62results about How to "Avoid reunion effect" patented technology

The invention discloses a nanometer Ag antimicrobial comprising nanometer Ag particle, a solubilizer, a water-soluble polymer, a plasticizer, a processing modifier, a solvent, a film-forming assistant, essence, pigment, distilled water or deionized water. The invention also disclosed a preparation method of the nanometer Ag antimicrobial. The preparation method comprises the steps of: adding the nanometer Ag particle into the distilled water or the deionized water, adding the solubilizer and the water-soluble polymer, and stirring to prepare a solution A; adding the plasticizer and the processing modifier (acrylate (ACR)) into the solvent, stirring, adding the film-forming assistant, and stirring to prepare a solution B; and adding the solution A into the solution B, adding the essence and the pigment, and stirring to obtain the nanometer Ag antimicrobial. The nanometer Ag antimicrobial disclosed by the invention has the advantages of strong adhesion on objects, good film forming property, good friction resistance and long-lasting antibacterial effect; and the preparation method has the advantages of simpleness and strong operability.

The invention relates to a nano composite diatom ooze coating including a solvent and the following components with the total mass of 100%: 0.5-1.8% of cellulose, 5-18% of tourmaline, 5-15% of titanium dioxide, 4-18% of kaolin, 5-12% of a sepiolite powder, 35-55% of diatomite, 5-12% of a nano noble metal loaded type catalyst, 1-6% of nano activated carbon, 0.5-0.8% of a levelling agent, 1.5-5% of a thickener, 7-16% of a re-dispersible latex powder, and 0-5% of a pigment. The solvent is preferably water, and the amount of the water is 20-30%, preferably 25%, of the total mass of all the components. Nano noble metal particles are loaded on a carrier firstly and then mixed with other powders, so as to prevent an agglomeration effect of the nano noble metal particles. The prepared nano composite diatom ooze coating has extremely strong adsorption and ion exchange, can adsorb formaldehyde in air, and decomposes formaldehyde and other harmful gases under the action of the catalyst.

The invention relates to a water-based double-component anti-doodling paint which is a double-component paint composed of a component A and a component B. The component A comprises the following components in percentage by weight: 15-35 wt% of water-based hydroxy polyacrylate dispersion, 15-35 wt% of organosiloxane-modified water-based hydroxy polyacrylic resin, 5-15 wt% of ultraviolet-resistant filler, 0.1-0.6 wt% of defoaming agent, 0.5-1.5 wt% of leveling agent, 0.5-2 wt% of anti-aging agent, 0.5-1 wt% of wetting and dispersing agent and the balance of water, totaling 100 wt%. The component B comprises the following components in percentage by weight: 60-80 wt% of hydrophilic modified aliphatic polyisocyanate curing agent and the balance of solvent, totaling 100 wt%. The ultraviolet-resistant filler is selected from rutile titanium white. The anti-doodling paint provided by the invention has the advantages of favorable water resistance, excellent aging resistance, high medium and pollution resistance and obvious self-cleaning action.

The invention discloses a preparation method for a silicon carbon composite material for a lithium ion battery negative electrode. The method comprises the following steps: primary ball milling: a step of adding a grinding aid into elementary silicon for ball milling; and secondary ball milling: a step of mixing silicon powder obtained after primary ball milling with carbon powder and adding a grinding aid for ball milling again. The mass content of the carbon powder is 20 to 80%. A discharge gas medium employed in the dielectric barrier discharge plasma assisted high-energy ball milling method is inert gas. According to the invention, silicon in the composite material prepared in the invention can be finely and uniformly distributed on a carbon matrix, effective refining of silicon can be carried out on the basis that the integrity of graphite sheets is ensured, reversible capacity of a battery is improved, the problems of volume expansion and poor conductivity of a silicon-based electrode are alleviated, and comprehensive performance of the lithium ion battery is improved.

The invention discloses a method for detecting deafness genes based on the surface enhanced Raman spectroscopy. The method includes immersing a single crystal silicon wafer subjected to decontamination into hydrofluoric acid, forming a silicon-hydrogen bond on the surface of the wafer, adding nitric acid to acquire a silicon surface enhanced Raman scattering substrate, conducting covalence on hairpin DNA tail end sulfydryl and silver nanoparticles to form an Ag-S bond to enable the hairpin DNA to be in covalent connection onto a silicon wafer modified by the silver nanoparticles, after aging, adding the deafness causing gene sequence to be detected to conduct complete hybridization to conduct the surface enhanced Raman scattering (SERS) detection. According to the method, the SERS silicon substrate assited by the hairpin DNA to conduct detection of the deafness causing genes in the entity, the Raman detection sensitivity is effectively improved, the detection line is reduced, and the method has high specificity and good reproducibility, and is simple in operation, low in cost and easy to popularize and spread.

