23 results about "Dodecyltrimethylammonium bromide" patented technology

The invention relates to the field of shoe materials, and particularly discloses an EVA and PEBAX blended foaming material for shoes and a preparation method of the EVA and PEBAX blended foaming material. The EVA and PEBAX blended foaming material for the shoes is prepared from the following raw materials in parts by weight: 70 to 90 parts of EVA resin, 10 to 30 parts of PEBAX, 0.8 to 1.2 parts of dodecyltrimethylammonium bromide modified rectorite, 2 to 5 parts of a foaming agent, 0.5 to 2 parts of a foaming aid, 3 to 5 parts of filler, 2 to 4 parts of a reinforcing agent, 0.5 to 2 parts of a cross-linking agent, 0.6 to 3 parts of a lubricating agent and 1 to 4 parts of a compatilizer. The material for the shoes has the advantages of being high in tear strength, uniform in foaming, light in weight and small in permanent compression deformation.

The application belongs to the technical field of contaminated soil remediation, and particularly relates to modified montmorillonite for synergistically remediating heavy metals and organic pollutants in soil as well as a preparation method and application thereof. Hexadecyl trimethyl ammonium bromide (CTAB) and dodecyl trimethyl ammonium bromide (DTAB) are used as modifiers to prepare organic modified montmorillonite, and mercury ions (Hg 2+ ) and acetochlor (ACR) are used as representative substances of heavy metals and organic pollutants to study the effects of the two kinds of organic modified montmorillonite on remediation of Hg 2+ and ACR compound contaminated soil. The results show that the two kinds of organic modified montmorillonite have good removal effects on Hg 2+ and ACR in real soil samples, and can simultaneously remove Hg 2+ and ACR in soil. The removal rates of CTAB modified montmorillonite and DTAB modified montmorillonite can both reach more than 90%. The organic modified montmorillonite prepared by using CTAB and DTAB as modifiers can simultaneously remove Hg 2+ and ACR in soil, and can synergistically remediate Hg 2+ and ACR compound contaminated soil.

The invention discloses a preparation method of a superfine PtIr nanowire catalyst for ammoxidation. The preparation method comprises the following steps: firstly, fully dissolving platinum acetylacetonate, iridium acetylacetonate, tungsten hexacarbonyl and dodecyl trimethyl ammonium bromide in oleylamine to obtain a light yellow solution; carrying out ultrasonic treatment on the obtained light yellow solution until the solution is fully dissolved; and heating the obtained uniform light yellow solution to 190 DEG C in an oil bath, keeping the temperature for 5 hours, centrifuging, washing and drying to obtain the superfine PtIr nanowire catalyst. The nanowire structure has a high specific surface area and abundant active sites, and is beneficial to effective quality and electron transmission. Through alloying of Ir and Pt, the electronic structure on the surface of the catalyst is changed, and the poisoning probability is effectively reduced. Meanwhile, the adsorption and activation process of ammonia molecules is optimized through the synergistic effect between Pt and Ir, the reaction activation energy is reduced, and the reaction rate is remarkably increased. The catalyst not only has remarkable ammonia oxidation catalytic performance, but also is good in stability and simple in preparation process.

The application discloses a kind of heat-sensitive water-based direct liquid ink and its preparation method, including the following weight percentage of raw materials are made: 78.17% deionized water, 16% humectant, 0.02% filler, 5% microcapsule color paste, 0.1% preservative, 0.5% main dispersant, 0.1% auxiliary dispersant, 0.1% ph regulator, 0.01% thickener.The humectant is glycerol and ethylene glycol, wherein the mass ratio of glycerol and ethylene glycol is 3:1.The filler is acrylic resin;The main dispersant is alkyl ammonium salt;Alkyl ammonium salt is dodecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium bromide or octadecyl trimethyl ammonium bromide.The auxiliary dispersant is anionic surfactant;Anionic surfactant is sodium dodecyl sulfate.By modifying HEC, and at the same time as a suspending agent, help pigments or other solid ingredients evenly suspended in ink, to prevent precipitation and agglomeration.Through its dispersion, it can be ensured that the ink still remains uniform and stable after long-term storage.

