 200-300 parts of water. The amino acid and fulvic acid are doubly chelated with medium trace elements, the humic acid is used as a masking agent to produce the medium trace element chelate, the prepared amino acid water-soluble fertilizer is high in element utilization rate and can be degraded in the natural environment, meanwhile, the mixing efficiency of raw materials in the production process is high, and the production cost is low. Raw material agglomeration and non-uniform stirring caused by directly adding the potassium fulvate, the humic acid and the amino acid into the tank body are avoided.

This invention discloses a multi-layer composite antibacterial, breathable, and hemostatic skin dressing and its preparation method, belonging to the fields of medical dressing technology and knitting technology. The dressing of this invention has a multi-layer composite structure, formed by combining a tucked-loop perforated weft-knitted fabric and a non-woven fabric. The tucked-loop perforated weft-knitted fabric, through a combination of actions such as 1-3 perforation, needle turning, shaking, and staggered needle positions, forms a regularly distributed pore structure, enabling the dressing to have zero Poisson's ratio performance within the allowable strain range. The tucked-loop perforated weft-knitted fabric is modified with carboxymethylation and grafted with copper ions, while the non-woven fabric is made from hydrophilic yarn modified with carboxymethylation and chitosan quaternary ammonium salt. The multi-layer composite structure forms a gradient pore size, utilizing the Laplace pressure difference to achieve unidirectional active drainage of exudate. The dressing of this invention combines zero Poisson's ratio fit, gradient pore size drainage, dual-layer synergistic antibacterial properties, and rapid gel hemostasis, simultaneously meeting multiple needs of wound care and showing good application prospects.

This invention relates to the field of wind power equipment operation and maintenance technology, and in particular provides a wind turbine tower dent repair and reinforcement structure and its construction method. The reinforcement structure includes a lifting device for jacking out and repositioning the dented area of ​​the wind turbine tower until the inner diameter deviation meets the standard requirements; an inner reinforcing layer bonded to the inner wall of the wind turbine tower repair area; and an outer insulation layer disposed on the outer wall of the wind turbine tower repair area. This invention uses a lifting device to jack out and reposition the wind turbine tower repair area until the inner diameter of the wind turbine tower meets the standard requirements; maintains the pressure of the lifting device to bond the inner reinforcing layer to the inner wall of the wind turbine tower repair area, improving the out-of-plane stability of the wind turbine tower and preventing further denting; and coats the wind turbine tower repair area with an outer insulation layer to reduce the impact of thermal expansion and contraction by isolating external temperature differences, preventing the internally bonded inner reinforcing layer from detaching due to rapid temperature changes.

The invention discloses a mineral-based material capable of slowly releasing calcium and alkali, a preparation method of the mineral-based material and application of the mineral-based material in rice cadmium reduction, and belongs to the technical field of heavy metal polluted farmland soil remediation. The preparation method comprises the following steps: mixing metakaolin and a strong alkali solution to react I, removing supernatant after the reaction is completed, adding a calcium salt solution, oscillating to react II, and drying to obtain the mineral-based material capable of slowly releasing calcium and alkali. Calcium ions and basic ions are gradually dissolved and continuously released, the pH value and the structure of soil are improved, favorable conditions are created for plant growth, and the long-term effect of cadmium reduction is kept.

According to the floor drain, a first sealing piece is provided with a sealing cavity, a water passing hole is formed in the sealing cavity, an elastic sealing gasket used for blocking the water passing hole is installed on the water passing hole, and the elastic sealing gasket can elastically deform to open the water passing hole when subjected to external force from the outside of the first sealing piece; the water seal part is connected with the first sealing part, a water seal area and a drainage area which are communicated with each other are defined between the water seal part and the sealing cavity, and a drainage opening is formed in the bottom of the drainage area; the second sealing element is mounted at the water outlet, and the second sealing element can elastically move to block or open the water outlet; triple sealing is achieved through the elastic sealing gasket, the second sealing piece and the water seal so that the efficient deodorization and mosquito prevention effects can be achieved. Under the sealing action of the elastic sealing gasket and the second sealing piece, the evaporation speed of water vapor in the water seal area can be reduced, and the long-term effect of the water seal is guaranteed.