The invention discloses modified nanoscale zero-valent iron and a preparation method and application of the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron comprises rhamnolipid and nanoscale zero-valent iron. The surface of the nanoscale zero-valent iron is modified through the rhamnolipid, and the mass ratio of the rhamnolipid to the nanoscale zero-valent iron is 0.1-2:1. The preparation method comprises the steps that a rhamnolipid solution and a ferrous sulfate solution are mixed, and a NaHB4 solution is dropwise added for a reaction to obtain the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron has the advantages of being good in dispersing performance, good in stability, high in reaction activity, high in permeability and the like, has the good stabilization efficiency for metal lead in bottom mud, brings no secondary pollution to environment, has a good application value, and has the wide application prospect in the technical field of bottom mud heavy metal pollution treatment.

The invention discloses a method for preparing a benzaldehyde catalyst prepared from heteropolyacid type benzyl alcohol. Nickel nitrate, a COF-1 nanometer material, citric acid, phosphotungstic acid,dioxane, mesitylene, glacial acetic acid, 2,4,6-tri(4-aminophenyl)-1,3-5 triazine and 2,5-dimethoxy-terephthalaldehyde are taken as main raw materials; the benzaldehyde catalyst prepared from heteropolyacid type benzyl alcohol (NH4)0.5H2.5PW12O40-NiO/COF-1 is prepared by adopting layered loading of nickel nitrate and phosphotungstic acid, nanometer heteropolyacid is sufficiently and uniformly laoded on a COF-1 porous carrier, the loading capacity is improved, nanometer active sites are prepared by adopting a liquid phase reduction method, immediate reaction and immediate loading are realized,the activity of nanometer particles is maintained, and an aggregation effect is avoided; and the catalyst prepared in the invention integrally has relatively high activity, selectivity and carbon deposit resistance, the stability of the catalyst is improved, the service life of the catalyst can be prolonged, the comprehensive reaction performance of the reaction system is improved, and the catalyst has higher product yield.

The invention discloses a preparation method and application of water-soluble titanium dioxide nanoparticles. According to the preparation method, beta-cyclodextrin is used as an initial reaction material, a macroinitiator is synthesized by means of modification, a multi-arm star-shaped block copolymer is prepared by using an atom transfer radical polymerization (ATRP) technology and a technologywhich combines ATRP with 'click' chemistry, and the water-soluble titanium dioxide nanoparticles with uniform sizes and good dispersibility are prepared by taking the multi-arm star-shaped block copolymer as a monomolecular micelle template on the basis of a solution phase synthesis method. The titanium dioxide nanoparticles prepared by the preparation method are stable in quality, uniform in particle sizes, and can be stabilized at a nanoscale; the properties of the titanium dioxide nanoparticles can be effectively enabled to be exerted. The surfaces of the titanium dioxide nanoparticles aremodified, so that the titanium dioxide nanoparticles can be enabled to be evenly dispersed in water, and an aggregation effect is further avoided.

The invention belongs to the technical field of environmental protection and industrial emission reduction and provides an application of zero-valent iron-loaded biochar in wastewater treatment. According to the application, zero-valent iron-loaded biochar is added into wastewater containing metal ions, wherein the wastewater is electroplating wastewater or a mixture of the electroplating wastewater and organic wastewater, the reduction potential of the metal ions is higher than that of zero-valent iron, the metal ions are reduced into elementary substances by the nano zero-valent iron, the elementary substances and elementary substance iron on the biochar form a multi-metal composite material, and organic matters are efficiently catalyzed to be degraded; and meanwhile, the electroplatingwastewater and the organic polluted wastewater are mutually diluted, so that the aim of treating wastes with wastes is fulfilled; the zero-valent iron loaded biochar has magnetism, can be convenientlyrecycled by an electromagnet, and still has good treatment capacity after being repeatedly used. The application of the zero-valent iron-loaded biochar in wastewater treatment achieves a good effectin wastewater treatment; and the material has magnetism and is easy to recycle, so that the zero-valent iron-loaded biochar has a good application prospect.