The present application relates to the technical field of oilfield chemicals, and discloses an acid liquid reverse emulsion thickening agent for super-high-temperature gelling acid and a preparation method thereof.The thickening agent is prepared by reverse emulsion polymerization of methacryloyloxyethyl trimethyl ammonium chloride monomers.The reverse emulsion comprises an aqueous phase and an oil phase.The raw materials of the aqueous phase include methacryloyloxyethyl trimethyl ammonium chloride monomers, an initiator, an auxiliary agent, secondary water and an aqueous phase emulsifier.The aqueous phase emulsifier is a combination of dodecyl trimethyl ammonium bromide and lauryl alcohol polyether.The raw materials of the oil phase include an oily medium and an oil phase emulsifier.The present application can solve the problems of the prior art, such as the difficulty in synthesizing pure homopolymer reverse emulsion of methacryloyloxyethyl trimethyl ammonium chloride (DMC), the insufficient thickening effect of the thickening agent in a super-high-temperature environment, and poor temperature resistance.

The invention discloses a composite cation corrosion inhibitor based on critical micelle concentration regulation and control as well as a preparation method and application of the composite cation corrosion inhibitor. The corrosion inhibitor is composed of cetyl pyridinium chloride, dodecyl trimethyl ammonium bromide, a nonionic surfactant and sodium molybdate. By optimizing the compounding ratio and adding the nonionic surfactant, the critical micelle concentration of the mixed system is reduced, the formation of micelles is remarkably inhibited, and the monomer adsorption efficiency is improved. The preparation process comprises gradient dissolution, passivation synergistic treatment and finished product forming, and uniform dispersion and synergistic effect of the components are ensured. Compared with a single cationic surfactant, the corrosion inhibitor has the advantages that an adsorption film is compact and stable, the corrosion inhibitor has passivation induction and physical barrier functions, particularly in a high-temperature (60-80 DEG C) acidic (pH 3-5) environment, the corrosion inhibition efficiency of the low-concentration composite corrosion inhibitor is superior to that of a high-concentration single surfactant, and meanwhile, the inhibition effect on microbial activity is remarkable; the method is suitable for high-corrosion risk scenes such as oil and gas pipelines and ocean platforms.

The invention relates to the technical field of mineral separation, in particular to a method for synchronously removing silicon and magnesium impurities by reverse flotation of collophanite, which comprises the following steps of: grinding raw ore, and synchronously removing the silicon and magnesium impurities in the collophanite by adopting a closed-loop process comprising primary roughing, primary scavenging, secondary concentration, middling regrinding-concentration and primary fine scavenging; wherein a compound of amino trimethylene phosphonic acid and sodium ardronate is used as an inhibitor of collophanite; a compound of 11-aminoundecanoic acid, dodecyl trimethyl ammonium bromide and sodium oleate is adopted as a synchronous reverse flotation collecting agent of the magnesium-silicon gangue minerals; flotation is carried out in a weakly alkaline ore pulp system, and the pH value of ore pulp is 8-10. According to the method, silicon-calcium gangue minerals are subjected to synchronous reverse flotation by selectively inhibiting apatite-multi-component collecting agent under weak base.

The invention relates to the technical field of methane-hydrogen sulfide reforming, in particular to a preparation method and application of a molybdenum-based catalytic material for methane-hydrogen sulfide reforming. The preparation method comprises the following steps: S1, calcining nano gamma aluminum oxide; s2, treating the calcined nano gamma aluminum oxide with a sodium citrate solution; s3, the polystyrene microspheres are treated through dodecyl trimethyl ammonium bromide; s4, combining the nano gamma aluminum oxide treated in the step S2 with the polystyrene microspheres treated in the step S3; s5, adding ammonium molybdate tetrahydrate, metal salt and the nano gamma aluminum oxide assembled in the step S3 into deionized water to obtain a precursor; s6, calcining and grinding the precursor obtained in the step S5 to obtain a primary catalytic material; and S7, vulcanizing the primary catalytic material obtained in the step S6 to obtain the catalytic material. The catalytic material prepared in the invention has high activity and high methane conversion efficiency.