The embodiment of the present application relates to the technical field of heavy-duty coating, and discloses a marine facility corrosion protection layer regulation and control method suitable for strong salt spray environment, which comprises preparing a self-activated intermediate paint and applying it between a primer and a topcoat to form a composite protective layer; the core is that a double-triggered mineralization precursor is contained in the main agent of the self-activated intermediate paint, the precursor is composed of BF4 ‑ loaded hydrophobic modified zeolite and zinc phosphate coated water glass microparticles; when the coating is damaged, the corrosion microenvironment of the damaged area can synergistically trigger the zeolite to release BF4 ‑ to buffer the pH, at the same time trigger the dissolution of the coated water glass microparticles and release silicate ions; the released silicate ions react in situ with cations in the environment to generate mineralization products, plugging the damaged area. The present application can actively inhibit corrosion propagation and cathodic delamination after coating damage, significantly improving the long-term reliability and service life of the protective layer.

The invention relates to the technical field of polypeptide compounds, in particular to a stapled peptide compound, a preparation method and application thereof and a skin care product. The structural formula of the stapled peptide compound is shown in the specification. The polypeptide has high anti-enzymolysis stability, can significantly improve the expression ability of up-regulated fiber cells and promote the expression of collagen, and can be used in the fields of wrinkle resistance, aging resistance, repair and the like.

The invention relates to the technical field of fiber fabric preparation, in particular to an environment-friendly antibacterial anti-mite functional fiber fabric which is prepared through the following preparation steps that S1, all components are dried; s2, mixing the various fibers subjected to the drying treatment; s3, performing electrostatic treatment on the mixture; s4, carding the treated fiber mixture to form a fiber net with a stable structure; s5, performing hot pressing treatment on the fiber net to form a primary fabric structure; s6, performing low-temperature curing treatment on the fabric structure subjected to hot press molding; and S7, washing and softening the cured fabric to obtain a functional fiber fabric finished product. By using natural materials and optimizing the preparation process, the durable antibacterial and anti-mite effect is achieved, meanwhile, environmental friendliness and wearing comfort are ensured, and the high-standard requirements of modern consumers for healthy and comfortable life quality are met.

The application provides an antibacterial agent and a preparation method and application thereof, the antibacterial agent comprises two different repeating units; the structural formula of the antibacterial agent is or by adopting the technical scheme of the application, the antibacterial agent prepared by adopting a copolymerization method has excellent antibacterial performance and long-acting stability, and can meet the requirement of products on long-acting antibacterial performance of the antibacterial agent.

The application discloses a catalytic wet oxidation catalytic material and a preparation method thereof. The catalytic wet oxidation catalytic material takes acid modified montmorillonite loaded with copper oxide and optional nano ferrous sulfide as a matrix layer, and the outer surface of the matrix layer is wrapped with an active layer which is alumina loaded with nano ferrous sulfide; the matrix layer and the active layer are in a core-shell structure; the weight of the copper oxide accounts for 2-10% of the weight of the catalytic material, and the weight of the nano ferrous sulfide accounts for 5-20% of the weight of the catalytic material. The application further provides a preparation method of the catalytic wet oxidation catalytic material. The catalytic material has excellent catalytic degradation capacity for organic pollutants when used for treating organic wastewater.

The invention relates to the field of rice cadmium and arsenic reduction, and provides a slow-release compound for rice cadmium and arsenic reduction, preparation and application. The slow-release compounding agent comprises a selenium-based material, a calcium-based material and a silicon-based material, the mass ratio of the silicon-based material to the calcium-based material to the selenium-based material is (19-53): (13-47): (0.053-0.213), calcium selenite is selected as the selenium-based material, calcium oxide or calcium hydroxide is selected as the calcium-based material, and kieselguhr is selected as the silicon-based material. Wherein the calcium selenite is insoluble in water. The calcium oxide reacts with water to form water-insoluble calcium hydroxide, or directly comprises calcium hydroxide. In addition, the diatomite contains a large number of gaps and can adsorb calcium selenite, calcium hydroxide and selenium, calcium, silicon and other effective components dissolved out of the calcium selenite and the calcium hydroxide, so that the release speed of the effective components is further reduced, the diatomite can stably exist in the soil for a long time, and the long-term effect of reducing cadmium and arsenic is kept.