The invention provides a bottom blowing reduction device. The bottom blowing reduction device comprises a furnace body, a feed port, a discharge port, a reduction gas inlet and a reduction gas outlet;the furnace body is transversely arranged, and forms a certain included angle with the horizontal direction; in the length direction of the furnace body, a gas cavity and a material cavity are formedin the furnace body; the gas cavity and the material cavity are separated by a porous plate; the feed port is formed in one higher end of the furnace body; and the reduction gas inlet and the reduction gas outlet both communicate with the gas cavity. The invention further provides a method for bottom blowing reduction by using the device; and materials to be reduced are fed in the material cavityfrom the feed port, slowly move downwards along the inclined furnace body under coaction of the gravity and the reduction gas, and are finally reduced and output from the discharge port. The method has no need to use a push rod or a conveying belt for driving a boat container to move, so that the boat container and a conveying device are omitted.

The invention discloses a remediation method of heavy metal contaminated bottom sludge. The remediation method includes the steps of firstly, moving out and dewatering the heavy metal contaminated bottom sludge; secondly, using a solid-phase conditioner to condition the contaminated bottom sludge; thirdly, using a liquid-state stabilizer to reduce heavy metal in the contaminated bottom sludge. The remediation method is low in cost, good in effect, high in efficiency, environmentally friendly, and the like.

The invention provides a gradient functional organic-inorganic hybrid membrane for advanced treatment of water, and a preparation method thereof. The preparation method comprises the following steps:S1, preparing a membrane casting solution, wherein the membrane casting solution is prepared from, by mass, 70-80% of N-methylpyrrolidone, 0.01-5% of interfacial polymerization-modified magnetic nanoparticles, 5-8% of polyethylene glycol (400), 2-6% of polyethylene glycol (20000) and 10-20% of polyvinylidene fluoride; and S2, preparing the membrane: uniformly coating a stainless steel plate with the membrane casting solution under the action of an external magnetic field, pre-evaporating the solution, and shaping the pre-evaporated solution a coagulation bath to form the PVDF organic-inorganichybrid membrane with the nanoparticles distributed on the cross section of the membrane in a gradient manner. The preparation method significantly increases the water throughout, the fracture strength and the toughness of the hybrid membrane.

The invention discloses a passivating agent for reducing activity of heavy metals in livestock and poultry excrement and application of the passivating agent. The passivating agent for reducing activity of the heavy metals in the livestock and poultry excrement is made by mixing of a solid-state conditioner and a liquid-state stabilizer; the solid-state conditioner is prepared from, by weight, 40-55 parts of coal ash, 20-35 parts of ardealite and 15-30 parts of red mud; the liquid-state stabilizer is rhamnolipid dispersed zero-valence nano iron suspension. The passivating agent for reducing activity of the heavy metals in the livestock and poultry excrement has advantages of low cost, effectiveness, high efficiency, environmental friendliness and the like.

The invention discloses a hydrophilic stony cultural relic nano protective agent and a preparation method thereof. The hydrophilic stony cultural relic nano protective agent is prepared from the following raw materials: nanosilicon dioxide, nano silver, propylene glycol, a fluorine surfactant, a water-based wetting agent, a water-based dispersing agent, a water-based defoaming agent, a preservative and water. The hydrophilic stony cultural relic nano protective agent can be bonded with a porous surface of a stony material, and a firm, durable, transparent, waterproof and oil-proof protective film is formed inside the surface of the stony material and is taken as a water-based permeable sealant for the porous surface of a cultural relic made from the stony material. The protective agent disclosed by the invention has excellent waterproof, antifouling and oil-proof properties, can effectively prevent the surface of the stony material from being polluted by foreign matters, and the surface can be cleaned easily; the protective agent has good air permeability, and steam is permeable; the protective agent has good weather resistance and uvioresistant function and can effectively preventthe surface of cultural relics such as the stony material and pottery from being weathered; and a coating is transparent, and appearance characteristics of the surface of the stony material are not changed.