This invention provides a method for preparing composite whiskers of calcium sulfate and basic magnesium salt, belonging to the field of whisker preparation. The method includes: treating gypsum dihydrate, magnesium sulfate, and magnesium hydroxide into micron-sized powders; weighing gypsum powder, magnesium sulfate powder, magnesium hydroxide powder, water, a crystal form control agent, and an ion regulator; adding these to a high-temperature, high-pressure reactor for hydrothermal reaction to obtain crude composite whiskers; centrifuging, dehydration, washing, and drying to obtain composite whiskers of calcium sulfate and basic magnesium salt; the crystal form control agent is at least one of aluminum salt, dodecyltrimethylammonium bromide, and sodium dodecyl sulfonate; the ion regulator includes calcium ion regulating aids and magnesium ion regulating aids. This invention, through specific conditions and aids, enables calcium sulfate and basic magnesium salt to grow into composite whiskers under the same conditions. Their two different crystal states form a special "bridging" structure, thus exhibiting superior mechanical properties when used in polymer materials.

The invention provides a preparation method of composite whiskers of calcium sulfate and basic magnesium salt, and belongs to the field of whisker preparation. The method comprises the following steps: respectively treating dihydrate gypsum, thiomagnesium acid and magnesium hydroxide into micron-sized powder, weighing gypsum powder, magnesium sulfate powder, magnesium hydroxide powder, water, a crystal form control agent and an ion regulator, and adding into a high-temperature and high-pressure reaction kettle for hydrothermal reaction to obtain a composite whisker crude product; centrifugally dewatering, washing and drying to obtain composite crystal whiskers of calcium sulfate and basic magnesium salt; the crystal form control agent adopts at least one of aluminum salt, dodecyl trimethyl ammonium bromide and sodium dodecyl sulfate; the ion regulator comprises a calcium ion regulating aid and a magnesium ion regulating aid. The calcium sulfate and the basic magnesium salt grow to form the composite whisker under the same condition through specific conditions and auxiliaries, the two different crystal form states of the composite whisker form a special folding stool bridging structure, and therefore the composite whisker shows more excellent mechanical performance when being applied to high polymer materials.

The invention relates to the technical field of oil field chemicals, and provides an acid liquid inverse emulsion thickening agent for ultrahigh-temperature gelled acid and a preparation method thereof.The thickening agent is prepared from methacryloyloxyethyl trimethyl ammonium chloride monomers through inverse emulsion polymerization, and an inverse emulsion comprises a water phase and an oil phase, the water-phase raw materials comprise a methacryloyloxyethyl trimethyl ammonium chloride monomer, an initiator, an auxiliary reagent, secondary water and a water-phase emulsifier, the water-phase emulsifier is a combination of dodecyl trimethyl ammonium bromide and lauryl alcohol polyether, and the oil-phase raw materials comprise an oily medium and an oil-phase emulsifier. The problems that in the prior art, a methacryloyloxyethyl trimethyl ammonium chloride (DMC) pure homopolymerized inverse emulsion is difficult to synthesize, and a thickening agent is insufficient in tackifying effect and poor in temperature resistance in an ultra-high-temperature environment can be solved.

