38results about How to "Not easy to aggregate" patented technology

The invention relates to an inhibitor for preventing the formation of natural gas hydrate of high-sulfur acid gas fields, which comprises the following components in percentage by weight: 5 to 30 percent of biopolymer, which has the weight average molecular weight of between 3,000 and 10,000, of vinyl pyrrolidone and vinyl caprolactam or terpolymer, which has the weight average molecular weight of between 65,000 and 100,000,of the vinyl pyrrolidone, the vinyl caprolactam and N, N-(dimethylamino)ethyl methacrylate, 5 to 30 percent of amido group-containing and lipid group-containing polyesteramide or amidation product which is formed by polymerizing maleic anhydride, a derivative thereof and alkyl alcohol amine and has the number average molecular weight of between 1,000 and 15,000, 10 to 15 percent of surfactant and defoaming agent, and 50 to 70 percent of mixture of methanol or ethanol and glycol. The inhibitor has better inhibition effect on acid natural gas hydrate which has the H2S content between 0 and 8 percent, the CO2 content between 0 and 5 percent, and no hydrocarbon components above C2.

The invention discloses a lipoid-cation polymer with a structural formula shown in the specification, wherein in the structural formula, m and n are both positive integers, m is any integer from 60 to 120 and n is any integer from 80 to 250. The lipoid-cation polymer can be used as a carrier for carrying nucleic acid, and in a gene therapy, the lipoid-cation polymer is combined with the nucleic acid to prepare a gene-borne nano composite to be introduced into a cell. The gene-borne nano composite synthesized in the invention is prepared by utilizing residual amino groups on a lipoid-cation polymer skeleton and DNA or RNA to spontaneously form a polyion polymer micelle, the DNA or RNA and the polycations form an inner core cladded with a lipid material, and a hydrophilic polymer PEG (Polyethylene Glycol) is enveloped on the outer layer. The core-shell structure enables the gene-borne nano composite to have high colloid stability and can reduce the interaction between the nano composite and a blood plasma component.

The invention discloses high-strength high-softness high-antibacterial-performance paper for daily use and a preparation method thereof. According to the method, chitosan powder is dissolved in a lactic acid water solution, chitosan is completely dissolved, a bronopol solution is added into the mixture to be evenly mixed, then a negative ion polyacrylamide solution is dripped, a lactic acid/chitosan-bronopol nano microsphere compound is prepared through reaction, the obtained compound is sprayed to the surface of paper for daily use, and then the high-strength high-softness high-antibacterial-performance paper for daily use is obtained. By the utilization of the lactic acid/chitosan-bronopol nano microsphere compound, the paper for daily use has high strength, high antibacterial performance and high softness, the three defects that according to common paper for daily use, strength and softness are low, and no antibacterial performance exists are overcome, and high application value is obtained.

The invention discloses a double-ingredient addition type heat conduction silicone rubber containing graphene, and a preparation method thereof, and belongs to the field of sealant. The heat conduction silicone rubber is prepared from a component A and a component B, wherein the component A is prepared from alpha,omega-divinyl polydimethylsiloxane, hydrogen-containing polysiloxane, modified graphene, hydrophobic fumed silica and inhibitor; the component B is prepared from alpha,omega-divinyl polydimethylsiloxane, chloroplatinic acid-divinyl tetramethyldisiloxane complex, modified graphene andhydrophobic fumed silica; the component A and the component B are evenly mixed. The double-ingredient addition type heat conduction silicone rubber adopts silicon dioxide and long-chain silane dual modified graphene as a functional filler, so that silica gel has good thermal conductivity and also has the advantages of good mechanical performance and thermal resistance and small specific gravity which is obviously lower than that of common thermal conduction silica gel full of aluminium oxide in the market, and can be widely applied in the fields including new energy and the like.

The invention provides a solvent type digital ink-jet printing dye sublimation ink and a preparation method thereof. The ink comprises the following components in percentage by mass: 1 to 10 percent of disperse dye, 0.5 to 7 percent of resin and 20 to 95 percent of organic solvent. The preparation method comprises the following steps of: uniformly mixing 0.5 to 7 percent of resin and 20 to 95 percent of organic solvent at a normal temperature; adding 1 to 10 percent of disperse dye into the mixture; dissolving the disperse dye with a high-shear emulsifying machine at a rate of between 400 and1,000 rpm for 0.5 to 5h; and filtering the mixture with a filter of which the aperture is 0.2 to 2 mu m to obtain the solvent type digital ink-jet printing thermal-sublimation ink. The ink is not influenced by the temperature change of a printing environment, and has the advantages of good injection stability and storage stability, simple preparation process and low energy consumption.