The invention belongs to the technical field of lithium ion batteries, and discloses a silicon monoxide-based negative electrode material with high reversible capacity, preparation and application thereof. The silicon monoxide-based negative electrode material is mainly prepared from raw materials in a ball milling manner. When the raw materials are silicon monoxide, tin powder and cobalt powder, the silicon monoxide accounts for 30-70% of the total mass of the raw materials, the Sn powder accounts for 10-50% of the total mass of the raw materials, and the Co powder accounts for 5-25% of the total mass of the raw materials; when the raw materials are silicon monoxide, tin powder, cobalt powder and a carbon material, the silicon monoxide accounts for 40-70% of the total mass of the raw materials, the tin powder accounts for 10%-30% of the total mass of the raw materials, the cobalt powder accounts for 5%-15% of the total mass of the raw materials, and the carbon material accounts for 5-30% of the total mass of the raw materials. The invention also discloses a preparation method of the silicon monoxide-based negative electrode material. The negative electrode material disclosed by the invention has high reversible capacity, relatively good initial coulombic efficiency and excellent cycling stability. The negative electrode material is used for preparing a lithium ion battery.

The invention discloses a preparation method of a BiPO4 nano photocatalyst and belongs to the technical field of preparation of inorganic nano photocatalysis materials. The preparation method of the BiPO4 nano photocatalyst comprises steps as follows: bismuth salt and sodium phosphate are added to deionized water and stirred to obtain a first mixed solution; the pH value of the first mixed solution is adjusted to 1-6, and a second mixed solution is obtained; an AEC (alcohol ether carboxylate) water solution is added to the second mixed solution, and a precursor bismuth phosphate suspension isobtained; the precursor bismuth phosphate suspension is put in a hydrothermal reactor for a reaction, after the reaction is completed, and the BiPO4 nano photocatalyst is obtained. By means of the preparation method of the BiPO4 nano photocatalyst, obtained BiPO4 nanoparticles have good particle dispersity and interface characteristics, and the photochemical property of the BiPO4 nano photocatalyst is improved.

The invention relates to a refractory thermal insulation material and a preparing method thereof. The refractory thermal insulation material is prepared from, by weight, 10-16 parts of fruit shell powder, 10-15 parts of feldspar, 50-60 parts of shale, 10-13 parts of sandstone, 1-3 parts of limestone, 5-8 parts of magnesite, 5-7 parts of modified nano silica and a proper amount of water through high-temperature foaming after water is added for mixing. The surface of the refractory thermal insulation material is coated with a flame retardant. The prepared refractory thermal insulation material has good mechanical performance and refractory performance, is low in manufacturing cost and low in environmental pollution and belongs to environment-friendly materials.

The invention provides a process for slowing down settlement of a nano-suspension and a product and application of the nano-suspension. The process for slowing down settlement of the nano-suspension comprises the following steps: (1) adding a nano-adsorption granular material and a nano-material dispersant mixed solution to glycerol triacetate and stirring; (2) transferring to a high-speed stirrerand stirring; (3) transferring to an ultrasonic dispersion instrument to be ultrasonically dispersed. The traditional production process is optimized by using the process disclosed by the invention,so that the settlement rate of the prepared nano-suspension for a cigarette filter rod is greatly lowered, thereby being conducive to reducing the harmful degree of cigarettes.

The invention belongs to the technical field of building concrete admixtures, and particularly relates to a preparation method of a four-arm anti-permeability compacting agent. The prepared anti-permeability compacting agent is introduced in the concrete stirring process to improve the workability of concrete, improve the slump, increase the early strength of the concrete and increase the anti-permeability compactness of the concrete, the concrete strength can be increased at a low temperature, the freeze-thaw resistance of the concrete is also enhanced, in the concrete processing and using process, an anti-permeability compacting agent which takes a four-arm anti-permeability agent prepared from a silicon dioxide alkali liquor slow release and a silane coupling agent as a main raw material is adopted, capillary pores capable of filling the concrete are introduced, therefore, the hardening of the concrete is accelerated, and the anti-permeability compacting is achieved.

The invention discloses a preparation method of oil soluble titanium dioxide nanometer particles. According to the method, beta-cyclodextrin is taken as a primary reaction material and is synthesizedinto a macroinitiator through modification; multi-arm star block copolymer is formed through a technology of combination of ATRP and click chemistry; the oil soluble titanium dioxide nanometer particles with uniform sizes and excellent dispersity, based on a solution phase synthesis method and taking the multi-arm star block copolymer as a unimolecular micelle template, are formed. The surfaces ofthe TiO2 nanometer particles are modified, the TiO2 nanometer particles can be uniformly dispersed in an oily solvent, and the occurrence of aggregation effect can be avoided. The formed nanometer particles are stable in quality, the particle sizes are uniform and can be stabilized in nanoscale, and that performance of the TiO2 nanometer particles is realized can be effectively guaranteed.