The invention relates to the technical field of drilling fluid base fluid preparation, in particular to an environment-friendly non-water-based drilling fluid base fluid which comprises the following raw materials in parts by weight: 70-80 parts of base oil, 4-5 parts of perfluoropolyether phosphate, 9-10 parts of a functional aid, 1-1.4 parts of dodecyl trimethyl ammonium bromide, 0.9-1.1 parts of brominated methyl ricinoleate, 2-3 parts of polyoxyethylene oleylamine and 0.7-0.9 part of triethanolamine oleate. The perfluoropolyether phosphate and the polyoxyethylene oleylamine are added and compounded to form complementation, so that the high-temperature emulsification stability is enhanced; the modified T501 is added, the phenolic hydroxyl group of the modified T501 provides active hydrogen atoms, the white oil oxidation chain reaction is interrupted, the oxidation induction period is prolonged, the service life of the base solution is prolonged, the bone meal-wax composite sol is added to be compounded with the oil-soluble lignite resin, and the resin is cross-linked at high temperature, so that the strength of the plugging film is enhanced, the invasion of filtrate into the stratum is reduced, and the pollution of the base solution is reduced.

The invention discloses a cardiac troponin T calibrator diluent composition, a diluent, a calibrator as well as a preparation method and application of the calibrator. The composition comprises a basic diluent component, a potassium salt, a casein hydrolysate and dodecyl trimethyl ammonium bromide, and the mass ratio of the potassium salt to the casein hydrolysate to the dodecyl trimethyl ammonium bromide is (5-39): (1-20): (0.5-3). According to the provided cardiac troponin T calibrator diluent composition and diluent, by optimizing the variety and concentration in the formula, the stability of cardiac troponin T in a liquid state and a freeze-drying state is remarkably improved, adsorption and degradation of cardiac troponin T in a glass container are effectively inhibited, the cardiac troponin T can be stabilized in a room-temperature glass bottle, and the application range of the cardiac troponin T calibrator diluent composition is widened. And after redissolution, good concentration consistency is still maintained, and reliable stability guarantee is provided for preparation, freeze-drying and clinical detection of the cardiac troponin T calibrator.

The invention discloses a modified electrode for detecting perfluorooctane sulfonic acid in an electrogalvanizing solution and a preparation method thereof.The modified electrode comprises a working electrode, and the surface of the working electrode is modified with dodecyl trimethyl ammonium bromide-zirconium-based metal organic framework / praseodymium-based dynamic metal organic gel; the praseodymium-based dynamic metal organic gel forms a stable film layer on the surface of the electrode, the zirconium-based metal organic framework is combined with the praseodymium-based dynamic metal organic gel and is bridged with dodecyl trimethyl ammonium bromide, and the dodecyl trimethyl ammonium bromide is specifically combined with perfluorooctane sulfonic acid. According to the application, the dodecyltrimethylammonium bromide and the perfluorooctane sulfonic acid are specifically combined, the praseodymium-based dynamic metal organic gel is combined to enhance an initial electrochemical luminescence signal of a system, and the zirconium-based metal organic framework is used for improving the stability of an interface, so that the interference of coexisting ions in an electrogalvanizing solution is avoided; the accuracy and the reliability of perfluorooctane sulfonic acid detection are improved.

The present application relates to the technical fields of drilling fluid base fluid preparation, in particular to an environment-friendly non-water-based drilling fluid base fluid, comprising the following raw materials by weight: 70-80 parts of base oil, 4-5 parts of perfluoropolyether phosphate, 9-10 parts of functional additives, 1-1.4 parts of dodecyl trimethyl ammonium bromide, 0.9-1.1 parts of brominated methyl castor oil acid ester, 2-3 parts of polyoxyethylene oleyl amine, 0.7-0.9 parts of triethanolamine oleate; the present application is complementary by adding perfluoropolyether phosphate and polyoxyethylene oleyl amine to form a compound, thereby enhancing the high-temperature emulsion stability; by adding modified T501, the phenolic hydroxyl group of modified T501 provides active hydrogen atoms, interrupts white oil oxidation chain reaction, prolongs the oxidation induction period, improves the service life of the base fluid, by adding bone powder-wax composite sol and oil-soluble lignite resin to form a compound, the resin crosslinking enhances the strength of the plugging film at high temperature, reduces the invasion of filtrate into the formation, and reduces the pollution of the base fluid.