The invention belongs to the technical field of waterborne epoxy resin, and particularly relates to a reactive emulsifier, waterborne epoxy resin emulsion, preparation and application. Phenolic aldehyde amine generated by condensation reaction of cardanol, paraformaldehyde and micromolecular polyamine reacts with polyethylene glycol diglycidyl ether to obtain the reaction type emulsifier being ofan "amine-polyoxyethylene ether-amine" structure, which is terminated by the aldehyde group of the cardanol and has hydrophilic middle chain sections; then mixing the reactive emulsifier with water toform a nano-scale emulsion, and mixing the nano-scale emulsion with epoxy resin at a high speed to obtain the water-borne epoxy resin emulsion. The method is simple in technological process, safe tooperate, mild in reaction and low in production cost. The preparation method is simple and the prepared reactive emulsifier is good in emulsifying effect, so that the water-borne epoxy resin emulsionwith good stability is obtained under the condition that few hydrophilic components are introduced. The water-borne epoxy resin emulsion has excellent mechanical property, adhesion property, water resistance and corrosion resistance when used as a water-borne coating.

The invention discloses an antibacterial aloe fiber fabric and a preparation method thereof, and relates to the technical field of textile fabrics. A polyhydroxy compound is used for modifying nano silver, the surface of the nano silver is surrounded by hydroxy, and thus, the nano silver is unlikely to gather; meanwhile, the solubility and dispersity of the nano silver in fibers can be improved, and thus, the fibers have good antibacterial effect; a prepared active aid has adhesive property and more active groups, the nano silver and unsaturated groups on the fibers can be connected through hydrogen bonds, and the antibacterial durability of the fibers is improved; and the fabric uses aloe fibers and taxus brevifolia fibers, not only has good moisture absorption breathability, but also hasa disease-resisting effect; and by addition of nano calcium carbonate and titanium dioxide, the strength of the fibers can be enhanced.

The invention relates to a preparation method of a low-temperature anti-freezing emulsion type polymer thickening agent for fracturing. The preparation method comprises the following steps: uniformly stirring acrylamide, acrylic acid, an anti-salt monomer, deionized water, a chain transfer agent, a chelating agent, a water-soluble oxidizing agent and ammonia water in a mixing container in parts by mass, and adjusting the pH value; the oil phase is a transparent oil phase formed by fully mixing a compound solvent mineral oil and a compound nonionic emulsifier in a reaction kettle; adding the water phase into the oil phase, emulsifying and homogenizing, fully replacing with inert gas to remove oxygen, adding a reducing agent for polymerization reaction, and performing phase inversion with a phase inversion agent to obtain the polymer emulsion. The thickening agent disclosed by the invention is good in stability at a low temperature, an emulsion polymer can be kept in a homogeneous liquid state with relatively good flowability after being placed at-25 DEG C for 30 days, and the problems that an emulsion type thickening agent for fracturing is easy to layer, agglomerate, precipitate and solidify when being stored in the open air at a low temperature are solved; the construction problems of on-site storage, pumping, dissolution and the like in northwest and northeast oil and gas fields in severe cold weather in winter are solved.

The invention provides a novel ertapenem sodium crystal form and a preparation method thereof. The novel ertapenem sodium crystal form has 27 main characteristic peaks in a powder X-ray diffraction pattern. The crystal form of the ertapenem sodium is a rod-like crystal form, the particle size is large, aggregation is not prone to occurring, drying treatment is easier, and a product with high crystallinity and purity can be obtained through simple drying treatment. Meanwhile, the novel crystal form disclosed by the invention is better in stability, and the crystal form can be kept unchanged to the greatest extent in subsequent washing and drying processes, so the purity of the product is further improved. Moreover, based on the larger particle size and better stability of the novel ertapenem sodium crystal form, the novel ertapenem sodium crystal form is easier to produce on a large scale in a factory, so a high-purity and high-yield ertapenem sodium product can be obtained.

The invention discloses an amorphous MOF nano photosensitizer as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, by taking BODIPY as a mother nucleus, preparing a near-infrared photosensitizer through polyiodization and polycarboxylation derivation; the MOF nano photosensitizer with photodynamic activity is constructed by taking the near-infrared photosensitizer as a ligand and coordinating with metal ions. The prepared MOF nano photosensitizer is in an amorphous state, has good water solubility and shows efficient photodynamic activity under the illumination condition, and the photodynamic effect of the MOF nano photosensitizer is verified on the cell and animal level. Besides, the maximum absorption wavelength and emission wavelength of the amorphous MOF nano photosensitizer prepared by the invention are both located in a near-infrared region, so that deep tumor treatment by adopting near-infrared light is facilitated, and the amorphous MOF nano photosensitizer has a good application prospect.

The invention relates to a graphdiyne-heme nano-composite as well as a preparation method and application thereof. The graphdiyne-heme nano-composite comprises graphdiyne nanosheets and heme loaded through hydrophobic interaction and pi-pi conjugation. According to the graphdiyne-heme nano-composite disclosed by the invention, the graphdiyne nanosheets with good water solubility are creatively used for loading heme molecules through hydrophobic interaction and pi-pi conjugation, so that the water solubility and dispersity of the heme are improved. The graphdiyne-heme nano-composite retains the efficient catalytic performance of heme, has high peroxidase activity, can catalyze hydrogen peroxide to generate a large number of hydroxyl radicals under a weak acid condition, has an efficient killing effect on gram-positive bacteria and gram-negative bacteria, can treat bacterial infection of wounds, and can accelerate the wound healing. Meanwhile, the graphdiyne-heme nano-composite also has good biocompatibility and is easy to apply in biomedicine.