The invention discloses a planting method for effectively improving the survival rate of artificially planted trees in a stony desertification area. The planting method comprises the following steps: (1) selecting the stony desertification area; (2) selecting tree species suitable for being planted in the stony desertification region; (3) selecting proper planting density; (4) selecting proper planting time; (5) preparing bagged slow-release fertilizer before planting; (6) artificial planting: vertically putting tree seedlings into the planting pits, filling the planting pits with crushed soil, treading the planting pits tightly, then putting bag slow-release fertilizer around the tree seedlings to ensure that root systems of the tree seedlings are in contact with fertilizer bags, then covering soil, and finally covering a plastic film; (7) management after planting, including water management and pest control. By means of the planting strategy, the teak survival rate reaches up to 99.4% or above, and the afforestation efficiency is greatly improved. The method has immeasurable value for accelerating vegetation recovery in the stony desertification region and realizing local remarkable economic, social and ecological benefits.

This invention provides a sweet-scented black tea, relating to the field of fermented black tea preparation. It is obtained through a preparation process of withering, rolling, fermentation, and continuous light fermentation drying. Rolling involves cyclically rolling withered leaves using a light-heavy-light pressure method to obtain rolled leaves. Fermentation involves breaking up the rolled leaves and placing them in a fermentation chamber or fermentation machine for fermentation at a temperature of 28-30℃ and a humidity of not less than 90%, for 3 hours with stirring every hour to obtain fermented leaves. After fermentation, continuous light fermentation drying is performed to obtain the sweet-scented black tea. This black tea utilizes a specific tea-making process, namely, continuous light fermentation drying after fermentation by introducing a dry mixed gas. This achieves light fermentation during the drying process, allowing fermentation to continue throughout the entire drying process, improving the persistence of the fermentation process, avoiding excessive oxidation and fermentation of the tea sample, and ensuring the long-term and stable nature of the fermentation.

This invention relates to the field of wastewater treatment technology, specifically a method for treating high-salt organic wastewater containing polyenes and polyamines. This invention overcomes the problems of high toxicity of polyenes and polyamines, easy complexation with catalysts, and low biochemical efficiency under high-salt conditions in wastewater treatment. First, this invention utilizes copper-supported cross-linked chitosan to achieve specific complexation and sedimentation of macromolecules, significantly reducing toxicity. Then, it uses oxygen-rich vacancy titanium dioxide particle electrodes combined with ultrasound to efficiently break stubborn C-N bonds. Next, bimetallic catalytic ozone completely eliminates residual biotoxicity. Finally, iron-modified biochar provides a salt-resistant microenvironment and electron shuttle effect for salt-tolerant bacteria, achieving deep mineralization and denitrification of pollutants. This effectively solves the biochemical treatment problem under the dual stress of high salt and high toxicity, resulting in stable effluent quality.

The utility model discloses a kind of electric power cable with anti-insect bite structure, it is related to electric power cable technical field.The utility model includes outer sheath, the inner wall of outer sheath is fixedly connected with protective layer, the inner wall of protective layer is fixedly connected with wire core layer, the surface of outer sheath one side is equipped with anti-insect component, and the anti-insect component includes protective sleeve.The utility model fills anti-insect agent between the cavity between protective sleeve in anti-insect component and inner lining layer, can continuously release insect repellent component, effectively drives the insect approaching cable, simultaneously, the sawtooth strip on the surface of protective sleeve changes the physical structure of cable surface, so that insect is difficult to climb and adhere, further enhances the anti-insect effect, polyethylene agent layer in protective layer contains insect repellent component, can provide anti-insect protection from inner layer, and diatomite adsorption layer can adsorb the agent volatilized by polyethylene agent layer, prolongs agent action time, enhances the durability of anti-insect.

The present application discloses a recombinant humanized collagen that can self-assemble at low temperature and is long-lasting heat-resistant and stable, and its preparation method and application, and relates to the field of genetic engineering technology. A recombinant humanized collagen that can self-assemble at low temperature and is long-lasting heat-resistant and stable, the gene sequence of the recombinant humanized collagen is shown in Seq ID NO.19, Seq ID NO.20, Seq ID NO.21, Seq ID NO.22, Seq ID NO.23, Seq ID NO.24, Seq ID NO.25 or Seq ID NO.26. The recombinant humanized collagen of the present application has a low-temperature self-assembly property similar to that of natural collagen, and can form a stable collagen gel without the addition of a cross-linking agent or a gel excipient, and it has high stability and biological activity, is not easily denatured or degraded by high temperature, and has good in vitro resistance to collagenase hydrolysis and long-term effect in vivo.