The application discloses a dodecyltrimethylammonium bromide doped manganese dioxide composite material and a preparation method and application thereof in a zinc ion battery. Dodecyltrimethylammonium bromide and manganese dioxide are added into isopropyl alcohol, stirred, the obtained mixed solution is moved into a reaction kettle, and a hydrothermal reaction is carried out, after the reaction is completed, the obtained product is vacuum dried, and the dodecyltrimethylammonium bromide doped manganese dioxide composite material is obtained. The dodecyltrimethylammonium bromide doped manganese dioxide composite material is applied to the zinc ion battery as a positive electrode material, and it can be concluded from electrochemical test that the dodecyltrimethylammonium bromide doped manganese dioxide positive electrode material has a higher specific capacity compared with original manganese dioxide. The synthesis process is simple, environment-friendly and low in price, and the dodecyltrimethylammonium bromide doped manganese dioxide composite material is expected to become a new type of energy storage device.

The application relates to the field of flame-retardant silicone rubber, and particularly discloses high-flame-retardant ceramifiable silicone rubber and a preparation method thereof. The high-flame-retardant ceramifiable silicone rubber comprises the following raw materials in parts by weight: 100 parts of silicone rubber, 10-20 parts of hydroxyl silicone oil, 5-10 parts of a vulcanizing agent, 20-40 parts of low-melting-point glass powder, 3-5 parts of a plasticizer, 2-7 parts of a coupling agent, 10-20 parts of a ceramifiable aid, 15-25 parts of white carbon black, 10-30 parts of modified expandable graphite, and 10-20 parts of hydrophobic modified silica aerogel; the silicone rubber comprises methyl vinyl silicone rubber and liquid silicone rubber at a mass ratio of 1:0.5; and the modified expandable graphite comprises expandable graphite, halloysite, dodecyltrimethylammonium bromide and cetyltrimethylammonium bromide at a mass ratio of 10:1-2:0.1-0.2:0.1-0.2. The ceramifiable silicone rubber disclosed by the application has good high-temperature resistance, strong flame-retardant capacity and high ceramic strength.

This invention discloses an amphiphilic phenolic network nanosphere, its preparation method, and its applications. The nanospheres possess an intrinsically amphiphilic topology of a hydrophobic aromatic network core and a hydrophilic hydroxyl-rich shell, and are monodisperse spherical particles with dodecyltrimethylammonium bromide anchored on their surface. This invention also provides a one-step aqueous synthesis method, achieving precise size control through the introduction of phase separation and interface modifiers. The synergistic dispersion system formed by the nanospheres and sodium fatty alcohol polyoxyethylene ether sulfate is stably dispersed in a high-salt environment (>10,000 mg / L), with an oil-water interfacial tension as low as 1.03 mN / m, capable of reversing oil-wetted core surfaces to water-wetted surfaces (contact angle ≤70°). The nanospheres of this invention can spontaneously adsorb at the oil-water interface and self-assemble under the Marangoni effect to form a high-strength particle-reinforced interfacial film. This invention provides new materials and methods for efficient oil recovery in complex reservoirs.

The application discloses a kind of denitration catalyst sulfur-resistant regeneration reagent and denitration catalyst regeneration method, and denitration catalyst sulfur-resistant regeneration reagent includes: pre-washing reagent and active load reagent;Wherein, pre-washing reagent includes: citric acid 1-5%, triethanolamine 0.2-2%, sulfuric acid 0.05-5%, alkyl glycoside 0.1-2%, dodecyl trimethyl ammonium bromide 0.3-4%, the rest is water, by mass;Active load reagent includes: cerium nitrate 0.1-2%, ammonium molybdate 0.2-2%, vanadium salt 3-5%, tungsten salt 1-5%, sulfuric acid 0.1-2%, citric acid 0.1-1%, JFC penetrant 0.1-0.3%, the rest is water, by mass.The denitration catalyst sulfur-resistant regeneration reagent of the application can better restore the specific surface area of catalyst, better remove the ash in pore surface and micropore, and the poisoning phenomenon of sulfur substances and the enrichment phenomenon of alkali metals basically disappear.