The invention relates to a fuel cell catalyst taking metal glass as a carrier and a preparation method of the fuel cell catalyst, and belongs to the technical field of fuel cell catalysts. The invention provides the fuel cell catalyst taking the metal glass as the carrier. The catalyst comprises the metal glass carrier and metal particles, wherein the metal particles are loaded on the metal glasscarrier, the metal glass carrier is zirconium-based alloy metal glass, the metal particles are at least one of platinum, iron, cobalt, nickel, rhodium, palladium, iridium, gold and titanium, and the grain sizes of the metal particles are 5-800 nanometers. Compared with an existing catalyst carrier comprising carbon or carbon material, the fuel cell catalyst has the advantages that the metal glassis used as the carrier, no carbon is completely contained in the catalyst, corrosion and gathering of the carrier are difficult to occur, so that the activity and the durability of the catalyst are improved.

The invention relates to the technical field of chemical engineering, and discloses spherical particles containing TiO2 purification factors. The spherical particles comprise the following raw materials in parts by weight: 100-200 parts of titanium sulfate, 50-100 parts of a reaction solvent, 10-20 parts of a surfactant, 20-30 parts of sulfuric acid and 40-60 parts of urea. The spherical particlescontaining the TiO2 purification factors are uniform in particle size distribution, are free of agglomeration or large particles, and have good dispersibility. When the TiO2-containing purification factors are illuminated in an application process, hydroxyl free radicals and superoxide ion free radicals generated on the surface have very strong oxidizing capacity. Reaction energy of the hydroxylfree radicals is 402.8 MJ/mol, and bonds such as C-C, C-H, C-N, C-O, N-H and the like in organic matter can be sufficiently destroyed, so that organic pollutants are completely oxidized into carbon dioxide and water under the action of hydroxyl free radicals and superoxide ion free radicals, main indoor pollutants such as hydrocarbons, benzene, formaldehyde, sulfides, ammonia and the like can be effectively removed, and the formaldehyde removal effect is excellent.

The invention provides a plastic brightening agent OB. The plastic brightening agent OB is characterized by being prepared from a plastic brightening agent OB crude product, N-methylpyrrolidone and methanol, wherein the plastic brightening agent OB crude product is prepared from the following components in parts by weight: 24-26 parts of thiophene dicarboxylic acid, 45-47 parts of o-amino-p-tert-butylphenol, 123-125 parts of a condensation solvent, 2-3 parts of boric acid, 0.5-0.7 part of a catalyst and 105-110 parts of dimethylformamide; the ratio of the N-methylpyrrolidone to the plastic brightening agent OB crude product in parts by weight is 1-2:1; and the ratio of the methanol to the plastic brightening agent OB crude product in parts by weight is 3-5: 1. According to the plastic brightening agent OB and the preparation method thereof, the production process is rapid and uniform in reaction, free of aggregation, few in impurity, few in by-product and high in purity.

The invention relates to a target material manufacturing method which comprises the steps of providing a forge piece target material, wherein the forge piece target material comprises a sputtering surface; and adopting a calendaring process for calendaring the forge piece target material, enabling the calendaring thickness deformation rate of the forge piece target material in the direction perpendicular to the sputtering surface to be 40 percent to 60 percent, and forming a finished product target material, wherein the calendaring thickness deformation rate is a ratio between the thickness variation amount before and after calendaring and the thickness before calendaring. If the calendaring thickness deformation rate is small, the stress accumulation, along the direction perpendicular tothe sputtering surface, in the forge piece target material is small, so that (111) texture aggregation cannot be easily produced in the forge piece target material, the number of the (111) textures can be reduced, the sputtering rate of the formed finished product target material is improved, and the sputtering performance of the finished product target material is improved.

A preparation method of carbon quantum dots for penetrant testing of stone cultural relics comprises the following steps: mixing ginkgo leaves serving as a raw material with deionized water, performing high-pressure cooking at 110-125 DEG C and 180-200KPa for 2-3 hours, filtering out filtrate, and removing impurities. The carbon quantum dots prepared by using the ginkgo leaves as the raw material have high fluorescence quantum yield (up to 6.2%), and have excellent fluorescence intensity; the particle size distribution is narrow and uniform and is about 3.1 nm, and the carbon quantum dots are excellent in stability and not prone to sedimentation and aggregation; and very strong fluorescence intensity can still be detected under the ultra-low concentration of 2 ng/L, and the method is suitable for penetrant testing of cultural relics with relatively large volumes and long internal crack paths.