A catalyst for the carbonylation of methanol to acetic acid, its preparation method, and its application are disclosed. The method comprises: 1) mixing a silicon source, an aluminum source, and an alkaline source to form a sol; 2) mixing a quaternary ammonium salt and an organic base, adding the mixture to the sol prepared in step 1), followed by aging, crystallization, filtration, washing, drying, and calcination; 3) dispersing the molecular sieve prepared in step 2) in an NH4Cl aqueous solution for ammonium exchange, followed by drying and calcination; 4) subjecting the molecular sieve prepared in step 3) to pyridine adsorption to obtain the catalyst. The quaternary ammonium salt in step 2) is one or more of octaalkyltrimethylammonium bromide, decaalkyltrimethylammonium bromide, dodecyltrimethylammonium bromide, tetradecyltrimethylammonium bromide, hexadecyltrimethylammonium bromide, and octadecyltrimethylammonium bromide. The nano-sized mordenite zeolite prepared by this invention can improve the diffusion of methanol and carbon monoxide, thereby enhancing the activity and selectivity of methanol carbonylation to acetic acid.

The application discloses a preparation method and application of a gamma-polyglutamic acid-quaternary ammonium salt-mussel protein coating, which is a polyamino acid complex formed through electrostatic self-assembly interaction of a negative-charged gamma-polyglutamic acid, a positive-charged cationic quaternary ammonium salt and a mussel protein; the gamma-polyglutamic acid is directly separated and purified through a microbial fermentation method; and the cationic quaternary ammonium salt is any one of benzalkonium chloride, dodecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide. The coating can be used as an antibacterial coating on the surface of a medical instrument, and can effectively reduce the risk of acquired infection caused by various medical instruments; and the modification method is suitable for preventing bacterial infection caused by various medical instruments.

The invention discloses a nano-modified fracturing fluid thickening agent as well as a preparation method and application thereof, and belongs to the technical field of oil and gas field fracturing fluid additives. According to the thickening agent, a hydrophobic monomer is grafted on the basis of conventional polyacrylamide, hydrophobic associated polyacrylamide is synthesized from acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, N-12-(2-buteneyloxy) n-dodecyl-N, N, N-trimethyl ammonium bromide and 4-(3-butene-1-yl) benzoic acid, and the hydrophobic associated polyacrylamide is added into the thickening agent. And the modified nano silicon dioxide is introduced to further enhance the mechanical property of the hydrophobic associated polyacrylamide. The nano-modified fracturing fluid thickening agent prepared by the preparation method disclosed by the invention is high in solubility and good in temperature resistance, shear resistance, viscoelasticity and thixotropy, and the nano-modified fracturing fluid thickening agent disclosed by the invention is used for being added into a fracturing fluid in proportion and is suitable for being used as an additive to improve the performance of the fracturing fluid.

This invention discloses a surfactant-based composite leaching agent for weathered crust leached rare earth ores. It is a composite solution formed primarily from a composite cationic surfactant and an inorganic leaching agent solution. The composite cationic surfactant is composed of hexadecyltrimethylammonium bromide and dodecyltrimethylammonium bromide. This surfactant-based composite leaching agent effectively increases the penetration rate of the leaching agent solution into the ore body, increases the leaching rate of rare earth elements, inhibits the leaching of aluminum impurities, and suppresses the expansion of the ore body, thus maximizing the leaching process of rare earth elements. Furthermore, the application method is simple, efficient, and suitable for widespread application.